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:
rison during a COL review with the design of the actual plant to be constructed on the site. Site-specific parameters (such as | meteorology, demographics, and hydrology) should be provided in any ESP application. o Detailed design information pertaining to structures, systems, and components need not be submitted by the applicant in an ESP application employing the PPE approach. If PPE values are used as a surrogate for design-specific values, the ESP | applicant need not provide a one-to-one replacement for the design-specific values but should provide sufficient information for the staff to develop a reasonable independent assessment of potential impacts to specific environmental resources. The design-specific information called for in an ESR may not exist for applicants using the PPE approach, so the NRC review staff | should use their experience and judgment accordingly. o PPE values do not reflect a specific design and are not to be reviewed by the NRC staff for| correctness. However, the NRC staff must determine (1) whether the application is sufficient to | enable the NRC staff to conduct its required environmental review, and (2) whether the PPE | values are not unreasonable for consideration by the staff when making its findings in | accordance with Subpart A of 10 CFR Part 52. The staff should use its judgment to determine whether sufficient information has been provided by the applicant in order for the staff to perform its independent assessment of the environmental impacts of constructing and| operating nuclear power plant(s). If a reasonable estimate of the impact to a resource cannot be evaluated from the information provided in the environmental report, then the staff may | request additional information so that a reasonable estimate can be made. 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