Oily Water Separator (15 ppm)

• Separation-stage, bowl, coalescer or filter fouling reduces treatment efficiency and causes poor outlet quality or alarms
• Monitor, sensor or sampling-line contamination causes unstable readings or unnecessary recirculation and trips
• Seal, gasket or bowl-sealing faults cause leakage or loss of correct separation conditions
• Feed-pump, drive or bearing faults cause unstable flow, vibration, abnormal noise or shutdown
• Incorrect temperature, flow, interface or chemical condition causes poor separation despite apparently normal machinery

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: Sampling point integrity and representativeness
  Check: Verify sampling point is in vertical section of effluent piping near OWS outlet, with adequate pressure (≥0.2 bar) and flow rate (≥3 l/min). Check piping is sealed, inspect for tampering or bypass valves. Verify sample line has no isolation points.
• Area: 15ppm bilge alarm accuracy and response time
  Check: Test alarm calibration within ±5 ppm accuracy. Verify response time ≤5 seconds for alarm activation. Test automatic overboard discharge valve closure within ≤20 seconds total. Check alarm has audible/visual indication. Verify alarm stores operational data (date, time, status) for minimum 18 months.
• Area: Coalescer and filter element condition and replacement
  Check: Inspect coalescer for blockage, degradation, or sediment accumulation. Check filter elements for fouling or clogging (service life typically 1-2 years). Verify replacement schedule compliance. Inspect internal seals and gaskets for integrity. Check heater elements (if equipped) for corrosion or scaling.
• Area: Oil content monitor (OCM) calibration and functionality
  Check: Verify OCM calibration by manufacturer or authorized agent within 5-year intervals. Test with clean water supply to measuring cell. Confirm sensor precision for oil content regulation. Check OCM display/recording function. Test bypass activation when oil content <threshold. Confirm cell replacement after 5 years of service.
• Area: Separator tank condition, sludge, and sediment accumulation
  Check: Inspect separation chambers for cleanliness, oil residue, and water level sensors. Check for sludge or emulsion buildup at tank bottom. Verify automatic sludge/oil discharge valve operation. Test level sensors and transfer solenoid valves. Confirm oil recovery system functioning and recovered oil properly disposed.

Typ-universelle Inspektionspunkte fuer Oily Water Separator (15ppm) (verifiziert, 2026-06).

• Area: Sampling point integrity and representativeness
  Check: Verify sampling point is in vertical section of effluent piping near OWS outlet, with adequate pressure (≥0.2 bar) and flow rate (≥3 l/min). Check piping is sealed, inspect for tampering or bypass valves. Verify sample line has no isolation points.
• Area: 15ppm bilge alarm accuracy and response time
  Check: Test alarm calibration within ±5 ppm accuracy. Verify response time ≤5 seconds for alarm activation. Test automatic overboard discharge valve closure within ≤20 seconds total. Check alarm has audible/visual indication. Verify alarm stores operational data (date, time, status) for minimum 18 months.
• Area: Coalescer and filter element condition and replacement
  Check: Inspect coalescer for blockage, degradation, or sediment accumulation. Check filter elements for fouling or clogging (service life typically 1-2 years). Verify replacement schedule compliance. Inspect internal seals and gaskets for integrity. Check heater elements (if equipped) for corrosion or scaling.
• Area: Oil content monitor (OCM) calibration and functionality
  Check: Verify OCM calibration by manufacturer or authorized agent within 5-year intervals. Test with clean water supply to measuring cell. Confirm sensor precision for oil content regulation. Check OCM display/recording function. Test bypass activation when oil content <threshold. Confirm cell replacement after 5 years of service.
• Area: Separator tank condition, sludge, and sediment accumulation
  Check: Inspect separation chambers for cleanliness, oil residue, and water level sensors. Check for sludge or emulsion buildup at tank bottom. Verify automatic sludge/oil discharge valve operation. Test level sensors and transfer solenoid valves. Confirm oil recovery system functioning and recovered oil properly disposed.

