1
Q
Vacuum Box - Normal vacuum required when vacuum testing
A
3 - 5 psig
2
Q
Pressure Test - Pressure used when air testing the shell-to- bottom weld
A
15 psig
3
Q
Pressure Test - Pressure used when air testing a repad
A
15 psig
4
Q
Scope - Maximum internal pressure for tanks in API 620
A
15 psig
5
Q
Scope - Maximum internal pressure for tanks in API 650 & 653
A
2.5 psig
