ENS 43142
ENS Event | |
|---|---|
12:07 Feb 5, 2007 | |
| Title | Unusual Event Declared Due to Low Service Water Intake Level |
| Event Description | Licensee provided the following details via facsimile on 02/05/05 at 1305 EST:
On February 5, 2007, at approximately 05:30 hours, the control room received an alarm for 'intake structure or traveling screen trouble alarm,' and a nuclear plant operator was dispatched to investigate the condition. At approximately 05:57 hours, the control room was notified that the alarm was due to low screen wash pressure on all traveling water screens as a result of the all screen wash pumps found tripped. Review of the Emergency Plan (EP) determined that Emergency Action Level (EAL) 8.4.3, 'Service Water Level 4 Feet, 5 Inches Below Mean Sea Level, 'was met and entry into an Notification of Unusual Event (NUE) was required. At approximately 07:07 hours, operations entered an NUE for EP EAL 8.4.3. Further investigation and corrective action are in progress. At approximately 07:24 hours, the NRC Emergency Operations Center was notified of the NUE (Jeff Rotton). Licensee reported entering EAL 8.4.3 - Service Water Bay Level < 4 feet 5 inches below mean sea level. There are presently no other open LCOs that impact Service Water operability. The licensee notified the NRC Resident Inspector.
The licensee terminated the Unusual Event at 1014 based on the fact that: (a) Service Water Bay Levels had increased to 1 ft below mean sea level and were rising, (b) The licensee initiated cleaning of the trash rack for the intake structure, and (c) the time for an unusually low tide was now passed. The licensee notified the NRC Resident Inspector. Notified R1DO (Cahill), IRD Mgr (Leach), NRR EO (Ross-Lee), DHS (T. Barnes), FEMA (C. Liggett), and R4 (L. Howell). |
| Where | |
|---|---|
Indian Point  New York (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-4.72 h-0.197 days <br />-0.0281 weeks <br />-0.00647 months <br />) | |
| Opened: | John Graham 07:24 Feb 5, 2007 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Feb 5, 2007 |
| 43142 - NRC Website | |
Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |