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:
adequate 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 Degraded effluent line piping Inadequate pipe design Coolant Tower Blowdown Line Cooling tower blowdown line leak due to failure in piping. Inadequate pipe design Turbine and Waste Treatment Building Sump Discharge Line Line leaked due to degraded condition of pipe Inadequate pipe design Underground pipe containing Uranium Bearing Discharge Pipe ruptured underground and might have been undetected for years. Inadequate pipe design/maintenance Sumps Clean Sumps Steam Leaks condensed and ran into clean sumps which were routed to storm drain pond. Inadequate maintenance Steam Lines Auxiliary Steam Lines Steam and liquid leaks through seals, joints, and degraded pipes. Inadequate maintenance Retention Ponds Unlined Storm Drain Stabilization Pond (SDSP) Tritium was found in two man holes located close to an unlined SDSP. The storm drain collector basin received overflow from the Turbine Building air-wash system, which contained small amounts of tritium Inadequate design A-8 SSC Occurrence Problem Operating Practices Boric acid concentrator system (evaporator system) releases Past operational practices during releases during rainy days from the system resulting in rain deposition and wash down of roof drains. Inadequate operator procedures Condensate transfer System Liquid discharged from circulating water discharge tunnel via fire protection system and a portion of the service water system due to operator error. Procedure Compliance Outdoor storage of contaminated equipment Contamination leached from equipment onto soil. Inadequate procedures or operational controls Condensate Storage Tank Water overflowed from Condensate Storage Tank into a tunnel. Tunnel had potential to allow small amount of this water to permeate into the ground. Inadequate procedures Retention tank