Union Electric Company, dba Ameren Missouri, Callaway Plant; Unit No. 1

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Nuclear Regulatory Commission [Docket No. 50-483; NRC-2022-0139] AGENCY: Nuclear Regulatory Commission. ACTION: Exemption; issuance. SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is granting exemptions from certain portions of the acceptance criteria for emergency core cooling, and the general design criteria for emergency core cooling, containment heat removal, and atmosphere cleanup to allow the use of a risk-informed analysis to evaluate the effects of debris in containment following a loss-of-coolant accident for the Callaway Plant, Unit No. 1 (Callaway) located in Callaway County, Missouri. The exemptions are in response to a request dated March 31, 2021, from Union Electric Company, doing business as Ameren Missouri (the licensee) related to the licensee's proposed approach to resolve a generic safety concern for pressurized water reactors associated with potential clogging of emergency core cooling and containment spray system strainers during certain design basis events. DATES: The exemptions were issued on October 21, 2022. ADDRESSES: Please refer to Docket ID NRC-2022-0139 when contacting the NRC about the availability of information regarding this document. You may obtain publicly available information related to this document using any of the following methods: Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2022-0139. Address questions about Docket IDs in Regulations.gov to Stacy Schumann; telephone: 301-415-0624…