![]() ![]() Subsequently, TC adopted in the Augregulations the classification as used in the United States. TC did attempt to have a special classification for anhydrous ammonia of Class 2.4 accepted at the United Nations, and within North America, but was unsuccessful. Indeed, under the Augregulations Transport Canada will accept the UN classification for shipments within Canada. ![]() With respect to the classification of anhydrous ammonia, TC agrees that the UN classification of Class 2.3 (8) is an appropriate one. However, TC will be writing to all fire departments in Canada with respect to certain items in the Augregulations to ensure all fire departments are aware of new provisions and at that time will reconfirm that anhydrous ammonia must be treated as toxic and that in special circumstances anhydrous ammonia can burn. The Department is not aware of any instances in which the placard was the sole source of information for a rail tank car containing anhydrous ammonia.The name "ANHYDROUS AMMONIA" appearing on the side of the tank car is more useful in identifying the product.Further, given the response identified in the North American Emergency Response Guidebook (copies provided free of charge to each fire department and police department in Canada), Transport Canada's (TC) view is that the full information system, including the placard used, effectively provides information to responders. It is also observed that on the train consist (now required under the AugTransportation of Dangerous Goods Regulations) and on a shipping document the contents of the rail tank car would be shown to be anhydrous ammonia, either by the UN Name or the UN Number. ![]() Third, a placard must be visible on both sides and also on both ends to indicate the class assigned to anhydrous ammonia.Second, the words "Inhalation Hazard" or "Inhalation Hazard/Dangereux à inhaler" must appear in letters at least 100 mm high on each side of the tank.First, the words "ANHYDROUS AMMONIA" must appear in letters at least 100 mm high on each side of the tank.With respect to safety marks, there are three sources of information which must be visible on the tank car: The recommendation arises from a derailment involving three tank cars of anhydrous ammonia. The Department of Transport review the classification and safety marks for anhydrous ammonia to ensure that it is in a class and division consistent with the risks it poses to the public. M304-41-21, Mile 202.98, Bala Subdivision - Near Britt, Ontario - 23 September 1999 (R02-01)(R02-02)Ĭlassification of Anhydrous Ammonia - (Action Required, as presented in the TSB Report) R99T0256 - Derailment - Canadian National Freight Train No. ![]()
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