Division .4 F1

‘ B ’ class divisions are those divisions formed by bulkheads, decks, ceilings or linings which comply with the following:

1. .1

   they shall be so constructed as to be capable of preventing the passage of flame to the end of the first half hour of the standard fire test;

2. .2

   they shall have an insulation value such that the average temperature of the unexposed side will not rise more than 140 °C above the original temperature, nor will the temperature at any one point, including any joint, rise more than 225 °C above the original temperature within the time listed below:

   class ‘ B-15 ’	15 min
   class ‘ B-0 ’	0 min

3. .3

   they shall be constructed of approved non-combustible materials and all materials entering into the construction and erection of ‘ B ’ class divisions shall be non-combustible, with the exception that combustible veneers may be permitted provided they meet other requirements of this chapter;

4. .4

   the Administration of the flag State shall require a test of a prototype division to ensure that it meets the above requirements for integrity and temperature rise in accordance with IMO Resolution A.754(18).

   For class B, C and D ships constructed on or after 1 January 2003 , ‘ IMO Resolution A.754(18) ’ shall read ‘ Fire Test Procedures Code ’ .