9.2.1 These provisions have been formulated principally
for units having their hull superstructure, structural bulkheads,
decks and deckhouses constructed of steel.
9.2.2 Units constructed of other materials may
be accepted, provided that, in the opinion of the Administration,
they provide an equivalent standard of safety.
9.2.3 Structural fire protection details, materials
and methods of construction should be in accordance with the FTP Code,
as applicable, and SOLAS regulations
II-2/5.3 and II-2/6, as
applied to cargo ships.
Fire integrity of bulkheads and decks
9.2.4 In addition to complying with the specific provisions
for fire integrity of bulkheads and decks in this section and in section 9.3, the
minimum fire integrity of bulkheads and decks should be as prescribed in tables 9-1 and
9-2. Exterior boundaries of superstructures and deckhouses enclosing accommodation,
including any overhanging decks which support such accommodation, should be constructed
to “H-60” standard for the whole of the portion which faces and is within 30 m of the
centre of the rotary table. For units that have a movable substructure the 30 m should
be measured with the substructure at its closest drilling position to the accommodation.
The Administration may accept equivalent arrangements.
9.2.5 The following provisions should govern application of
the tables:
-
.1 Tables 9-1 and 9-2 should apply respectively to
the bulkheads and decks separating adjacent spaces.
-
.2 For determining the appropriate fire integrity
standards to be applied to divisions between adjacent spaces, such spaces are
classified according to their fire risk, as shown in categories (1) to (11) below.
The title of each category is intended to be typical rather than restrictive. The
number in parenthesis preceding each category refers to the applicable column or
row in the tables:
-
(1)
Control stations are spaces as defined in section 1.3.
-
(2)
Corridors means corridors and lobbies.
-
(3)
Accommodation spaces are spaces as defined in section 1.3, excluding
corridors, lavatories and pantries containing no cooking appliances.
-
(4)
Stairways are interior stairways, lifts and escalators (other than
those wholly contained within the machinery spaces) and enclosures thereto.
In this connection a stairway which is enclosed only at one level should be
regarded as part of the space from which it is not separated by a fire door.
-
(5)
Service spaces (low risk) are lockers, store-rooms and working spaces
in which flammable materials are not stored, drying rooms and laundries.
-
(6)
Machinery spaces of category A are spaces as defined in section 1.3.
-
(7)
Other machinery spaces are spaces as defined in section 1.3 other
than machinery spaces of category A.
-
(8)
Hazardous areas are areas as defined in section 1.3.
-
(9)
Service spaces (high risk) are lockers, store-rooms and working
spaces in which flammable materials are stored, galleys, pantries containing
cooking appliances, paint rooms and workshops other than those forming part
of the machinery space.
-
(10)
Open decks are open deck spaces, excluding hazardous areas.
-
(11)
Sanitary and similar spaces are communal sanitary facilities such as
showers, baths, lavatories, etc., and isolated pantries containing no
cooking appliances. Sanitary facilities which serve a space and with access
only from that space should be considered a portion of the space in which
they are located.
Table 9-1 Fire integrity of
bulkheads separating adjacent spaces
|
Spaces
|
(1)
|
(2)
|
(3)
|
(4)
|
(5)
|
(6)
|
(7)
|
(8)
|
(9)
|
(10)
|
(11)
|
| Control stations
|
(1)
|
A-0(d)
|
A-0
|
A-60
|
A-0
|
A-15
|
A-60
|
A-15
|
A-60(e)
|
A-60
|
*
|
A-0
|
| Corridors
|
(2)
|
|
C
|
B-0
|
B-0
|
B-0
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
B-0
|
|
|
A-0(b)
|
| Accommodation
spaces
|
(3)
|
|
|
C
|
B-0
|
B-0
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
C
|
|
|
|
A-0(b)
|
| Stairways
|
(4)
|
|
|
|
B-0
|
B-0
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
B-0
|
|
|
|
|
A-0(b)
|
A-0(b)
|
A-0(b)
|
| Service spaces (low risk)
|
(5)
|
|
|
|
|
C
|
A-60
|
A-0
|
A-0
|
A-0
|
*
|
B-0
|
| Machinery spaces of category A
|
(6)
|
|
|
|
|
|
*(a)
|
A-0(a)
|
A-60
|
A-60
|
*
|
A-0
|
| Other machinery spaces
|
(7)
|
|
|
|
|
|
|
A-0(a)(c)
|
A-0
|
A-0
|
*
|
A-0
|
| Hazardous areas
|
(8)
|
|
|
|
|
|
|
|
|
A-0
|
–
|
A-0
|
| Service spaces (high risk)
|
(9)
|
|
|
|
|
|
|
|
|
A-0(c)
|
*
|
A-0
|
| Open decks
|
(10)
|
|
|
|
|
|
|
|
|
|
–
|
*
|
| Sanitary and similar spaces
|
(11)
|
|
|
|
|
|
|
|
|
|
|
C
|
|
See notes under table 9-2.
