Test for "A", "B" and "F" Class Divisions (Annex 1
to Part 3)
1.1 "A" class pipe penetrations and cable transits
that are:
-
.1 constructed without structural sleeves of minimum
3 mm thickness and minimum 60 mm length welded or bolted to the division;
and/or
-
.2 constructed with removable, soft or intumescent
filling material,
are "those types of constructions which do not utilize conventional
components of horizontal and vertical divisions" (appendix 1, paragraph
1.13) and are to be subject to additional testing and/or design criteria
as described below.
2
Additional testing/design
criteria
2.1 Filling materials should be adequately secured
by bonded materials or mechanical means that cannot be removed without
the use of tools in order to prevent damage by normal ship vibrations
and pressures.
2.2 The pipe penetration/cable transit should
not have any visible openings. It should not be possible to manually
penetrate any part of the penetration with a 6 mm gap gauge, as described
in paragraph 7.10 of annex 1 to part
3 of the 2010 FTP Code.
3.1 Penetrations in structural divisions should
not impair the structural strength of the division. The structural
make-up of the penetration is to be fully described so that its use
and the need for additional stiffening for the division can be fully
assessed.