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Boiler safety issues

Discussie in 'Steam Traction' gestart door marshall5, 9 jun 2021.

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  1. 5944

    5944 Resident of Nat Pres

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    Beroep:
    Train Maintainer for GTR at Hornsey
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    Letchworth
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    No I do not currently volunteer
    I'd say Peter was correct in his description. A boiler isn't secured to the frames at the firebox end, it's merely restrained from vertical movement. Though if the forces are high enough, it'll easily break the castings or fixings holding it down.
     
    5944, 6 apr 2022
    #61
    torgormaig vindt dit leuk.
  2. LMS2968

    LMS2968 Part of the furniture

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    Generally, a firebox crown collapse exerts a vertical force on the boiler via a down-force through - and blowing out - the firebars and ashpan. The vertical restraint provided by the firebox slide mounting usually isn't sufficient to resist this and the firebox end of the boiler is propelled upwards out of the frames. The restraining force exists though, and many engines which suffered a crown collapse derailed due to the up-force before the boiler's departure. There are several illustrations in C.H. Hewison's 'Locomotive Boiler Explosions' (1983) David & Charles ISBN 0 7153 8305 and in the 'Trains in Trouble' series.
     
    LMS2968, 6 apr 2022
    #62
    Bluenosejohn vindt dit leuk.
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