|
Table 9-2 Fire integrity of decks
separating adjacent spaces
| Space below ↓
|
Space above →
|
(1)
|
(2)
|
(3)
|
(4)
|
(5)
|
(6)
|
(7)
|
(8)
|
(9)
|
(10)
|
(11)
|
| Control
stations
|
(1)
|
A-0
|
A-0
|
A-0
|
A-0
|
A-0
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
A-0
|
| Corridors
|
(2)
|
A-0
|
*
|
*
|
A-0
|
*
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
*
|
| Accommodation spaces
|
(3)
|
A-60
|
A-0
|
*
|
A-0
|
*
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
*
|
| Stairways
|
(4)
|
A-0
|
A-0
|
A-0
|
*
|
A-0
|
A-60
|
A-0
|
A-0(e)
|
A-0
|
*
|
A-0
|
| Service
spaces (low risk)
|
(5)
|
A-15
|
A-0
|
A-0
|
A-0
|
*
|
A-60
|
A-0
|
A-0
|
A-0
|
*
|
A-0
|
| Machinery
spaces of category A
|
(6)
|
A-60
|
A-60
|
A-60
|
A-60
|
A-60
|
*(a)
|
A-60
|
A-60
|
A-60
|
*
|
A-0
|
| Other
machinery spaces
|
(7)
|
A-15
|
A-0
|
A-0
|
A-0
|
A-0
|
A-0(a)
|
*(a)
|
A-0
|
A-0
|
*
|
A-0
|
| Hazardous areas
|
(8)
|
A-60(e)
|
A-0(e)
|
A-0(e)
|
A-0(e)
|
A-0
|
A-60
|
A-0
|
–
|
A-0
|
*
|
A-0
|
| Service
spaces (high risk)
|
(9)
|
A-60
|
A-0
|
A-0
|
A-0
|
A-0
|
A-60
|
A-0
|
A-0
|
A-0(c)
|
*
|
A-0
|
| Open
decks
|
(10)
|
*
|
*
|
*
|
*
|
*
|
*
|
*
|
–
|
*
|
–
|
*
|
| Sanitary
and similar spaces
|
(11)
|
A-0
|
A-0
|
*
|
A-0
|
*
|
A-0
|
A-0
|
A-0
|
A-0
|
*
|
*
|
|
Notes: to be applied to tables 9-1 and 9-2, as appropriate.
|
Note
(a) Where the space contains an emergency
power source or components of an emergency power source adjoining a
space containing a ship’s service generator or the components of a
ship’s service generator, the boundary bulkhead or deck between those
spaces should be an “A-60” class division.
Note
(b) For clarification as to which note
applies see paragraphs 9.3.3 and 9.3.5.
Note
(c) Where spaces are of the same
numerical category and superscript “c” appears, a bulkhead or deck of
the rating shown in the tables is only required when the adjacent
spaces are for a different purpose, e.g., in category (9). A galley
next to a galley does not require a bulkhead but a galley next to a
paint room requires an “A-0” bulkhead.
Note
(d) Bulkheads separating the navigating
bridge, chartroom and radio room from each other may be “B-0”
rating.
Note
(e) Additional provisions for fire
boundaries should be assessed in accordance with paragraph 9.3.1.
Where an asterisk appears in the tables, the division
should be of steel or equivalent material, but need not be of “A”
class standard. However, where a deck is penetrated for the passage of
electric cables, pipes and vent ducts, such penetrations should be
made tight to prevent the passage of flame and smoke.
|
9.2.6 Continuous “B” class ceilings or linings in
association with the relevant decks or bulkheads may be accepted as contributing wholly
or in part to the required insulation and integrity of a division.
9.2.7 In approving structural fire protection details, the
Administration should consider the risk of heat transmission at intersections and
terminal points of required thermal barriers. The insulation of a deck or bulkhead
should be carried past the penetration, intersection or terminal point for a distance of
at least 450 mm in the case of steel and aluminium structures. If a space is divided
with a deck or a bulkhead of “A” class standard having insulation of different values,
the insulation with the higher value should continue on the deck or bulkhead with the
insulation of the lesser value for a distance of at least 450 mm.
9.2.8 Windows and sidescuttles, with the exception of
navigating bridge windows, should be of the non-opening type. Navigating bridge windows
may be of the opening type provided the design of such windows permits rapid closure.
The Administration may permit windows and sidescuttles outside hazardous areas to be of
the opening type.
9.2.9 The fire resistance of doors should, as far as
practicable, be equivalent to that of the division in which they are fitted. External
doors in superstructures and deckhouses should be constructed to at least “A-0” class
standard and be self-closing, where practicable.
9.2.10 Self-closing doors in fire rated bulkheads should
not be fitted with hold-back hooks. However, hold-back arrangements incorporating remote
release fittings of the fail-safe type may be utilized.