Document: NRC Regulatory Guide
Document ID: f0baf50b-5bb7-4783-b2f9-9586e09c97e1
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Stations + HISTORY - HISTORY 02/2017 – DG-4026 , Proposed Revision 3 09/2014 – Periodic Review of Revision 2 – Revise (Rev. 3)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1611/ML16116A068.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2
CFR Part: 
CFR Title: 

Content:
defined in 10 CFR 50.2, “Definitions”; • SSCs relied upon to mitigate accidents or transients or used in plant emergency operating procedures; • SSCs whose failure could prevent safety-related SSCs from fulfilling their safety-related function; • SSCs whose failure could cause a reactor scram or actuation of a safety-related system; • SSCs necessary to comply with 10 CFR Part 73, “Physical Protection of Plants and Materials” (Ref. 28); • SSCs necessary to comply with 10 CFR 50.48, “Fire Protection,” and Criterion 3 of 10 CFR Part 50, Appendix A; and • onsite emergency facilities, that is, technical support and operations support centers, necessary to comply with 10 CFR 50.47, “Emergency Plans,” and 10 CFR Part 50, Appendix E. Construction does not include: • changes for temporary use of the land for public recreational purposes; • site exploration, including necessary borings to determine foundation conditions or other reconstruction monitoring to establish background information related to the suitability of the site, the environmental impacts of construction or operation, or the protection of environmental values; DG-4026, Page 22 • preparation of a site for construction of a facility, including clearing of the site, grading, installation of drainage, erosion and other environmental mitigation measures, and construction of temporary roads and borrow areas; • erection of fences and other access control measures; • excavation; • erection of support buildings (such as, construction equipment storage sheds, warehouse and shop facilities, utilities, concrete mixing plants, docking and unloading facilities, and office buildings) for use in connection with the construction of the facility; • building of service facilities, such as paved roads, parking lots, railroad spurs, exterior utility and lighting systems, potable water systems, sanitary sewerage treatment facilities, and transmission lines; • procurement or fabrication of