9.3.1. Qualification and certification of personnel For NDT to be economically effective, it must locate defects quickly and accurately. The accuracy and speed at which an operator can perform a non-destructive inspection is based not only on his training and experience but also on the quantity and reliability of the test equipment. Manufacturers of aerospace and nuclear products spend considerable time and money to train and certify an inspector for each non-destructive testing method. His effectiveness is directly related to training, available equipment and working conditions. To avoid unreliable results of an NDT examination, besides using standardized equipment and test methods, the person carrying out the examination must also be properly educated, trained and certified in the method. Various standards are available to cater for this requirement. Lately, there is being started an effort to harmonize the education, training and certification. Some of the standards of this type are: ¾ ISO/FDIS 9712-99: Non-destructive testing — qualification and certification of personnel. ¾ MIL-STD-410: Qualification of inspection personnel (magnetic particle and liquid penetrant). ¾ DIN 54160: Requirements for non destructive testing personnel. ¾ SNT-TC-IA: Recommended practice for non-destructive testing personnel, qualification and certification. ¾ IIS/IIW-589-79: Recommendation relating to the training of non-destructive testing personnel. ¾ ASTM E-543: Recommended practice for determining the qualifications of non-destructive testing agencies. 9.3.2. Internal specifications and corresponding standards alls or product producers frequently have their products non-destructively inspected on their own or at an independent NDT facility prior to being shipped to the prime contractor. MIL-STD-410 and SNT-TC-IA presently specifies the procedures by which an NDT facility can qualify its own personnel; However, to qualify independent or vendor NDT facilities, the prime contractor must survey and certify each one separately. Each prime contractor therefore must establish procedures for performing this task. The NDT facilities, on the other hand, must comply with all
Posted on: Fri, 30 May 2014 04:48:47 +0000
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