Document: NUREG-0800
Document ID: 9bcad4cd-a055-4dc1-9315-db9d703e6f6f
Document Type: srp
Title: ENVIRONMENTAL QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1634/ML16343A167.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.11
CFR Part: 
CFR Title: 

Content:
BWR, Chapter 3, Design of Structures, Components, Equipment, and Systems,” and NUREG-1793, “Final SER AP1000, Chapter 3, Design of Structures, Components, Equipment, and Systems,” is that a mild radiation environment for electronic equipment is a total integrated dose less than 10 Gy (1E3 rad), and a mild radiation environment for other equipment is less than 100 Gy (1E4 rad). Environmental qualification for electrical equipment located in a “radiation harsh” environment (i.e., locations where radiation is the only harsh environmental condition) 3.11 -14 Draft Revision 4 – December 2017 can be accomplished in accordance with 10 CFR 50.49(f)(4) using analysis of test data (from identical materials) combined with radiation test information (i.e., partial test data), and appropriate consideration of margin and aging effects for nonmetallic components/materials when sufficient documentation is available to preclude the need for a type test. Equipment subject to being submerged is identified, consistent with the requirements of 10 CFR 50.49(e)(6). Consistent with 10 CFR 50.49(e)(7), synergistic effects must be considered when these effects are believed to have a significant effect on equipment performance. 16. RG 1.100, Revision 31, “Seismic Qualification of Electrical and Active Mechanical Equipment and Functional Qualification of Active Mechanical Equipment for Nuclear Power Plants,” endorses, with exceptions and clarificaitons, IEEE Std 344-2004, “IEEE Recommended Practice for Seismic Qualification of Class 1E Equipment for Nuclear Power Generating Stations” and American Society of Mechanical Engineers (ASME) Standard QME-1-2007, “Qualification of Active Mechanical Equipment Used in Nuclear Power Plants,” which includes provisions for the functional design and qualification of active mechanical equipment in nuclear power plants. QME-1-2007, Appendix QR-B, “Guide for Qualification of Nonmetallic Parts,” recommends a methodology and describes