Typ-universelle Inspektionspunkte fuer Oily Water Separator (15ppm) (verifiziert, 2026-06).

• Area: Check oil content monitor (15 ppm bilge alarm) for calibration and correct function per IMO MEPC.107(49) — sample temperatures up to 70 °C, zero-to-40 ppm range
  Check: Check oil content monitor (15 ppm bilge alarm) for calibration and correct function per IMO MEPC.107(49) — sample temperatures up to 70 °C, zero-to-40 ppm range
• Area: Inspect and clean the disc stack / centrifuge bowl; remove sludge and oil accumulation on a scheduled basis
  Check: Inspect and clean the disc stack / centrifuge bowl; remove sludge and oil accumulation on a scheduled basis
• Area: Verify feed pump operation, suction strainer condition, and inlet filter — clear blockages that reduce throughput or cause cavitation
  Check: Verify feed pump operation, suction strainer condition, and inlet filter — clear blockages that reduce throughput or cause cavitation
• Area: Check heating element / steam coil for proper bilge water pre-heating (typically to 60–70 °C) to aid separation efficiency
  Check: Check heating element / steam coil for proper bilge water pre-heating (typically to 60–70 °C) to aid separation efficiency
• Area: Inspect all seals, gaskets, and O-rings in the separator bowl and pipework for leaks or wear
  Check: Inspect all seals, gaskets, and O-rings in the separator bowl and pipework for leaks or wear
• Area: Test automatic discharge valves (clean-water outlet and dirty-side recirculation) for correct switching at the set ppm threshold
  Check: Test automatic discharge valves (clean-water outlet and dirty-side recirculation) for correct switching at the set ppm threshold
• Area: Review Oil Record Book entries and alarm/event log from the control unit (EPC 70 or equivalent) to confirm MARPOL compliance records are complete
  Check: Review Oil Record Book entries and alarm/event log from the control unit (EPC 70 or equivalent) to confirm MARPOL compliance records are complete
• Area: Inspect sludge holding tank level, sludge discharge pump, and associated pipework; verify sludge is transferred to a certified reception facility and not bypass
  Check: Inspect sludge holding tank level, sludge discharge pump, and associated pipework; verify sludge is transferred to a certified reception facility and not bypassed

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Area: 15ppm-Ölgehalt-Monitor (Optical Cell) Verschmutzung/Kalibrierung
  Check: Visual: Check optical cell for fouling; Function test via high-oil simulation (monthly); Calibration by authorized manufacturer agent every 12 months or before IOPP renewal survey (MEPC.107(49) § 4.2.11 requirement)
• Area: Coalescer inserts (filter/coalescer) blockage, wear or degradation
  Check: Routine inspection: Weekly check filter/coalescer elements for wear, clogging or damage; Replace upon blockage or visible wear (planned maintenance). Internal inspection: Clear separator chamber and inspect coalescer inserts for aging
• Area: Three-way valve (changeover valve) position and function
  Check: Daily: Check all valve positions; Monthly: Test three-way valve under simulated high-oil condition to confirm diversion to slop tank; Check for leakage at flange connections; Actuation without delay or abnormal noise
• Area: Process controller (EPC 60/70) alarms, data logging and sensor functions
  Check: Weekly: Check all sensors (temperature, pressure, speed) for functionality; Monthly: Check data logging device and review log data; Quarterly: Test all alarms and sensor outputs (document with protocol); Annually: Verify sensor calibration
• Area: Piping and flange connections: Leakage and corrosion
  Check: Daily: Visually inspect all pipes and valve connections for oil film, droplet formation or corrosion (especially hot water/drain areas); Weekly: Check flanges for reduction in clamping force or leakage under load; Immediately repair if signs of corrosion or leakage appear
• Area: Heater (if electrical) and preheating to setpoint temperature
  Check: Daily: Check outlet temperature of preheated bilge water (typical: 50-70°C, manufacturer-specific); Weekly: Inspect heating element surface for deposits, wear or charring; Monthly: Calibrate thermostats and temperature sensors; If setpoint temperature is not reached, check thermocouple or controller

Type-universal inspection/maintenance points for oily water separator (Alfa Laval, Mega-Schwarm 2026-06). Per-model specs not auto-filled.

