ENS 49189
ENS Event | |
|---|---|
04:29 Jul 15, 2013 | |
| Title | Unusual Event Declared Due to Loss of Control Room Annunciators |
| Event Description | The licensee declared a Notice of Unusual Event resulting from a loss of control room annunciators for greater than 15 minutes. The EAL Condition is SU 4.1. Compensatory measures have been established per Abnormal Operating Procedures. The plant continues to operate at 100 percent power.
The licensee has called for support staff to troubleshoot the issue. No other major components are out of service. The licensee has notified the NRC Resident Inspector. Notified DHS SWO, FEMA, DHS NICC and the Nuclear SSA via email.
Annunciator indication has returned for some time and appears to be working. Engineering and electrical instrumentation and control staff are onsite to troubleshoot but have not established any cause. The licensee remains in the Unusual Event until additional confidence can be established in annunciator indication. Notified R1DO (Cook).
The NOUE declared on July 15, 2013 at 0029 EDT hours due to loss of main control room annunciation was terminated on July 16, 2013 at 2310 EDT hours when the annunciation system was declared functional. Plant personnel and vendors have completed diagnostic checks and testing, system voltages are normal, and the annunciator system is working normally. The licensee has notified the NRC Resident Inspector. Notified R1DO (Gray), NRR EO (Hiland), IRD MOC (Grant), DHS SWO, FEMA, DHS NICC and the Nuclear SSA via email. |
| Where | |
|---|---|
| Pilgrim Massachusetts (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.52 h-0.147 days <br />-0.021 weeks <br />-0.00482 months <br />) | |
| Opened: | Kevin O'Rourke 00:58 Jul 15, 2013 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Jul 17, 2013 |
| 49189 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Pilgrim with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | |
WEEKMONTHYEARENS 491892013-07-15T04:29:00015 July 2013 04:29:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Loss of Control Room Annunciators ENS 487362013-02-09T03:00:0009 February 2013 03:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Loss of Offsite Power ENS 486692013-01-12T14:50:00012 January 2013 14:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Potential Security Event ENS 446112008-10-30T00:50:00030 October 2008 00:50:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Fire in Hp Calibration Lab 2013-07-15T04:29:00 | |