Installed at the outlet of the liquid-phase expansion valve for the pipelines in the liquefied petroleum gas tank farm
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\"Code for Process Design of Safety Pressure Relief Systems in Petrochemical Plants\" SH/T 3241-2025: 5.1.1 Various liquids should not be discharged directly into the plant’s overall gas safety pressure relief system. 5.1.4 The flammable or toxic liquids discharged by the thermal expansion safety valve should, following a safety analysis, be released into relevant systems that have a gas phase space. It turns out that from the outlet of the safety valve in the spherical tank area, there are pipes leading to the inlet of the spherical tank as well as pipes leading to the flare for venting. Does this regulation pertain to the gas phase balance line or to the venting pipes?
We had an accident once; the pipeline safety valve activated, and because it wasn’t detected in time, both the flare water seal tank and the liquid separation tank became completely full