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MSC.1/Circ.1655

5 December 2022


UNIFIED INTERPRETATIONS OF SOLAS CHAPTER II-2


  1. The Maritime Safety Committee, at its 106th session (2 to 11 November 2022), with a view to providing more specific guidance on SOLAS regulation II-2/9, approved unified interpretations of SOLAS chapter II-2, prepared by the Sub-Committee on Ship Systems and Equipment, at its eighth session (28 February to 4 March 2022), as set out in the annex.


  2. Member States are invited to use the annexed unified interpretations as guidance when applying SOLAS regulation II-2/9, and to bring the unified interpretations to the attention of all parties concerned.


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MSC.1/Circ.1655

Annex, page 1


ANNEX


UNIFIED INTERPRETATIONS OF SOLAS CHAPTER II-2


CHAPTER II-2

Construction – Fire protection, fire detection and fire extinction


Regulation II-2/9.7.3.1.2 – Containment of fire, details of fire dampers and duct penetrations


The fire insulation required by regulation SOLAS II-2/9.7.3.1.2 should be provided only to the part of the duct and/or sleeve that is on the same side of the division being fire insulated, and be extended for a minimum of 450 mm along the duct and/or sleeve.


Regulation II-2/9.7.3.2 – Containment of fire, details of fire dampers and duct penetrations


When a duct passing through a division is to be in accordance with SOLAS regulations II-2/9.3.2 and II-2/9.7.3.2, no clearance should be allowed between the duct and the division.



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