Document: NRC Regulatory Guide
Document ID: fa5814c8-b91a-435c-8ee0-5cd4915f8b80
Document Type: regulatory_guide
Title: Performance-Based Emergency Preparedness for Small Modular Reactors, Non-Light-Water Reactors, and Non-Power Production or Utilization Facilities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1808/ML18082A044.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.242
CFR Part: 
CFR Title: 

Content:
lity. This approach has been generalized from the dose assessment methodologies that informed EPZ size determinations in NUREG-0396, “Planning Basis for the Development of State and Local Government Radiological Emergency Response Plans in Support of Light-Water Nuclear Power Plants.” For the plume exposure pathway EPZ determination, the applicant and licensee should demonstrate the following in the technical analysis: a. The size of the EPZ should encompass an area where it may be expected that prompt protective measures, such as evacuation and sheltering, may be needed to minimize the exposure to individuals. b. If the applicant and licensee demonstrates that prompt protective measures are not required due to timing of releases from a credible accident or that extended time exists after a release prior to reaching the need for evacuation or sheltering, such that an all hazards emergency management plan could initiate actions in sufficient time to adequately protect the public safety and health, such accidents may be excluded from consideration in determining the size of the EPZ. c. If the proposed plume exposure pathway EPZ extends beyond the site boundary and if the application is for an operating license (OL), combined license (COL), an early site permit (ESP) that contains plans for coping with emergencies under 10 CFR 52.17(b)(2)(ii), or an ESP that proposes major features of the emergency plans and describes the EPZ, then the exact shape of the plume exposure pathway EPZ would need to be determined in relation to local emergency response needs and capabilities as they are affected by such conditions as demography, topography, land characteristics, access routes, and jurisdictional boundaries. A-2. Methodology Basis/Assumptions The following generalized methodology has been developed to be consistent with the approaches used in the NUREG-0396 quantitative analyses, to the extent that the details of those analyses could be discerned.” Key assumptions of