S9074-AR-GIB-010/278
1.
Castings requiring PT inspection in accordance with the footnotes to the tables in section 12 may be evaluated to the applicable casting acceptance standard.
2.
Castf ngs not nqulrlng PT inspection in accordance with the fwtnotes to the tables in section 12 may be evaluated in accordance with 13.2.8.2.1.
10.4.3. Radiography Radiographs for welds shall be compared with the standard for radiography and classes in accordance with table XI.
10.4.4 UT Inspection Acceptance of welds subjected to UT inspection shall be in accordance with the applicable standard and classes specified in table XI..
10.4.4.1.1 UT Callibaration for inspecting well deposited buttering for both weld metal defects and lack of bond. 10.4.4.1 UT Inspection of weld deposited buttering. Prior to UT inspection of the weld deposited buttering for defects and lack of bond. the test equipment shall be calibrated by using a calibration block which has been fabricated by buttering using the same process. filler metal, and base metal as the production part. (Equivalent S number base metal may be used. For this purpose. S-1. S-2. S-3, S-4. S-5. and S-11 material are considered equivalent. Calibration block shall have equivalent weld thickness and surface finish as the production part and shall be sufficiently thick to accommodate the required calibration holes needed to establish the distance amplitude correction (Dac) curve. Holes shall be drflled into the block as follows: Either 1/8-inch diameter flat bottomed holes shall be drilled fm the base metal Hde with their axes perpendicular to the sound beam entry surface or 1/16-inch diameter holes at least 1-1/12 inches long shall be drilled parallel to the sound beam entry surface. The holes shall be positioned so that following test metal distances (TMD) from the sound beam entry surface to the nearest surface of a hole are obtained: (a)
1.
Deposited thickness up to and including 1/2 inch:
1/16 inch TMD (T/2) TMD = 1/32 inch (T) TMD = 1/16 inch
Where T - Deposited thickness or 1/2 inch. whichever is less. For deposits less than 7/16 inch thick, the T/2 TMD hole may be omitted. 2) Deposited thickness ( T ) over 1/2 inch:
1/2 inch TMD (T/2 inch + 1/4 inch) TMD = 1/32 inch (T) TMD + 1/16 inch
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