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Exams > 2023 Q68 — Liquid Radwaste / ODCM / 2FR1064 Flow Recorder

2023 Q68 — Liquid Radwaste / ODCM / 2FR1064 Flow Recorder

⚠️ DRAFT
Q68 — Liquid Radwaste / ODCM / 2FR1064 Flow Recorder T3 G2.3.11 (3.8)
Given:
- Salem Unit 2 is at 100% power
- Release of 21 CVCS Monitor Tank is in progress per S2.OP-SO.WL-0001, Release of Radioactive Liquid Waste from 21 CVCS Monitor Tank

Then:
- 2FR1064, Radwaste Overboard Discharge Flow Recorder, fails low

Which of the following completes both statements?

1. Based on the above condition, the 2WL51, Overboard Valve, (1) automatically close.
2. Per the ODCM with 2FR1064 Flow recorder inoperable, the release (2) .
A. (1) will (2) may recommence if effluent flows are estimated once per 4 hours.
B. (1) will NOT (2) may NOT recommence unless 2FR1064 is OPERABLE
C. (1) will (2) may NOT recommence unless 2FR1064 is OPERABLE
D. (1) will NOT (2) may recommence if effluent flows are estimated once per 4 hours.
▶ Show Answer & Explanation
✓ D. Correct. Loss of discharge flow is not a design feature associated with the 2R18 process radiation monitor. Some process radiation monitors do have a feature that when programmed will isolate the process on low of flow. Per ODCM bases for liquid effluent (3.3.8), the controls and monitoring are determined to ensure that the 10 CFR 20 limits are not exceeded. Per Action 29 of the ODCM for an inoperable liquid radwaste effluent line monitor, the release may continue provided effluent flow is estimated once per 4 hours.
✗ A. Plausible because the operator may believe that a low flow condition will automatically close the 2WL51. Incorrect in that loss of flow is not an enabled design feature with the radiation monitor.
✗ B. Plausible because the operator may believe that the procedure requires both 2R18 and 2FR1064 operable in order to recommence the release and satisfy the requirements of the ODCM.
✗ C. Plausible because the operator may believe that a low flow condition will automatically close the 2WL51. Plausible because the operator may believe that the procedure requires both 2R18 and 2FR1064 operable in order to recommence the release and satisfy the requirements of the ODCM.
Ref: ODCM (R29), S2.OP-SO.WL-0001 (R32) | LO: NOS05CONDOP-14, Objective 5. Describe requirements for the following Control Room or Field Activities in accordance with applicable Conduct of Operations Manual Administrative Procedures | Source: Bank - Salem | Cognitive: Fundamental/Memory

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