T9074-AS-GIB-010/271 Rev 1
e. Stage of manufacture when test will be made. f. The surface from which the test shall be performed. g. Surface finish. h. Couplant. i. Description of the calibration method. j. Scanning (for welds, include specific requirements to ensure complete coverage of the required inspection zone). k. Mode of transmission. l. Transducer size and frequency, and angle, if applicable. m. Acceptance standards. n. Method of recording inspection results. 6.5.2.1 Procedure Requalification. Changes to the ultrasonic inspection procedure within the scope of this section that affect the technical aspect of the procedure shall be approved by the ultrasonic test Examiner prior to use. Changes outside the parameters of this section or a change to a material that is not acoustically similar to that for which the procedure has been qualified shall require requalification of the procedure. 6.5.3 Discontinuity Evaluation. If discontinuities are detected, the search unit shall be directed to maximize the signal amplitude from the discontinuity for evaluation.
6.5.4 Records. Records (see 1.8) of ultrasonic inspection shall contain the following: a. Description and unique identification. b. Approved procedure identification. c. Instrument manufacturer, model number, and serial number. d. Transducer size and type. e. Search beam angle. f. Test frequency. g. Couplant.
h. Calibration standard number. i. Acceptance standard used. j. Date of inspection. k. Signature(s) of inspector(s). l. Disposition (accept/reject) of the item inspected.
6.6 TEST METHODS.
6.6.1 Forged, Wrought, and Extruded Material. Tests of forgings, wrought bars, and extruded material shall be made at the same frequency used to calibrate the equipment. Controls shall be set during the calibration and shall not be changed during the production test. Unless otherwise specified, when testing forgings, including ring, rectangular rounded, multi-sided disc or pancake and all wrought bars using longitudinal waves, the calibration criteria of table 6-1 shall apply.
6-4
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