Gas cargo manifolds
What is being checked
The inspector is checking whether gas-carrier liquid and vapour manifolds matches the approved arrangement, is physically ready, is tested through its complete operating path and is understood by responsible personnel.
Ready onboard
0/6 completePractice questions
Answer aloud, then open the preparation point.
1What is the purpose and operating limit of gas-carrier liquid and vapour manifolds?
Explain the protection provided by line identification, material and pressure rating, valves, blanks, drains, ESD valves, insulating arrangements, supports and spill or drip control, including the condition that requires intervention.
2How is the complete operating path tested?
Use the approved safe test method to prove valve and ESD operation, leak test, blank and drain condition, gauge verification and line-identification check, including the final alarm, trip, movement or indication.
3What happens if the equipment is unavailable?
Notify the Master and terminal as applicable, stop or restrict the affected operation, establish approved compensating controls and obtain repair or formal authority.
4Show the latest maintenance and defect history.
Match the physical identity to PMS, calibration or service records and verify that any temporary control has been closed.
5Which indication proves the equipment is in its safe condition?
Identify the local and remote indication, its source, alarm set point and how a false or frozen signal would be detected.
Where an observation may arise
The fitted system, drawing, manual or certificate did not agree.
Inspection identified wrong line, passing valve, damaged flange, trapped liquid, missing blank, low-rated fitting, poor support or unreadable label.
Records did not prove valve and ESD operation, leak test, blank and drain condition, gauge verification and line-identification check through the complete operating path.
An alarm, trip, interlock or indication was isolated, incorrect, overdue for test or not understood.
PMS, calibration, service or repair evidence was missing, overdue or not traceable to the item.
Responsible personnel could not explain line identification, material and pressure rating, valves, blanks, drains, ESD valves, insulating arrangements, supports and spill or drip control, operating limitations or failure response.
Master's practical note
Trace one signal or flow path from the field device to the CCR or ECR and back to the final protective action. A successful local test alone may not prove the full system.
Equipment boundary and references
Equipment boundary: Use approved test modes and maker instructions. Do not bypass an interlock, release cargo or defeat protection merely to satisfy an inspection demonstration.
References
- OCIMF SIRE 2.0 Question Library Part 2, Version 1.0, Question 8.6.8
- IMO IGC Code
- ICS Tanker Safety Guide (Liquefied Gas)
Last reviewed: 2026-09-14