Document: NUREG-0800
Document ID: 09e53ce5-bec3-4415-82d1-82ee125cb7c1
Document Type: srp
Title: describes the design acceptance criteria for the LWMS.  The classification of
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070720635.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.2
CFR Part: 
CFR Title: 

Content:
of the amounts of radioactive materials released in an unrestricted area, and provide reasonable assurance that the radiological consequences of the failure of an active component in the LWMS will not result in radionuclide concentrations in excess of the limits of Appendix B (Table 2, Column 2, under the unity rule) to 10 CFR Part 20 in the nearest source of potable water, located in an unrestricted area, and use of that water for direct and indirect human consumption, as described above. Section B, below, provides an acceptable approach in addressing the concerns outlined above. This position paper sets forth minimum requirements and does not prohibit the implementation of more rigorous design codes, standards, or quality assurance measures than those indicated in this BTP. Also, it does not require a re-evaluation of LWMS with limiting conditions or controls for operation based on more conservative analysis and calculational assumptions. B. BRANCH TECHNICAL POSITION The NRC staff will review the information describing the design features of the LWMS provided in the SAR, the DC application, update of the FSAR, or the COL application, to the extent not addressed in a referenced certified design, including the relevant parts of SRP Sections 2.4.1, 2.4.12, and 2.4.13 in accordance with Regulatory Guide 1.70 or 1.206. The reviewer will select and emphasize material from the procedures described below, as may be appropriate for a particular case. 1. Site Geology and Hydrology and Conceptual Transport Models The staff will review the site’s geologic and hydrologic features in assessing the potential consequences of a release radioactive materials associated with the failure of a tank and its components on current and likely future users of ground or surface water. The review of information on surface and ground water hydrology, parameters governing the movement of liquids and mobility of radioactivity through soils, and potential dilution in water is performed under