3.6.2.

(1) Except as permitted by Sentences (2), (8), (9) and (10), fuel-fired appliances shall be installed in service rooms separated from the remainder of the building by fire separations having a fire-resistance rating not less than 1 h.

(2) Except as required by Sentence (3), a fuel-fired appliance that serves only one room or suite is not required to be installed in a service room separated from the remainder of the building.

(3) A solid fuel fired appliance shall not be located in a repair garage, a storage garage, or any other location where it could be exposed to flammable vapours or gases unless,

(a) it is enclosed in a service room that is separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h,

(b) it is supplied with combustion air directly from outside the building, and

(c) the heat that it generates is supplied indirectly to the space served by means of ducts or piping.

(4) A service room containing an incinerator shall be separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 2 h.

(5) Equipment that uses a liquid having a flash point below 93.3°C shall be installed in a service room separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h.

(6) Electrical equipment that is required to be located in a service room by a regulation made under the Electricity Act, 1998, shall be installed in a service room separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h.

(7) Except as permitted by Sentence (8), in a storey that is not sprinklered, a service room that contains service equipment other than that addressed by Sentences (1) to (6), shall be separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h.

(8) If a service room referred to in Sentence (7) contains a limited quantity of service equipment, and the service equipment neither constitutes a fire hazard nor is essential to the operation of fire safety systems in the building, the requirements for a fire separation shall not apply.

(9) A fire separation is not required between a fireplace and the space it serves.

(10) A fire separation is not required between a roof-top appliance and the building it serves.

(11) The fire separation provisions for a fuel-fired appliance in a portable classroom shall conform to Article 3.9.3.7.

(1) A service room containing service equipment subject to possible explosion, such as boilers operating in excess of 100 kPa (gauge) and some types of refrigerating machinery and transformers, shall not be located directly under a required exit.

(1) A service room containing space heating, space cooling and service water heating appliances is permitted to contain other service equipment such as electrical service equipment.

(1) A service room containing an incinerator shall not contain other fuel-fired appliances.

(1) Except as required by Sentence 3.6.3.3.(9), a room for the storage of combustible refuse shall be,

(a) separated from the remainder of the building by a fire separation with a fire-resistance rating not less than 1 h, and

(b) sprinklered.

(1) A swing-type door from a service room containing a boiler or incinerator shall swing outward from the room, except that the door shall swing inward if the door opens onto a corridor or any room used for an assembly occupancy.

(1) Where an electrical equipment vault is required by a regulation made under the Electricity Act, 1998, the electrical equipment vault shall be totally enclosed by a fire separation of solid masonry or concrete construction having a fire-resistance rating of not less than 3 h if the vault is not provided with an automatic fire extinguishing system and not less than 2 h if the vault is so protected.

(2) Where a building is required to be sprinklered, the electrical equipment vault described in Sentence (1) need not be sprinklered provided,

(a) the vault is designed for no purpose other than to contain the electrical equipment, and

(b) a smoke detector is provided in the vault that will actuate the building fire alarm system in the event of a fire in the vault.

(3) A vault, that is part of a building and houses electrical equipment indoors, shall have,

(a) roofs or ceilings consisting of reinforced concrete of adequate strength for the conditions and not less than 150 mm thick, and

(b) floors consisting of reinforced concrete of adequate strength for the conditions and not less than 150 mm thick, except that floors that are at excavation level are permitted to be of reinforced concrete not less than 100 mm thick.

(4) Walls, roofs or ceilings, and floors shall be adequately anchored together in a manner designed to resist dislodgement by explosion.

(5) Only pipes or ducts necessary for fire protection or the proper operation of the electrical installation shall penetrate the fire separations surrounding the electrical equipment vault.

(6) A ventilation duct or opening, that penetrates the fire separation to the outdoors, need not be protected by a closure at the penetration.

(7) Each door to an electrical equipment vault shall be provided with a substantial lock or padlock.

(8) Explosion-relief devices and vents or other protective measures shall be provided for every electrical equipment vault containing dielectric liquid filled electrical equipment in conformance with Sentence 3.3.1.19.(2).

(9) Every electrical equipment vault shall be provided with a ventilation system designed in conformance with Part 6 to prevent the ambient temperature in the vault from exceeding 40°C.

(10) Where the vault ventilation system in Sentence (9) is directly from an outdoor area by natural ventilation without the use of ducts, and where the electrical equipment is the principal source of heat, the combined net area of inlet and outlet openings shall be not less than 0.002 m²/kVa of electrical equipment capacity with a minimum of 0.093 m², except that,

(a) where equipment in the power class as described in CAN3-C88, “Power Transformers and Reactors” is installed, ventilation requirements are permitted to be based on the actual full-load losses, or

(b) where the equipment is installed for emergency purposes only and is not normally energized, it need not be considered in determining the ventilation requirements.

(11) In the vault ventilation system in Sentence (10), the inlet for fresh air shall lead from an outdoor area and shall terminate at a point not more than 1 000 mm above the floor level of the vault.

(12) Where the vault ventilation system in Sentence (9) is a mechanical system, it shall be separate from the system for the remainder of the building and shall be designed so that,

(a) the vault temperature is thermostatically controlled,

(b) the fan is located so that it may be serviced without danger to personnel,

(c) a high temperature alarm is provided in the vault,

(d) the system is automatically shut off in the event of a fire in the vault, and

(e) a filter is provided in the air inlet if there is a possibility of dirt being drawn in.

(13) All ventilation openings shall be protected in conformance with Sentences 6.2.3.12.(3) and (4) and the protection shall be installed in such a manner that it cannot be removed from the outside by the use of common tools and it is tamperproof.

(14) Except as permitted in Sentence (15), the floor of the electrical equipment vault described in Sentences (1) and (2) shall be liquid tight and surrounded by liquid tight walls and sills of sufficient height to confine within the vault all of the liquid from the largest item of electrical equipment, but to a height of not less than 100 mm.

(15) The floor of the electrical equipment vault described in Sentences (1) and (2) may be provided with a floor drain connected to a covered sump capable of holding all of the liquid from the largest item of electrical equipment, and the connection shall have a noncombustible trap to prevent the spread of fire from the vault to the sump.

(1) A generator to supply emergency power for lighting, fire safety and life safety systems shall be located in a room that,

(a) is separated from the remainder of the building by a fire separation with a fire-resistance rating not less than ,

(i) 2 h for buildings within the scope of Subsection 3.2.6.v1, and

(ii) 1h for other buildings, and

(b) contains only the generating set and equipment that is related to the emergency power supply system.

(1) In a Group B, Division 2 or 3 occupancy, a room for the storage of oxygen containers shall be,

(a) separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h,

(b) designed for the storage of oxygen containers only,

(c) vapour tight,

(d) lined with noncombustible finish,

(e) separately exhausted to the exterior, and

(f) equipped with racks to store the containers.