Question regarding the safety valve of the heat exchanger
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For all the feed lines of the heat exchangers in the ethylene plant, the design institute has installed safety valves, and each line is equipped with two discharge paths – two safety valves in total? What is the reasoning behind this, to facilitate verification? Why must it be added in every case? If you know, please reply. Thank you
If it’s possible to switch between one in use and one standby, then there’s no need to design two safety valves, right?
Prevent the cold material outlet valve from closing due to the overpressure resulting from continuous heating. One in use and one as backup ensures protection even when calibrating the safety valve.
It might be because the safety valve needs to be inspected annually, so another safety valve is used while it is being inspected
This post was last edited by 1204045818 on 2019-4-11 08:04. I have encountered this situation before; although it is a safety valve on the pipeline, it actually serves to protect the heat exchanger. Adding a safety valve provides an extra layer of protection. Such protective measures are also available on boilers.