asme boiler & pressure vessel code an international standard section ix qualification standard...

ASME BOILER & PRESSURE VESSEL CODEAN INTERNATIONAL STANDARD

SECTION IX

QUALIFICATION STANDARD FOR WELDING AND BRAZING PROCEDURES, WELDERS, BRAZERS, AND WELDING AND BRAZING OPERATORS.

2004 EDITION, JULY 1, 2004

ASME IX, 2004 EDITION

QW-100 GENERAL

Section IX of the ASME Boiler and Pressure Vessel Code relates to the qualification of welders, welding operators, brazers, and

brazing operators and procedures that they employ in welding and brazing according to ASME BPVC and the ASME B31 Code for

Pressure Piping.


QW-101, Scope

Introduction

Sec. IX divided into two parts :

Welding & Brazing.

Each part divided into four articles.

These articles deal with the following : General requirements (Art. I Welding (W) & XI

Brazing(B)) Procedure qual. (Art. II (W) & XII (B)) Performance qual. (Art. III (W) & XIII (B)) Data (Art. IV (W) & XIV (B)) Standard Welding Procedures (Art.V)


• QW-100.1 The Purpose for qualification of a WPS

• QW-100.1 WPS QW-200.1(a) ; (b); (c); (d)

• QW-100.1 PQR QW-200.2 (a); (b); (c); (d); (e)


QW-100.2 In performance qualification

QW-300.2 The purpose of this req. is to ensure that the manufacturer or contractor has determined that his welders and welding operator using his procedures are capable of developing the minimum requirements specified for acceptable weldment. This responsibility can not be delegated to another organization. QW-301.1 Intent of Tests. The performance qualification test are intended to determine the ability of welders and welding operators to make sound weld


QW-102, Term and Definition QW/QB – 492– As welded; Backing; Backing Gas; Build-up of base

metal / restoration of base metal thickness; Buttering; DCEN; Dwell; Inter-pass Temperature; Pass; Temper Bead Welding; Test Coupon : Test Specimen; Weldment; Weld metal

QW-103, Responsibility

QW-103.1, Welding

QW-103.2, Records QW-100.3 Requirement ASME IX, 1962

PQR

WPS

PQRHAVE BEEN RUN

RUNNING PQR

PRODUCTS

WPQT

TESTWPQT


Scope of Work Inspector for WPQ(Running PQR)

1. Review Propose WPS

2. Witness Qualification Test

3. Witness , Verification or Review result of The tests

4. Review PQR

5. Review WPS


Scope of Work Inspector for WPQ(Without Running PQR)

1. Review PQR

2. Review WPS


Review Propose WPS • Contents : QW-200.1 (b) See app. B• Attention to The Essential Variable (QW 250)

especially for metals requirement notch-toughness test QW-200.3 P-No 11

• Review Base Metal Certificate for carbon equivalent (QW-403.26), ASME IIA Spec, Table QW/QB-422

• Check Filler Metal Certificate for ASME II.C Spec.


Witness Qualification Test • Before welding start : check all materials (base

metal and Filler metal) ; equipments to be meet with reviewed PWPS and welder certificate (if any).

• QW-211 Base Metal• QW-212 Type and Dimensions of Groove Welds• Welding : check actual A, V• QW-250 Verification Welding Variables• QW-203 Limits of Qualified Position for

Procedures• QW-290 TEMPER BEAD WELDING


Witness , Verification or Review result of The tests QW-202, Type of Test Req • QW – 144 VI• QW-202.1 Mechanical Tests (DT) – QW 451& QW 463,

QW 151, 152, 153, QW 161,162,163, QW 171 or 172, QW 181, 182,183,184

• QW-202.2 Groove and Fillet Welds• QW-202.3 Weld Repair and Buildup• QW-202.4 Dissimilar Base Metal Thicknesses• QW-214 Corrosion-Resistant Weld Metal Overlay• QW-216 Hard_Facing Weld Metal Overlay• QW-217 Joining of Composite (Clad Metals)• QW-218 Applied Linings• QW 191 – RT


