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04420100

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  • 1. QUALIFICATION AND CERTIFICATION FOR WELDING PERSONNEL1 PURPOSE & APPLICATION 3.2.2 The correlation factors between test welds and production 1.1 This procedure establishes the minimum requirements for welds shall be based on the following essential variables qualification, certification, and re-certification of personnel who 3.2.2.1 Welding process perform welding operations at MTI. 3.2.2.2 Base metal composition group 1.2 This procedure applies to all personnel involved in the management 3.2.2.3 Base metal thickness and performance of welding. This includes personnel assigned and 3.2.2.4 Welding position utilized in training, qualification, and certification as well as those 3.2.2.5 Base metal form, sheet or tube actually performing welding operations. 3.2.2.6 Type of weld, groove or fillet 1.3 This procedure meets, as a minimum, the requirements of AWS 3.2.2.7 Other welding conditions D17.1:2001, Specification for Fusion Welding for Aerospace 3.3 Certification Applications 3.3.1 Initial Certification 3.3.1.1 Successful completion of welder qualification tests shall2 RESPONSIBILITIES be valid justification for issuance of certification for a 2.1 The Quality Director period of two years from the date qualification test results 2.1.1 Approves all welding personnel are received. 2.1.2 Issues welding stamps 3.3.2 Extended Certification 2.2 The Operations Director 3.3.2.1 Qualification of a process may be extended indefinitely 2.2.1 Approves all welding personnel provided an auditable record is maintained from the date 2.2.2 Recommends welding personnel to the Quality Director for of initial qualification that verifies the welder has used the issuance of welding stamps process within a six month period to weld applications 2.3 The Production Manager normally welded by the certified individual. 2.3.1 Coordinates welding personnel qualification and certification. 3.3.3 Disqualification 3.3.3.1 Revocation of welder certification shall result under any of the following conditions.3 PROCEDURE 3.3.3.1.1 The welder has not performed the qualification 3.1 Physical Requirements tests successfully within the previous two years and 3.1.1 Vision Requirements a record has not been maintained as required in 3.1.1.1 Welders shall have vision acuity of 20/30 or better in paragraph 3.3.2. either eye, and shall be able to read the Jaeger No. 2 3.3.3.1.2 The record required by paragraph 3.3.2 has not Eye Chart at 16in. Natural or corrected vision may be been maintained. used to achieve eye test requirements. 3.3.3.1.3 The physical requirements of paragraph 3.1 are 3.1.1.2 Vision shall be tested al least every two years. not maintained 3.2 Qualification Requirements 3.3.3.1.4 There is a specific reason to question the ability of 3.2.1 Welders shall demonstrate their skill by producing acceptable the welder to meet the requirements for qualification test welds per the requirements of paragraph 3.3. Test welds 3.4 Test Records are not required for those welds that will not be required in production welding.Qualification and Certification for Welding Personnel |1| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 2. 3.4.1 Weld Qualification Test Record MQ-04-42-01-01 will be used to 3.5.6 Other Welding Conditions document each test weld and will be maintained in the 3.5.6.1 In addition to the welding process, base metal employee’s training record. composition, base metal thickness, welding position, 3.5 Testing Requirements base metal form, and type of weld other welding 3.5.1 Welding Process conditions are listed in Table 2. 3.5.1.1 A test weld made with a given process of Table 1 qualifies only that welding process. Table 2 Other Welding Conditions Qualified by Test Weld Qualified Table 1 Backing Groove Weld Current Fusion Welding Process Type (1) Process Abbreviation Test Weld With Without Single Double Complete Partial AC DC Oxyfuel welding (OFW) Penetration Penetration With Backing X Shielded metal arc welding (SMAW) Without Backing X X Gas tungsten arc welding (GTAW) Single Welded X X Gas metal arc welding (GMAW) Groove Weld Flux cored arc welding (FCAW) Double Welded X Groove Weld Plasma arc welding (PAW) Complete X X Penetration Weld 3.5.2 Base Metals Partial X 3.5.2.1 A test weld made in a base metal included in one of the Penetration Weld AC Welding X base metal groups of Table 4.2, AWS D17 qualifies only DC Welding X that metal group. Note: (1) Applicable only to GTAW 3.5.3 Base Metal Thickness 3.5.3.1 A test weld with a base metal thickness of t shall qualify welds with a thickness range of 0.67t to 4t, except when 3.5.7 Test Welds the test weld thickness is equal to or greater than 1in., 3.5.7.1 One test weld shall be required for each combination of the qualification range is 0.67t to unlimited. welding conditions. 