PSC deficiency code 07109: Fixed fire extinguishing installation

Area 07 Fire safety

This code covers the fixed systems that put out a fire in a space without anyone going in: CO2 or other gas systems for the engine room, pump room and cargo holds, foam systems, local application water mist and pressure water-spraying. When the inspector writes this code, the doubt is whether the system would discharge the right quantity into the right space when someone pulls the release.

What the inspector looks at

Expect a visit to the CO2 room or the system's control station.

  • Are cylinder contents verified (weighed or level-measured) and recorded within the service interval?
  • Is there a current service report from an approved service company?
  • Are release controls, pilot cylinders and the main valves in good order, with operating instructions posted at the release station?
  • Does the release alarm (audible and visual) work in the protected space before gas is released?
  • Are distribution pipes and nozzles intact, clear and supported, and have lines been blown through when due?
  • For water mist and foam: pump, sections, foam concentrate quantity and its test certificate.

Common findings

  • CO2 cylinders contents not verified / annual service overdue
  • Fixed CO2 system release instructions not posted
  • CO2 release alarm in engine room not operational
  • Flexible hoses on CO2 cylinders deteriorated
  • CO2 room used as store
  • Foam concentrate not tested, no certificate

The rule behind it

SOLAS Chapter II-2, Regulation 10 (fire fighting) requires fixed systems in specific spaces. The design and arrangement standards are in the FSS Code: Chapter 5 for fixed gas systems, Chapter 6 for foam and Chapter 7 for pressure water-spraying and water mist. SOLAS II-2 Regulation 14 requires the systems to be maintained and kept ready for use, and IMO has issued maintenance and inspection guidelines for fire protection systems in general and for fixed CO2 systems in particular.

Action codes you are likely to see

Missing instructions or a store cleared out of the CO2 room may be marked 10. An overdue service or unverified contents typically gets 17, since the system's readiness is unknown until it's checked. The fixed fire extinguishing installation is among the areas the IMO port State control procedures list as examples where failure can justify detention, so a system that can't be released, has lost contents or has an inoperative release alarm in a manned space can lead to 30. See action taken codes.

How to close it

Bring in an approved service company to verify contents, test the release gear and alarms and issue a service report. Replace leaking or empty cylinders, hoses and any damaged pipework, and blow through the lines if that is part of the finding. Keep the service report, updated records and photos with the Form B. Related: fire detection and alarm system and fire dampers, which have to close for a gas system to work.

Questions

Is an overdue CO2 service a detainable deficiency?

An overdue service with no other faults is usually treated as rectify before departure. It becomes a detention risk when the contents are actually low, the release doesn't work or the alarm fails.

Who can service a fixed CO2 system?

A service company approved by the flag administration or its RO for that type of system. The crew can carry out routine checks from the maintenance plan, but the periodic service report has to come from an approved company.

Does the CO2 release alarm have to be tested?

Yes, the alarm warning people to leave the protected space has to work, and its test should be recorded.

Sources

Written by the SuperRonin team from the sources above. Last updated 27 Oct 2026. This page explains the rules; the regulation, the PSC officer and your flag and class have the final word. If something here doesn't match what you see on board, write to [email protected] and we'll correct it.

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