Document: NRC Regulatory Guide
Document ID: e16da529-b6b4-4fdf-bc3f-7490180363f3
Document Type: regulatory_guide
Title: Environmental Qualification of Certain Electric Equipment Important to Safety for Nuclear Power Plants (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2018/ML20183A423.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.89
CFR Part: 
CFR Title: 

Content:
Reprocessing Plants” to 10 CFR Part 50 require design control measures to verify the adequacy of the design, a test program to assure that all testing required to demonstrate that SSCs will perform satisfactorily in service is performed in accordance with written procedures, and the maintenance of sufficient records as evidence of quality assurance activities. • 10 CFR Part 52 requires that SSCs important to safety in a nuclear power plant be designed to accommodate the effects of environmental conditions and that design control measures, such as testing, be used to check the adequacy of the design. o 10 CFR 50.49(a) requires that holders of a combined license or a manufacturing license issued under Part 52 shall establish a program for the EQ of electric equipment as defined in 10 CFR 50.49. For a manufacturing license as defined in 10 CFR 52.157, only electric equipment defined in 10 CFR 50.49(b) which is within the scope of the manufactured reactor must be included in the EQ program. o 10 CFR 52.47(a)(13) requires that an applicant for a certified design must provide the list of electrical equipment important to safety as specified in 10 CFR 50.49(d). o 10 CFR 52.79(a)(10) requires that an application for a combined license must provide a description of the program, and its implementation, of an EQ program for electrical equipment per 10 CFR 50.49(a). The applicant must also provide the list of electric equipment that is important to safety as defined by 10 CFR 50.49(d). DG-1361, Page 3 o 10 CFR 52.137(a)(13) requires that an applicant for a standard design approval must provide the list of electric equipment that is important to safety as defined by 10 CFR 50.49(d). Related Guidance • NUREG-0800, Section 3.11, “Environmental Qualification of Mechanical and Electrical Equipment” (Ref. 6), identifies staff guidance for determining that all items of equipment that are important to safety (mechanical, electrical, and I&C equipment) are capable of