Setting at the safety valve outlet
Thread Content
There are several pumps for feeding the catalyst at the site; the safety valves are connected to the inlet pipes of these pumps, and the outlet sections have been reduced to a smaller diameter so as to connect with the inlet pipes. Is this installation appropriate?
The installation method is inappropriate. It can be installed by speaking directly to the supervisor.
Not suitable, as it causes issues with the back pressure and discharge of the safety valve
Is it because the outlet connection piping cannot interfere with the proper operation of the safety valve?
Wasn’t it designed by a design institute? Such unauthorized process changes must be avoided; should such changes lead to an accident, those responsible will have to bear legal consequences, and now there is a lifetime liability requirement.
It is necessary to check the pressure at the pump inlet in order to calculate the back pressure for the safety valve; spring-loaded safety valves have requirements regarding back pressure, which must not exceed 10 percent of the set pressure. The specific requirements and calculation formulas can be found in the Petrochemical Plant Design Manual.
The back pressure at the outlet has been affected
According to the safety valve installation specifications, this is not appropriate
Positive displacement pump, overpressure back to inlet?
Check the design documents, or the change documents