Document: NUREG-0800
Document ID: 04c894f5-e3ab-479e-8bca-0722777c79a7
Document Type: srp
Title: Revision 4 – January 2016
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1502/ML15027A401.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11
CFR Part: 
CFR Title: 

Content:
nrestricted areas that were calculated and determined to be acceptable by the Hydrologic Engineering staff, as described in Item 4, above. 6. SRP Dose Acceptance Criteria The health physics staff will compare the results of the analyses of radiological impacts with the appropriate acceptance criteria when assessing the acceptability of these results. The acceptance criteria presented here are based on doses to members of the public, rather than on effluent concentration limits, as was the case in previous guidance. The reason for this change is the need to better account for the effects of multiple exposure pathways. Releases may affect surface water and groundwater differently; consequently, the impact in some instances may be by way of direct consumption of water, while in others the impact may be only by indirect use of water (e.g., for livestock watering or crop irrigation). These different exposure scenarios and pathways can be quantified, because the applicant is expected to describe uses of water resources based on local or regional land-use census information. As described in the 2007 version of BTP 11-6, the acceptance criteria stated that the postulated release should not result in radionuclide concentrations in useable surface water or groundwater exceeding the effluent concentration limits (ECLs) of 10 CFR Part 20, “Standards for Protection against Radiation,” Appendix B, “Annual Limits on Intake (ALIs) and Derived Air Concentrations (DACs) of Radionuclides for Occupational Exposure; Effluent Concentrations; Concentrations for Release to Sewerage,” Table 2, Column 2, and Note 4 for radionuclide mixtures. While the ECLs are a reasonable standard for direct consumption of water, their use is not as obvious or practical for indirect uses of water or for the consumption of impacted food products. As a result, the revision of this BTP applies a dose-based limit instead, because it provides the most flexibility in assessing and meeting the acceptance