(1) General. – Every room used or intended to be used for spraying, or otherwise applying cellulose or other flammable paints or lacquers or other volatile flammable liquids (hereinafter referred to as a spray-room) shall be constructed in accordance with the requirements of this section.

(2) No such room shall be used for any purpose other than for such spraying.

(3) The walls, floor and ceiling-roof assembly of every spray-room shall be constructed of non-combustible materials, and have a fire-resistance rating of not less than two hours.

(4) Such walls, floor and ceiling-roof assembly shall be vapour-tight.

(5) The windows in a spray-room shall be non-opening fire-windows having a fire-resistance rating of not less than half an hour.

(6) The doorways and doors, whether internal or external, to a spray-room shall comply with the following requirements—

a) there shall be not less than two doorways, which shall be separated by as great a distance as is practicable, and in any case by not less than half the length of the room;

b) every doorway which is 1,1 metres or less in width shall be fitted with a swinging door opening outwards;

c) every doorway which is more than 1,1 metres but not more than 2,4 metres in width shall be fitted with a sliding door;

d) every doorway which is more than 2,4 metres in width shall be fitted with a roller-shutter:

Provided that any doorway which is more than 3 metres in height shall be fitted with an approved automatic roller-shutter, irrespective of its width;

e) every such swinging or sliding door shall be an approved self-closing fire-door having a fire-resistance rating of not less than one hour, and shall have an observation panel of not less than 300 millimetres square and of not more than 600 millimetres square, of clear wire-woven glazing having a fire-resistance rating of at least half an hour;

f) every such door and shutter shall be kept closed at all times, except at such times as the door concerned is being used for the ingress or egress of goods or persons.

(7) No artificial illumination, other than electric lights, shall be used in a spray-room.

(8) All electrical fittings and apparatus in such room, or forming part of a ventilation system thereof, shall be flameproof and vapourproof, and all wiring thereto shall be through seamless, screwed, metal conduit, and shall be effectively bonded to earth.

(9) Fuses for electrical lighting and apparatus shall be located outside such room.

(10) Any artificial heating for a spray-room shall be by means of steam or hot water.

(11) Any boiler used to generate heat for this purpose shall be located outside such room.

(12) Ventilation. – Every spray-room shall have an effectual mechanical ventilation system which will extract the fumes from such room and discharge them in such manner that they do not create a public nuisance.

(13) Wherever practicable, such system shall take the form of an extraction-fan situated in an external wall of such room and discharging direct to the open air without the intermediary of a duct.

(14) Where this is impracticable, any extraction duct provided shall be of metal, shall be as short as possible, shall have no sharp bends and shall be taken through an external wall without passing through any other part of the building in which the spray-room is located.

(15) All fans shall be readily accessible, and ducts, if any, shall be fitted with doors for cleaning.

(16) Inlets for fresh air shall be provided, and shall be located not less than 2,1 metres above floor-level.

(17) The ventilating system for a spray-room shall be capable of providing a complete change of air in such room at least 30 times per hour.

(18) Notwithstanding the provisions of sub-section (17), where separate booths or similar enclosures exist within such room, it shall be permissible to provide not less than 30 complete air changes per hour only to each such booth or enclosure, if the spray-room, as a whole, is provided with extract ventilation at the rate of not less than 0,6 cubic metre of air per minute per square metre of floor area of such room.

(19) Not more than two such booths or enclosures shall be connected to a common fan or common exhaust-duct.

(20) If more than one fan is connected to a particular duct, the controls to such fans shall be so interconnected that one fan cannot be operated without simultaneously operating all fans connected to such duct.

(21) Except in the case of booths or similar enclosures, the inlets to extraction-fans or extraction-ducts shall be located not more than 450 millimetres above the floor-level of the spray-room.

(22) Signs. – Every door and roller0-shutter in a spray-room shall be marked on both sides of such door or shutter in block letters of not less than 50 millimetres in height, stating: “THIS DOORE”, or “THIS SHUTTER”, as the case may be, “TO BE KEPT CLOSED WHEN SPRAYING IS IN PROGRESS” and shall at all ties be maintained in a legible condition.

(23) At least one notice in block letters of not less than 150 millimetres in height, stating: “NO SMOKING”, shall be painted on a wall of every spray-room and shall at all times be maintained in a legible condition.

(24) Hand fire-extinguishers. – Every spray-room shall be provided with an approved number of hand fire-extinguishers.