ENS 41743
ENS Event | |
|---|---|
04:33 Jun 3, 2005 | |
| Title | Declared Unusual Event Due to Rcs Leakage in Excess of Technical Specification Limit |
| Event Description | Declared Unusual Event due to RCS leakage greater than 10 gallons per minute. VCT level is lowering with constant plant temperature, pressure and pressurizer level. VCT level lowering at approximately 19 gallons per minute with associated rise in RWST level approximately 20 gallons per minute.
The licensee will notify the NRC Resident Inspector.
The licensee briefed NRC Management (McGinty, P. Hiland, R. Haag, J Munday) that the leakage was verified to be CVCS leakage and not RCS leakage. The leakage was stopped at 0055 and the licensee is evaluating termination/retraction criteria. NRC will not enter Monitoring Mode.
At 0055, leakage stopped. Leakage verified to be CVCS leakage, not RCS. The leakage is stopped. Validating no other anomalies exist then will evaluate termination and retraction of UE notification.
Notification of termination of Unusual Event at 0221. Plant validation complete. RCS gross leakage is 0.07 gallon per minute and plant parameters are stable. Leakage confirmed to be from CVCS system which has been isolated. The licensee will notify the NRC Resident Inspector. Notified R2DO (R. Haag), NRR EO (P. Hiland), IRD (T. McGinty), R2 (J. Munday), DHS (I. Lee), FEMA (C. Ligget), and DOE (M. Smith)
Event Notice 41743 reported declaration of an Unusual Event at 00:33 on 6/3/05 for RCS leakage in excess of Technical Specification Limits. The source of leakage was subsequently determined to be from the Chemical and Volume Control System (CVCS) and not from the RCS. The Unusual Event was terminated at 02:00 6/3/05 after the leak was isolated. This event is retracted since the source of the leakage was not from the RCS and upon further review the event did not meet reporting requirements. The NRC Resident Inspector was notified. RDO (Tom Decker), EO (M. Mayfield) and IRD (Peter Wilson) were notified |
| Where | |
|---|---|
Turkey Point  Florida (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.55 h-0.148 days <br />-0.0211 weeks <br />-0.00486 months <br />) | |
| Opened: | Grant Melin 01:00 Jun 3, 2005 |
| NRC Officer: | Bill Gott |
| Last Updated: | Jun 15, 2005 |
| 41743 - NRC Website
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Unit 4 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Standby (0 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 562642022-12-08T19:02:0008 December 2022 19:02:00
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