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RightShip Guide

THE DEEPDRAFT · RIGHTSHIP PREPARATION

Quick-closing valves and individual-engine isolation

RISQ 7.10Section 7A · Fuel Management (Oil Fuel)Source marking: V

Applicability: Quick-closing valves as fitted; the additional independent-engine isolation guidance concerns multi-engine installations with a common fuel source.

What is being checked

Fuel and lubricating-oil isolation remains effective.

Ready on board

0 / 6 checked

Check the vessel’s actual procedures, equipment and records against these points from RISQ 3.2.

Keep quick-closing valves maintained, in good order and regularly tested, including storage, settling and service-tank outlets in machinery spaces, boiler room and emergency-generator room.Check the fitted local/remote actuation, whether pull-wire, hydraulic or compressed-air operated.For multi-engine installations sharing a fuel source, provide individual-engine fuel-supply and spill-pipe isolation without affecting other engines.Ensure individual-engine isolation can be operated from a location not made inaccessible by an engine fire.Review the source’s cited AMSA Marine Notice 2024/05 arrangement: a supply-line quick-closing valve between changeover valves and the engine, remotely actuated elsewhere in the machinery space.For ships built after June 2009, follow the source’s conditional guidance for valves or remote actuators at least five metres from the engine where possible, or protection by obstructions where that is not possible.

Practice questions

Preparation prompts derived from this entry, not an official inspector interview script.

1Should isolating one engine stop all engines on the common fuel source?

No. The source requires individual-engine isolation without affecting operation of the other engines.

2Is the described supply-line valve the only design allowed?

The PDF calls it one common solution. The functional isolation and safe-access requirements must be met.

Where a finding may arise

Missing evidence or defects inconsistent with the checks above may prevent a satisfactory answer. These are preparation concerns derived from the question, not explicit additional finding criteria or reported past observations.

Past observations for practice

Anonymised reports, manually reviewed before publication. These are reported experiences, not additional inspection requirements.

No reviewed observations have been added for this entry.

Share an observation for private review

Remove vessel, company and inspector names, report numbers, exact dates and confidential information. Do not paste a complete inspection report.

Source clarification

The PDF refers to AMSA Marine Notice 2024/05 and MSC.1/Circ.1321 pages 24–27. Its five-metre wording is conditional; no new universal retrofit instruction or fixed test interval is added.

References and source status

RightShip Inspection Ship Questionnaire, November 2025, version 3.2. Section 7A, page 87, reference 7.10.

The explanation, checklist and practice answer derive from the supplied questionnaire. Reported observations are separately contributed and manually reviewed; they are not official RISQ guidance.

Independent DeepDraft preparation guide, based on the supplied RISQ 3.2 questionnaire. Not an official RightShip product or inspection report.