Change document for mca construction – fire protection, fire detection and fire extinction

Implementing Revised International Convention for the Safety of Life at Sea (SOLAS Chapter ll-2, 2002) Came into force 1 July 2002. Revised February 2005

Click Here to download a printable version of this document.(PDF 96KB)

SUMMARY OF CHANGES

Changes are highlighted in yellow.                                                                                                            

Replace Page 109 and Page 110 with Page 109 REV 02/05 and Page 110 REV 02/05

1. The line "G52. Heat Transmission..." is amended to read "G51.2 Heat
transmission of cable hangers and similar fittings on 'A' Class divisions"

2. The line "G52.1 Cable-tray hangers" is deleted.

3. Paragraph "G52.1.1" is renumbered as "G51.2.1"

4. A new heading "G52 Surface fittings on 'B' Class divisions" is inserted
after paragraph "G51.2.1"

5. Paragraph "G52.2 Lighting..." is amended to read "G52.1 Lighting
fittings in 'B' Class ceilings"

6. Paragraph "G52.2.1" is renumbered as "G52.1.1"

7. Paragraph "G52.3 Electric cables..." is amended to read "G52.2 Electric
cables inside 'B' Class boards, panels or jointing profiles"

8. Paragraph "G52.3.1" is renumbered as "G52.2.1"

ssb
(The ribands of insulation at boundaries and intersections are shown double
hatched.)
Figure 9.15 Two Profiles of a typical Main Zone Bulkhead insulated on the fore
and after sides.

SSB

(The ribands of insulation at boundaries and intersections are shown double hatched)

Figure 9.16 Plan view of a typical Main Zone Bulkhead in association with other ‘A’ Class Bulkheads.

(Figures 9.15, 9.16 and 9.17 (see page 110) illustrate typical examples of where
continuation ribands of insulation are necessary.)

G51.2 Heat transmission of cable hangers and similar fittings on 'A' Class divisions                                            

SSB

(The ribands of insulation at boundaries and intersections are shown double-
hatched.)

Figure 9.17 Three methods of insulating a typical machinery casing

G51.2.1 Hangers used to support cable trays, suspended ceilings etc. and welded
to deck beams or bulkhead frames should be insulated for a length of 450mm from
the plating and to the same standard as the plating insulation. If the cross-sectional
area of the hanger is less than 100mm² this requirement may be waived.

G52 Surface fittings on 'B' Class divisions

G52.1 Lighting fittings in 'B' class ceilings

G52.1.1 Lighting fittings should preferably be surface mounted on a 'B' Class
ceiling, but when a fitting penetrates the ceiling it should be of steel or covered by a
steel box and fastened effectively to the ceiling in order to maintain the integrity of
the ceiling. When the ceiling is of B-15 standard the steel light fitting or steel cover
should be covered by a mineral wool insulation which has been approved for A-15
standard, the insulation being effectively secured to the fitting or cover.
Alternatively the light fitting may be boxed-in using a 'B' Class material having a
thickness appropriate to B-15 standard.

G52.2 Electric cables inside 'B' Class boards, panels or jointing profiles

G52.2.1 Electric cables should not be fitted in ducts arranged in boards or panels
from which 'B' Class bulkheads or linings are constructed or in the jointing profiles
unless a bulkhead incorporating cables and switches has been successfully fire
tested. Only cables from switches and/or power sockets situated on the same side
of a bulkhead or lining should be led through a duct or profile.