An express passenger train comprising 12 coaches hauled by a Type 4 diesel-electric locomotive was approaching Tyesley North signalbox on the down main line at 60 to 65 mile/h when the bracket on the locomotive supporting part of the a.w.s. equipment became loose. The wheels of the rear bogie of the locomotive and of all 12 coaches derailed. Examination of the fractured bracket bolts confirmed that high stress fatigue failures had occurred in the four bolts. Use of maximum tightening torque of 758 lb-ft is essential to achieve the longest life under fatigue loading conditions. It was also recommended that the bracket design should be re-examined to see if longer bolts could be used.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1968-5-17

Media Info

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Filing Info

  • Accession Number: 00037470
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 13 1976 12:00AM