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Insufficient wash-water flow caused by pump faults, blocked strainers or restricted piping produces deteriorating scrubbing performance and process alarms
• Fouled or damaged spray and distribution components cause uneven gas cleaning, abnormal temperatures or unstable emission readings
• Failed pH, turbidity, flow, pressure or emission-monitoring instrumentation causes implausible values, compliance alarms or loss of automatic control
• Deposits, corrosion or erosion in the scrubber, drains and associated piping cause leakage, restriction or increasing exhaust backpressure
• Control-valve, actuator, dosing or automation faults prevent correct routing or conditioning of wash water and can force the system out of compliant operating mode

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Separation-element fouling caused by sludge, detergents or excessive oil loading, resulting in poor separation and repeated high-oil-content alarms
• Oil-content monitor contamination or calibration drift caused by dirty sample lines or sensor fouling, resulting in unstable or implausible readings
• Automatic recirculation or discharge-valve failure caused by actuator, solenoid or control faults, resulting in inability to route off-specification water correctly
• Feed-pump or suction problems caused by blockage, air ingress or pump wear, resulting in unstable flow and poor separator performance
• Internal leakage or bypassing caused by damaged seals, incorrect assembly or unauthorized piping changes, resulting in non-compliant operation or abnormal sample results

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Coalescer, filter or separation-stage fouling reduces separation efficiency and causes rising oil-content readings or automatic recirculation
• Oil-content monitor contamination, blocked sampling lines or calibration drift produces unstable readings, alarms or discharge shutdown
• Diverting-valve, solenoid or actuator faults prevent correct recirculation and cause sequence alarms
• Feed-pump seal wear or suction-side air ingress causes unstable flow, poor treatment performance or visible leakage
• Detergents or stable emulsions in bilge water overload the separation process and cause persistently high oil-content readings

• Area: Sampling point integrity and representativeness
  Check: Verify sampling point is in vertical section of effluent piping near OWS outlet, with adequate pressure (≥0.2 bar) and flow rate (≥3 l/min). Check piping is sealed, inspect for tampering or bypass valves. Verify sample line has no isolation points.
• Area: 15ppm bilge alarm accuracy and response time
  Check: Test alarm calibration within ±5 ppm accuracy. Verify response time ≤5 seconds for alarm activation. Test automatic overboard discharge valve closure within ≤20 seconds total. Check alarm has audible/visual indication. Verify alarm stores operational data (date, time, status) for minimum 18 months.
• Area: Coalescer and filter element condition and replacement
  Check: Inspect coalescer for blockage, degradation, or sediment accumulation. Check filter elements for fouling or clogging (service life typically 1-2 years). Verify replacement schedule compliance. Inspect internal seals and gaskets for integrity. Check heater elements (if equipped) for corrosion or scaling.
• Area: Oil content monitor (OCM) calibration and functionality
  Check: Verify OCM calibration by manufacturer or authorized agent within 5-year intervals. Test with clean water supply to measuring cell. Confirm sensor precision for oil content regulation. Check OCM display/recording function. Test bypass activation when oil content <threshold. Confirm cell replacement after 5 years of service.
• Area: Separator tank condition, sludge, and sediment accumulation
  Check: Inspect separation chambers for cleanliness, oil residue, and water level sensors. Check for sludge or emulsion buildup at tank bottom. Verify automatic sludge/oil discharge valve operation. Test level sensors and transfer solenoid valves. Confirm oil recovery system functioning and recovered oil properly disposed.

Typ-universelle Inspektionspunkte fuer Oily Water Separator (15ppm) (verifiziert, 2026-06).

