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The DOT-117 (TC-117 in Canada) is a type of unpressurized
The DOT-117 (TC-117 in Canada) is a type of unpressurized tank car
A tank car ( International Union of Railways (UIC): tank wagon) is a type of railroad car (UIC: railway car) or rolling stock designed to transport liquid and gaseous commodities.
History
Timeline
The following major events occurred in ...
in use on North American railroads. The DOT-117 design was developed in the aftermath of the Lac-Mégantic rail disaster
The Lac-Mégantic rail disaster occurred in the town of Lac-Mégantic, Quebec, Canada, on July 6, 2013, at approximately 01:15 EDT, when an unattended 73-car Montreal, Maine and Atlantic Railway (MMA) freight train carrying Bakken Formation c ...
of 2013 in an effort to upgrade the specifications of the then-common DOT-111 and CPC-1232 designs. It was announced on May 1, 2015 by the United States Federal Railroad Administration
The Federal Railroad Administration (FRA) is an agency in the United States Department of Transportation (DOT). The agency was created by the Department of Transportation Act of 1966. The purpose of the FRA is to promulgate and enforce rail saf ...
(FRA) and Canada's Transport Canada
Transport Canada (french: Transports Canada) is the department within the Government of Canada responsible for developing regulations, policies and services of road, rail, marine and air transportation in Canada. It is part of the Transporta ...
(TC). The specifications require that the tank shells be constructed out of steel, with 11-gauge () sheet metal jackets, thick head shields on the ends of the tanks, and improved valves over previous designs.
In order to implement the DOT-117 standard, the FRA and TC required that all new tank cars constructed after October 1, 2015 be built to the specification. The agencies also imposed a retrofit schedule to bring in-service cars up to DOT-117 standards. Depending on the volatility of the cargo carried, DOT-111 and CPC-1232 cars would be banned in certain services in a series of cut-off dates, with all such cars out of service or rebuilt by May 1, 2025.
See also
*Title 49 of the Code of Federal Regulations
A title is one or more words used before or after a person's name, in certain contexts. It may signify either generation, an official position, or a professional or academic qualification. In some languages, titles may be inserted between the f ...
References
{{Reflist Rolling stock of Canada Rolling stock of the United States