What is the function of the safety valve installed on the return flow of the circulating cooling water?
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A safety valve is installed on the return flow of the circulating cooling water. What is its function? What parameter does the gauge PSV measure, and what is its function? Seeking advice
The safety valve is denoted by the code PSV; SV is the abbreviation for safety valve. This seems to be a heat exchanger. Overpressure may occur during the heat exchange process, so a safety valve is installed; it is best to consult the process engineers or check the control instructions
It’s useless; if it’s already installed, an application can be submitted to have it removed, and if it’s not installed, then there’s no need to install it.
There is a possibility of overpressure during the manufacturing process.
According to the \"Code for Design of Process Piping in Refining Units\" (SH/T 3122-2013), section 5.4, cut-off valves should not be installed on the inlet and outlet pipes for hot and cold streams in heat exchangers, nor on the inlet and outlet pipes for hot streams in coolers and condensers. On the inlet and outlet pipes of the heat exchange equipment that requires maintenance without shutting down during operation, shut-off valves, bypass lines, and bypass shut-off valves should be installed. A purging pipe should be placed downstream of the inlet shut-off valve, while a drain pipe should be installed upstream of the outlet shut-off valve ； When installing a shut-off valve could cause overpressure in the heat exchanger, pressure relief measures should be taken.
For circulating cooling water, it is recommended to install a flow interruption alarm; you can check out the information on flow interruption alarms on the homepage of this website: https://www.ayt.hk
This is still necessary; if there is no valve for the return water, it can be omitted. Risks are everywhere; after all, there is an extra layer of protection
Here, the safety valve is supposed to serve the purpose of overpressure protection, but it’s best to pay attention to the type of safety valve when installing it in order to prevent rust
Safety valves are very necessary; different perspectives lead to varying views. **There are clear regulations stating that such equipment must be equipped with safety valves. Some can be installed while others cannot.