S9074-AR-GIB-010/278
Responsiveness of the filler metal to the specific heat treatment employed shall be established by procedure qualification test. Heat treatment as appropriate shall be performed after the foregoing operations. Required MT inspection shall be performed after such heat treatment. Should any weld repairs develop by reason of the MT inspection, repair shall be accomplished and re-radiography of the repair shall be performed if required. Post weld treatment shall then be either re-heat treatment or stress relief treatment as appropriate. MT inspection shall be performed following the final thermal treatment operation. Stress relief of repair welded castings shall be in accordance with table VI and section 8. In this regard where the tern weldment is used, it shall be construed to include repair welded castings. 13.2.7 Stress relief of weld repairs. When stress relieving of repair welded castings is performed in furnaces having recording pyrometric controls, the furnaces shall be calibrated to verify that the temperature variation within the furnace does not exceed 75°F. Calibration of the furnace shall be maintained by a recheck at intervals of no less than 6 mnths or after any changes or repairs to the furnace that might affect its temperature distribution. Holding temperatures. time and cooling rates shall be as established by the approved welding or heat treatment procedure. 13.2.7.1 Alternate temperature measuring methods for furnace and local stress relief. Alternate temperature measuring methods specified in section 8 are applicable
13.2.8 Inspection of repair welds
13.2.8.2 Surface passes. Completed repair welds. including the adjacent casting surface for a distance of 1/2 inch from the weld edge. shall be inspected by the MT or PT methods. as may be applicable except as noted in 13.2.8.2.1. 13.2.8.2.1 For non-ferrous castings where PT inspection is not required by footnote 2 to table XI11 and footnote 4 to tables XIV and XV, the adjacent casting surface (1/2 inch from weld edges) shall be visually examined. For the heat affected zone (3/16 inch fm weld edges). the visual examination shall be at 5X minimum magnification. Where the surfaces within 1 inch of weld edges are PT inspected inadvertently during the inspection of the weld deposit. suspect indications within the 1-inch area shall be noted: then the developer and penetrant shall be removed and suspect areas visually examined at 5X minimum magnification. Linear indications greater than 1/16 inch shall be cause for rejection by the visual examination specified herein. 13.2.8.1 Exploration and repair of cracks. Visual evidence of cracks shall be explored at 5X magnification or by PT inspection and the cracks shall be removed and repaired by weldlng (see 13.2.8.2) or faired in or radiused providing wall thickness is not reduced below the specified allowable thickness. PT inspection shall be limited to the immediate area of the defect when exploring defects in welds in S-51. S-52, and S-53 materials that will subsequently be repaired by welding. Surrounding areas which may later be overwelded shall be masked away fm penetrant or developer. When a defect has been removed, the PT inspected area shall be burred with a carbide burr before welding any further.
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