In the paper manufacturing we provide (2) air systems from the same compressing station. Referred to as essential & non-essential. Paper has very large equipment that requires a controlled shutdown and these critical pieces are fed from the essential side, all else from the other.
Weak outside wall. Point the end at the wall. Assure no cafeteria, meeting room is along axis. Its not Code as I'm aware, just good engineering practice.
If Flammable vapors are present normally ID1, If Flammable vapors are present abnormally (ie) by accident ID2. Vapors are probably heavier than air (confirm) then ventilation in at top out at bottom (sp gr based). Ribboms on vents confirm air movement.
Most sites I've worked (within one company) had test benches we used for non-code/non-UV testing. One site I gained the ability to adjustment within spring range of all UV valves from the State Inspector.
If test sites were not close we required VR test data accompany the valve, for legal...
What I have seen in the industry I work is 6" and above require a warm-up bypass. Think .. that steam is warming that line on start-up, in a cold start-up near 100% goes to condensate ... can your traps handle this? NO, once the line is partially filled your moving water at steam velocities...
Raise the pump to a level above the dike wall. Seen many pumps in flammable service inside the dike, use a pump pad equal or greater to the dike wall, this being "temporary" be creative.
Use bonding/grounding (when you say portable, it echos flex hose).
No Kv is 86.5% of Cv, 100% Cv is the maximum the valve will pass, we used to size for valve operation around 70%, now the norm is more like 40% requiring much larger safeties (if) the control valve is the limiting basis.
