Smoke tight divisions

1. Corridors and stairways serving cabin areas on class I yachts are to be divided from the cabins and from other areas by smoke-tight divisions. Smoke-tight doors are to be installed in stairways or in corridors to ensure that smoke from a fire anywhere on board the yacht is not transported to a corridor serving cabins.

2. Class II yachts are to comply with the requirements for class I yachts. Such yachts are in addition to have smoke-tight divisions enclosing each cabin. Bathrooms can in this context be consider as part of a cabin.

3. Class II yachts are also to be provided with a transversal smoke-tight division extending from keel to open deck and from shipside to shipside. This division is to divide the main accommodation in two parts, and should preferably be located amidships.

204. Fire-resisting divisions

1. Main load-carrying structures within major and moderate fire hazard areas are to be arranged to distribute load such that there will be no collapse of the construction of the hull and superstructure when it is exposed to fire during the appropriate fire protection time. The load-carrying structure is also to comply with the requirements of Par 2 and 3 below.

2. tIhf atthethsetrutecmtupreesrastpuerecifoiefdthine cPoarre 1doaerse nmotadreiseofmoarleumthinainum200al℃loy,abtohveeir thinestamllabtieont itsemtpoerabteuresuicnh accordance with the times given in 202. 1.

If the structures specified in Par 1 are made of combustible material, their installation is to be

3. such that their temperatures will not rise to a level where deterioration of the construction will oc-

cur during exposure to the composite standard fire test to such an extent that the load-carrying ca- pability, in accordance with the times given in 202. 1 will be impaired.

The construction of all doors, and door frames in fire-resisting divisions, with the means of secur-

4.

ing them when closed, is to provide resistance to fire as well as to the passage of smoke and flame equivalent to that of the bulkheads in which they are situated. Watertight doors of steel need

not be insulated. Where

a fire-resisting division is penetrated by pipes, ducts, controls, electrical ca-

bles or for other purposes, arrangements and necessary testing are to be made to ensure that fire-resisting integrity of the division is not impaired.

the

205. Restricted use of combustible materials

1. All vessels are to either comply with the requirements for control of combustible materials for accommodation as defined by this paragraph or have a automatic or manual type sprinkler system. Use of highly combustible materials, such as polyurethane foam is however to be avoided regardless of chosen design philosophy.

(1) Class I yachts are to comply with Par 2 to 11, except for open spaces, void spaces, fuel tank compartments, tanks and auxiliary machinery spaces having little or no fire risk.

(2) Class II yachts are to comply with Par 2 to 11. When following additional safety items or equivalent are provided, exemptions for open spaces, void spaces, fuel tank

compartments, tanks granted.

and auxiliary machinery spaces having little or no fire risk may be

(A) Early detection and fixed fire extinguishing systems for switchboards;

(B) 2 firefighter's outfits; and

(C) 5 additional portable fire extinguishers and a foam generator.

(3) FRP materials may be accepted for parts of the exhaust gas system on a case when it can be documented that this will not affect the safety of the yacht. The

by case basis documentation

is to address item such as risk of ignition, exhaust cooling system, redundancy in design, high

temperature sensors and penetration through fire resisting divisions.

2. All separating divisions, ceilings or linings if not a fire-resisting division, are to be of non-combus- tible or fire-restricting materials.

3. Where insulation is installed in areas in which it could come into contact with any flammable flu- ids or their vapours, its surface is to be impermeable to such flammable fluids or vapours. The ex- posed surfaces of vapour barriers and adhesives used in conjunction with insulation materials are to have low flame-spread characteristics.

4. Furniture and furnishings in public spaces and crew accommodation are to comply with the follow- ing standards:

(1) All case furniture is to be constructed of approved non-combustible or fire-restricting materials, except that a combustible veneer with a calorific value not exceeding 45 MJ m may be used

on the exposed surface of such articles;

(2) All other furniture such as chairs, sofas and tables are to be constructed with frames of non-combustible or fire-restricting materials;

(3) All draperies, curtains and other suspended textile materials are to be of approved materials and

have qualities of resistance to the propagation of flame.

(4) All upholstered furniture and all bedding components are to be of approved materials and have qualities of resistance to the ignition and propagation of flame.

(5) All deck finish materials are of approved materials.

