Q-SOx 70MW hybrid system installed on board MSC MARGRIT XIII (IMO 9465318)

Six-monthly visual inspection of absorber for signs of erosion and corrosion; pressure test of spray headers (low pressure = erosion); inspection for wear on venturi walls and deflector plates

Weekly inspection of spray headers and header on plugging or erosion; inspection of liquid pressure gauges to detect abnormally low pressures (indicator of erosion); six-monthly internal inspections for plugged or eroded nozzles

Annual full service and calibration of all sensors by certified technicians; regular inspection for probe fouling and sensor sensitivity; calibrate CEMS and water monitoring systems per manufacturer specifications

Continuous monitoring of inlet and outlet water quality; documentation of pH (min. 6.5), PAH, turbidity, temperature (max. 60°C); annual sampling to be performed no later than after first year of operation; 3-year retention of all test results

Wall thickness measurements of all effluent pipes and overboard lines at every annual class survey (DNV requirement); visual inspections for signs of corrosion and erosion; inspection of integrity of pipe supports and welds; particular attention to acid corrosion prior to seawater dilution

Six-monthly internal inspections of mist eliminator for fouling, plugging and corrosion; inspection for solids accumulation in eliminator; functional test of eliminator washdown systems; cleaning or replacement when damaged