ENS 41214
ENS Event | |
|---|---|
01:55 Oct 8, 2004 | |
| Title | 60-Day Report Due to an Invalid Actuation of Eccs and Edgs During Surveillance Activities |
| Event Description | The purpose of this report is to provide a telephone notification under 10CFR50.73(a)(2)(iv)(A) for an invalid actuation of the Emergency Core Cooling Systems and the Emergency AC Electrical Power Systems. As allowed by 10CFR50.73(a)(1) this notification is being made via an ENS phone call.
On October 7, 2004, James A. Fitzpatrick (JAF) was in a refueling outage with the reactor cavity flooded and the spent fuel pool gates removed. At approximately 2055, during the performance of an instrument surveillance procedure (ISP-5-7) for 'Remote Shutdown Reactor Vessel Pressure Indicator Calibration' a pressure perturbation was introduced to the sensing lines while returning 02-3PI-60A to service. The pressure perturbation resulted in an invalid actuation of the Emergency Core Cooling Systems (ECCS) and Emergency Diesel Generator (EDG) initiation logic. The initiation logic functioned as designed, 'A' and 'B' Core Spray Pumps and 'A', 'B', 'C', and 'D' RHR pumps started and injected into core, and EDGs 'A', 'B', 'C' and 'D' started but did not close to the emergency buses since there was no loss of off site power. Operations personnel verified plant conditions, secured ECCS injection and secured the EDGs. The event was entered in the plant corrective action program via Condition Report CR-JAF-04-04457. Preliminary investigation has identified valve manipulation to restore pressure indicator 02-3PI-60A to service as the cause of a pressure perturbation in a shared sensing line, which caused the level transmitters sharing the same line to detect a low reactor water level condition. All systems that actuated operated per their design. As a result of the injection, water overflowed to the skimmer surge tanks and into the reactor building drain system as designed, resulting in contamination of sections of the reactor building. No personnel contaminations or unexpected exposures occurred as a result. A recovery plan was developed and implemented to minimize the impact and to recover the affected plant areas. In addition, signals were received for HPCI and RCIC initiation, SBGT initiation, Recirc pump trip and Alternate Rod Insertion (ARI). Due to outage activities, these systems were removed from service and protective tagged, and thus the systems did not respond. Although not required by 10 CFR 50.73 JAF will submit a voluntary LER to address this event in greater detail. The NRC Sr. Resident Inspector was notified. The licensee also informed the State of New York. |
| Where | |
|---|---|
Fitzpatrick  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1091.72 h45.488 days <br />6.498 weeks <br />1.495 months <br />) | |
| Opened: | Andy Halliday 14:38 Nov 22, 2004 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Nov 22, 2004 |
| 41214 - NRC Website | |
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 | |