Flammable Liquids Bulk Storage Regulations (C.R.C., c. 1148)

42 (1) Except as provided in subsection (2), a warehouse, pumphouse, or other similar building used for storing or handling flammable liquids and structures attached thereto shall be constructed of non-combustible materials and unless otherwise authorized by the Commission shall not be more than one storey in height.

(2) Notwithstanding subsection (1), buildings with a floor area not exceeding 2,000 square feet may have a wooden frame. The roof structure may be constructed of any material, provided it has a fire resistance rating of at least two hours.

(3) The exposed wall of a building used for storing or handling flammable liquids, if located less than 10 feet from any property line which has been or may be built upon, shall be of blank masonry construction with a fire resistance rating of at least four hours.

(4) Below ground rooms, basements or pits are prohibited under any building that contains flammable liquids or is located within 50 feet of a Class I flammable liquid storage tank exceeding 1,500 Imperial gallons capacity.

(5) Warehouses, pumphouses and all other enclosures where flammable liquids are stored or handled shall be adequately ventilated with permanently open louvers located near floor level. It is recommended that the louvered ventilation area be at least one square foot per 50 square feet of floor space and be equally divided between opposite walls. If natural ventilation is not effective, then mechanical ventilation should be provided.

(6) Containers or drums used for the storage or measuring of flammable liquids, whether filled, partly filled or empty, shall not be stored in the pumphouse.

(7) If it is necessary to heat warehouses or any other building or enclosure where flammable liquids are stored or handled, the heat shall be supplied by low pressure steam, hot water, or other enclosed heat transfer media, and the heating source shall be located as prescribed in subsections (8) and (9).

(8) Except as provided in subsection (9), a building housing any heat source shall be constructed as prescribed in this section and shall be located not less than 10 feet and as much more as is practicable, from any storage tank, loading or unloading rack or terminal or any building or enclosure containing flammable liquids.

(9) An office attached to a warehouse or other building where flammable liquids are stored or handled may be heated by Class I, Division I, Group D electric heaters if the office is separated from the warehouse or other building by a blank wall with a fire resistance rating of at least two hours.