Document: NUREG-0800
Document ID: 968e9bbe-e8ca-4639-a8d2-f96483377bae
Document Type: srp
Title: - 12.4
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1219/ML12191A219.pdf
Revision Date: 2023-06
Chapter: 12
Section ID: 12.3
CFR Part: 
CFR Title: 

Content:
ndix 12.3-12.4-A Attachment B Examples of Systems, Structures, and Components for 20.1406 Review The list below provides examples of typical SSCs that typically have a potential to release radioactive material to the facility, site, or environment. Additional operating experience is provided as background information. This list is not intended to be complete and comprehensive, nor is it intended to be a checklist of minimally acceptable facility design features. • Spent Fuel Storage and Transfer Systems • Spent Fuel Pool (SFP) • SFP Transfer Canal • SFP Leak Detection System • Tanks and Piping • Radioactive Waste Tanks and Piping • Condensate Storage Tank and Piping • High-Pressure Coolant Injection (HPCI) and Emergency Service Water Piping • Refueling Water Storage Tank • Service Water and Component Cooling • Auxiliary Steam Lines • Cooling Tower Blowdown Line • Circulating water system piping • Retention Tanks • Discharge Canals and Piping (including air relief valves on lines) • Drains • Water Treatment System Drains • Floor and Roof Drains • Laundry System Drains • Contaminated Sink Drains • Secondary Systems • Plant Chilled Water System • Cooling Tower Basin • Radioactive Waste Systems • Waste Disposal System Valves • Resin Fill Valve • Retention Ponds • Building • Building Sumps • Seismic Gaps • Joints Appendix 12.3-12.4-A Attachment C Operating Experiences for Review A-7 Attachment C SSC Occurrence Problem Piping Non-safety, HPCI suction and return piping Underground Pipe Leakage Inadequate pipe design/maintenance Condensate Tank, Condensate transfer system (underground pipe) Degraded pipe caused leak. Liquid traveled outside the protected area via an underground telephone cable conduit run. Inadequate pipe design/maintenance Turbine Building Sump Discharge Line Frozen end of discharge line caused liquid to backup and leak. No freeze protection Radioactive Waste liquid Effluent release pipe