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
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Content:
s ANSI/ANS 2007 and NEI 08-08A in considering the incorporation of specific design features. Based on this information, the staff will determine if the analysis can take credit for the proposed design features. In cases where mitigating design features of tanks meet the conditions of the guidance, the staff may waive the need for a consequence analysis in the context of SRP Section 11.2 and BTP 11-6 since the use of durable and passive design features would provide reasonable assurance that the SRP acceptance criteria would be met and, thus, NRC requirements. The presence of mitigating design features does not change the guidance in SRP Section 2.4.12 that relates to demonstrating the adequacy of the site’s hydrogeologic properties via a consequence analysis that uses combined literature data and site- specific parameters characterizing transport mechanisms, such as aquifer materials, hydraulic conductivity, and porosity, etc. (See SRP Section 2.4.13 for details on the type of information and site data that would be acceptable for characterizing the hydrogeologic properties of a site and staff’s approach in evaluating the information provided by the applicant.) 3. Radioactive Source Term The health physics staff will review the proposed radionuclide distributions and concentrations assumed for the postulated failure of a tank and components using the information presented by the applicant in instances where credit for durable and passive design features is not applied in mitigating the impacts of such releases. Conceptually, the analysis assumes that a system or component fails to meet the design bases as required by 10 CFR 50.34a or 10 CFR 52.79, and GDC 60, GDC 61 and GDC 64. The staff will evaluate the basis and assumptions used in developing the source term, radionuclide distributions and concentrations to ensure that the highest potential radioactive material inventory is selected among the expected types of liquid and wet waste streams processed by plant