7. Sufficient manual fire alarm stations are to be installed throughout the accommodation spaces, service spaces and control stations. One manually operated call point is to be located at each exit. Manually operated call points are to be readily accessible in the corridors of each deck such that no part of the corridor is more than 20 m from a manually operated call point. Measures are to be taken to prevent inadvertent operation of the manual call alarm system.

309. Flammable gas detection and alarm system

1. A fixed automatic gas detection and alarm system is to be provided to monitor continuously all en- closed areas of the unit in which an accumulation of flammable gas may be expected to occur and capable of indicating at the main control point by aural and visual means the presence and location of an accumulation.

2. At least two portable gas monitoring devices are to be provided, each capable of accurately meas- uring a concentration of flammable gas.

310. Fire-fighters’ outfits

1. At least two fire-fighters’ outfits complying with the relevant requirements of the FSS Code are to be provided, each with portable instruments for measuring oxygen and flammable vapour concen- trations acceptable to the Society.

2. Two spare charges are to be provided for each required breathing apparatus. Units that are equip- ped with suitably located means for fully recharging the air cylinders free from contamination need carry only one spare charge for each required apparatus.

3. The fire-fighters’ outfits are to be kept ready for use in an easily accessible location that is perma- nently and clearly marked and, where more than one fire-fighter's outfit or more than one set of personal equipment is carried, they are to be stored in widely separated positions.

311. Recharging of air cylinders

1. The apparatus for recharging air cylinders, if provided, is to have its power supplied from the emergency supply or be independently diesel-powered, or be so constructed or equipped that the air cylinders may be used immediately after recharging.

2. The apparatus is to be suitably located in a sheltered space above main deck level on the unit.

3. Intakes for air compressors is to draw from a source of clean air.

4. The air is to be filtered after compression to eliminate compressor oil

5. The recharging capacity is to be accordance with Pt 8, Ch 3, Classification of Steel Ships.

contamination.

409. 2 of Rules for the

312. Arrangements in machinery and working spaces

1. Means are to be provided for stopping ventilating fans serving machinery and working spaces and for closing all doorways, ventilators, annular spaces around funnels and other openings to such spaces. These means are to be capable of being operated from outside such spaces in case of fire.

2. Machinery driving forced and induced draught fans, electric motor pressurization fans, oil fuel trans- fer pumps, oil fuel unit pumps and other similar fuel pumps are to be fitted with remote controls situated outside the space concerned so that they may be stopped in the event of a fire arising in the space in which they are located.

3. Every oil fuel suction pipe from a storage, settling or daily service tank situated above the double bottom is to be fitted with a cock or valve capable of being closed from outside the space con- cerned in the event of a fire arising in the space in which such tanks are situated. In the special case of deep tanks situated in any shaft or pipe tunnel, valves on the tanks are to be fitted but control in the event of fire may be effected by means of an additional valve on the pipeline or lines outside the tunnel or tunnels.