3.5.3.2 Qualification for sheet or tube fillet welds in material 3.5.7.2 Groove test weld in sheet per Figure 5. 0.063” thickness (sheet or tube wall) or less requires a 3.5.7.3 Fillet test weld in sheet per Figure 6. fillet weld test. A groove weld test cannot be used to 3.5.7.4 Groove test weld in tube per Figure 7. qualify fillet welds in this thickness range. 3.5.7.5 Fillet test weld in tube per Figure 8. 3.5.4 Welding Position 3.5.8 Inspection and Examination Requirements 3.5.4.1 The welding positions qualified by a given test weld 3.5.8.1 Visual position, in Table 2, are denoted by an “X” in the table. 3.5.8.1.1 Test welds will be inspected and accepted or The welding positions are designated, identified, and rejected in accordance with MQ-04-42-02-00, the illustrated in Figures 1-4. criteria for Class A welds, except 1/2in. discard may 3.5.5 Base Metal Form and Weld Type be taken at the ends of groove and fillet weld 3.5.5.1 The base metal forms and weld types qualified by a coupons in sheet or plate. given test weld, to be found at the left of Table 3, are 3.5.8.1.2 Shall be accomplished in the as welded condition. denoted by an “X” in the table. 3.5.8.2 Metallographic ExaminationQualification and Certification for Welding Personnel |2| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 3. 3.5.8.2.1 Metallographic examination shall be used in place of radiographic examination for fillet welds. 3.5.8.2.2 Blanks shall be removed in accordance with Approvals Figures 9 and 10 for fillet welds in sheet or tube. 3.5.8.2.3 When the base metal thickness is ≤.063”, sections of specimen marked “M” shall be allowed lack of 9-Dec 2006 root fusion not to exceed .1 times the actual throat Document Custodian Date (see Figure 11A). 3.5.8.2.4 All fillet test welds >.063” shall exhibit complete root fusion on both cross section surfaces of specimen marked “M” (see Figure 11B). 9-Dec 2006 3.5.8.2.5 All other acceptance criteria for MQ-04-42-02-00, Quality Director Date Class A welds apply.4 REVISION HISTORY – Authored by Travis Mcilnay, approved 4 9-Dec 2006 December 2006. President or Vice President Date 4.1 Added reference to inspection procedure MQ-04-42-02-00. Authored by Travis Mcilnay, approved 9 December 2006.Qualification and Certification for Welding Personnel |3| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 4. Table 3 Welding Position, Base Metal Form, and Base Metal Qualified by Test Weld(3)Test Weld Qualified Position Sheet Tube Position Groove Fillet(1) Groove(2) Fillet(1)Form Weld 1G 2G 3G 4G 1F 2F 3F 4F 1G 2G 5G 6G 1F 2F 4F 5F Type 1G X X X X X 2G X X X X X X XSheet Groove 3G X X X X X X X 4G X X X X X X X 1F X X 2F X X X XSheet Fillet 3F X X X X 4F X X X X X X 1G X X X X X X 2G X X X X X X X XTube Groove 5G X X X X X X X X X X X 6G X X X X X X X X X X X X X X X X 1F X X 2F X X X XTube Fillet 4F X X X X X X 5F X X X X X X X XNotes: (1) A groove weld does not qualify for fillet wilds in base metal ≤0.063” thickness (2) A sheet test weld qualifies for tube weld 1” in OD or greater. (3) Welding position, base metal form, and base metal qualified by test weld. Use of heat sinks or backing is optional. However, qualification using heat sinks or backing does not qualify for welding without heat sinks or backing. Figure 1Qualification and Certification for Welding Personnel |4| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 5. Figure 2 Figure 3 Figure 4Qualification and Certification for Welding Personnel |5| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 6. Figure 7 Figure 5 Figure 6 Figure 8Qualification and Certification for Welding Personnel |6| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006
  • 7. Figure 9 Figure 10 Figure 11B Figure 11AQualification and Certification for Welding Personnel |7| Date PrintedMQ-04-42-01-00 rev 01 Expires 1 day after printing Dec 9, 2006