Document: NUREG-0800
Document ID: 4b0fa4a0-ce32-4f59-9360-9426826a668c
Document Type: srp
Title: Rev. 4 — June 1997
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500496.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
e functions required to mitigate the consequences of the specific event. 4. Section 4.3 — Quality of Components and Modules The applicant/licensee should confirm that quality assurance provisions of Appendix B to 10 CFR 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. 5. Section 4.4 — Equipment Qualification 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 3(7) and 3(8), discussed above. HICB reviews mild environment qualification and electromagnetic interference (EMI) qualification of protection system I&C equipment, and consults with other branches to confirm qualification for harsh environments and seismic loads. The review of harsh environment qualification is coordinated with the Electrical Engineering Branch (EELB). The review of seismic qualification is coordinated with the Mechanical Engineering Branch (EMEB). Mild environment qualification should conform with the applicable guidance of ANSI/IEEE Std 323, "IEEE Standard for Qualifying Class 1E Equipment for Nuclear Power Generating Stations." Additionally, the applicant/licensee should confirm that a single failure within the environmental control system, for any area in which protection system equipment is located, will not result in conditions that could result in damage to the protection system equipment, nor prevent the balance of the protection system not within the area from accomplishing its safety function. In this regard, the loss of an environmental control system is treated as a single failure that should not prevent the protection system from accomplishing its safety functions. Because the loss of environmental control systems does not usually result in prompt changes in environmental conditions, the