3150-AH42 202310 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 3150 Nuclear Regulatory Commission NRC Performance-Based Emergency Core Cooling System Acceptance Criteria [NRC-2008-0332]

This rulemaking would amend the NRC's regulations to update the fuel cladding acceptance criteria for emergency core cooling system loss-of-coolant accident (LOCA) evaluations. The rule would establish new emergency core cooling system acceptance criteria that are performance-based and reflect research findings that identified new embrittlement mechanisms for fuel rods with zirconium alloy cladding under LOCA conditions. The scope of this rulemaking would affect nuclear power reactor licensees. The rulemaking addresses two petitions for rulemaking (PRM-50-71 and PRM-50-84).

]]> Substantive, Nonsignificant Previously Published in The Unified Agenda Final Rule Stage No No 10 CFR 50 42 U.S.C. 2201 42 U.S.C. 5841 No ANPRM 08/13/2009 74 FR 40765 ANPRM Comment Period End 10/27/2009 NPRM 03/24/2014 79 FR 16106 NPRM Comment Period End 08/21/2014 Second NPRM 04/20/2015 80 FR 21658 Second NPRM Comment Period End 07/06/2015 Final Rule 12/00/2023 The final rule to amend 10 CFR 50.46c was provided to the Commission on March 16, 2016 (SECY-16-0033) (ADAMS Accession No. ML15238A947). This rulemaking formerly was titled "50.46b Fuel Cladding." No No None No No No Dennis Andrukat 3150 Nuclear Regulatory Commission NRC 301 415-3561 dennis.andrukat@nrc.gov Office of Nuclear Material Safety and Safeguards, Washington DC 20555-0001