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:
eactors that might be constructed at a given site. 2. An applicant may use a PPE as a surrogate for facility design information to support demonstration of compliance with 10 CFR 52.17, “Contents of Applications; Technical Information.” 3. An applicant using a PPE should identify margins to account for uncertainties in PPE values in each application. The PPE values should be sufficient to support the ESP review for compliance with 10 CFR Part 52, Subpart A and 10 CFR 51.50, “Environmental report-construction permit, early site permit, or combined license stage.” 4. Given that PPE values do not reflect a specific design and are not reviewed by the NRC staff for correctness, the granting of an ESP by the NRC does not indicate its approval of the site for any specific plant or type of plant. 5. In addition to the emergency preparedness and environmental impact findings required by 10 CFR 52.17(b) and 52.17(a)(2), respectively, site approval is contingent on the staff’s finding that a reactor or reactors whose design characteristics fall within the PPE satisfy the requirements of 10 CFR Part 100 and the other requirements of 10 CFR 52.17(a)(1). These findings take into consideration the site criteria in 10 CFR Part 100, Subpart B, and may result in conditions or limitations on the ESP in specific areas, as set forth in 10 CFR 52.24, “Issuance of Early Site Permit.” 6. The combination of site characteristics and PPE values will comprise the ESP bases that will be the focus for comparison should a COL or CP application be submitted for the site. COL and CP applicants who reference an ESP bear the risk that the design ultimately selected for the approved site might fall outside the terms and conditions of the ESP. 7. An applicant using a PPE should refer to the following guidance for developing values or ranges for specific review criteria to be included in the PPE: • RG 1.206, “Applications for Nuclear Power Plants,” includes information related to