人才认证的铸造超声检测

The British Institute of Non-Destructive Testing is an accredited certification body offering personnel and quality management systems assessment and certification against criteria set out in international and European standards through the PCN Certification Scheme. Certification Services Division 1 Spencer Parade, Northampton NN1 5AA, United Kingdom Tel: +44(0)1604-259-056. Fax: +44(0)1604-231-489. E-mail: pcn@bindt.org PCN/GEN APPENDIX B1 ISSUE 5 REV A CERTIFICATION OF PERSONNEL FOR ULTRASONIC TESTING OF CASTINGS ASSOCIATED DOCUMENTS: Appendix Z1 to PCN/GEN (examination syllabus compendium) Appendix Z2 to PCN/GEN (example examination questions) CONTENTS page 1. SCOPE ......................................................................................................................................... 2 2. EXAMINATION CONTENT ........................................................................................................... 2 3. CERTIFICATION AVAILABLE ....................................................................................................... 3 4. RENEWAL AND RECERTIFICATION ........................................................................................... 3 5. GRADING ..................................................................................................................................... 3 6. REFERENCE LITERATURE ......................................................................................................... 4 Appendix B1 Page 2 of 4 Issue 5 rev A dated 17th April 2009 1. SCOPE 1.1 This document prescribes the specific requirements and procedures by which personnel may be examined and, if successful, certificated for the manual ultrasonic testing of castings. Requirements contained in this document are supplementary to those contained in PCN General Requirements for Certification of Personnel engaged in Non-Destructive Testing. 1.2 Candidates are encouraged to bring their own equipment including probes, but examination centre equipment may be hired subject to availability. Additional time will be allowed in the practical examination for candidates using examination centre provided equipment, the additional time allowed is only to calibrate equipment, producing DAC curves, checking beam spread and main beam angles not for testing samples.. 2. EXAMINATION CONTENT General information on examination content and time allowed for each written part is described in PCN General Requirements for Certification of Personnel engaged in Non-Destructive Testing. This Appendix amplifies the provisions of that document only where necessary. 2.1 Level 1 Except where exemptions apply (refer to PCN General Requirements), all candidates will be required to attempt an examination comprised of the following parts: 2.1.1 General Theory of the Ultrasonic NDT method. 2.1.2 Sector Specific Theory of the application of the Ultrasonic method to castings. 2.1.3 Sector Specific Practical examination comprised of: (i) preparation and calibration of testing equipment for use (this may involve system sensitivity and control checks). (ii) ultrasonic thickness measurement of eight samples of varying thickness and two attenuation measurements to provided NDT instructions. (iii) reporting the results in a prescribed manner in accordance with the NDT instructions provided. The total time allowed for the practical examination is four hours. The minimum pass mark for the practical part is 70% per sample tested. 2.2 Level 2 Except where exemptions apply (refer to PCN General Requirements), all candidates will be required to attempt an examination comprised of the following parts: 2.2.1 General Theory of the Ultrasonic NDT method. 2.2.2 Sector Specific Theory of the application of the Ultrasonic NDT method to the testing of castings, including questions on the basic casting process and associated defects. 