Exhaust Gas Cleaning System (Scrubber)
A scrubber sprays alkaline water or seawater through the exhaust stream to strip out sulphur oxides, letting a ship keep burning cheaper high-sulphur fuel oil while meeting the global sulphur cap that would otherwise force a switch to low-sulphur fuel.
Read more — Exhaust Gas Cleaning System (Scrubber) explained ▾
What makes this type distinct
A scrubber is an exhaust gas after-treatment system, not an engine modification - it sits in the exhaust line downstream of the engine or boiler and washes sulphur oxides out of the gas stream with water, letting the vessel keep burning cheaper high-sulphur fuel oil while still meeting the sulphur limits set for exhaust emissions. The distinction that matters commercially is open-loop versus closed-loop operation: an open-loop scrubber uses seawater's natural alkalinity and discharges the washwater overboard after treatment, while a closed-loop scrubber circulates fresh water dosed with caustic soda and only bleeds off a small treated stream, storing the rest for eventual discharge or landing ashore. Hybrid units switch between the two depending on where the ship is trading, since a growing number of ports and coastal states restrict or ban open-loop discharge.
Main components
Scrubber tower
Vertical vessel in the exhaust line where wash water is sprayed through the rising exhaust gas, stripping sulphur oxides and particulates as the gas passes through.
Washwater treatment plant
Separators and filters that clean the washwater of soot and residues before discharge or recirculation, plus a dosing system for caustic soda on closed-loop units.
Monitoring system
Continuous emission monitoring for SOx and particulates in the exhaust, and washwater monitoring for pH, PAH, turbidity and nitrates before any overboard discharge.
Residue tank
Sludge tank collecting the separated residues from washwater treatment, landed ashore as waste at suitable ports.
Bypass arrangement
A duct allowing exhaust to bypass the scrubber if it is out of service, generally only permitted for limited periods and outside emission control areas.
Selection and sizing
Scrubber capacity is matched to the engine and boiler exhaust flow it treats, and the choice between open-loop, closed-loop, or hybrid depends on the ship's trading pattern - a vessel spending significant time in ports or waters that restrict open-loop discharge needs closed-loop capability even if open-loop would otherwise be cheaper to run. Space and weight for the tower, treatment plant, and residue tanks compete with cargo or accommodation space, which is a bigger factor on smaller ships than on large tankers or bulk carriers with room to spare. Fuel cost differential between high-sulphur and compliant low-sulphur fuel drives the payback calculation but is not itself a technical sizing input.
- Exhaust flow rate from the engines and boilers to be treated
- Open-loop, closed-loop, or hybrid operation against the vessel's trading pattern
- Space and weight available for tower, treatment plant, and residue tanks
- Washwater discharge criteria in the ship's planned trading areas
- Monitoring and data-logging capability to demonstrate continuous compliance
Regulations and class
Scrubbers are the recognised equivalent method under MARPOL Annex VI for meeting the sulphur limit on fuel oil, in place of burning compliant low-sulphur fuel directly, provided the system meets the IMO's guidelines for exhaust gas cleaning systems and washwater discharge criteria. A growing list of ports, coastal states, and some entire regions restrict or prohibit open-loop discharge within their waters, so compliance is not just about the ship's flag but about where it trades. Class societies survey the installation, issue an EGC scheme certificate confirming the system meets the applicable guideline, and require ongoing monitoring records to be kept and available for port state control inspection.
Typical faults
| Fault | Consequence |
|---|---|
| Washwater monitoring sensor drifting or fouled | Discharge exceeds limits without an alarm, port state detention risk |
| Scrubber tower internals scaled or corroded | Reduced SOx removal efficiency, exhaust back-pressure rising |
| Residue tank overfilled or not landed on schedule | No spare capacity, forcing an unplanned discharge or operational restriction |
| Bypass used outside permitted conditions | Non-compliant SOx emissions, logged and detectable at inspection |
| Caustic dosing system miscalibrated on closed-loop units | Washwater pH out of range, treatment plant strain |
What to look for in a supplier
- EGC scheme documentation matching the flag and class the vessel carries
- Proven hybrid capability if the vessel trades through open-loop-restricted waters
- Realistic exhaust back-pressure figures at full engine load, not just at a test condition
- Monitoring package that logs and stores compliance data automatically for inspection
- Service support able to reach the ports the vessel actually calls at, not just major hubs
Track washwater discharge restrictions for every port on the itinerary before arrival, not on arrival - a scrubber that has to switch to closed-loop mode with no warning can run out of storage capacity faster than expected.
