Document: NUREG-0800
Document ID: 96afb1d6-6ce9-41e4-b4ec-1fc7747bc0b2
Document Type: srp
Title: Revision 8 – January 2021
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML2033/ML20339A647.pdf
Revision Date: 2023-05
Chapter: 7
Section ID: 7
CFR Part: 
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Content:
10 CFR 50.67, “Accident source term,” the NRC provides dose guideline values for analysis of the acceptability of a fission product release from a currently operating NPP as an alternative source term. • The regulations in 10 CFR 50.69, “Risk-informed categorization and treatment of structures, systems and components for nuclear power reactors,” allow a licensee or applicant to voluntarily comply with the requirements of that section as an alternative to the requirements in 10 CFR 50.69(b) by implementing a risk-informed categorization and treatment of the SSCs of its nuclear power reactor. • In 10 CFR 50.34(a)(1)(ii)(D), the NRC provides site dose guideline values for CP applications filed under 10 CFR Part 50 after January 10, 1997. • In 10 CFR 52.47(a)(2)(iv), the NRC provides site dose guideline values for standard DC applications. • In 10 CFR 52.79(a)(1)(vi), the NRC provides site dose guideline values for COL applications. • In 10 CFR 52.137(a)(2)(iv), the NRC provides side dose guideline values for SDA applications. • In 10 CFR 52.157(d), the NRC provides site dose guideline values for ML applications. 2. Relevant Guidance The following documents provide useful guidance in the evaluation of possible CCFs in digital safety system designs: • NUREG/CR-6303 summarizes several diversity and defense-in-depth (D3) analyses performed after 1990. It presents a method for analyzing proposed DI&C systems to identify vulnerabilities to common-mode failures4 and to confirm that the design incorporates adequate D3 strategies to address them. This analysis method postulates common-mode failures that could occur within digital reactor protection systems and 4 Note that while these documents use the term “common-mode failure,” this BTP uses the term “common-cause failure” because it better characterizes this type of failure. BTP 7-19-7 Revision 8 – January 2021 determines what portions of a design need additional D3 measures to address such