Interpretation: IX-04-11 IX-04-11 Subject: QW-451.1, Procedure Qualifcation Thickness Liits and Test Test S!eciens and QW-"#".4, $issiilar %ase &etal Thicknesses $ate 'ssued: $eceber "", "##4 (ile: %)#4-5** Question +1: !rocedure ualifcation test cou!on usin/ the sae P-0uber aterial and consistin/ o t2o !lates o di3erent thicknesses are 2elded to/ether, 2here the thicker o the t2o !lates +T" 11" in. thick has been ta!ered on a 4:1 ta!er do2n to the thinner !late thickness +T1 1 in. thick. $oes this test cou!on uali6 the WPS or a base etal thickness ran/e o 718 in. to 9 in. ;e!l6 +1: See 'nter!retation '<-98-47, Question +". Question +": !rocedure ualifcation ualifcation test cou!on usin/ the sae sae or di3erent P-0uber P-0uber aterials and consistin/ o t2o !lates o di3erent thicknesses, T" 11" in. thick and T1 1 in. thick, has been 2elded 2ith a sin/le !rocess. The thicknesses eet on the sae !lane 2ith neither !late bein/ ta!ered. The joint is 2elded in accordance 2ith (i/. (i/. '<-#4-11.
$oes this test cou!on uali6 the WPS or both base etals or a thickness ran/e o 718 in. to 9 in. on both sides o the 2eld joint ;e!l6 +": =es. Question +7: $oes this test cou!on uali6 the WPS or or both base etals o di3erent P-0ubers or a thickness ran/e o 718 in. to 9 in. ;e!l6 +7: 0o. QW-"#".4 QW-"#".4 reuires both base etal e tal thicknesses be in accordance 2ith QW-451.1. %ase etal T1 is ualifed 718 in. to " in. and base etal T" is ualifed 718 in. to 9 in., e>ce!t as !eritted b6 QW-"#".4+b+1. QW-"#".4+b+1.
Interpretation: IX-86-43 Section '< - 'nter!retations 0o. 20 Subject: Section '<, QW-"#".4 $ate issued: Se!teber "7, 1*98 (ile: %)98-77? Question +1: 'n uali6in/ a WPS, a6 the actual !roduction base etal thickness be used as the 2eld test cou!on thickness ;e!l6 +1: =es. Question +": in uali6in/ a WPS to co@er * and "9 base etal thicknesses, the "9 side o the test cou!on 2as ta!ered 7 to 1, akin/ the thickness at the 2eld * . 's the WPS ualifed or the t2o thicknesses ;e!l6 +": 0o.
Interpretation: IX-01-19 Subject: QW-"#".4+b, $issiilar %ase &etal Thickness $ate 'ssued: $eceber 19, "##1 (ile: %)#1-911 Question: $oes QW-"#".4+b !erit the a>iu 2eld de!osit thickness liit to be e>tended be6ond the liit s!ecifed in QW-451.1 ;e!l6: 0oA QW-"#".4 a!!lies onl6 to the base etal thickness liits.
Interpretation: IX-95-12 Subject: Section '<, QW-"#".4, $issiilar %ase &etal Thicknesses $ate 'ssued: &arch 1?, 1**5 (ile: '<-*5-1", '<-*5-17, '<-*5-14 Question: $oes QW-"#".4 include butt joints and coer joints 2hen joinin/ dissiilar base etal thicknesses 2hen !re!ared 2ith a /roo@e ;e!l6: =es.
Interpretation: IX-92-11 Subject: Section '<, QW-19#, QW-"#".", and QW-"#".4A Broo@e and (illet Welds, $issiilar %ase &etal Thicknesses $ate 'ssued: Cctober ?, 1**1 (ile: %c*1-"87 Question +1: 'n uali6in/ a tube-to-tubesheet 2eld !rocedure or a !artial !enetration /roo@e 2eld, do !ara/ra!hs QW-"#"." and QW-"#".4 a!!l6 ;e!l6 +1: =es. Question +": 'n uali6in/ a tube-to-tubesheet 2eld !rocedure or a fllet 2eld, do !ara/ra!hs QW-19# and QW-"#"." a!!l6 ;e!l6 +": =es. Interpretation: IX-86-89 Subject: Section '<, QW-"#".4 $ate 'ssued: Dune ", 1*99 (ile: %)99-C9* Question: When e!lo6in/ a /roo@e-2eld WPS to join Eat !lates o dissiilar thickness in a corner joint, is it a reuireent o QW-"#".4 that both the thicker and thinner e bers ust be ualifed 2ithin the ran/e !eritted b6 QW-451 unless the alternati@e !ro@ided in QW-"#".4 is used ;e!l6: =es.
Interpretation: IX-86-36
Subject: Section '< QW-"#".4 and QW-451.1 $ate 'ssued: Se!teber "7, 1*98 (ile: %)98-"9# Question: A 2eldin/ !rocedure is ualifed on a base aterial thickness o #.785 in. usin/ the S&W !rocess. &a6 this 2eldin/ !rocedure be used in !roduction to 2eld a tee /roo@e joint utiliFin/ a #."5 in. thick an/le to an 19 /a/e +#.#51 8 in. @essel shell ;e!l6: 0o.
Interpretation: IX-83-123 Subject: Section '<, QW-"#".4 $ate 'ssued: Cctober 3, 1*94 (ile: %)94-#*" Question: $oes QW-"#".4 a!!l6 to 2elder !erorance ualifcation ;e!l6: 0o.
Interpretation: 1X-89-99 Subject: Section '<, QW-451.1 $ate 'ssued: &arch ?, 1**1 (ile: %)*1-#"" Question: $oes QW-451.1 a!!l6 2hen 2eldin/ a !artial !enetration / roo@e joint o a tube to a header o dissiilar thicknesses ;e!l6: =esA see 0ote +1 or additional reerence !ara/ra!hs.
Interpretation: 1X-98-20 Subject: QW-"#".4+b, $issiilar %ase &etal Thickness $ate 'ssued: Dune 9, "### (ile: %)**-57* Question: When 2eldin/ a coer joint 2ith dissiilar base etal thickness, the thickness o both ebers ust be 2ithin the ualifed thickness ran/e o the WPS+s bein/ used. Go2 is the thickness or the thicker eber defned in sketches +a, +b, and +c belo2
;e!l6: (or sketch +a, the thicker o T or ts. (or sketch +b, the thicker o T or ta. (or sketch +c, the thicker o Ean/e a or hub b.
Interpretation: IX-01-23 Subject: QW-"#".4, $issiilar %ase &etal Thicknesses $ate 'ssued: &arch 11, "##" (ile: %)#1-?9* Question: WPS is ualifed to 2eld base aterial ro 1.8 to "# . &a6 that WPS be used or 2eldin/ a !art 7# thick that has been ta!ered to 15 thick to another 15 !art ;e!l6: =es.
