Document: NRC Regulatory Guide
Document ID: 8a2332d3-66ca-40af-84e1-507db8b26559
Document Type: regulatory_guide
Title: TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2123/ML21235A008.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.247
CFR Part: 
CFR Title: 

Content:
for the computation of total effective dose equivalent (TEDE). • The uncertainties related to the dosimetry PRA analysis element are identified and characterized. The objective of the health effects analysis is to assess the risk of early or latent health effects (either fatal or nonfatal), or both, arising from acute and chronic exposure to released radioisotopes. The characteristics and attributes needed to achieve the objectives of the health effects analysis PRA analysis element are as follows: • Early and latent health effects are identified and included as appropriate for the application. • Dose-response models using information from recognized sources are used to estimate the risk of health effects. • The uncertainties related to the health effects PRA analysis element are identified and characterized. The objective of the economic factors PRA analysis element is to assess the economic impact of releases of radioisotopes, including the economic impact of protective actions taken to limit exposure to released material. For PRAs performed prior to selecting a proposed site, economic factors are addressed with postulated economic data that are representative of a reasonable number of sites that have been or may be considered. This postulated data contains sufficient information to allow comparison of the postulated economic data to economic data for a selected site. The characteristics and attributes needed to achieve the objectives of the economic factors PRA analysis element are as follows: • Economic factors that are appropriate for the application are identified and included. RG 1.247, Page 49 • The analysis uses cost parameter values for the time period of interest using regional data applicable to the facility and generic data (as needed) based on recognized sources. Justification is provided for the use of generic data. • Characterization of economic factors includes consideration of the protective actions taken (e.g., evacuation, temporary