4 Construction
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.951(23) – Improved Guidelines for Marine Portable Fire Extinguishers – (Adopted on 5 December 2003) - Annex - Improved Guidelines for Marine Portable Fire Extinguishers - 4 Construction

4 Construction

  4.1 The construction of an extinguisher should be designed and manufactured for simple and rapid operation, and ease of handling.

  4.2 Extinguishers should be manufactured to a recognized national or international standardfootnote, which includes a requirement that the body, and all other parts subject to internal pressure, be tested:

  • .1 to a pressure of 5.5 MPa or 2.7 times the normal working pressure, whichever is the higher, for extinguishers with a service pressure not exceeding 2.5 MPa; or

  • .2 in accordance with the recognized standard for extinguishers with a service pressure exceeding 2.5 MPa.

  4.3 In the design of components, selection of materials and determination of maximum filling ratios and densities, consideration should be given to the temperature extremes to which extinguishers may be exposed on board ships and operating temperature ranges specified in the recognized standards.

  4.4 The materials of construction of exposed parts and adjoining dissimilar metals should be carefully selected to function properly in the marine environment.


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