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API standards relating to instrumentation in Oil and Gas Industry
- Thread starter sabap
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The old RP 550 was obsoleted and is in the process of being replaced by RP553 for control valves, RP-554 for control systems, RP 556 for fired heaters (still in progress) and I can't remember the flow RP number which also may be a work in progress.
API 554 and API 555 relate to sampling and analytical instruments.
JMW
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JMW
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