The safety valve has a front handwheel but no rear handwheel; for those safety valves whose outlet leads to a flare system, can they be taken offline for testing?
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It is used with flammable and explosive media, and the safety valve has only a front hand valve, no back hand valve. It leads directly to the flare stack behind the valve – can this safety valve be taken out of service?
Ask the person in charge of verification.:D
The main goal is to take the safety valve offline for calibration. Let’s see if anyone has a better way.
Close the upstream valve, remove the safety valve, and then plug the pipe leading to the flare with a blind flange
No, it does not meet the requirements for safe maintenance. It can cause leaks of flammable gases or toxic gases!