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Question 120 April 2002

Monitoring block valves in plant isolation procedures

We are enhancing our process plant isolation procedures and
are looking to address situations where the vent from a double block and
bleed cannot readily be routed to a safe place. We are considering enhancing
integrity tests on the block valves and monitoring for any pressure
rise in the space between valves


The following 4 companies answered this question:

  • PGS Production Services
  • Phillips Petroleum
  • Rolls-Royce
  • Northumbrian Water Ltd

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