Document: NRC Regulatory Guide
Document ID: f01d709b-086b-4bc7-9dc5-ed791695faa4
Document Type: regulatory_guide
Title: Use of Plant Parameter Envelope In Early Site Permit Applications for Nuclear Power Plants + HISTORY - HISTORY 06/2021 – DG-4029 , Proposed Revision 0
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML2104/ML21049A181.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-4.27
CFR Part: 
CFR Title: 

Content:
o During the review of a COL application referencing an ESP, the staff will assess the environmental impacts of the construction and operation of a specific plant design. If the environmental impacts addressed in the EIS written at the ESP stage are found to be bounding by the staff, no additional analysis of these impacts is required, even if the ESP applicant employed the PPE approach. However, environmental impacts not considered or not bounded at the ESP stage should be assessed at the COL stage. In addition, measures and controls to limit adverse impacts should be identified and evaluated for feasibility and adequacy in limiting adverse impacts at the ESP stage, where possible, and at the COL stage. As a result of the staff’s environmental review of the ESP application, the staff may determine that conditions or limitations on the ESP may be necessary in specific areas, as set forth in10 CFR 52.24. Therefore, the staff should identify in the EIS when and how assumptions and bounding values limit its conclusions on the environmental impacts to a particular resource. DG-4029, Page-7 D. IMPLEMENTATION The NRC staff may use this regulatory guide as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this regulatory guide to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests,” (Ref. 14), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes forward fitting as that term is defined and described in Management