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This rule would amend the radiation protection regulations in 10 CFR part 20 to achieve a closer alignment with the dose terminology and methodology recommendations of International Commission on Radiological Protection (ICRP) 103 (2007).  The current 10 CFR part 20 regulations are based upon ICRP 26 (1978).  This rulemaking would also consider other revisions to the part 20 regulations including changes to the "As Low As is Reasonably Achievable" provisions (e.g., the use of a constraint value), a reduction in the dose limit to the lens of the eye (from 15 rem to 5 rem), a reduction in the dose limit to the embryo/fetus of a declared pregnant occupational worker (from 500 mrem to 100 mrem), expanding the categories of occupational workers subject to reporting under 10 CFR 20.2206 (REIRS database), and implementing the Commission's metrication policy.  SRM-SECY-12-0064 dated December 17, 2012, directed the staff to prepare a regulatory basis to support a proposed rule, and to submit that regulatory basis to the Commission as a voting matter.  This rule has been discontinued as part of the rebaselining activities per SRM-SECY-16-0009, dated April 13, 2016.