QUESTION 8.99.11

Independent cargo-line-up verification

Oil, Chemical, LPG, LNGCargo Control Room, Main Deck

What is being checked

The inspector is checking whether the vessel's arrangements for independent verification of the complete cargo liquid, vapour and venting line-up are planned, understood and executed using vessel-specific limits, verified line-up, effective communication and traceable records.

Ready onboard

0/6 complete

PROCEDUREThe vessel procedure defines responsibility, sequence, stop criteria and two-person independence, physical tracing, valve and blank positions, crossover and drain control, vapour path, vent availability, manifold connection and change management.PLANThe current plan uses actual cargo, tank, terminal and equipment information and addresses two-person independence, physical tracing, valve and blank positions, crossover and drain control, vapour path, vent availability, manifold connection and change management.LINE-UPTwo competent persons independently verify the critical liquid, vapour, inert-gas and venting path before transfer or system operation.TEAMThe responsible officers and ratings understand their station, communication method, monitoring duty and authority to stop.EVIDENCERecords reconcile the plan with signed line-up checklist, cargo plan, piping diagram, valve positions, deck inspection and any later change record.ABNORMAL RESPONSEThe procedure gives immediate actions for same-person self-check, desk verification, wrong valve, open crossover, missing blank, closed vent path, open drain or unrecorded change.

Practice questions

Answer aloud, then open the preparation point.

1What are the critical controls for independent verification of the complete cargo liquid, vapour and venting line-up?

Explain the vessel-specific sequence, limits and safeguards for two-person independence, physical tracing, valve and blank positions, crossover and drain control, vapour path, vent availability, manifold connection and change management.

2How was the line-up independently verified?

Identify both verifiers, the physical route checked, valve-position confirmation and the record completed before starting.

3What conditions require the operation to stop?

Stop for loss of communication, unexpected pressure or level, leakage, alarm, incorrect line-up or any of these specific failures: same-person self-check, desk verification, wrong valve, open crossover, missing blank, closed vent path, open drain or unrecorded change.

4Show the most recent complete operation.

Trace the plan through signed line-up checklist, cargo plan, piping diagram, valve positions, deck inspection and any later change record, including any deviation and its authorisation.

5What is the first response to an abnormal condition?

Stop or stabilise the operation, raise the alarm, isolate the source where safe, verify tank and system condition and coordinate with the terminal and Master.

Where an observation may arise

PROCEDURE GAP

The vessel procedure did not adequately address two-person independence, physical tracing, valve and blank positions, crossover and drain control, vapour path, vent availability, manifold connection and change management.

GENERIC PLAN

The plan was copied or did not reflect the actual cargo, tank condition, terminal limits or equipment status.

LINE-UP ERROR

A critical valve or connection was not independently checked, or the recorded position conflicted with the physical system.

KNOWLEDGE GAP

Responsible personnel could not explain their limits, monitoring duty, communications or stop-work authority.

RECORD CONFLICT

The plan, log or checklist could not be reconciled with signed line-up checklist, cargo plan, piping diagram, valve positions, deck inspection and any later change record.

ABNORMALITY UNCONTROLLED

The response did not adequately control same-person self-check, desk verification, wrong valve, open crossover, missing blank, closed vent path, open drain or unrecorded change.

Master's practical note

Use the latest real operation, not a model checklist. Follow one critical parameter from the agreed plan to the CCR display, deck condition and final record.

Equipment boundary and references

Equipment boundary: Apply the vessel's approved cargo manuals, cargo-specific data, terminal agreement and company limits. Do not operate cargo equipment solely to demonstrate it during an inspection.

References

OCIMF SIRE 2.0 Question Library Part 2, Version 1.0, Question 8.99.11
OCIMF ISGOTT, Sixth Edition
ISM Code section 7

Last reviewed: 2026-09-14