SALEM
SALEM STUDY SYSTEM
Systems > Waste Liquid

Waste Liquid

⚠️ DRAFT

Waste Liquid

Function

The liquid waste system collects, processes, monitors, and releases or recycles liquid radioactive waste. Sources include: equipment drains, floor drains, laundry, decontamination, and laboratory wastes. Processing includes filtration, demineralization, and evaporation. Processed water may be recycled or discharged after monitoring confirms activity levels are within limits. (UFSAR 11.2)

Solid Radwaste System

Processes and packages solid radioactive waste including spent resins, filter cartridges, dry active waste, and evaporator concentrates for storage and offsite disposal. (UFSAR 11.5)

Offsite Radiological Monitoring

Environmental monitoring program samples air, water, soil, vegetation, fish, and shellfish around the plant to verify that radiological releases are within regulatory limits. (UFSAR 11.6)

Tech Spec LCOs

Exam — 2019 Q43
21 CVCS Monitor Tank release path per S2.OP-SO.WL-0001 is via SW to CW (not SW only). 2FR1064 (RADWASTE OVERBOARD DISCH FLOW RECORDER) must be OPERABLE during the release — if 2FR1064 becomes inoperable, the crew is required to stop the release (per Step 5.5.8).
Exam — 2023 Q61
Liquid Radwaste Release (CVCS Monitor Tank): release path through CC Heat Exchanger and CW system. Only one circulator is required to be in service to allow a release to continue. The 1R18 radiation monitor does not isolate/close the 1WL51 overboard valve on loss of flow.
Exam — 2023 Q68
ODCM liquid effluent monitoring (3.3.8): loss of 2FR1064 flow recorder does NOT automatically close the 2WL51 overboard valve — loss of flow is not a design feature of the 2R18 process radiation monitor. Per ODCM Action 29, release may continue if effluent flow is estimated once per 4 hours.
Exam -- 2023 Q98
CVCS Monitor Tank release with 2R18 (Radioactive Liquid Effluent Monitor) inoperable: per S2.OP-SO.WL-0001, the SM/CRS authorizes the liquid radioactive waste release (not the Radiation Protection Manager). Per ODCM 3.3.8 Action 26, with 2R18 inoperable: at least two independent samples must be analyzed and at least two technically qualified members of staff must independently verify release rate calculations and discharge line valving. Trap: continuous surveys of discharge piping are performed for other reasons -- the ODCM requirement for inoperable 2R18 is two independent samples, not piping surveys.
Exam — 2020 Q90
2R18 detector failure (fails LOW): WL51 will NOT automatically close — only a HIGH alarm triggers WL51 closure. Per S2.OP-SO.WL-0001 (steps 2.3, 3.4, 3.5), if R18 is inoperable, FR1064 must remain OPERABLE AND two independent samples/calculations/lineups are required. The release procedure is more restrictive than the ODCM — ODCM allows flow rate estimation with FR1064 inoperable, but the procedure prevents both R18 and FR1064 from being inoperable at the same time.
Exam — 2020 Q72
Direct release of CVCS Monitor Tank to Circulating Water System: requires rotation of a potentially contaminated spectacle flange outside the RCA, which necessitates Radiation Protection support. Other evolutions (hydrogen recombiner operation, gas decay tank release, containment pressure relief) do NOT require RP support as their controls are in the control room area.
JPM — 2022 IP-k
Release of 21 CVCS MT via SW to CW per S2.OP-SO.WL-0001 Section 5.5: Maximum Release Rate 45 gpm (limited due to high activity content). Control flow using 2WR59 (MT PMPS OB STOP VALVE) and 21WR53 (MT RECIRC V) — throttling 21WR53 CLOSED diverts more flow overboard. If 2R18 Monitor ALARMS, immediately direct NCO to CLOSE 2WL51 (LIQUID RELEASE STOP VALVE). Tank volume from S2.OP-TM.ZZ-0002: at 90% level, volume is approximately 19500 gallons.
JPM — 2020 IP-k
Place 11 CVCS Monitor Tank in recirculation per S1.OP-SO.WL-0001 Section 5.1 (Unit 1): valve lineup via Attachment 1 — 11WR27 and 11WR31 OPEN, 12WR27 and 12WR31 CLOSED. Start 11 MT Pump, throttle 11WR53 to maintain 80 psig discharge. Calculate minimum recirculation time using S1.OP-TM.ZZ-0002 tank curve: 90% level = 19500 gallons. Formula: (Volume x 3) / 150 gpm = 6 Hrs 30 Min. Recirculation ensures the tank is homogeneously mixed before sampling — additions during recirculation invalidate the sample.
JPM — 2020 SRO-A4
Release path selection per S1.OP-SO.WL-0002: with Unit 2 circulators all OOS, 22 CCHX drained, and 12A Circulator C/T, candidate selects 21 CCHX to 12A AND/OR 12B CW Pumps as the release flow path for 12 CVCS Monitor Tank. Chemistry required minimum dilution flow of 100000 gpm. Key: must evaluate all available CCHXs and CW pump configurations to find a path with adequate dilution.

Liquid Waste System Tanks

Exam — 2018 Q38
Of the Radioactive Liquid Waste System tanks (RCDT, WHUTs, Chemical Drain Tank, Auxiliary Building Sump Tank), ONLY the RCDT has a physical connection to the Waste Gas Compressor Header. The RCDT cover gas is vented to the waste gas system for processing and holdup.
Exam — 2018 Q99
Per S2.OP-SO.WL-0001: if 2R18 (Waste Disposal Liquid Rad Monitor) is inoperable (e.g., failed source check), the CRS CAN approve the release permit provided a second sample was drawn, analyzed, and calculations were second verified prior to the release. The release does NOT require 2R18 to be repaired first. Trap: continuous effluent sampling throughout the discharge is NOT the compensatory action — the second independent sample/calculation is performed BEFORE the release, not during it.
JPM — 2018 IP-k
Release of 21 CVCS Monitor Tank via SW to CW (S2.OP-SO.WL-0001, R28): Maximum Release Rate = 45 gpm (high curie content). 2WR59 (MT PMPS OB STOP VALVE) located in Gas Stripper Feed Pump Room, 64 ft El. With 2WR59 fully open, flow only 5 gpm — throttle 21WR53 (MT RECIRC STOP VALVE) closed to raise discharge flow. If flow exceeds 45 gpm, open 21WR53 to reduce. Tank volume from S2.OP-TM.ZZ-0002: at 90% level = 19500 gallons. Dilution Flow Rate = 200000 gpm (2 CW circulators x 100000). 2R18 alarming at 105 cpm with High Radiation light → direct NCO to CLOSE 2WL51 (LIQUID RELEASE STOP VALVE).

Connections