2 (1) In these Regulations,
flammable liquid means any liquid with a flash point below 175°F, as determined by Tagliabue’s Open Cup Tester, and having a Reid vapour pressure not exceeding 40 psi absolute at 100°F or any liquid with a flash point of 175°F or above when it is heated by artificial means to a temperature not less than its flash point temperature; (liquide inflammable)
flash point is the minimum temperature of a flammable liquid in degrees Fahrenheit, as determined by Tagliabue’s Open Cup Tester in accordance with A.S.T.M. Test Method: D-1310-56T at which its vapours will form a flammable mixture with air; (point éclair)
vapour pressure is the ReidFootnote * pressure, measured in pounds per square inch absolute (psia) that is exerted by a volatile liquid at a given temperature. (tension de vapeur)
(2) For the purpose of these Regulations, flammable liquids are divided into three classes:
(a) Class I flammable liquids includes all flammable liquids, except crude petroleum, having flash points at or below 80°F; this Class also includes Class II flammable liquids when they are heated by artificial means to temperatures not less than their flash point temperatures;
(b) Class II flammable liquids includes all flammable liquids, except crude petroleum, having flash points above 80°F but below 175°F; this Class also includes liquids with flash points of 175°F or above when they are heated by artificial means to temperatures not less than their flash point temperatures;
25 Storage tanks equipped with heating coils, jackets or other heating devices shall be equipped with thermometers and suitable temperature regulators to ensure that the temperature of the contents is maintained within safe limits.