Safety valve setting----heat exchange tube rupture
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I have a question for fellow users: for a shell-and-tube heat exchanger, when should one consider the scenario of rupture of the heat exchange tubes? In books related to safety valves, it is stated that if the design pressure on the low-pressure side of a heat exchanger is less than 2/3 of the design pressure on the high-pressure side, it should be taken into consideration as part of the design conditions ? We currently have a shell-and-tube heat exchanger for LNG vaporization. Normally, we install a safety valve on the LNG side; if tube rupture is a concern, then two safety valves would need to be installed on the same unit. Is this acceptable? Are there such applications in actual engineering?
It only needs to be installed on the low-pressure side. Is a shell-and-tube heat exchanger needed for LNG vaporization? It’s so strange.