PTBITT
Mechanical
- Nov 18, 2022
- 2
I am trying to develop a WPS that would qualify the following base metals and thickness range using the SMAW process with low hydrogen rod.
P-No 1 - Group No 1, 2, 3 to P-No 1 - Gr No 1, 2, 3. With a thickness range of .216" to 2". Impact testing and PWHT will be required.
Would the following PQR's create a WPS that will cover all combinations of P1-Gr1, 2, 3 with a thickness range of .216” to 2”. Or would each combination (Gr.1-2, 1-3, 2-3) require a PQR with each wall thickness (.216”, .375’, 1”).
PQR 1 – P1-Gr1 to P1-Gr2. Wall thickness = .216”
PQR 2 – P1-Gr1 to P1-Gr3. Wall thickness = .375”
PQR 3 – P1-Gr2 to P1-Gr3. Wall thickness = 1”
P-No 1 - Group No 1, 2, 3 to P-No 1 - Gr No 1, 2, 3. With a thickness range of .216" to 2". Impact testing and PWHT will be required.
Would the following PQR's create a WPS that will cover all combinations of P1-Gr1, 2, 3 with a thickness range of .216” to 2”. Or would each combination (Gr.1-2, 1-3, 2-3) require a PQR with each wall thickness (.216”, .375’, 1”).
PQR 1 – P1-Gr1 to P1-Gr2. Wall thickness = .216”
PQR 2 – P1-Gr1 to P1-Gr3. Wall thickness = .375”
PQR 3 – P1-Gr2 to P1-Gr3. Wall thickness = 1”