Anhydrous Ammonia Bulk Storage Regulations (C.R.C., c. 1146)

Regulations are current to 2017-11-20 and last amended on 2015-06-18. Previous Versions

  •  (1) The distances prescribed in this section shall be measured from the nearest point on the tank shell to the nearest point of the building, property line, etc.

  • (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.

  • (3) For a tank with a water capacity of 2,000 Imperial gallons or less, the distance from any location on another property which may be built upon shall be not less than 25 feet.

  • (4) If the storage tank is part of a water treatment system, the distance from a source of drinking water is not prescribed.

  • (5) A storage tank with a water capacity exceeding 2,000 Imperial gallons shall be at least 300 feet from any station, office building or other similar place of public assembly on railway property.

  • (6) It is recommended that the distance of storage tanks with water capacities exceeding 2,000 Imperial gallons from schools, hospitals, theatres, residential areas or other similar places of public assembly be not less than 300 feet.

  • (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.

  • (9) For a tank with a water capacity of 2,000 Imperial gallons or less, the distance from any of the buildings mentioned under subsection (8) shall not be less than 25 feet.

  • (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.

  • (13) The clear distance between two anhydrous ammonia storage tanks with an individual water capacity exceeding 2,000 Imperial gallons shall not be less than five feet.

  • (14) The clear distance between a tank containing anhydrous ammonia and a tank containing a flammable liquid shall not be less than 20 feet, except that installations with a storage capacity exceeding 150,000 Imperial gallons of water measured at 60°F shall be located not less than 100 feet from the above ground storage of flammable liquids.

  • (15) An anhydrous ammonia storage tank shall not be located within a diked area containing a flammable liquid storage tank.

  • (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.

  •  (1) The distances prescribed in this section shall be measured from the gauge side of the nearest rail of the nearest adjacent track not serving the installation or the main track, as the case may be, to the centre line of the unloading or loading tracks.

  • (2) The unloading or loading tracks at the loading or unloading site shall be at least 50 feet from the main track.

  • (3) The unloading or loading tracks shall be at least 20 feet from the nearest adjacent track not serving the installation, and if the nearest adjacent track is a main track, the distance shall be 50 feet.

  •  (1) That portion of loading or unloading racks or other structures over four feet high shall be at least six feet from the gauge side of the nearest rail of the loading or unloading track. That portion of the structure four feet or less in height shall be at least three feet 7¾ inches from the gauge side of the nearest rail of the loading or unloading track, except for non-standard gauge track in the Province of Newfoundland where this clearance distance shall be at least three feet 10 inches. When the track is curved, the clearance distance shall be increased one inch per degree of track curvature.

  • (2) Loading and unloading terminals or structures of an overall height that is less than four feet shall be located at least six feet from the gauge side of the nearest rail of the loading or unloading track.

  •  (1) The distances prescribed in this section shall be measured from the loading or unloading point to the nearest point of the building or property line, as the case may be.

  • (2) The loading or unloading racks or points shall be at least 150 feet from any station, office building or other similar place of public assembly on railway property.

  • (3) It is recommended that the distance of loading or unloading racks from schools, hospitals, theatres, residential areas, or other similar places of public assembly be not less than 150 feet.

  • (4) Except as provided in subsection (5), the loading or unloading racks or points shall not be less than 75 feet from engine houses, rail shops, grain elevators, or other similar buildings.

  • (5) The distance of loading or unloading racks from a tank or building used exclusively by the owning or operating company shall not be less than 10 feet.

  •  (1) Pumphouses or compressor houses and outdoor pumps or compressors driven by non-explosion proof motors or internal combustion engines shall be located not less than 10 feet from any storage tank, loading or unloading point, or building.

  • (2) The distance requirement of subsection (1) does not apply to outdoor pumps or compressors driven by explosion proof motors marked or labelled Class I, Division I, Group D and wired in accordance with the Canadian Electrical Code for Class I, Division I, Group D locations.

  • (3) The distance of pumphouses or compressor houses and outdoor pumps or compressors from any location on another property which may be built upon shall not be less than 25 feet.

 The distance between a tank truck and a tank or tank car during loading or unloading operations shall not be less than 10 feet measured between the nearest points on the two tank shells.

PART IIIStorage Tanks

 A cylinder or tank with a water capacity not exceeding 100 Imperial gallons and manufactured, filled, operated and maintained in accordance with a Canadian Transport Commission or an Interstate Commerce Commission specification, which is approved by either of these authorities for anhydrous ammonia, is exempt from sections 22 to 28 and all sections of Part V.

  •  (1) The water capacity (measured at 60°F) of any unrefrigerated anhydrous ammonia storage tank located on carrier’s right-of-way shall not exceed 25,000 Imperial gallons.

  • (2) The aggregate water capacity of tanks assembled in one group shall not exceed 150,000 Imperial gallons and groups of tanks shall be segregated as prescribed in subsection 15(16).

  •  (1) Unrefrigerated tanks shall be constructed in accordance with the 1956, 1959 or 1962 issues of the A.S.M.E. Boiler and Pressure Vessel Code for Unfired Pressure Vessels to a design working pressure not less than 250 psig and a safety factor of not less than four.

  • (2) The tank design shall be approved by the Pressure Vessel Inspection Branch of the province concerned.

  • (3) Tank design drawings and specifications shall be in accordance with the requirements of Canadian Standards Association Pamphlet B-51 (1957).

  • (4) Refrigerated tanks shall be designed in accordance with the directions of subsection (1) to a minimum design working pressure of 60 psig.

  • (5) Containers exceeding 36 inches in diameter or 200 Imperial gallons water capacity shall be stress relieved after fabrication in accordance with the Code, or cold-formed heads, when used, shall be stress relieved, or hot-formed heads shall be used.

  • (6) Welding to any parts of a tank subject to internal pressure shall be in accordance with the Code under which the tank was fabricated; non-Code welding is permitted only on saddle  plates, lugs or brackets attached to the container by the tank manufacturer.

  •  (1) All tanks shall be inspected and tested prior to being put into use at the pressure specified by the A.S.M.E. Code by a qualified unfired pressure vessel inspector in accordance with the applicable regulations of the Province concerned.

  • (2) A copy of the tank test and inspection report shall be filed with the Commission.

 The tank shall be permanently marked or labelled as required by the A.S.M.E. Code under which the tank was manufactured and the Pressure Vessel Inspection Branch of the provincial government concerned.

 Each above-ground tank with a water capacity exceeding 1,000 Imperial gallons shall be electrically grounded for protection against lightning with the resistance to ground being as low as possible and preferably not in excess of six ohms.

 Each tank with a water capacity exceeding 2,000 Imperial gallons shall be equipped with a suitable pressure gauge graduated from 0 to 400 psi.

 
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