|
requirements for any fixed pressure water-spraying fire-extinguishing
system;
.3 water contaminated with petrol or other dangerous substances is
not drained to machinery spaces or other spaces where sources of ignition
may be present; and
.4 where the enclosed cargo space is protected by a carbon dioxide
fire-extinguishing system the deck scuppers are fitted with means to
prevent the escape of smothering gas."
The definition of "D" in paragraph 2.9 is replaced by the following:
"D is the moulded depth of the ship to the bulkhead deck (metres)
provided that, in a ship having an enclosed cargo space on the bulkhead
deck which is internally drained in accordance with the requirements of
paragraph 1.6.2 and which extends for the full length of the ship, D shall
be measured to the next deck above the bulkhead deck. Where the enclosedcargo spaces cover a lesser length, D shall be taken as the moulded depth
to the bulkhead deck plus lh/L where l and h are the aggregate length and
height respectively of the enclosed cargo spaces (metres)."
Regulation 23-1 The following new Regulation 23-1 is added after
Regulation 23: "Damage control in dry cargo ships (This Regulation
applies to ships constructed on or after 1 February 1992)
1 There shall be permanently exhibited or readily available on the
navigating bridge, for the guidance of the officer in charge of the ship,
a plan showing clearly for each deck and hold the boundaries of the
watertight compartments, the openings therein with the means of closure
and position of any controls thereof, and the arrangements for the
correction of any list due to flooding. In addition, booklets containingthe aforementioned information shall be made available to the officers of
the ship.
2 Indicators shall be provided for all sliding doors and for hinged
doors in watertight bulkheads. Indication showing whether the doors are
open or closed shall be given on the navigating bridge. In addition, shell
doors and other openings which, in the opinion of the Administration,
could lead to major flooding if left open or not properly secured, shallbe provided with such indicators.
3.1 General precautions shall consist of a listing of equipment,
conditions and operational procedures, considered by the Administration to
be necessary to maintain watertight integrity under normal ship
operations.
3.2 Specific precautions shall consist of a listing of elements (i.e.
closures, security of cargo, sounding of alarms, etc.) considered by theAdministration to be vital to the survival of the ship and its crew."
Regulation 42 Emergency sources of electrical power in passengerships
The following text is inserted after the heading:
"(Paragraphs 2.6.1 and 4.2 of this Regulation apply to ships
constructed on or after 1 February 1992)"
The second sentence in paragraph 2.6.1 is deleted.
The existing text of paragraph 4.2 is replaced by the following:
"4.2 Power to operate the watertight doors, as required by Regulation
15.7.3.3, but not necessarily all of them simultaneously, unless an
independent temporary source of stored energy is provided. Power to the
control, indication and alarm circuits as required by Regulation 15.7.2
for half an hour."
CHAPTER II-2 CONSTRUCTION-FIRE PROTECTION, FIRE DETECTION AND FIREEXTINCTION
Regulation 4 Fire pumps, fire mains, hydrants and hoses
The following text is inserted after the heading:
"(Paragraph 3.3.2.5 of this Regulation applies to ships constructed on
or after 1 February 1992)"
The existing text of paragraph 3.3.2.5 is replaced by the following:
"2.5 The total suction head and the net positive suction head of the
pump shall be such that requirements of paragraphs 3.3.2, 3.3.2.1, 3.3.2.2
and 4.2 of this Regulation shall be obtained under all conditions of list,
trim, roll and pitch likely to be encountered in service."
In paragraph 7.1 between "of" and "material" in the first line the
word "non-perishable" is inserted.
In paragraph 7.1, the following new sentence is inserted after the
first sentence:
"Fire hoses of non-perishable material shall be provided in ships
constructed on or after 1 February 1992, and on ships constructed before 1
February 1992 when the existing fire hoses are replaced."
Regulation 13-1 Sample extraction smoke detection systems
The following new Regulation 13-1 is added after Regulation 13:
"Sample extraction smoke detection systems (This Regulation applies to
ships constructed on or after 1 February 1992)
1 General requirements
1.1 Wherever in the text of this Regulation the word "system" appears,
it shall mean "sample extraction smoke detection system".
1.2 Any required system shall be capable of continuous operation at
all times except that systems operating on a sequential scanning principle
may be accepted, provided that the interval between scanning the same
position twice gives an overall response time to the satisfaction of theAdministration.
1.3 Power supplies necessary for the operation of the system shall be
monitored for loss of power. Any loss of power shall initiate a visual and
audible signal at the control panel and the navigating bridge which shall
be distinct from a signal indicating smoke detection.