5. The following surfaces are, as a minimum standard, to be constructed of materials having low flame- spread characteristics. These requirements are also applied to the windows in the relevant area.

(1) Exposed surfaces in corridors and stairway enclosures, and of bulkheads, wall and ceiling linings in all accommodation and service spaces and control stations,

(2) Concealed or inaccessible spaces in accommodation, service spaces and control stations.

Any thermal and acoustic insulation material, if not fire-resisting division or fire-resisting material,

6. is to be of non-combustible material.

Materials used in the yacht, when exposed to fire, are not to emit smoke or toxic gases in quanti-

7. ties that could be dangerous to humans.

Void compartments, where low density combustible materials are used to provide buoyancy, are to

8. be protected from adjacent fire hazard areas by fire-resisting divisions, in accordance with Table

7.1.1. Also, the space and its closures are to be gastight, but it is to be ventilated to atmosphere. These requirements do not apply to ships not engaged on international sea voyages.

In compartments where smoking is allowed, suitable non-combustible ash containers are to be

9. provided. In compartments where smoking is not allowed, adequate notices are to be displayed.

10. The exhaust gas pipes are to be arranged so that the risk of fire is kept to a minimum. To this effect, the exhaust system is to be insulated and all the compartments and structures which are contiguous with the exhaust system, or those which may be affected by increased temperatures caused by waste gases in normal operation or in an emergency, are to be constructed of non-com-

bustible material or be shielded and insulated with non-combustible material to protect temperatures.

11. The design and arrangement of the exhaust manifolds or pipes are to be such as to safe discharge of exhaust gases.

from high ensure the

206. Arrangement

All doors and hatches required to be either fire resistant or smoke-tight shall be self-closing or au- tomatically closing upon fire detection from any one detector. Doors to bathrooms inside cabins need not to comply with this requirement. Indication upon closure of doors and hatches is not re- quired for fire safety purposes.

207. Fuel and other flammable fluid tanks and systems

1. Tanks containing fuel and other flammable fluids are to be separated from accommodation and bag- gage compartments by suitably ventilated and drained vapour-proof enclosures or cofferdams.

2. Fblueelflouiildstaonfksaarfelasnhoptoitnot bneotlolceasstedthain o6r0℃conmtigauyoubse tloocmataejdorwfitrheinhaszuacrhd arreas. pHroovwideevder,thfelamtamnkas- are made of steel or other equivalent material.

Every oil fuel pipe which, if damaged, would allow oil to escape from a storage, settling or daily

3. service tank is to be fitted with a cock or valve directly on the tank capable of being closed from

a position outside the space concerned in the event of a fire occurring in the space in which such tanks are situated.

Pipes, valves and couplings conveying flammable fluids are to be of steel or such alternative mate-

4. rial permitted by the Society, in respect of strength and fire integrity having regard to the service

pressure and the spaces in which they are installed. Wherever practicable, the use of flexible pipes is to be avoided.

Pipes, valves and couplings conveying flammable fluids are to be arranged as far from hot surfaces

5. or air intakes of engine installations, electrical appliances and other potential sources of ignition as

is practicable and be located or shielded so that the likelihood of fluid leakage coming into contact with such sources of ignition is kept to a minimum.

Fuel with a flashpoint below 35℃ is not to be used. In every yacht in which fuel with a flash-

6. point below 43℃ is used, the arrangements for the storage, distribution and utilization of the fuel are to be such that, having regard to the hazard of fire and explosion which the use of such fuel

may entail, the safety of the yacht and of persons on board is preserved. In addition to the re-

quirements of Pars 1 to 5, the arrangements are to comply with the following:

(1) Tanks for the storage of such fuel are to be located outside any machinery space and at a dis- tance of not less than 760 mm inboard from the shell side and bottom plating, and from decks

and bulkheads,

(2) Arrangements are to be made to prevent overpressure in any fuel tank or in any part of the oil fuel system, including the filling pipes. Any relief valves and air or overflow pipes are to dis- charge to a safe position,

(3) The spaces in which fuel tanks are located are to be mechanically ventilated using exhaust fans providing not less than six air changes per hour. The fans are to be such as to avoid the possi- bility of ignition of flammable gas air mixtures. Suitable wire mesh guards are to be fitted over inlet and outlet ventilation openings. The outlets for such exhausts are to be discharged to a

safe position. 'No Smoking' signs are to be posted at the entrances to such spaces,

(4) Earthed electrical distribution systems are not to be used, with the exception of earthed intrinsi- cally safe circuits,

(5) Suitable certified safe type electrical equipment is to be used in all spaces where fuel leakage could occur, including ventilation system. Only electrical equipment and fittings essential for op- erational purposes are to be fitted in such spaces.

