see my answer here below in red
Joseph Faustin Mbe
QA/QC Engineer
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De : Ahmed Husain <ahmraha@yahoo.com>
À : "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Envoyé le : Dimanche 23 juin 2013 17h00
Objet : [MW:18005] WPS with multiple PQR
Dear All,
Followings are brief details of five PQRs.
PQR No. Process Base metal B.M. Thick B.M. RANGE PWHT Impact
#1 SMAW P1Gr3 to P1Gr3 0.24 Thk 1.6 -12 N/A
#2 SMAW P1GR3-P1GR2 0.24 Thk 1.6 -12 N/A YES (-51 F)
#3 SMAW P1Gr3 to P1Gr3 1.5 THK 16 - 200 1150/10 HRS YES (-51 F)
#4 SMAW P1GR3-P1GR2 1.5 THK 16 - 200 1150/08 HRS ES (-60 F)
#5 SMAW P1Gr3 to P1Gr3 1.75 THK 16 - 200 N/A YES (-51 F)
Based on above PQRs,
1. Is it acceptable to prepare a single WPS with two welding condition ( with and without PWHT), with notes stating thickness limits for both conditions. (why not 2 different wps )
2. If yes, what would be thickness range for welding with & without PWHT. (PWHT is an EV so, not possible for my knowledge)
3. With reference to ASME IX- QW-200.4 Combination of Welding Procedures,: If a company has two WPS, one in GTAW process and second in SMAW process, is it acceptable to apply individually both WPS on single joint? Or new WPS will be required combing both WPS? (Are you talking about 02 PQR or 2 WPS? if 02 PQR, Yes it's possible to use the combination of 02 PQR qualified separately but, in the limite of tickness range for each process).
Your valuable feedback will be highly appreciated.
Regards,
A.Husain
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