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The Nuclear Regulatory Commission lists the code cases that it finds to be acceptable or conditionally acceptable in Nuclear Regulatory Commission RGs, which are also incorporated by reference in 10 CFR 50.55a.  The Nuclear Regulatory Commission has a well-established practice of approving and/or mandating the use of certain parts of editions and addenda of ASME Codes in 10 CFR 50.55a through the rulemaking process of incorporation by reference.  This practice assures consistency across the industry and that the Nuclear Regulatory Commission would continue to support the use of the most updated and technically sound techniques developed by the ASME to provide adequate protection to the public.  This rulemaking also enhances the efficiency and effectiveness of Nuclear Regulatory Commission regulations by making use of current voluntary consensus standards and is consistent with applicable requirements of the National Technology Transfer and Advancement Act.  This rule is directed by SECY-10-0016.