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Clarifications on cut-off valves for liquefied hydrocarbon storage tanks

2022-05-24View Original

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The \"Code for Selection and Design of Emergency Shut-off Valves for Liquefied Hydrocarbon Spheres\" (Sinopec Document No. 518) stipulates that \"no other pipe fittings or valves shall be installed between the emergency shut-off valve and the sphere’s pipe outlet, except for the connecting pipes.\" I wonder if everyone knows what the purpose of this rule is? How to repair a shut-off valve failure in the absence of valves?

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