6 manufacturers · 113 models
Yara Marine
33- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Fouling, scaling or blocked spray paths reduce treatment effectiveness and cause abnormal pressure drop or emissions readings
- Pump, blower or fan faults cause low circulation or gas flow and system shutdown
- Analyzer or sensor contamination causes incorrect gas-quality, emissions or oxygen readings
- Seal, valve or piping leakage causes liquid or gas leakage and unstable process pressure
- Control, dosing or interlock faults cause off-specification gas, alarm conditions or automatic shutdown
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Fouling, scaling or blocked spray paths reduce treatment effectiveness and cause abnormal pressure drop or emissions readings
- Pump, blower or fan faults cause low circulation or gas flow and system shutdown
- Analyzer or sensor contamination causes incorrect gas-quality, emissions or oxygen readings
- Seal, valve or piping leakage causes liquid or gas leakage and unstable process pressure
- Control, dosing or interlock faults cause off-specification gas, alarm conditions or automatic shutdown
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, or other service supply caused by a tripped protection device, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults can cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance can lead to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
Andritz Marine
21- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
Langh Tech
21- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Fouling or deposit build-up caused by poor combustion, contaminated fluid or exhaust soot can reduce heat transfer or flow and produce higher temperatures or loss of capacity
- Leakage from tubes, gaskets, seals or casing caused by corrosion, thermal cycling or erosion can appear as fluid loss, pressure decay or cross-contamination
- Burner, ignition or fuel-control faults where combustion is used can cause flame failure, unstable firing, smoke or shutdown alarms
- Fan, pump or actuator faults caused by mechanical wear or electrical problems can reduce circulation, airflow or treatment effectiveness
- Sensor, control or safety-interlock faults caused by drift, wiring defects or contamination can trigger nuisance trips or allow unstable operation
Pacific Green Marine
21- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Washwater or circulation-pump failure caused by wear, blockage or electrical faults, resulting in low flow and an emission-compliance alarm
- Nozzle or tower fouling caused by soot, scale or deposits, resulting in poor gas-liquid contact, rising backpressure or reduced treatment performance
- Sensor or analyzer drift caused by contamination, calibration error or electronics faults, resulting in implausible emissions or washwater readings
- Valve, reagent or dosing failure caused by actuator, blockage or control faults, resulting in incorrect process chemistry or unavailable operation
- Corrosion or leakage caused by acidic washwater and aggressive condensate, resulting in thinning, visible leakage or damaged piping and tower internals
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
Clean Marine
15- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Loss of electrical, hydraulic, pneumatic, fluid, or other service supply from a protection trip, leakage, blockage, or upstream fault results in failed starting or loss of function
- Mechanical wear, corrosion, fouling, or contamination of moving and wetted parts causes increased noise, leakage, sticking, vibration, or reduced performance
- Seal, gasket, hose, cable, or connection deterioration from age, heat, vibration, or environmental exposure produces visible leakage, intermittent signals, or loss of pressure
- Sensor, switch, actuator, relay, or control-system faults cause incorrect indication, nuisance alarms, failed automatic sequences, or loss of remote control
- Incorrect adjustment, assembly, or maintenance leads to unstable operation, recurrent alarms, or performance that differs from the vessel's normal baseline
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Spray-nozzle or packing fouling reduces gas-liquid contact and causes poor emissions performance or rising pressure drop
- Wash-water pump or circulation faults cause low flow and automatic system derating or shutdown
- Analyzer or sensor contamination produces incorrect emissions, pH or process readings and compliance alarms
- Scale, corrosion or solids buildup damages tower internals, piping or treatment equipment
- Valve, dosing or control faults cause unstable chemistry, bypass conditions or failed operating sequence
- Nozzle or washwater path fouling, typically indicated by poor gas cleaning, pressure change or emission alarm
- Pump failure or low washwater flow, typically indicated by scrubber trip, high outlet emissions or temperature
- Analyzer/sensor drift or failure, typically indicated by invalid compliance readings or alarms
- Corrosion/erosion of tower internals and piping, typically indicated by leakage, thinning or reduced performance
- Control or reagent-dosing fault, typically indicated by unstable pH/chemistry or inability to meet emission target
Wärtsilä
2- Urea dosing pump, injector or line blockage causes insufficient reagent delivery and rising NOx emissions or dosing alarms
- Catalyst fouling, poisoning or ageing reduces conversion efficiency and causes emission-compliance deviation
- Crystallized reagent deposits in the mixer or injector create restriction and uneven ammonia distribution
- Exhaust-temperature or NOx-sensor faults cause incorrect control decisions, alarms or loss of closed-loop dosing
- Control-system, air-supply or reagent-quality problems cause unstable dosing, high ammonia slip or system shutdown