Evac SGT

Visual inspection of membrane status and pressure differential readings; verify EcoScreen pre-treatment is properly operated for BOD load reduction; inspect transmembrane pressure (TMP) recordings - should remain stable within design specifications

Monthly biosolids level monitoring and sludge discharge procedures; verify mixed liquor suspended solids (MLSS) concentration matches design specifications; inspect sludge handling system for proper collection tank operation and maintenance

Verify 5% chlorine solution levels (ORCA II A) or electrolyte levels are within specifications; confirm automated dosing systems are functioning correctly; test effluent disinfection efficacy according to IMO MEPC 227(64) requirements

Quarterly sampling and testing of treated effluent for BOD, TSS, nitrogen and phosphorus levels; verify compliance with IMO MEPC 227(64) Chapter 4.2 requirements for passenger ships in special areas; maintain International Sewage Pollution Prevention Certificate documentation

Verify touchscreen control panel responsiveness; test automated shutdown procedures; confirm integration with ship's main automation system; check alarm and monitoring functions are properly logged and reviewed; ORCA IV B systems require 3-month maintenance interval verification