Heysham 2 Nuclear Power Station



Existing bellows sealed globe valves on CO²/oxygen systems have interlocking systems that were unreliable.
Initially, we were contacted by NNC (now Amec) to advise the best solution.
It is impossible to fit interlocking devices to bellows sealed valves, and guarantee that when locked the valve is properly closed.


To change to top entry ball valves, but of a quality and material certification that is much higher than available with standard ball valve product.


An order has now been placed with Heap & Partners for replacement valves, which will give the required performance and much more reliable interlocking systems.

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