Document: NUREG-0800
Document ID: 25e52c07-8f43-4a33-a908-01ec9eb02d06
Document Type: srp
Title: LIQUID WASTE MANAGEMENT SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1304/ML13044A644.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.2
CFR Part: 
CFR Title: 

Content:
ce with the guidelines of Interim Staff Guidance (ISG) DC/COL-ISG-06, “Final Interim Staff Guidance Evaluation and Acceptance Criteria for 10 CFR 20.1406 to Support Design Certification and Combined License Applications,” RG 4.21, and NEI 08-08A for liquids and liquid wastes produced during normal operation and AOOs. For plant designs with impoundment facilities and cooling ponds/canals through which LWMS radioactive effluents are discharged to unrestricted areas, description should address how engineered design features and leakage detection monitoring methods satisfying the regulatory requirements of specific Federal and state agencies also demonstrate compliance with 10 CFR 20.1406 and guidance of RG 4.21 in minimizing the contamination of plant discharge blowdown systems and the environment, including groundwater and surface water. The description should present a summary of design features that would prevent leakage and seepage out of impoundment facilities and cooling ponds/canals (e.g., design features of liners), and monitoring methods applied to detect leakage and seepage in underlying soils and aquifers (e.g., types, locations, and number of monitoring wells). 4. For processing subsystems equipped with automatic control features, the application should provide the justification for the placement of isolation dampers/valves and 11.2-14 Draft Revision 5 – August 2014 radiation detectors on process piping and effluent discharge lines to ensure the timely closure of such valves upon the detection of elevated radioactivity levels, and, if part of the design, controls in monitoring deviations of in-plant dilution flow rates and terminating releases or isolating process flows when deviations exceed preset limits. Other considerations may include determining whether system logic demands that a valve or damper should fail in the closed position in protecting the system from further contamination, terminating releases to the environment, or diverting process