Section 7.7 - Requirements for fixed
fire-extinguishing systems not required by 7.7 of the
CodeWhere a fixed
fire-extinguishing system not required by 7.7 of the Code is
installed, it should meet the requirements of this section.
Section 7.7.1 - Control
stations not normally occupied Control stations not
normally occupied (e.g. emergency generator rooms) need not be
provided with manually operated call points.
Section 7.7.1.1.4 - Definition of
sectionA section is a group of fire
detectors and manually operated call points as displayed at the
indicating unit(s) required by this paragraph.
Section 7.7.1.1.9 - Extension of
detector sectionsThe same section of
detectors may serve spaces on more than one deck if such spaces
are located in the fore or aft end of the craft or they are so
arranged that they constitute common spaces on different decks
(e.g. fan rooms, galleys, public spaces, etc.)
Section 7.7.1.1.10 - Restriction of
loopsFor fire detection systems
with remotely and individually identifiable fire detectors, the
requirement set out in this section is considered met when a
loop covering accommodation spaces, service spaces and control
stations does not include machinery spaces of a major fire
hazard.
Section
7.7.1.1.14 - Acceptable activating arrangementsThe following arrangement
may be acceptable:
.1 to activate a paging system;
.2 to activate the fan stops;
.3 to activate the closure of fire
doors;
.4 to activate the closure of
fire and smoke dampers; and
.5 to
activate the sprinkler system.
Section 7.7.1.1.15 -
Installation of loops and definitions1 A loop should not
pass through a space twice. Where this is not practical (e.g.
for large public spaces), the part of the loop which by
necessity passes through the space for a second time should be
installed at the maximum possible distance from the other parts
of the loop.
2
Definitions:
.1 Loop: electrical circuit linking
detectors of various sections in a sequence and connected (input
and output) to the indicating unit(s).
.2 Zone address identification
capability: a system with individually identifiable fire
detectors.
Section 7.7.1.2.3 - Location of detectorsDistances smaller than 0.5 m
from bulkheads may be accepted in corridors, lockers and
stairways.
Section 7.7.3
- Remote control of the systemThe system should be
remotely controlled in such a way that it is fully serviceable
from the operating compartment without any intervention of
personnel outside that space in normal conditions.
Section 7.7.3.2.3 -
Construction of pipelines passing through accommodationPipelines may pass through
accommodation spaces, provided they are of substantial thickness
and their tightness is verified with a pressure test, after
their installation, at a pressure head not less than 5 N/mm2. In
addition, pipelines passing through accommodation areas should
only be joined by welding and should not be fitted with drains
or other openings within such spaces. Pipelines should not pass
through refrigerated spaces.
Section 7.7.3.2.5 - Location of closing devicesOpenings that may admit air
to, or allow gas to escape from, a protected space should be
capable of being closed from outside the protected space.
Section 7.7.3.2.6 -
Consideration of volume of air receivers when calculating
the quantity of extinguishing mediumThe volume of starting air
receivers converted to free air volume should be added to the
gross volume of the machinery space when calculating the
necessary quantity of extinguishing medium. Alternatively, a
discharge pipe connected to a safety valve may be fitted,
provided it leads directly to the open air.
Section 7.7.3.2.7 - Warning of
release of extinguishing medium to ro-ro spaces and other
spaces where personnel can enter1 Ro-ro spaces and other spaces where personnel can
be expected to enter and where the access is facilitated by
doors or hatches should be provided with an automatic warning
for the release of the extinguishing medium.
2 The pre-discharge alarm should
be automatically activated (e.g. by opening of the release
cabinet door).
3
Reference is made to the Code on Alarms and Indicators, 1995
(resolution A.830(19)).
Section 7.7.3.2.10 - Separation of
spacesTwo spaces can be considered
as separated spaces where divisions comply with tables 7.4-1 and
7.4- 2, as appropriate, or the divisions are of steel
construction.
Section
7.7.3.2.12 - Means for checking the quantity of medium in
containers1 Means for checking
the quantity of medium in containers should be so arranged that
it is not necessary to move the containers completely from their
fixing position. This may be achieved for instance by providing
hanging bars above each bottle row for a weighing device or by
using suitable surface indicators.
2 Surface indicators containing
radioactive material should be of a type accepted by the
Administration.
Section
7.7.3.2.14 - Location, accessibility, use and ventilation of
CO2 - storage spaces1 Spaces for storage
of the cylinders or tanks for extinguishing gas should not be
used for other purposes. Access to these spaces should be
possible from the open deck; spaces situated below the deck
should be directly accessible by a stairway or ladder from the
open deck. The space should be located no more than one deck
below the open deck.
2 Spaces where the entrance from the open deck is
not provided, or which are located below deck, should be fitted
with mechanical ventilation. The exhaust duct (suction) should
lead to the bottom of the space. Such spaces should be
ventilated with at least 6 air changes per hour.
Section 7.7.4 - Portable
fire extinguishersReference should be made to
resolution A.602(15) on Revised Guidelines for marine portable
fire extinguishers.
Section 7.7.4 - Mass and capacity of portable fire
extinguishers1 The mass of
portable fire extinguishers should not exceed 23 kg.
2 Each powder or
carbon dioxide extinguisher should have a capacity of at least 5
kg and each foam extinguisher a capacity of at least 9 litres.
Section 7.7.4 -
Equivalents of portable fire extinguishersReference is made to ISO
7165:1999 - Fire protection equipment - Portable fire
extinguishers - Performance and construction.
Section 7.7.4 - Examination and
testing of portable fire extinguishers1 Fire extinguishers
should be examined annually by a competent person.
2 Each fire
extinguisher should be provided with a sign indicating that it
has been examined.
3
Fire extinguisher cylinders and propellant bottles should be
hydraulic pressure tested every 10 years.
Section 7.7.4 - Type and location of
portable fire extinguishers1 Carbon dioxide fire
extinguishers should not be placed in accommodation spaces. In
control stations and other spaces containing electrical or
electronic equipment or appliances necessary for the safety of
the craft, fire extinguishers should be provided with
extinguishing media which are neither electrically conductive
nor harmful to the equipment and appliances.
2 Fire extinguishers should be
ready for use and located in easily visible places such that
they can be reached quickly and easily at any time in the event
of a fire. In addition, the fire extinguisher should be located
such that their serviceability is not impaired by the weather,
vibration or other external factors. Portable fire extinguishers
should be provided with devices to identify whether they have
been used.
Section
7.7.5.1 - Independently driven pumpsIndependently driven pumps
are pumps powered by independent sources of power.
Section 7.7.5.3 -
Drainage of fire mains and shutting off fire main
branchesFire mains should be capable
of being drained. Valves should be installed in the main so that
fire main branches can be isolated when the main is used for
purposes other than fire-fighting.
Section 7.7.5.4 - Location of hydrantsOne hydrant should be
located in the vicinity and outside of each entrance to a
machinery space.
Section
7.7.5.5 - Length of fire hosesFire hoses should have a
length of:
.1 at least 10 m;
.2 not more than 15 m in machinery
spaces; and
.3 not
more than 20 m for other spaces and open decks.
Section
7.7.5.5 - Additional hoses and nozzles when carrying
dangerous goodsShips carrying dangerous
goods should be provided with 3 additional hoses and 3
additional nozzles.