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The dmv admits carelessness with heat distortion

Last year, the Swedish railway network of 266 detected or suspected heat distortion, according to an analysis from the Swedish transport administration. ”The outcome is extremely large. The number of heat distortion has been increased on all types of tracks,” writes the agency.

In many cases, will return to the same heat distortion year after year, which according to the report, because they are not repaired in the right way. Heat distortion in Hallsberg, sweden, Linköping, Södertälje port and the Tapiola mentioned as an example.

the metal in the rails are expanded by the heat and the tracks can't resist tryckkrafterna that occurs, then it increases the risk of derailment.

According to the report, is because most of the solkurvorna on too little ballast, which holds the track in place, or too much rails, and does not occur on tracks that are built and maintained according to the rules.

"With this background, it is clear that many of our regulations are not complied with in practice", the report said.

in Order to reduce the problems, the authority has developed an action plan, which, among other things, included that the follow-up to the repair of the heat distortion is done according to the rules.

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