8 Two-year testing and inspections
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1432 – Revised Guidelines for the Maintenance and Inspection of Fire Protection Systems and Appliances – (31 May 2012) - Annex – Revised Guidelines for the Maintenance and Inspection of Fire Protection Systems and Appliances - 8 Two-year testing and inspections

8 Two-year testing and inspections

 Two-year inspections should be carried out to ensure that the indicated actions are taken for the specified equipment.

  8.1 Fixed gas fire-extinguishing systems

  • .1 all high pressure extinguishing agents cylinders and pilot cylinders should be weighed or have their contents verified by other reliable means to confirm that the available charge in each is above 95 per cent of the nominal charge. Cylinders containing less than 95 per cent of the nominal charge should be refilled; and

  • .2 blow dry compressed air or nitrogen through the discharge piping or otherwise confirm the pipe work and nozzles are clear of any obstructions. This may require the removal of nozzles, if applicable.

  8.2 Fixed dry chemical powder systems

  • .1 blow dry nitrogen through the discharge piping to confirm that the pipe work and nozzles are clear of any obstructions;

  • .2 operationally test local and remote controls and section valves;

  • .3 verify the contents of propellant gas cylinders (including remote operating stations);

  • .4 test a sample of dry chemical powder for moisture content; and

  • .5 subject the powder containment vessel, safety valve and discharge hoses to a full working pressure test.

Parent topic: Annex – Revised Guidelines for the Maintenance and Inspection of Fire Protection Systems and Appliances
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