The issue of the fire resistance performance of control valves
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What is the fire protection performance of instrument control valves? How is it implemented structurally?
Check the relevant standards and specifications to follow the clues”
If you don’t start a fire, there won’t be a fire; lightning starting a fire isn’t your fault, no matter what happens~~~~~,{:2_32:}
For fire and static electricity protection, it’s generally necessary to raise the manual valves; automatic control valves and shut-off valves are basically standard accessories
SHT3005-2016 \"Code for Selection and Design of Automation Instruments in Petrochemical Industries\" 10.1.1.5 When the process requires fire protection features for control valves, fire-safe control valves that comply with API 607 or API 6FA standards should be selected. API is the American Petroleum Institute standard. API 607 is the classification of valve fire resistance ratings ； API 6FA is the standard for fire testing of valves. API 607 specifies fire protection ratings for valves based on the distance at which a fire occurs, with these ratings varying depending on that distance ； API 6FA is like placing the valve over a fire: the valve is installed at both ends of the pipeline and opened fully to check for leaks (external leaks) during heating and cooling ； One end of the valve is attached to the pipeline; when it is fully closed, leaks during heating and cooling (internal leaks) can be detected.
For fire protection of actuators, a fire shield can be used
In accordance with the requirements of SH/T3005-2016, both pneumatic and electric actuators for valves must be equipped with fire shields that meet the UL1709 standard, ensuring that the actuators do not fail within 30 minutes under conditions of a fire involving hydrocarbons at 1093°C. The typical failure temperature of actuators is 70-80°C.