ASME 磁粉规程.doc

CONTENTS 1.Scope 2.Qualification of NDE Personnel. 3.Procedure 4.Magnetizing Equipment and Material 5.Surface Preparation 6.Examination 7.Evaluation 8.Demagnetization 9.Reexamination for repaired Area and Nonconformity Control 10.Post Cleaning 11.Report SUSPENSION CONCENTRATION CALIBRATION RECORD MAGNETIC PARTICLE EXAMINATION INSTRUCTION MAGNETIC PARTICLE EXAMINATION REPORT 1.Scope 1.1.This procedure is applied to detect cracks and other discontinuities on or near the surface of ferromagnetic materials, using wet magnetic particle and AC or DC yoke technique with continuous magnetization method 1.2.This procedure is applied to welds and materials of ASME Code pressure vessels fabricated according to ASME Code Section Ⅷ Division 1. 2.Qualification of NDE Personnel All personnel performing magnetic particle examination shall be qualified and certified in accordance with the requirements of HT’s Written Practice for NDE Personnel Training, Examination, Qualification and Certification based on the requirements of“SNT-TC-1A”(Current Code accepted edition) 3.Procedure This procedure shall be supplemented by MAGNETIC PARTICLE EXAMINATION INSTRUCTION which shall be issued to every product to be examined and in which more detail parameters are specified. The Instruction shall be prepared by level Ⅱ,approved by level Ⅲ NDE examiner, 4.Magnetizing Equipment and Materials 4.1 Magnetizing equipment 4.1.1The magnetizing equipment shown in Table 1 shall be used. Table 1 Manufacturer Model Factory No. Type Technique SHE YANG CYE-1 030 AC or DC Yoke Technique 4.1.2.Calibration of Equipment The magnetizing equipment shall be calibrated at least once a year, or whenever the equipment has been damaged. If the equipment has not been in use for a year or more, calibration shall be done prior to first use. The magnetizing equipment shall be calibrated in accordance with the requirements of MAGNETIC PARTICLE