ENS 52796
ENS Event | |
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17:47 Apr 10, 2017 | |
Title | Invalid System Actuation During Testing |
Event Description | This 60-day telephone notification is being made in accordance with the reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of several safety systems.
On April 10, 2017 at 1347 hours0.0156 days <br />0.374 hours <br />0.00223 weeks <br />5.125335e-4 months <br /> [EDT] with Unit 3 in Mode 6 during performance of the Train B Engineered Safeguards Integrated Test, safety system actuations occurred prior to the expected point in the test procedure when a loss of continuity resulted while the seismic clips were being removed from a fuse. The actuations were supposed to occur at a subsequent step when the fuse was to be pulled to actuate the Hi Containment Pressure signal. As a result, the following equipment actuated: 3B, 4A and 4B High Head SI pumps; 3B Containment Spray pump; Containment Isolation and Containment Ventilation Isolations; 3A and 3B Emergency Diesel Generators; Emergency Containment Coolers. Because an actual high containment pressure signal did not exist at the time of the actuation, the actuation is considered invalid. All equipment responded as expected. The NRC Resident Inspector has been notified. |
Where | |
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Turkey Point Florida (NRC Region 2) | |
Reporting | |
10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
Time - Person (Reporting Time:+1432.5 h59.688 days <br />8.527 weeks <br />1.962 months <br />) | |
Opened: | Mitch Guth 10:17 Jun 9, 2017 |
NRC Officer: | Steve Sandin |
Last Updated: | