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Addressing Safety Valve Opening Times with Partial Stroke Tests

Posted in Final Control Element, Safety on Tuesday, September 21st, 2010. No comments yet
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A question came into the ISA’s Safety email list concerning the use of valve positioners in partial stroke tests for valves used in safety shutdown applications. The person asking the question wrote: I was informed that PST using positioner such as the Fisher/Emerson has got problem when first opening the valve because the CV value […]