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Article: Intelligent bolt 'could have saved lives': for just [Pounds Sterling]12 Potters Bar points could have been fitted with bolt tension indicator, but Railtrack and HSE drag heels. (News: Rail Safety).
- Article from:
- The Engineer
- Article date:
- May 24, 2002
- Author:
CopyrightCOPYRIGHT 2002 Centaur Communications Limited. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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FOLLOWING OUR exclusive revelations last week that existing technology could have avoided the Potters Bar tragedy, comes news that a bolt that cannot be loosened by train vibration could have been fitted to the points outside the station for just [pounds sterling]12, its makers said this week.
RotaBolt technology, which is already used in the rail industry in Australia, converts existing bolts by installing an indicator that allows it to be tightened to the correct tension.
As the bolt is tightened, a stainless steel cap on the top spins until the bolt has reached the correct tension.
Frictional grip
The bolt is designed to achieve a ...