Water Supply Industry Interpretations and Advice

  • Area of Interest : Installation
  • Topic : Surge arrestor
  • Title : Deadlegs as surge arrestors
  • Clause Reference : Regulation 3 (2)
  • Reference Number : I18
  • Decision Date : September 2005

Any system identified as likely to suffer the effects of pressure surges shall be protected by a suitably sized surge arrestor or expansion vessel. It is not acceptable to create a dead leg to act as a surge arrestor.