Cargo Compressor Pre-Start and Running Checks

Inspection template for gas carrier cargo compressor pre-start and running checks, covering lube oil, oil separator, seal system, suction separator, discharge temperature limits, and operating safety controls.

Inspection Details

• Compressor identification recorded
  Record compressor tag number, location, and cargo system served.
• Inspection phase selected
  Select whether this is a pre-start check or running check.
• Cargo type recorded
  Record the cargo or cargo vapor service for temperature limit verification.

Lube Oil System

• Lube oil level within operating range
  Verify lube oil level is within the manufacturer-specified operating range.
• Lube oil condition acceptable
  Check for discoloration, contamination, foaming, or abnormal odor.
• Lube oil pressure within acceptable range
  Record actual lube oil pressure and confirm it is within the acceptable operating range.
• Lube oil filters and strainers free of abnormal restriction
  Verify no differential pressure alarm, blockage indication, or visible leakage at filters/strainers.

Oil Separator and Seal System

• Oil separator operating normally
  Verify the oil separator shows no abnormal carryover, leakage, vibration, or alarm condition.
• Seal system intact and leak-free
  Inspect shaft seals or seal arrangements for visible leakage, abnormal noise, or loss of sealing medium.
• Seal supply pressure within acceptable range
  Record seal supply pressure and confirm it remains within the manufacturer or vessel procedure limit.
• No visible oil or gas leakage at separator or seal connections
  Check flanges, drains, vents, and instrument connections for visible leakage.

Suction Separator and Suction Conditions

• Suction separator drained and functioning
  Verify the suction separator is free of excessive liquid accumulation and drain arrangements are functioning.
• Suction pressure within operating range
  Record suction pressure and confirm it is within the acceptable operating range for the cargo condition.
• Suction line free of abnormal frost, vibration, or noise
  Inspect the suction line and separator area for signs of abnormal operation.

Running Checks and Temperature Limits

• Discharge temperature within cargo-specific limit
  Record actual discharge temperature and verify it does not exceed the cargo-specific limit defined by the vessel procedure or cargo data sheet.
• Compressor vibration and noise normal
  Check for abnormal vibration, knocking, or noise during operation.
• Operating parameters stable
  Verify pressure, temperature, and oil system readings are stable and no active alarms are present.