1, the safety valve should be installed upright and close to the protected equipment or pipeline. If not close to the arrangement, from the protected equipment or pipeline to the total pressure drop of pipeline safety valve entrance, should not exceed the safety valve set pressure value of 3%.
2, the safety valve should be set up and maintenance platform. Layout of the weight of safety valve safety valve after the demolition of lifting may, when necessary, set the boom.
3, when discharged vent Explorer or go to the flare header media with the condensate liquid or gas condensate, the safety valve outlet should be higher than the duct; otherwise, measures should be taken to drain.
4, the safety valve outlet pipe should be given back pressure does not exceed the safety valve set pressure of a certain value. For ordinary spring-loaded safety valve, the back pressure does not exceed the safety valve set pressure value of 10%.
5, safety valve entrance pipe should be long radius elbow.
6, when the safety valve import and export pipeline is provided with a cut-off valve, gate valve should be selected, and lead Fengkai, valve should be installed horizontally, in order to avoid corrosion or loose pin valve stem and valve plate connected, the valve plate down. When the safety valve with bypass valve, the valve should be sealed off.
The safety valve outlet pipe should be 7, into the closed system along 45 ° inclined in the direction of medium discharge duct at the top, in order to avoid condensate duct pour into the pipe, and can reduce the pressure of safety valve.
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