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:
ndicate whether the radiation estimates account for factors affecting the source term such as containment leak rate, meteorological dispersion (if appropriate), and operation of other ESF systems. The applicant should list all assumptions used in the calculation. Synergistic effects must be considered when these effects are believed to have a significant effect on equipment performance. 26. Where the NRC staff plans to conduct an audit of the design and procurement specifications, the applicant should make available procurement specifications as discussed in the introduction of 10 CFR 52.47. Technical Rationale The technical rationale for application of these acceptance criteria to reviewing this SRP section are discussed in the following paragraphs: 3.11 -17 Draft Revision 4 – December 2017 1. Compliance with 10 CFR 50.49 requires that the applicant identify a list of electrical and I&C equipment and establish a program, as described therein, for qualifying electrical and I&C equipment important to safety located in a harsh environment. In addition to the design requirements in Appendix A to 10 CFR Part 50, the NRC regulations in 10 CFR 50.49 provide specific requirements related to the environmental qualification of electrical and I&C equipment located in a harsh environment. The environmental qualification process described by this regulation provides requirements to ensure that equipment will be able to perform acceptably during all anticipated operating conditions, even after being degraded due to exposure to service conditions during its qualified life. Meeting the requirements of 10 CFR 50.49, 10 CFR 50.34(b)(3), 10 CFR 52.47(a)(5), 10 CFR 52.79(a)(3), and 10 CFR 52.157(e) provides assurance that electrical and I&C equipment important to safety that are located in a harsh environment are environmentally qualified and are capable of performing their intended safety function. 2. Consistent with 10 CFR 50.49(e)(4), 10 CFR 50.49(e)(6), 10 CFR 50.49(e)(7) 10 CFR