1.4 An alternative power supply for the electrical equipment used in
the operation of the system shall be provided.
1.5 The control panel shall be located on the navigating bridge or in
the main fire control station.
1.6 The detection of smoke or other products of combustion shall
initiate a visual and audible signal at the control panel and the
navigating bridge.
1.7 Clear information shall be displayed on or adjacent to the control
panel designating the spaces covered.
1.8 The sampling pipe arrangements shall be such that the location of
the fire can be readily identified.
1.9 Suitable instructions and component spares shall be provided for
the testing and maintenance of the system.
1.10 The functioning of the system shall be periodically tested to the
satisfaction of the Administration. The system shall be of a type that can
be tested for correct operation and restored to normal surveillance
without the renewal of any component.
1.11 The system shall be designed, constructed and installed so as to
prevent the leakage of any toxic or flammable substances or
fire-extinguishing media into any accommodation and service space, control
station or machinery space.
2 Installation requirements
2.1 At least one smoke accumulator shall be located in every enclosed
space for which smoke detection is required. However, where a space is
designed to carry oil or refrigerated cargo alternatively with cargoes for
which a smoke sampling system is required, means may be provided to
isolate the smoke accumulators in such compartments for the system. Suchmeans shall be to the satisfaction of the Administration.
2.2 Smoke accumulators shall be located for optimum performance and
shall be spaced so that no part of the overhead deck area is more than 12
m measured horizontally from an accumulator. Where systems are used in
spaces which may be mechanically ventilated, the position of the smoke
accumulators shall be considered having regard to the effects of
ventilation.
2.3 Smoke accumulators shall be positioned where impact or physical
damage is unlikely to occur.
2.4 Not more than four accumulators shall be connected to each
sampling point.
2.5 Smoke accumulators from more than one enclosed space shall not be
connected to the same sampling point.
2.6 Sampling pipes shall be self-draining and suitably protected from
impact or damage from cargo working.
3 Design requirements
3.1 The system and equipment shall be suitably designed to withstand
supply voltage variations and transients, ambient temperature changes,
vibration, humidity, shock, impact and corrosion normally encountered inships and to avoid the possibility of ignition of flammable gas air
mixture.
3.2 The sensing unit shall be certified to operate before the smoke
density within the sensing chamber exceeds 6.65% obscuration per metre.
3.3 Duplicate sample extraction fans shall be provided. The fans shall
be of sufficient capacity to operate with the normal conditions or
ventilation in the protected area and shall give an overall response time
to the satisfaction of the Administration.
3.4 The control panel shall permit observation of smoke in the
individual sampling pipe.
3.5 Means shall be provided to monitor the airflow through the
sampling pipes so designed as to ensure that as far as practicable equalquantities are extracted from each interconnected accumulator.
3.6 Sampling pipes shall be a minimum of 12 mm internal diameter
except when used in conjunction with fixed gas fire-extinguishing systems
when the minimum size of pipe should be sufficient to permit the
fire-extinguishing gas to be discharged within the appropriate time.
3.7 Sampling pipes shall be provided with an arrangement for
periodically purging with compressed air."
Regulation 15 Arrangements for oil fuel, lubricating
oil and otherflammable oils
The following text is inserted after the heading:
"(Paragraphs 2.6 and 3 of this Regulation apply to ships constructed
on or after 1 February 1992)"
The existing text of paragraph 2.6 is replaced by the following:
".6 Safe and efficient means of ascertaining the amount of oil
fuel contained in any oil fuel tank shall be provided.
.6.1 Where sounding pipes are used, they shall not terminate in
any space where the risk of ignition of spillage from the sounding pipe
might arise. In particular, they shall not terminate in passenger or crew
spaces. As a general rule, they shall not terminate in machinery spaces.However, where the Administration considers that these latter requirements
are impracticable, it may permit termination of sounding pipes in
machinery spaces on condition that all the following requirements are met:
.6.1.1 in addition, an oil-level gauge is provided meeting the
requirements of subparagraph .6.2;
.6.1.2 the sounding pipes terminate in locations remote from
ignition hazards unless precautions are taken such as the fitting of
effective screens to prevent the oil fuel in the case of spillage through
the terminations of the sounding pipes from coming into contact with a
source of ignition;
.6.1.3 the termination of sounding pipes are fitted with
self-closing blanking devices and with a small-diameter self-closing
control cock located below the blanking device for the purpose of
ascertaining before the blanking device is opened that oil fuel is not
present. Provision shall be made so as to ensure that any spillage of oil
|
