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  1. Anhydrous Ammonia Bulk Storage Regulations - C.R.C., c. 1146 (Section 15)
    Regulations Respecting the Design, Location, Construction, Operation and Maintenance of Stationary Bulk Storage Facilities for Anhydrous Ammonia

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    • (2) A storage tank with a water capacity exceeding 2,000 Imperial gallons shall be not less than 50 feet from any location on another property which may be built upon or from a source of drinking water such as a reservoir, well or spring.

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    • (7) Except as provided in subsection (10), the distance of a tank with a water capacity of 2,000 Imperial gallons or less from any of the buildings mentioned in subsections (5) and (6) shall not be less than 50 feet.

    • (8) Except as provided in subsection (10), a storage tank with a water capacity exceeding 2,000 Imperial gallons shall not be less than 150 feet from engine houses, railway shops, grain elevators or other similar buildings.

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    • (10) Except as provided in subsection (12), the distance of a storage tank with a water capacity exceeding 100 Imperial gallons from any building on the installation site which is used exclusively by the company owning or operating the installation shall not be less than 10 feet.

    • (11) A tank with a water capacity of 100 Imperial gallons or less shall not be less than five feet horizontally from a building opening located at the same level as the tank vent or within five feet above the vent.

    • (12) When the construction or occupancy of the buildings referred to in subsection (10) is of such a nature as to constitute a hazard to the storage area, the distance between a building and the closest tank with a water capacity exceeding 100 Imperial gallons shall not be less than 50 feet.

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    • (16) The distance between any tank of one group and any tank of another group as defined in section 22 shall not be less than 25 feet.


  2. Anhydrous Ammonia Bulk Storage Regulations - C.R.C., c. 1146 (Section 42)
    Regulations Respecting the Design, Location, Construction, Operation and Maintenance of Stationary Bulk Storage Facilities for Anhydrous Ammonia

    • 42 (1) Except as provided in subsection (4), all openings in unrefrigerated containers, except those for safety relief valves and those connections protected by an opening not larger than a No. 54 drill size (0.0550 inch), shall be equipped with excess flow valves or other suitable automatic valve or device which will automatically prevent loss of the tank contents in the event of a connection or line failure.

    • (2) Connections on refrigerated containers shall be protected with excess flow valves or other devices as prescribed in the current edition of Agricultural Ammonia Institute pamphlet, Standards for the Storage and Handling of Anhydrous Ammonia.

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    • (4) An excess flow valve or other automatic device as prescribed in subsection (1) is not required for withdrawal connections of unrefrigerated tanks with a water capacity not exceeding 1,500 Imperial gallons, if the connection is protected by a controlling orifice not exceeding 5/16 inch diameter for vapour withdrawal and 1/8 inch diameter for liquid withdrawal, a manually operated shut-off valve, and a pressure-reducing regulator, all of which shall be assembled to the connection as prescribed in 2.2(d), Division II of the 1958 edition of National Fire Protection Association pamphlet No. 58.

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    • (6) Excess flow valves or other automatic devices, as referred to in subsection (1), shall be installed in  such a manner that rupture of the line or connection will not adversely affect the protective device.


  3. Anhydrous Ammonia Bulk Storage Regulations - C.R.C., c. 1146 (Section 74)
    Regulations Respecting the Design, Location, Construction, Operation and Maintenance of Stationary Bulk Storage Facilities for Anhydrous Ammonia

    74 The principal hazards associated with the handling of anhydrous ammonia are as follows:

    • (a) mixtures of air and anhydrous ammonia consisting of 16 to 25 per cent by volume of anhydrous ammonia are flammable and may ignite at a temperature as low as 1204°F in the presence of iron. For outdoor installations, this condition is not likely to be obtained except as a result of a tank or pipeline rupture. However, serious fires and explosions have occurred in which anhydrous ammonia was a contributing factor. Anhydrous ammonia becomes slightly unstable at 840-930°F and dissociates into hydrogen and nitrogen. The presence of small quantities of oil or other combustible material in anhydrous ammonia will increase the fire hazard;


  4. Anhydrous Ammonia Bulk Storage Regulations - C.R.C., c. 1146 (SCHEDULE : Temporary Transfer Facilities)
    Regulations Respecting the Design, Location, Construction, Operation and Maintenance of Stationary Bulk Storage Facilities for Anhydrous Ammonia

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    • 2 (1) The prerequisites for obtaining permission to transfer anhydrous ammonia between a tank car and a vessel other than a permanently-installed storage tank are as follows:

      • (a) except as provided in subparagraphs (i) to (iii), the direct transfer of anhydrous ammonia between a tank car and a vessel other than a permanently-installed storage tank shall comply in all respects with the requirements of these Regulations,

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        • (iii) notwithstanding the application requirements of Part I of these Regulations, drawings need not accompany applications requesting approval for periods that do not exceed six months if in addition to providing the information requested in paragraphs (b) and (c), the following information is also provided:

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          • (C) the application shall bear a signed and dated statement reading as follows:

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  5. Anhydrous Ammonia Bulk Storage Regulations - C.R.C., c. 1146 (Section 62)
    Regulations Respecting the Design, Location, Construction, Operation and Maintenance of Stationary Bulk Storage Facilities for Anhydrous Ammonia

    62 The loading or unloading of tank cars located on a carrier’s track are subject to the following conditions:

    • (a) except as provided in paragraph (d), tank car liquid discharge connections shall be equipped with excess flow valves;

    • (b) except as provided in section 61, lading shall be piped directly to permanent storage tanks of sufficient capacity to receive the entire contents of the tank car. The tanks and all of the facilities associated with them shall be in accordance with all applicable provisions of these Regulations;

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    • (d) tank cars of the I.C.C. 106A type may be loaded or unloaded on carrier’s track if written permission is obtained from the carrier concerned, and equipment is provided for the safe unloading or loading of the unit tanks, but such tanks shall not be stored on carrier’s property except as provided in these Regulations.


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