• Area: Sampling point integrity and representativeness
  Check: Verify sampling point is in vertical section of effluent piping near OWS outlet, with adequate pressure (≥0.2 bar) and flow rate (≥3 l/min). Check piping is sealed, inspect for tampering or bypass valves. Verify sample line has no isolation points.
• Area: 15ppm bilge alarm accuracy and response time
  Check: Test alarm calibration within ±5 ppm accuracy. Verify response time ≤5 seconds for alarm activation. Test automatic overboard discharge valve closure within ≤20 seconds total. Check alarm has audible/visual indication. Verify alarm stores operational data (date, time, status) for minimum 18 months.
• Area: Coalescer and filter element condition and replacement
  Check: Inspect coalescer for blockage, degradation, or sediment accumulation. Check filter elements for fouling or clogging (service life typically 1-2 years). Verify replacement schedule compliance. Inspect internal seals and gaskets for integrity. Check heater elements (if equipped) for corrosion or scaling.
• Area: Oil content monitor (OCM) calibration and functionality
  Check: Verify OCM calibration by manufacturer or authorized agent within 5-year intervals. Test with clean water supply to measuring cell. Confirm sensor precision for oil content regulation. Check OCM display/recording function. Test bypass activation when oil content <threshold. Confirm cell replacement after 5 years of service.
• Area: Separator tank condition, sludge, and sediment accumulation
  Check: Inspect separation chambers for cleanliness, oil residue, and water level sensors. Check for sludge or emulsion buildup at tank bottom. Verify automatic sludge/oil discharge valve operation. Test level sensors and transfer solenoid valves. Confirm oil recovery system functioning and recovered oil properly disposed.

Typ-universelle Inspektionspunkte fuer Oily Water Separator (15ppm) (verifiziert, 2026-06).

• Area: Verify oil content monitor (OCM) calibration and 15 ppm alarm/shutoff function before each voyage as required by MARPOL Annex I
  Check: Verify oil content monitor (OCM) calibration and 15 ppm alarm/shutoff function before each voyage as required by MARPOL Annex I
• Area: Inspect and replace Adsorption Granular Media (AGM) / coalescing filter elements at manufacturer-specified intervals or when differential pressure exceeds limit
  Check: Inspect and replace Adsorption Granular Media (AGM) / coalescing filter elements at manufacturer-specified intervals or when differential pressure exceeds limit
• Area: Check bilge pump suction strainer / Y-strainer (1 mm mesh) for blockage and clean as required
  Check: Check bilge pump suction strainer / Y-strainer (1 mm mesh) for blockage and clean as required
• Area: Inspect all solenoid-operated overboard discharge and return-to-bilge valves for correct actuation and no leakage
  Check: Inspect all solenoid-operated overboard discharge and return-to-bilge valves for correct actuation and no leakage
• Area: Test automatic overboard discharge shutoff: confirm system closes discharge valve and opens bilge return when OCM reads >15 ppm
  Check: Test automatic overboard discharge shutoff: confirm system closes discharge valve and opens bilge return when OCM reads >15 ppm
• Area: Check bilge float switch (IP68 submersible type) for correct operation, cable integrity, and absence of debris around slosh shield
  Check: Check bilge float switch (IP68 submersible type) for correct operation, cable integrity, and absence of debris around slosh shield
• Area: Inspect separator vessel, pipework, and connections for corrosion, fouling, and tightness; verify pressure relief valve condition
  Check: Inspect separator vessel, pipework, and connections for corrosion, fouling, and tightness; verify pressure relief valve condition
• Area: Confirm Oil Record Book entries are complete and that ORB Part I (machinery spaces) is up to date per MARPOL requirements
  Check: Confirm Oil Record Book entries are complete and that ORB Part I (machinery spaces) is up to date per MARPOL requirements

