blowdown forces

huangyhg

blowdown forces
i am in the oil & natural gas pipeline industry.  i am currently designing the foundations for pipelines that could have a blowdown force of up to 30k.  (by the way a "blowdown force" is the force from a pressure relief valve that has been set off for various reasons...just in case you needed to know.) my question is how should i treat the "blowdown force" ie. earthquake load, impact, etc.?  keep in mind this force is a short term load but due to the size of the pressure valve and the operating pressure, the  blowdown forces are large enough to consider for design.  if you have any literature, references, links please let me know.
thanks
steam blowdown is common in coal/oil fired electric power stations. if your situation is anything similar, suggest that you treat it as an impact force (with the appropriate safety factor). a steam blow looks and sounds like a jet engine that has gone from "nothing" to full throttle in the blink of an eye.