Fusion Welding Manufacturing Processes

Page 120 Part 2 ✈ Chapter 3 - Checklists MRA – 1st Edition September 1998 Part 2 ✈ Chapter 2 - Airworthiness Audit Policy and Procedures Items References Result Items Certified – Completed by:

3.8.16 Metallic Arc Welding

Items References Result A-1 Are welders qualifiedcertified? QPM OK FDG NA A-2 Are the electrode manufacturers recommendations or drawing requirements observed with regard to current, polarity, and so on? QPM OK FDG NA A-3 Is the type of electrode used suitable for the material being welded? QPM OK FDG NA A-4 Are pre-heat and post-heat requirements adhered to? QPM OK FDG NA A-5 Are electrodes identified and properly stored? QPM OK FDG NA Items Certified – Completed by:

3.8.17 Tungsten Inert Gas TIG Shielded-Arc Welding

Items References Result A-1 Are welders qualifiedcertified? QPM OK FDG NA A-2 Are the various types of metals to be welded cleaned in compliance with the process standards applicable to each type? QPM OK FDG NA A-3 Is the time lapse between cleaning and welding minimised? QPM OK FDG NA A-4 Are welding rods identified and properly stored? QPM OK FDG NA Part 2 ✈ Chapter 3 - Checklists Page 121 Part 2 - Airworthiness Audit Policy and Procedures MRA – 1 st Edition September 1998 Items References Result A-5 Is the post-heat furnace temperature controlled? QPM OK FDG NA A-6 Are titanium parts inspected to ensure that they are free from oxide, scale, oil, grease or other contaminants prior to welding? QPM OK FDG NA A-7 Are titanium parts visually inspected for discoloration which is acceptable when welded surfaces are silver to light straw-yellow in colour? QPM OK FDG NA A-8 Are titanium parts welded in the open air or in a vacuum chamber? QPM OK FDG NA A-9 Are titanium test coupons used for contamination checks of the inert atmosphere in the welding chamber? QPM OK FDG NA Items Certified – Completed by:

3.8.18 CertificationQualification of NDT Personnel

Items References Result A-1 Are the operators qualifiedcertified to the appropriate standard: - MIL-STD-410; - CGSB; - 48-GP-7M radiography; - 48-GP-7M ultrasonics; - 48-GP-8M magnetic particles; - 48-GP-9M liquid penetrant; and - 48-GP-13M eddy current? QPM OK FDG NA