HL Deb 20 October 2003 vol 653 cc155-6WA
Earl Attlee

asked Her Majesty's Government:

Whether the HW points machine is a safety critical component of a railway system; and [HL4837]

Who is the design authority for the HW points machine; and [HL4838]

Whether Network Rail maintains or has access to a complete and up-to-date set of engineering drawings of the HW points machine; and [HL4839]

Whether HW points machines are overhauled or refurbished; if so, by whom; and whether that organisation has:

  1. (a) a complete and up-to-date set of engineering drawings of the HW points machine; and
  2. (b) a schedule of limits and fits for the machine, covering all components that they inspect, reject, retain or repair. [HL4840]

Lord Davies of Oldham

Network Rail advises that all points machines are subject to a rigorous product acceptance process which forms part of its railway safety case. Meeting the appropriate acceptance criteria is a matter for the relevant suppliers.

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