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Understanding ASNT SNT-TC-1A Recommended Practice and CP-189 Standard Dr. Boris Muravin

Understanding ASNT SNT-TC-1A Recommended Practice and CP-189 Standard Dr. Boris Muravin. ASNT Level III in Acoustic Emission training series. About SNT-TC-1A.

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Understanding ASNT SNT-TC-1A Recommended Practice and CP-189 Standard Dr. Boris Muravin

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  1. Understanding ASNT SNT-TC-1A Recommended Practice and CP-189 Standard Dr. Boris Muravin ASNT Level III in Acoustic Emission training series More at www.muravin.com

  2. About SNT-TC-1A • Recommended practice was developed by the American Society for Nondestructive Testing as a standard guide of qualification and certification of NDT personnel by the employer. • It is not a strict specification. • The first edition was published in 1966, following editions 1968, 1971, 1975, 1980, 1984, 1988, 1992, 1996 and 2001. • The last edition was published in 2006. More at www.muravin.com

  3. Thirteen Test Methods Covered • Acoustic Emission Testing. • Electromagnetic Testing. • Laser Testing Methods. • Leak Testing. • Liquid Penetrant Testing. • Magnetic Flux Testing. • Magnetic Particle Testing. • Neutron Radiographic Testing. • Radiographic Testing. • Thermal/Infrared Testing. • Ultrasonic Testing. • Vibration Testing. • Visual Testing. More at www.muravin.com

  4. Goal of the Practice • Provide an outline for Employer for qualification and certification of NDT personnel. • It is up to Employer to modify the recommended practice to meet his specific requirements. • “Certification is written testimony of qualification”. • “Qualification is demonstrated skill, demonstrated knowledge, documented training, and documented experience required for personnel to properly perform the duties of a specific job.” More at www.muravin.com

  5. Personnel Qualification Levels • SNT-TC-1A defines three levels of qualification. • A person before certification for one of three levels is considered trainee. • More levels can be introduced by Employer if needed. • NDT Level I is the first qualification level. Level I operates under Level II or Level III instructions and supervision. Level I can perform some of calibrations or tests and even document them according to written procedures. • NDT Level II should be capable to interpret results and be familiar with test application, scope and limitations of the test. Level II can guide and supervise trainees and Level I personnel. • NDT Level III should be capable to develop new techniques, codes and standards, interpret and report results, develop acceptance criteria, train and examine Level I and II, be familiar with other NDT methods, manufacturing processes and materials. More at www.muravin.com

  6. Employer’s Written Practice • SNT-TC-1A recommends that Employer will establish a written practice that specifies training, experience and examination requirements for NDT personnel. • Written practice should define responsibilities of all Levels. More at www.muravin.com

  7. Recommended Training and Experience Requirements • SNT-TC-1A defines experience and education requirements for all three levels. • AE Level I criteria: 40 hours of training, minimum 210 hours experience gained during 1.5-9 months or alternatively 3 months of work experience. Those finished 2 years in collage need 32 hours. • AE Level II criteria: 40 hours of training, minimum 630 hours of experience gained during 4.5-27 months or alternatively 9 months of experience. • AE Level III criteria: 4 years of collage or university + 1 year of experience beyond the Level II requirements or 2 years of collage or university + 2 years of experience beyond the Level II requirements or 4 years of experience. • Direct Level II certification requires sum of training and experience of Level I and II. • Level III training and experience should be sum of Level I and II. • ANSI/ASNT CP-105-2006 “ASNT Standard Topical Outlines for Qualification of Nondestructive Testing Personnel” provides outlines and references for organized training courses. More at www.muravin.com

  8. Examination • Level III is responsible for exam and grads or a qualified person delegated by Level III. • Level I and II exams consist of specific, general and specific examinations. • Average grade should be above 80%. No individual exam can be below 70%. • Acoustic Emission Level I general exam has 40 questions, specific exam 20 questions. • Acoustic Emission Level II general exam has 40 questions, specific exam 20 questions. • Practical exams for Level II and III should have at least ten different checkpoints requiring an understanding of test variables and specific procedures. More at www.muravin.com

  9. Vision Examinations Requirements • Near-Vision Acuity. According to Jaeger Number 2 or equivalent, not less than 12 inches(30.5 cm) on a standard Jaeger test chart. • Color Contrast Differentiation. More at www.muravin.com

  10. Certification • ASNT philosophy is that the Employer is responsible for certification of all Levels. • All experience, training and exams should be documented and kept in file. • Certification can be revoked by Employer and personnel re-examined any time. • Recommended re-certification interval is 5 years. • Certificate revoked when employment is terminated. More at www.muravin.com

  11. SNT-TC-1A vs. CP-189 • SNT-TC-1A is recommended practice for qualification and certification. It uses “should” wording. • CP-189 is standard for qualification and certification. It uses “shall” wording. More at www.muravin.com

  12. CP-189 NDT Levels • There are six levels of qualification according to CP-189. • NDT Level III is holder of ASNT Level III, PdM Level III or ACCP Professional Level III certificate. • NDT Level I and II are similar in responsibilities with SNT-TC-1A. • NDT Level II limited has similar responsibilities of techniques with NDT Level II but only in specific techniques (radiographic and ultrasonic) specified in Appendix B of CP-189. No techniques defined for Acoustic Emission. • Trainee – person that have not certified yet for any level. • NDT Instructor – an individual qualified to perform education and training of NDT personnel. More at www.muravin.com

  13. Criteria for NDT Instructor • ASNT Level III certificate OR • Academic credentials equivalent to B.S. in exact science and adequate knowledge in the NDT method OR • Graduate of a two-years school of science or NDT and have at least 5 years as an NDT Level II. • Have 10 years of NDT experience as an NDT Level II. More at www.muravin.com

  14. CP-189 • Written specific and practical examinations for Level III. • NDT Level I and II should have general, specific and practical examinations. • Vision examination using Jaeger Number 1 at a distance not less than 12 inches. Annual vision exam. Color exams during each rectification. • Recertification after 5 years. • Re-examination after 10 years. More at www.muravin.com

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