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Verify oil content monitor (OCM) calibration and 15 ppm alarm/shutoff function before each voyage as required by MARPOL Annex I
  Check: Verify oil content monitor (OCM) calibration and 15 ppm alarm/shutoff function before each voyage as required by MARPOL Annex I
• Area: Inspect and replace Adsorption Granular Media (AGM) / coalescing filter elements at manufacturer-specified intervals or when differential pressure exceeds limit
  Check: Inspect and replace Adsorption Granular Media (AGM) / coalescing filter elements at manufacturer-specified intervals or when differential pressure exceeds limit
• Area: Check bilge pump suction strainer / Y-strainer (1 mm mesh) for blockage and clean as required
  Check: Check bilge pump suction strainer / Y-strainer (1 mm mesh) for blockage and clean as required
• Area: Inspect all solenoid-operated overboard discharge and return-to-bilge valves for correct actuation and no leakage
  Check: Inspect all solenoid-operated overboard discharge and return-to-bilge valves for correct actuation and no leakage
• Area: Test automatic overboard discharge shutoff: confirm system closes discharge valve and opens bilge return when OCM reads >15 ppm
  Check: Test automatic overboard discharge shutoff: confirm system closes discharge valve and opens bilge return when OCM reads >15 ppm
• Area: Check bilge float switch (IP68 submersible type) for correct operation, cable integrity, and absence of debris around slosh shield
  Check: Check bilge float switch (IP68 submersible type) for correct operation, cable integrity, and absence of debris around slosh shield
• Area: Inspect separator vessel, pipework, and connections for corrosion, fouling, and tightness; verify pressure relief valve condition
  Check: Inspect separator vessel, pipework, and connections for corrosion, fouling, and tightness; verify pressure relief valve condition
• Area: Confirm Oil Record Book entries are complete and that ORB Part I (machinery spaces) is up to date per MARPOL requirements
  Check: Confirm Oil Record Book entries are complete and that ORB Part I (machinery spaces) is up to date per MARPOL requirements

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding
  Check: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding reliably closes
• Area: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval
  Check: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval)
• Area: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
  Check: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
• Area: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
  Check: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
• Area: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
  Check: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
• Area: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting
  Check: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting or crevice corrosion
• Area: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book
  Check: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book (MARPOL Annex I)
• Area: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS)
  Check: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS) check and renew if necessary

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding
  Check: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding reliably closes
• Area: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval
  Check: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval)
• Area: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
  Check: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
• Area: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
  Check: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
• Area: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
  Check: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
• Area: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting
  Check: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting or crevice corrosion
• Area: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book
  Check: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book (MARPOL Annex I)
• Area: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS)
  Check: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS) check and renew if necessary

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding
  Check: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding reliably closes
• Area: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval
  Check: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval)
• Area: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
  Check: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
• Area: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
  Check: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
• Area: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
  Check: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
• Area: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting
  Check: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting or crevice corrosion
• Area: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book
  Check: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book (MARPOL Annex I)
• Area: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS)
  Check: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS) check and renew if necessary

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding
  Check: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding reliably closes
• Area: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval
  Check: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval)
• Area: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
  Check: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
• Area: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
  Check: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
• Area: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
  Check: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
• Area: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting
  Check: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting or crevice corrosion
• Area: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book
  Check: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book (MARPOL Annex I)
• Area: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS)
  Check: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS) check and renew if necessary

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Area: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding
  Check: Inspection of oil content in discharge water: check whether the 15-ppm bilge alarm responds correctly and the overboard shut-off valve upon alarm exceeding reliably closes
• Area: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval
  Check: Filter and coalescence elements: regular visual inspection and replacement of filter cartridges/media according to manufacturer's specification (operating hours or interval)
• Area: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
  Check: Pumps and valves: leak test, function of the automatic three-way valves (overboard valve, recirculation valve) and sludge discharge inspection
• Area: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
  Check: Instrumentation and sensors: calibration and functional test of the oil content sensor (OCM/OMD) as well as pressure gauges and temperature sensors
• Area: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
  Check: Compressed air supply: test for adequate and dry instrument air pressure (setpoint 4–6 bar) for pneumatic actuators
• Area: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting
  Check: Vessels and lines: visual inspection for corrosion, leaks and damage; inspection of AISI-316L stainless steel vessels for signs of pitting or crevice corrosion
• Area: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book
  Check: ORB entry (Oil Record Book): ensure that all bilge water transfers and alarm events are correctly and completely documented in the Oil Record Book (MARPOL Annex I)
• Area: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS)
  Check: Classification certificate and type approval: validity of the IMO MEPC 107(49) type approval and recognized class certificates (DNV, CCS, USCG, KR, RMRS) check and renew if necessary

Typ-universelle Inspektionspunkte fuer Oily Water Separator (verifiziert, 2026-06).

