1 The Maritime Safety Committee, at its ninetieth session (16 to 25 May 2012), with a view to providing more specific guidance for application of the relevant requirements of part 3 of the FTP Code, approved a unified interpretation of the FTP Code, prepared by the Sub-Committee on Fire Protection, at its fifty-fifth session, as set out in the annex.
2 Member Governments are invited to use the annexed unified interpretation as guidance when applying relevant provisions of part 3 of the FTP Code for ships constructed on or after 1 June 2012 and to bring the unified interpretation to the attention of all parties concerned.
MSC.1/Circ.1435 Annex, page 1
UNIFIED INTERPRETATION OF THE FTP CODE
Part 3, Appendix 1 – Testing and approval of ''A'' class divisions – fastening of insulation material and details of joints
To demonstrate that the tested "A" class assemblies are representative of that used on board ships, the following details should, as a minimum, when applicable, be clearly indicated in test reports and included in type approvals:
.1 type, thickness, density and number of layers of insulation material;
.2 size, types, materials and fixing methods of pins and washers;
.3 spacing between pins;
.4 maximum spacing between pins and adjacent joints;
.5 stepping of joints for multi-layers if applicable;
.6 insulation and pinning details on and around stiffeners;
.7 details of wire mesh, aluminium tape, etc., if used in the test;
.8 type approval test report should contain the information required by paragraphs 2.1.3, 2.2.3, 6.1 and 10.4 of resolution A.754(18); and
.9 type approval certificate should refer to drawing numbers of the test sample.