ENS 42477
ENS Event | |
|---|---|
03:59 Feb 8, 2006 | |
| Title | Invalid System Actuations |
| Event Description | The following 60-day report is being made under 50.73 (a)(2)(iv)(A) for an invalid actuation of Division 1 containment isolation valves that occurred at 2259 hours0.0261 days <br />0.628 hours <br />0.00374 weeks <br />8.595495e-4 months <br /> on February 7, 2006. As allowed by 10CFR50.73(a)(1) this notification is being made via telephone. NUREG-1022, Revision 2 identifies the information that needs to be reported as follows:
(a) The specific train(s) and system(s) that were actuated. An unexpected actuation of Division 1 containment isolation relays occurred during performance of WO 416930-02, EM - Agastat Relay Luayvg514b Replacement in panel 1H13P861. Momentary, inadvertent contact occurred between the top row R1-M1 pins of the Agastat relay being inserted and the second row T1-B1 contacts of the installed relay base while the Electrical Technician was attempting to align the relay for seating, prior to applying full seating force to the relay. The relay actuations resulted in closure of Division 1 isolation valves in the Fuel Pool Cooling and Cleanup, Suppression Pool Cooling and Cleanup, Component Cooling Water, Service Air, Containment and Drywell Equipment and Floor Drains, and Makeup Condensate systems. (b) Whether each train actuation was complete or partial. The actuations were complete for the portions that were enabled while relay testing was in progress. (c) Whether or not the system started and functioned successfully. There no system starts associated with this event The NRC Resident Inspector was notified of this notification. |
| Where | |
|---|---|
Clinton  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1357.13 h56.547 days <br />8.078 weeks <br />1.859 months <br />) | |
| Opened: | Pat Ryan 16:07 Apr 5, 2006 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Apr 5, 2006 |
| 42477 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
WEEKMONTHYEARENS 528622017-05-18T16:15:00018 May 2017 16:15:00
[Table view]10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Emergency Diesel Generator ENS 512082015-05-11T06:19:00011 May 2015 06:19:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of the Division 2 Emergency Diesel Generator ENS 504522014-07-26T21:48:00026 July 2014 21:48:00 10 CFR 50.73(a)(1), Submit an LER Invalid Specified System Actuation ENS 475872011-12-04T12:09:0004 December 2011 12:09:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Containment Isolation Signals and an Emergency Service Water Pump ENS 459012010-03-15T06:38:00015 March 2010 06:38:00 10 CFR 50.73(a)(1), Submit an LER Optional 60-Day Report of Invalid Specified System Actuation ENS 425952006-03-26T08:47:00026 March 2006 08:47:00 10 CFR 50.73(a)(1), Submit an LER 60 Day Notification - Invalid Actuation of High Pressure Core Spray Pump ENS 424772006-02-08T03:59:0008 February 2006 03:59:00 10 CFR 50.73(a)(1), Submit an LER Invalid System Actuations ENS 418212005-05-12T20:48:00012 May 2005 20:48:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of the Division 2 Shutdown Service Water (Sx) System Pump. 2017-05-18T16:15:00 | |