Checklist of pWPS and PQR

PQR NO.: PQR-01 Rev. 00

AWS D1.1 2015 EDITION
TEST COUPON 1: FCAW

  • Clause: 4 – Test plate
  • Position: 3G, Uphill
  • Base metal: Group II or ASTM A36 (>20mm), or ASTM A516 Gr. 65.
  • Plate size: Plate 25 mm, L=550mm
  • Backing plate: 6mm W=75mm, L=550mm
  • Electrode: AWS A5.36 E71T1-C1A0-CS1 or AWS A5.20 E71T-1C
  • Shielding gas: 100% CO2
  • Visual inspection: 4.9.1
  • RT: 4.9.2, full RT
  • Mechanical test: 2 - Reduced section tension (Fig. 4.10/4.9.3), 4 – Side bend (Fig. 4.9/4.9.3)
  • CVN toughness: 12 specimens – WM / FL / FL+2 / FL+5 - A part D/ Fig. 4.28; 27J at -20 Deg.C
  • Hardness test: 1 specimen (HV10 - ASTM E 10 or E 92)
  • Macro test: 4.9.4

:stop_sign: IMPORTANT:

  • You should run a single PQR instead of combined processes due to ALL essential variables established for single process.
  • For SMAW, GTAW may qualify on pipe according to AWS Clause 9, 6G or 6GR position.
  • For SAW will qualify on plate and 1G position.

PQR NO.: PQR-02 Rev. 00

ASME IX 2015 EDITION
TEST COUPON 2: GTAW + FCAW

  • Position: 6G, Uphill
  • Base metal: APL 5L Gr. X52 to APL 5L Gr. X52, Hot rolled/Normalized , SMLS, Max. 22 HRC.
  • Pipe size: NPS 8” Sch-XS (12.7mm), L = 200 mm/piece
  • Electrode: ASME Part C, SFA5.18 ER70S-6 / SA5.36 E71T1-C1A0-CS1
  • Shielding gas: 100% Ar, 100% CO2
  • Visual inspection: QW-194
  • RT: QW-191, full length
  • Mechanical test: 2 specimens - Reduced section tension (QW-150), 4 specimens – Side bend (QW-160)
  • CVN toughness: (optional) 9 specimens – BM/HAZ/WM , QW-170, test remperature follow specification.
  • Hardness test: 1 specimen (NACE MR0175 hardness value is Vickers HV10 or HV5 (Max. 250 HV or 70.6HR 15N)
  • Macro test: QW-183

PQR NO.: PQR-03 Rev. 00

ASME IX 2015 EDITION
TEST COUPON 3 : GTAW

  • Position: 6G, Uphill
  • Base metal: ASME SA 312 TP316/316L to TP316/316L, Hot rolled, SMLS, Max. 22 HRC.
  • Pipe size: NPS 2” Sch-XS (5.54mm)
  • Specimen: 2 set for trial test, 4 sets for official test, L = 200 mm/piece.
  • Electrode: AWS FA5.9 ER316L
  • Shielding gas: 100% CO2
  • MTCs Type 3.1 or Approved by ABS/DNV/LR class (if any)
  • Visual inspection: QW-194
  • RT: QW-191, full length.
  • Mechanical test: 2 specimens - Reduced section tension (QW-150), 4 specimens – Side bend (QW-160)
  • CVN toughness: (Optional)
  • Hardness test: 1 specimen (NACE MR0175 hardness value is Vickers HV10 or HV5 (Max. 250 HV or 70.6HR 15N)
  • Macro test: QW-183.

:stop_sign: IMPORTANT:

  • ASME allows to combine welding procedure, you may qualify on single process or multi processes are acceptable, make sure all essential variables are unchanged
  • WPS may qualify either on plate or pipe, recommed to meet QW-405.2.

Read more: Simply to prepare a WPS and review PQR in ASME IX

2 Likes

It also limited in table 4.6 line 2. recommend 2 test coupons of standard pipe in table 9.10.
Range of qualification from 3 to unlimited.