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:
exposure consequences to users of water resources, including long-lived fission and activation products and environmentally mobile radionuclides. The radionuclide concentrations and total inventory of radioactive materials is based on the expected failed fuel fraction, i.e., 0.12% of the fuel producing power in a pressurized water reactor (PWR) as per NUREG-0017, or consistent with an offgas release rate of 0.555 MBq/sec per MWt (15 ìCi/sec per MWt) after a 30-minute delay for a boiling water reactor (BWR) as per NUREG-0016. The radionuclide inventory in failed components is calculated based on the methods given in Chapter 4 and Appendices A and B of NUREG-0133, or by using equivalently documented techniques. The staff will confirm that the initial inventory of radioactive materials corresponds to the highest expected concentrations and inventory of radioactivity in systems and components used to process, treat, or store liquid and wet wastes products associated with normal operation and anticipated operational occurrences, The reviewer will determine whether the tank and its components, for which a failure is assumed, will result in the highest concentrations of radioactive materials at the nearest potable water supply located in an unrestricted area. 3. Mitigating Design Features The staff will determine whether the analysis has considered the use of design features, e.g., steel liners or walls in areas housing components, dikes for outdoor tanks, and overflow provisions incorporated to mitigate the effect of a postulated tank failure. The types of failed components are typically waste collector tanks or sample tank, among others. However, the components selected for the analysis should realistically reflect the specific design features of the plant, as described in Sections 11.2 and 11.4 of the application. The staff will coordinate this part of the evaluation with the organization responsible for the review of systems and components that are part of the balance