Aalborg IG System

Visual inspection through scrubber manholes; check spray nozzles for blockage (impairs cooling efficiency); inspect cooling pipes, floats, sensors for corrosion or soot deposits; verify cooling water flow and demister function

Verify gauge glass is clean and water level visible; check high/low level alarm float switches operational; inspect for water leakage, corrosion; in cold weather verify heating coil function and trace heating active; confirm low-level alarm functions

Verify P/V breaker opens at preset pressure/vacuum; check sight glass and fluid level (glycol-water mixture); inspect for leakage around valve stem; test differential pressure response; replace fluid if discolored/contaminated

Calibrate analyzer ≥24 hrs before cargo operations; log calibration results; verify O2 readout 2-4% during operation; replace probe/sensor if drift >0.5%; ensure analyzer sample line clear and inlet not fouled

Observe flue gas color (should be colorless/light gray, not black); monitor fuel/air ratio; inspect burner nozzles and air registers for clogging; verify combustion oxygen ≤4%; check fuel pump pressure/flow; inspect ignition electrode condition

Confirm non-return valves at deck seal outlet prevent backflow; verify pressure differential across deck seal maintained; listen for flow disturbance; schedule valve seat/seal inspection per Condition Audit; test with pressure gauge if vessel equipped