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Review and Recommendations for Welding Standards in Nuclear Construction

This report provides a status update on the welding task group focusing on the welding standards used in nuclear construction, including ASME and AWS. It aims to identify inconsistencies and areas where standards hinder progress, while proposing recommendations to streamline construction, enhance safety, and ensure alignment with current technologies. The collaborative effort includes diverse stakeholders from industry, associations, and government. With ongoing discussions since November 2011, the group has conducted multiple meetings and is on track to finalize a comprehensive report by late summer 2013.

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Review and Recommendations for Welding Standards in Nuclear Construction

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  1. Status Report: Welding Task Group Report to NESCC – 23 July 2013 Tom Siewert – NIST siewertt@gmail.com

  2. Objectives • Review the welding standards (ASME, AWS, etc.) used in nuclear construction • Look for inconsistencies between them, and areas where they cause problems for users or lag behind current technology • Make recommendations to the standards bodies that would streamline the construction of safer nuclear plants (value to stakeholders)

  3. Team (~50 Participants) • About ½ representing industry (mostly chairs of AWS technical subcommittees) • About ¼ representing associations • About ¼ representing government

  4. Timeline • First meeting – November, 2011 – face to face • Thirteen meetings since then (12 teleconferences and 1 face to face • Status report – July 2013 • Final report – (Status report with a few updates) – Late-summer 2013

  5. Structure • WTG – to oversee progress and evaluate recommendations drafted by working groups • Working Groups – by technical discipline • Personnel/Qualification Issues – Jeff Fluckiger – Chair • Welding Engineer Certification - Tom Siewert • Inspection Technology - Michael Moles and Eric Sjerve • Fitness for Service - Harold Gray

  6. Top Needs (of End Users) • Unnecessary requalification of welding procedures (why do we have to repeat what we have successfully done before?) • Keeping individual standards aligned with each other • Better certification of welding personnel, especially welding engineers • Making better use of the inspection capabilities of phased array UT technology, and • Making repair decisions based on fitness for service assessments (rather than workmanship standards)

  7. Near-term Actions • Status report has just been submitted (based on discussions up to July 1) • Status report (final version) being completed in a few months

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