Document: NUREG-0800
Document ID: 61ecb2ca-a7c2-4d16-bd86-57189f5d7175
Document Type: srp
Title: B-6
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550087.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
Revision 5 - March 2007 system is designed to provide a protective function are assumed to occur if the failure adversely affects the protection system performance. In general, the lack of equipment qualification may serve as a basis for the assumption of certain failures. After assuming the failures of non-safety-grade, non-qualified equipment and those failures caused by a specific event, a random single failure is arbitrarily assumed. With these failures assumed, the protection system must be capable of performing the protective functions required to mitigate the consequences of the specific event. 4.3. Quality of Components and Modules (IEEE Std. 279-1971 Clause 4.3) The applicant/licensee should confirm that quality assurance provisions of Appendix B to 10 CFR Part 50 are applicable to the protection system. The evaluation of the adequacy of the quality assurance program is addressed in the review of Chapter 17 of the SAR. 4.4. Equipment Qualification (IEEE Std. 279-1971 Clause 4.4) The applicant/licensee should confirm that the protection system equipment is designed to meet the functional performance requirements over the range of environmental conditions for the area in which it is located, as identified by Clauses 3(7) and 3(8) of IEEE Std. 279-1971, and discussed in subsection 3 above. The organization responsible for the review of I&C reviews mild environment qualification and electromagnetic interference (EMI) qualification of protection system I&C equipment, and consults with other organizations to confirm qualification for harsh environments and seismic loads. The review of harsh environment qualification is coordinated with the organization responsible for the review of environmental qualification. The review of seismic qualification is coordinated with the organization responsible for the review of seismic qualification. Mild environment qualification should conform with the applicable guidance of IEEE Std. 323-1974, "IEEE Standard for Qualifying