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:
FR 50.49 for environmental qualification of electrical equipment that is important to safety and located in a harsh environment. RG 1.89 endorses the provisions of IEEE Std. 323 as being acceptable to the staff, and provides supplementary guidance for satisfying the Commission's regulations regarding the environmental qualification of electrical equipment located in a harsh environment. The assumptions in RG 1.183, Appendix I supersede Regulatory Positions 2.c(1) and 2.c(2) and Appendix D of 3.11 -12 Draft Revision 4 – December 2017 Revision 1 of RG 1.89, for those applicants using the alternative source term described in RG 1.183, as their licensing basis. 7. RG 1.97, “Criteria for Accident Monitoring Instrumentation for Nuclear Power Plants,” provides guidance acceptable to the staff for the environmental qualification of the post- accident monitoring equipment described in Subsection I, Item 1(F), of this SRP section, as well as instruments and controls for the equipment described in Subsection I, Items 1(A) to 1(E), of this SRP section. These criteria, as supplemented by those of RG 1.89, should be used to evaluate the environmental qualification of the I&C equipment. 8. RG 1.152, “Criteria for Use of Computers in Safety Systems of Nuclear Power Plants,” endorses IEEE Std. 7-4.3.2-2003, “Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations,” These documents contain guidance acceptable to the staff for the environmental design and qualification of computer- specific requirements, and should be used in conjunction with NUREG-0588 and RG 1.89, as appropriate, for evaluating computer-specific requirements. 9. RG 1.153, “Criteria for Safety Systems,” endorses IEEE Std. 603-1991, “Criteria for Safety Systems for Nuclear Power Generating Stations.” These documents contain guidance acceptable to the staff for the environmental design and qualification of power, instrumentation, and control portions of the