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Qualification Documents Inspection Procedures

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Qualification Documents Inspection Procedures

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    1. Qualification Documents Inspection Procedures Phil Ashwin EPRI 3rd International Workshop of In-service Inspection Qualification Bodies October 15-16, 2008 Vienna, Austria

    2. Improving In-service Inspection Personnel Equipment Procedures

    3. Observations Qualified NDE systems work when executed fully Use the right probes and prepare the surface Ensure that the contact surface is adequate everywhere Document all areas of poor surface condition and all areas of scan limitation, and don’t take coverage credit there Follow all the steps of data analysis before reaching a conclusion

    4. But things may be different when applied… Experience has demonstrated that qualification of procedures alone may not guarantee a successful ISI campaign Planning and Examination Preparation Environmental Factors Decision Making Poor examination brings into question the qualification process !

    5. What can be done… EPRI is preparing a guideline for the use of utilities in preparing for and executing, ultrasonic examinations Prompted by field implementation issues Addresses the key underlying factors Human factors Utility and vendor planning for the outage

    6. Overview - Guideline for Conducting Ultrasonic Examinations of Dissimilar Metal Welds Introduction and Scope Document Contents Section 2 - Human Factors Section 3 - Role of Utility Section 4 – Role of Vendor Section 5 – Collaboration Vendor/Utility Section 6 – Conclusions/NEI 03-08 recommendations The guidance will include one item categorized as “Needed” according to NEI 03-08. This item will require each utility to have a process for managing the measurement and improvement of weld surface conditions for dissimilar metal welds

    7. Examples taken from the guidelines… Much of the report will focus on items defined by NEI-03-08 as good practices Utility to establish that a qualified procedure is available, and prepare for any site-specific alternative qualifications that are needed Utility personnel should have a thorough understanding of the examination procedures. Utility to ensure that vendor has available all the proper, qualified equipment for the examination scope, and scope expansions.

    8. Looking forward what can we do… Following Qualification, what can the Qualification Body do to improve in-service inspection?

    9. Discussion

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