208. Means of escape

1. All spaces or combination of spaces exceeding 25 m are to be provided with at least two independent escape routes.

2. The primary escape way is to be provided by corridors, stairways and other spaces independent of the space considered, all with a minimum free opening of 700 mm in all directions. The secondary means of escape can be provided by a permanent ladder and hatch arrangement with a free opening of minimum 500 mm in all directions. Doors and hatches not capable of being unlocked from both sides are not to be regarded as an escape way.

209. Openings in fire-resisting divisions

1. Except for the hatches between cargo, store, and baggage spaces and between such spaces and the weather decks, all openings are to be provided with permanently attached means of closing which are to be at least as effective for resisting fires as the divisions in which they are fitted.

2. It is to be possible for each door to be opened and closed from each side of the bulkhead by one person only.

3. Fire doors bounding major fire hazard areas and stairway enclosures are to satisfy the following requirements.

(1) The doors are to be self-closing and be capable of closing with an angle of inclination of up to 3.5° opposing closure, and are to have an approximately uniform rate of closure of no more than 40 seconds and no less than 10 seconds with the yacht in the upright position. The ap-

(2)

proximate uniform rate of closure for sliding fire doors is to be of no more than 0.2

m s

no less than 0.1 m s with the yacht in the upright position.

Remote-controlled sliding or power-operated doors are to be equipped with an alarm

and

that and

(3)

(4)

(5)

(6)

(7)

(8)

(9)

continue sounding until the door is completely closed. Doors designed to reopen upon contact-

ing an object in their paths are to reopen sufficiently to allow a clear passage of at least 0.75 All doors are to be capable of remote and automatic release from a continuously manned cen- tral control station, either simultaneously or in groups, and also individually from a position at both sides of the door. Indication is to be provided at the fire control panel in the con- tinuously manned control station whether each of the remote-controlled doors is closed. The re- lease mechanism is to be so designed that the door will automatically close in the event of disruption of the control system or central power supply. Release switches are to have an on-off function to prevent automatic resetting of the system. Hold-back hooks not subject to control station release are to be prohibited.

Local power accumulators for power-operated doors are to be provided in the immediate vi- cinity of the doors to enable the doors to be operated at least 10 times (fully opened and closed) using the local controls.

Double-leaf doors equipped with a latch necessary to their fire integrity are to have a latch

that is automatically activated by the operation of the doors when released by the system. Doors giving direct access to special category spaces which are power-operated and automati- cally closed need not be equipped with alarms and remote-release mechanisms required (2) and

(3) above.

A door closed remotely from the continuously manned control station is to be capable of being re-opened at both sides of the door by local control. After such local opening, the door is au- tomatically to close again.

Disruption at one door of the control system or main source of electric power is not to impair the safe functioning of the other doors.

The components of the local control system is to be accessible for maintenance and adjusting.

(10) Power operated doors are to be provided with a control system of an approved type which is

to be able to operate in case of fire, this being determined in accordance with the Fire Test Procedures Code. This system is to satisfy the following requirements:

(A) the control system is to be able to operate at a temperature of at least 200℃ for at least

60 min, served by the power supply;

(B) the power supply for all other doors not subject to fire is to not impaired; and

(C) at temperatures exceeding 200℃ the control system is to be automatically isolated from the power supply and shall be capable of keeping the door closed up to at least 945℃.

4. The requirements for integrity of fire-resisting divisions of the outer boundaries facing open spaces of a yacht are not to apply to glass partitions, windows and side scuttles. Similarly, the require- ments for integrity of fire-resisting divisions facing open spaces are not to apply to exterior doors in superstructures and deckhouses.

5. Doors in smoke-tight divisions are to be self-closing. Doors which are normally kept open are to close automatically or by remote control from a continuously manned control station.