1 The Maritime Safety Committee, at its eighty-sixth session (27 May to 5 June 2009),
having considered the proposal by the Sub-Committee on Fire Protection, at its
fifty-third session, approved Guidelines for the maintenance and inspections of fixed
carbon dioxide fire-extinguishing systems (MSC.1/Circ.1318).
2 In order to address the need to clarify the hydrostatic testing regime for
high-pressure CO2 cylinders and to align the relevant requirements in the
Guidelines with those in the Revised guidelines for the maintenance and inspection of
fire protection systems and appliances (MSC.1/Circ.1432), the Committee, at its 103rd session (5 to 14 May 2021),
approved amendments to the above-mentioned Guidelines, prepared by the Sub-Committee on
Ship Systems and Equipment, at its seventh session, with a view to dissemination as
MSC.1/Circ.1318/Rev.1. The text of the Revised guidelines for the maintenance and
inspections of fixed carbon dioxide fire-extinguishing systems is set out in the
annex.
3 Member Governments are invited to apply the annexed Revised guidelines when inspecting
fixed carbon dioxide fire-extinguishing systems on board all ships and bring them to the
attention of ship designers, shipowners, equipment manufacturers, and other parties
concerned.
4 This circular supersedes MSC.1/Circ.1318.