Document: 10 CFR Part 50
Document ID: af861a42-9fbe-4cc6-bdfc-845a0ee5ac03
Document Type: cfr
Title: Maintenance of records, making of reports.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.71
Revision Date: 
Chapter: 
Section ID: 50.71
CFR Part: 50
CFR Title: 10

Content:
iating events and modes for which NRC-endorsed consensus standards on PRA exist one year prior to the scheduled date for initial loading of fuel. ( 2 ) Each holder of a combined license shall maintain and upgrade the PRA required by paragraph (h)(1) of this section. The upgraded PRA must cover initiating events and modes of operation contained in NRC-endorsed consensus standards on PRA in effect one year prior to each required upgrade. The PRA must be upgraded every four years until the permanent cessation of operations under § 52.110(a) of this chapter . ( 3 ) Each holder of a combined license shall, no later than the date on which the licensee submits an application for a renewed license, upgrade the PRA required by paragraph (h)(1) of this section to cover all modes and all initiating events. [ 33 FR 9704 , July 4, 1968, as amended at 41 FR 18303 , May 3, 1976; 45 FR 30615 , May 9, 1980; 51 FR 40310 , Nov. 6, 1986; 53 FR 19250 , May 27, 1988; 57 FR 39358 , Aug. 31, 1992; 61 FR 39301 , July 29, 1996; 64 FR 53614 , Oct. 4, 1999; 71 FR 29246 , May 22, 2006; 72 FR 49501 , Aug. 28, 2007; 86 FR 43402 , Aug. 9, 2021; 89 FR 106251 , Dec. 30, 2024] Effective Date Note Effective Date Note: See 64 FR 53582 , Oct. 4, 1999, for effectiveness of § 50.71(e) introductory text. Footnotes - 50.71 [ 1 ] Effects of changes include appropriate revisions of descriptions in the FSAR such that the FSAR (as updated) is complete and accurate.