Minimum test pressure
Minimum test pressure
(OP)
Hi All
For a clad vessel with low liquid head, MAP & MAWP difference is very small. This vessel is to be hydro tested per UG-99C (horizontal position) and shall meet future hydro test requirement (in vertical position) per UG-99b. Calculated shop test pressure per UG-99C came out to be less than field hydro test pressure. How do we ensure that hydro test to meets the minimum requirement of UG-99(b) when the test pressure basis was set to UG-99 C? Thanks
For a clad vessel with low liquid head, MAP & MAWP difference is very small. This vessel is to be hydro tested per UG-99C (horizontal position) and shall meet future hydro test requirement (in vertical position) per UG-99b. Calculated shop test pressure per UG-99C came out to be less than field hydro test pressure. How do we ensure that hydro test to meets the minimum requirement of UG-99(b) when the test pressure basis was set to UG-99 C? Thanks





RE: Minimum test pressure
I am not sure how the field vertical at mawp could be higher than shop horizontal at map could be higher
RE: Minimum test pressure
RE: Minimum test pressure
Compress does not like a second hydro condition so you have to copy the file and run it with full liquid which should lower mawp signifigantly