Flammable Liquids Bulk Storage Regulations — 2
2 (1) In these Regulations, boil-over is a term used to describe the action that occurs when a hot layer of crude petroleum or similar liquid comes into contact with an underlying layer of a more volatile liquid and causes that liquid to flash into vapour; the expansion produced by the conversion of the entrapped liquid vapour results in a violent surface action; ( débordement ) crude petroleum is a flammable liquid with a flash point below 150°F and consisting of an unrefined mixture of natural liquid hydrocarbons as obtained from the earth; ( pétrole brut ) 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 ) flame arrestor is a device consisting of a group of parallel metal plates, tubes, fins or screens or a similar device with a large surface area for heat dissipation, which is designed to prevent the entrance of flame into a storage tank through a vent or similar opening; ( pare-flammes ) 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 ) installation means an installation of stationary bulk storage facilities for flammable liquids located on the railway right-of-way; ( installation ) main track is a track extending through yards and between stations where trains are operated by timetable, train order, block signals, or some other approved method of control; ( voie principale ) owning or operating company means the person or company owning or operating the installation; ( compagnie propriétaire or exploitante ) private track is a track outside of the carrier’s right-of-way, yard and terminals reserved exclusively for only one owner or lessee; ( voie particulière ) shall is used to indicate mandatory provisions; ( le futur ) should is used to indicate recommendatory; ( le conditionnel ) station means any location where passenger trains may stop in accordance with the current railway timetable; ( gare ) team track or business track is a track on railway right-of-way used by more than one company or person; ( voie de desserte industrielle or voie commerciale ) vapour pressure is the Reid * pressure, measured in pounds per square inch absolute (psia) that is exerted by a volatile liquid at a given temperature. ( tension de vapeur ) * NOTE: Standard Method of Test for Vapour Pressure of Petroleum Products (Reid Method — A.S.T.M. d 323 latest revision.) (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; (c) Class III flammable liquids includes crude petroleum and any other flammable liquid with similar boil-over characteristics having a flash point below 150°F; and (d) flammable liquids with a Reid vapour pressure of 40 psi or greater at 100°F are classed as compressed gases.