Review PQR • QW 200.2 (a) PQR• QW 200.2 (b) Contents• QW 200.2 (c) Changes to The PQR• QW 200.2 (d) Format , see QW 483

(app. B)• QW 200.2 (e) Availability of the PQR


Review WPS• QW-200.1 (c) Changes to the WPS• QW-200.1 (e) Avaibility of the WPS• QW-200.2 (f) Multiple WPSs With One PQR /

Multiple PQRs With One WPS• QW-200.4 Combination of Welding Procedures• QW-424 Base Metals Used for Procedure

Qualifications• QW-451 Procedure Qualification Thickness

Limits and Test Specimens• QW-201 Manufacturer’s or Contractor’s

Responsibility • QW-103 Qualification made in accordance with

the requirements of the 1962 edition


Scope of Work Inspector

for Welding Performance Qualification.

• Witness Qualification Tests

• Witness , Verification or Review result of the tests

• Qualified Welder

• Review WPS to consideration With List of Welder which will be test

• Review Welder Certificate


QW-300.1 A welder or welding opr. May be qualified by :

• Radiography of test coupon

• Radiography of his initial production welding or

• By bend test taken from test coupon except as stated in QW-304 and QW-305


Review WPS to consideration With List of Welder which will be test

• Attention to The Essential Variable (QW 350 & QW 360) and compare to WPS (QW-301.2)

• Compare list of welder with identification of welders and welding operators.

• Check Base Metal Certificate for carbon equivalent

• Check Filler Metal Certificate for ASME II.C Spec


Witness Qualification Test • Before start welding : check all materials, equipments, position,

personnel shall comply with reviewed WPS and list of welder • QW-301.2 Qualification Tests

– Changes beyond which requalification is required are given in QW-350 for welder dan in QW-360 for welding operators.

– Allowable visual, mechanical and RT are described in QW-304 and QW-305

– The welder or welding operator who prepares the WPS qualification test coupons meeting the requirements of QW-200 is also qualified within the limits of the performance qualifications, listed in QW-304 for welder and QW-305 for welding operators. He is qualified only within the limits for position specified in QW-303

– The performance test may be terminated at any stage of the testing procedure, whenever it becomes apparent or welding operator does not have the required skill to produce satisfactory results.


• QW-310.1 Test Coupons• QW-310.2 Welding Groove With Backing• QW-310.3 Welding Groove Without Backing• QW-304 Welders, with limitation QW-350 & QW

416• QW-305 Welding Operators with limitation QW-360• QW-306 Combination of Welding Processes (det)• QW-381 Corrosion Resistant Weld Metal Overlay• QW-382 Hard-Facing Weld Metal Overlay (Wear

Resistant)• QW-383 Joining of Clad Materials and Applied

Linings


Witness , Verification or Review result of The tests

• QW-302 Type of Test Required• QW-301.4 Record of Tests• QW-304.1, QW-304.2• QW-305.1, QW-305.2 • If testing found reject, QW-321 Retest


Welder Qualified • QW-301.3 Identification of Welders and

Welding Operators • QW-303 Limits of Qualified Positions and

Diameters (See QW-461)• QW-423 Alternate Base Materials for

Welder Qualification• QW-452 Performance Qualification

Thickness Limits and Test Specimens• QW-322 Expiration and Renewal of

Qualification


Review Welder Certificate • Review all item Welder Qualified

and contractor employee QW-300.2 ; QW-300.3

• Compare with WPS will be used production welding (QW-304 ; QW-305) within limits of the essential variables of QW-350 and QW-360


STANDARD WELDING PROCEDURE SPECIFICATIONS (SWPSs)

• QW-500 General

• QW-510 Adoption of SWPSs

• QW-511 Use of Demonstrated SWPSs

• QW-520 Use SWPSs Without Discrete Demonstration

• QW-530 Forms

• QW-540 Production Use of SWPSs

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