Document: NUREG-0800
Document ID: 63521156-eb6b-472c-9560-1e85462dc1be
Document Type: srp
Title: ENVIRONMENTAL QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070288.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.11
CFR Part: 
CFR Title: 

Content:
CFR Part 50, Appendix A, General Design Criterion 4, "Environmental and Dynamic Effects Design Bases." D. 10 CFR Part 50, Appendix A, General Design Criterion 23, "Protection System Failure Modes." E. 10 CFR Part 50, §50.49, "Environmental Qualification of Electric Equipment Important to Safety for Nuclear Power Plants." F. 10 CFR Part 50, Appendix B, "Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants," Section III, "Design Control," Section XI, "Test Control," and Section XVII, Quality Assurance Records."58 Specific criteria, task action plan items, regulatory guideguides, and industry standards that 59 provide information, recommendations, and guidance and, in general, describesdescribe a basis 60 acceptable to the staff that may be used to implement the requirements of General Design Criterion 410 CFR 50.49; General Design Criteria 1, 2, 4, and 23; and Quality Assurance Criteria III, XI, and XVII are as follows: 61 1. Simply stated, the general requirements for environmental design and qualification are 62 as follows: (1a.) The equipment shall be designed to have the capability of performing its design 63 safety functions under all anticipated operational occurrences and normal, abnormal, accident, and postaccident environments and for the length of time 64 for which its function is required. (2b.) The equipment environmental capability shall be demonstrated by appropriate testing and analyses. DRAFT Rev. 3 - April 1996 3.11-6 (3c.) A quality assurance program meeting the requirements of 10 CFR Part 50, Appendix B, shall be established and implemented to provide assurance that all requirements have been satisfactorily accomplished. The environmental design of mechanical and electrical equipment is acceptable when it can be ascertained that all three requirements are met. 2. At the time of the CP and OL application, complete and auditable records must be available (and maintained at a central location) which describe the