Document: NUREG-0800
Document ID: 67030b27-389f-448c-8522-1a593f9928e6
Document Type: srp
Title: for instrumentation used to monitor and control radioactive effluent releases.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740449.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
10 CFR 50.36a using Generic Letter 89-01, and guidance contained in NUREG-1301 (PWR) or NUREG- 1302 (BWR) and NUREG-0133 for either type of plant. (Note: Generic Letter 89-01 is included in NUREG-1301 and NUREG-1302.). 6. BTP 11-6 describes acceptable methods to evaluate the consequences associated with the release of radioactive liquids following the postulated failure of a tank and its components, and impacts of such radioactive materials on the nearest potable water supply, located in an unrestricted area, for direct human consumption or indirectly through animals, crops, and food processing. The analysis and results proposed by the applicant will be evaluated using the guidance of BTP 11-6 and acceptance criteria. The reviewer will evaluate the type of event leading to the assumed failure of tank and its components; the assumed source term, as radionuclide concentrations and total inventory of radioactivity; process by which the radioactivity is assumed to be released in the environment from plant facilities; use of plant design features and credit assumed in mitigating the amounts of radioactivity released or duration of the release; basis for the selection of the nearest receptor; dispersion and dilution mechanisms to the nearest receptor; types of exposure pathways considered; and resulting radionuclide concentrations at the receptor location. The reviewer will determine whether the 11.2-15 Revision 4 - May 2010 analytical approach, assumptions, and model parameters used in assessing the impacts are adequately conservative, consistent with the guidance of BTP 11-6, and confirm whether the acceptance criteria of BTP 11-6 are met at the nearest receptor. Alternatively, for plant system features and/or site characteristics incapable of meeting the acceptance criteria of BTP 11- 6, the reviewer will evaluate proposed special design features applied in mitigating the effects of a postulated tank failure and determine whether such design features are adequate and