2.2.3 Sector Specific Practical examination comprising: (i) preparation and calibration of testing equipment for use (this may involve system sensitivity and control checks). (ii) testing four samples (selected by the examiner) in accordance with NDT instructions (three to be provided by the test centre, and one to be generated by the candidate (see (iv) below) which will give, where appropriate, sensitivity levels and reporting thresholds. (iii) reporting test results in a prescribed manner on proforma report sheets. (iv) preparation of a detailed NDT instruction (suitable for level 1 personnel to follow) for the testing of one of the above samples to a provided procedure, code, standard or specification, and to prove the instruction by application. The total time allowed for the sector specific practical examination is eight hours, and the minimum pass mark is 70% in each sample. Appendix B1 Page 3 of 4 Issue 5 rev A dated 17th April 2009 2.3 Level 3 Except where exemptions apply (refer to PCN General Requirements), all candidates will be required to attempt an examination comprising a Basic examination and a Main Method examination. Information on the content and grading of PCN level 3 examinations is provided in PCN General Requirements for Certification of Personnel engaged in Non-Destructive Testing. Level 3 candidates who do not hold or have not held PCN level 2 certification for the ultrasonic testing of castings are required to successfully complete the examination described for level 2. 3. CERTIFICATION AVAILABLE 3.1 Level 1 Ultrasonic Testing (Castings). 3.2 Level 2 Ultrasonic Testing (Castings). 3.3 Level 3 Ultrasonic Testing (Castings). 4. RENEWAL AND RECERTIFICATION 4.1 The general rules for level 1 and level 2 renewal and recertification are fully described in PCN document CP16, and the rules for level 3 recertification are detailed in PCN document CP17. 4.2 Level 1 and Level 2 certificate holders seeking recertification will be required to undertake the practical examination described above for their level. 5. GRADING General information on the grading of examinations will be as specified in the current edition of PCN General Requirements, and information on the grading of practical examinations is provided in PCN document CP22. Appendix B1 Page 4 of 4 Issue 5 rev A dated 17th April 2009 6. REFERENCE LITERATURE Essential Reading - Standards and Specifications:  BS EN 12668-1 Non-destructive testing – Characterisation and verification of ultrasonic examination equipment – Part 1: Instruments  BS EN 12668-2 Non-destructive testing – Characterisation and verification of ultrasonic examination equipment - Probes  BS EN 12668-3 Non-destructive testing – Characterisation and verification of ultrasonic examination equipment – Part 3 combined equipment  BS EN 583-1 Non-destructive testing – Ultrasonic examination – Part 1: General principles  BS EN 583-3 Non-destructive testing – Ultrasonic examination – Part 3: Transmission technique  BS EN 583-5 Non-destructive testing – Ultrasonic examination – Part 5: Characterisation and sizing of discontinuities  BS EN 1330-4 Glossary of terms used in non-destructive testing. Ultrasonic flaw detection  BS EN 12223 Calibration block No.1 for ultrasonic examination  BS EN 12680-1 Founding. Ultrasonic examination. Steel castings for general purposes  BS EN ISO 9000 Quality management and quality assurance standards. NOTE. National or international standards equivalent to the above may be used as alternatives. Training Course Notes: PCN requires candidates to have attended an approved course of training. Accredited Training Establishments are required to provide trainees with an up-to-date set of training course notes. These are considered essential reading. Recommended Reading BS 2737: Terminology of internal defects in castings as revealed by radiography. BS 3146: Investment castings in metal. BS 4570: Fusion welding of steel castings. Basic Metallurgy for NDT. Edited by J L Taylor. British Institute of NDT, 1 Spencer Parade, Northampton NN1 5AA. Ultrasonic Flaw Detection for Technicians. J C Drury. British Institute of NDT, 1 Spencer Parade, Northampton NN1 5AA. Ultrasonic Testing of Materials. Krautkramer. George Allen & Unwin Limited, London. Non-Destructive Testing Handbook: Volume 7 - Ultrasonic Testing. ASNT. Principles and Practice of Non-Destructive Testing, edited by Dr J H Lamble. Heywood and Company, London. Non-Destructive Testing (second edition, 1991). R Halmshaw. Edward Arnold. ASNT Classroom Training Handbook (originally published by General Dynamics). ASNT Self Study Handbook (originally published by General Dynamics). ASNT Question and Answer Book. ASNT Level III Study Guide. NDT Handbook, second edition, volume 3 (1985). ASNT Student Package. ASNT Instructor Package (overheads for training). NOTE. Some of the above are available only in reference libraries. For information on sources of the above recommended reading contact The British Institute of Non-Destructive Testing, 1 Spencer Parade, Northampton NN1 5AA