Document: NUREG-0800
Document ID: a5f6fd7c-4062-40ac-b548-0ddba421091d
Document Type: srp
Title: ENVIRONMENTAL QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600397.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.11
CFR Part: 
CFR Title: 

Content:
ing 10 CFR Part 50, Appendix A, General Design Criteria (GDCs) 1, 2, and 23; and 10 CFR Part 50, Appendix B, Quality Assurance Criteria III, XI, and XVII. The review also assures conformance to 10 CFR 50.49, which contains specific requirements regarding the environmental qualification of electrical equipment important to safety that is located in a harsh environment. In addition, an application to use an alternative source term pursuant to 10 CFR 50.67 may need to include evaluations showing compliance with 10 CFR 50.49. For mechanical equipment located in a harsh environment, compliance with the environmental design provisions of GDC 4 are generally achieved by demonstrating that the non-metallic parts/components are suitable for the postulated design basis environmental conditions. For electrical and mechanical devices located in mild environments, compliance with the environmental design provisions of GDC 4 are generally achieved and demonstrated by proper incorporation of all relevant environmental conditions into the design process, including the equipment specification. Reviews to determine compliance with related requirements for (1) dynamic and seismic qualification of electrical and mechanical equipment, (2) protection of electric and mechanical equipment against other natural phenomena and external events, (3) functional qualification of mechanical equipment, (4) equipment survivability for beyond design basis hydrogen burns, and (5) qualification of I&C equipment located in mild environments are described in other SRP sections. The specific areas of review are as follows: 1. Mechanical, electrical, and I&C equipment associated with systems described in this paragraph are reviewed to determine whether they are designed to meet the requirements described under the acceptance criteria of this SRP section. Mechanical, electrical, and I&C equipment covered by this SRP section include the following: A. Equipment associated with systems that are essential for