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:
the limiting event for the consequence analysis, given known plant process systems that are expected to contain radioactive materials • all systems with potential sources of radioactivity contained in tanks and components located outside of containment and outdoors where there is a potential for radioactive materials to reach the environment. Such systems include permanently installed processing equipment and skid-mounted processing systems connected to the permanently installed LWMS or solid waste management system, with and without due consideration for durable and passive mitigation features • types of failure mechanisms and descriptions of the types of durable and passive design features applied in mitigating the impacts of such releases • whether the event results in a prompt release to surface water or a delayed release to groundwater BTP 11-6-6 Revision 4 – January 2016 • conditions where surface water and groundwater could be impacted by a single event • radiological impacts on members of the public for a given point of entry located in unrestricted areas in surface water and groundwater resources The health physics staff will assess whether the applicant has: A. evaluated and ranked tanks and components in terms of radioactivity levels and radionuclide concentrations, B. considered whether the use of mobile skid-mounted processing systems located in readily accessible truck loading bays present a greater likelihood of failure and spills/leaks beyond the physical boundary of the building housing such equipment, and C. applied a graded approach to considering all types of events, radioactive source terms, design features (durable and passive) assumed in mitigating releases, and potential offsite impacts. For example, the volumes of liquid radioactive waste in tanks and components vary among plant systems. The LWMS tanks usually contain less liquid than condensate storage tanks and refueling water storage tanks. For LWMS, the amounts are typically