Safety distance for pneumatic test
Safety distance for pneumatic test
(OP)
Refer to the related thread,
Equivalent Energy
thread794-26767
I don't want to reply the dead thread. Therefore, I ask this question in new thread.
I got the proposal for pneumatic test with safety protection (barricade the area) around minimum distance of :-
+100 ft. for stored energy 27,134 kJ.
+150 ft. for stored energy over 27,134 kJ.
I cannot find the source of reference for above proposal. It's seem the safe practice from the contractor's experience.
Should we accept this idea? Please share your experience.
Equivalent Energy
thread794-26767
I don't want to reply the dead thread. Therefore, I ask this question in new thread.
I got the proposal for pneumatic test with safety protection (barricade the area) around minimum distance of :-
+100 ft. for stored energy 27,134 kJ.
+150 ft. for stored energy over 27,134 kJ.
I cannot find the source of reference for above proposal. It's seem the safe practice from the contractor's experience.
Should we accept this idea? Please share your experience.





RE: Safety distance for pneumatic test
E = {P.V/k-1} [1-{Patm/P}^k-1/k]
where
E = Energy Joules
P = Absolute pressure Pascals
V = Test Volume m^3
Patm = Atmospheric pressure pascals
k = Ratio of specific heat of air
TNTlb = E 4.8 x 10^-7
where
TNTlb = Equivalent TNT in pounds
SD = 15 (TNTlb)^0.5
where
SD = Safe distance meters
This compares reasonable well with your numbers. Not sure of the original source.
RE: Safety distance for pneumatic test