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter or separation-stage fouling reduces treatment efficiency and causes rising oil-content readings or discharge recirculation
• Oil-content monitor contamination or calibration drift causes implausible readings, alarms or automatic discharge shutdown
• Solenoid, diverting-valve or actuator failure prevents correct recirculation and may trigger an alarm or stop discharge
• Feed-pump seal wear or air ingress causes unstable flow, poor separation or visible leakage
• Improper detergent or emulsified bilge-water loading overwhelms the separation process and causes persistently high oil-content readings

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Poor separation caused by excessive oil, detergents or stable emulsions, noticed as high oil-content readings or frequent recirculation
• Coalescer/filter fouling caused by sludge and solids, noticed as high differential pressure and reduced throughput
• Oil-content-monitor drift or contamination caused by dirty sample cell or sensor faults, noticed as implausible readings or failed checks
• Automatic stop/recirculation valve fault caused by actuator or control problems, noticed as incorrect valve position during high-oil alarm
• Feed-pump or suction fault caused by blockage, air ingress or wear, noticed as low or unstable treatment flow
• Unauthorized or incorrect valve lineup caused by human error or tampering, noticed from bypass evidence, broken seals or piping inconsistency

• Coalescer, filter, or separation-stage fouling from sludge and solids raises pressure drop, reduces throughput, or causes poor separation
• Oil-content monitor contamination, calibration drift, or sampling-line blockage causes unstable readings, alarms, or diversion despite apparently clean water
• Valve, solenoid, or automatic stopping-device faults from sticking, air failure, or electrical problems prevent correct recirculation or overboard control
• Feed-pump wear, air ingress, or suction blockage causes low flow, loss of prime, cavitation, or inability to process the bilge tank
• Excessive emulsified oil, detergents, chemicals, or unsuitable bilge composition overwhelms separation performance and results in persistently high oil-content readings

• Area: Sampling point integrity and representativeness
  Check: Verify sampling point is in vertical section of effluent piping near OWS outlet, with adequate pressure (≥0.2 bar) and flow rate (≥3 l/min). Check piping is sealed, inspect for tampering or bypass valves. Verify sample line has no isolation points.
• Area: 15ppm bilge alarm accuracy and response time
  Check: Test alarm calibration within ±5 ppm accuracy. Verify response time ≤5 seconds for alarm activation. Test automatic overboard discharge valve closure within ≤20 seconds total. Check alarm has audible/visual indication. Verify alarm stores operational data (date, time, status) for minimum 18 months.
• Area: Coalescer and filter element condition and replacement
  Check: Inspect coalescer for blockage, degradation, or sediment accumulation. Check filter elements for fouling or clogging (service life typically 1-2 years). Verify replacement schedule compliance. Inspect internal seals and gaskets for integrity. Check heater elements (if equipped) for corrosion or scaling.
• Area: Oil content monitor (OCM) calibration and functionality
  Check: Verify OCM calibration by manufacturer or authorized agent within 5-year intervals. Test with clean water supply to measuring cell. Confirm sensor precision for oil content regulation. Check OCM display/recording function. Test bypass activation when oil content <threshold. Confirm cell replacement after 5 years of service.
• Area: Separator tank condition, sludge, and sediment accumulation
  Check: Inspect separation chambers for cleanliness, oil residue, and water level sensors. Check for sludge or emulsion buildup at tank bottom. Verify automatic sludge/oil discharge valve operation. Test level sensors and transfer solenoid valves. Confirm oil recovery system functioning and recovered oil properly disposed.