guggemos
Member
- Location
- Richmond, California
Do small valves 2" and below get a free pass? I say NO …
Somebody on the job smarter than me says:
"Per API 500 Section 9.1.5, Areas surrounding small valves do not need to be classified since the definition of small valves is not provided by API. Valves 2" and smaller are considered small valves, except for Hydrogen service, where only valves smaller than 2" are considered small because of the increased hazard associated with Group B materials."
I think it always depends on the environment, the product and ignition source regardless of the piping size. What say you?
Somebody on the job smarter than me says:
"Per API 500 Section 9.1.5, Areas surrounding small valves do not need to be classified since the definition of small valves is not provided by API. Valves 2" and smaller are considered small valves, except for Hydrogen service, where only valves smaller than 2" are considered small because of the increased hazard associated with Group B materials."
I think it always depends on the environment, the product and ignition source regardless of the piping size. What say you?