1、Recommended Practice for Ultrasonic Evaluation of Pipe ImperfectionsAPI RECOMMENDED PRACTICE 5UESECOND EDITION,JUNE 2005ADDENDUM 1,APRIL 2009 REAFFIRMED,JULY 2020Recommended Practice for Ultrasonic Evaluation of Pipe ImperfectionsUpstream SegmentAPI RECOMMENDED PRACTICE 5UESECOND EDITION,JUNE 2005AD
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16、.44.1Basis for Inspection.44.2Applicability of Inspection.44.3Variability of Results.45CERTIFICATION OF NONDESTRUCTIVE TESTING PERSONNEL.46PROVE-UP TECHNIQUE DESCRIPTIONS.46.1Amplitude comparison technique(ACT).46.2Amplitude Distance Differential Technique(ADDT).47GENERAL INSPECTION CRITERIA.47.1Equipment.47.2Instrument and Transducer Equipment Calibration/Certification .47.3Reference Standards.57.4Transducer,Angle Beam Wedge and Couplant Criteria.57.5Instrument Criteria.68STANDARDIZATION.68.1Ge
