Dear Brother
-- We have facing problem at Hydro test , Pressure Drop same time Temperature also Drop , Now our client asking Drop calculation according to temperature drop
We are Doing Holding time for 1 Hour at our project , Due to welded joints are full painted
4" Line sch -120
Start Hydro test :
Test pressure =29.4 Bar
Temperature=35.1C
After 1 Hour
End of Hydro test :
Test pressure =27.4 Bar
Temperature =33.5C
I have know Temp drop will be equal to pressure Drop , Now My question how we can drive formula and shows that above hydro test accepted
Borthers , I need pressure change for a change in test water temperature Calculation if any one can drive formula and send me or you have any excel formula please share in our group
Best regards
Sankar.k
Welding Inspector
Iraq
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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