ENS 44296
ENS Event | |
|---|---|
16:06 May 31, 2008 | |
| Title | 60-Day Report Involving an Invalid Group II Primary Containment Isolation |
| Event Description | At 1206 On May 31, 2008, with the James A. FitzPatrick Nuclear Power Plant operating at 100% reactor power, Reactor Building (RB) Radiation Monitor 17RM-452A failed resulting in a Group II Primary Containment Isolation.
The failure resulted in actuation of the RB ventilation system isolation logic, start-up of the 'A- Standby Gas Treatment (SBGT) System, and a Half PCIS Group II Isolation. Operations department personnel verified that all expected isolations occurred and Radiation Protection verified that radiation levels in the Reactor Building were normal. The reactor remained at 100% power throughout the event. While the isolation signal was falsely generated by the failure of the Radiation Monitor the actuation logic functioned properly and the plant equipment responded as designed. There were no other equipment failures associated with this event and neither plant operation nor the health and safety of the public were affected by this event. The condition meets the reporting criteria of 10 CFR 50.73 (a)(2)(iv)(a) because the failure of the RB Radiation Monitor constitutes an invalid signal which resulted in a general Containment isolation signal affecting containment Isolation valves in more than one system ('A' SBGT, 'A' H2/02 Exosensors, 'A' Drywall Cam, 'A' Containment Atmosphere Dilution (CAD), 'A' PCP Vent and Purge). Since the signal was invalid this event meets the criteria in 10 CFR 50.73 (a)(1) for being reported as a 60-day phone call rather than as an LER. The event has been entered into the corrective action program and the resident inspector has been briefed. The results of the Equipment Failure Evaluation are not yet available. The licensee also notified the State of New York of this report. |
| Where | |
|---|---|
Fitzpatrick  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+309.68 h12.903 days <br />1.843 weeks <br />0.424 months <br />) | |
| Opened: | William A. Harrison 13:47 Jun 13, 2008 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Jun 13, 2008 |
| 44296 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 526452017-01-31T19:25:00031 January 2017 19:25:00
[Table view]10 CFR 50.73(a)(1), Submit an LER 60-Day Report Due to Invalid Eccs Actuation Signal ENS 514802015-08-23T16:42:00023 August 2015 16:42:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Optional Telephonic Notification of Invalid Primary Containment Isolation Signal ENS 491792013-05-10T05:41:00010 May 2013 05:41:00 10 CFR 50.73(a)(1), Submit an LER 60 Day Optional Telephonic Notification of Invalid Actuation of an Emergency Diesel Generator ENS 485812012-10-13T07:18:00013 October 2012 07:18:00 10 CFR 50.73(a)(1), Submit an LER 60 Day Report- Invalid Specified System Actuation ENS 485522012-10-02T14:37:0002 October 2012 14:37:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation Signal of the Primary Containment Isolation Level Transmitter ENS 446742008-10-14T16:06:00014 October 2008 16:06:00 10 CFR 50.73(a)(1), Submit an LER Faulty Voltage Regulator Causes Half Scram ENS 446732008-09-25T07:41:00025 September 2008 07:41:00 10 CFR 50.73(a)(1), Submit an LER Loose Connection Causes Half Scram While Shutdown ENS 442962008-05-31T16:06:00031 May 2008 16:06:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Report Involving an Invalid Group II Primary Containment Isolation ENS 433322007-04-12T10:20:00012 April 2007 10:20:00 10 CFR 50.73(a)(1), Submit an LER Primary Containment Isolation Due to Loss of Rps Power Supply ENS 429672006-09-08T23:28:0008 September 2006 23:28:00 10 CFR 50.73(a)(1), Submit an LER Half Scram Signal Due to Equipment Failure ENS 418782005-06-03T21:05:0003 June 2005 21:05:00 10 CFR 50.73(a)(1), Submit an LER Half Scram on Voltage Regulator Failure ENS 415552005-02-14T12:18:00014 February 2005 12:18:00 10 CFR 50.73(a)(1), Submit an LER Inadvertant Safety System Actuation During Maintenance ENS 412142004-10-08T01:55:0008 October 2004 01:55:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Report Due to an Invalid Actuation of Eccs and Edgs During Surveillance Activities ENS 411842004-10-07T07:44:0007 October 2004 07:44:00 10 CFR 50.73(a)(1), Submit an LER Invalid System Actuation 2017-01-31T19:25:00 | |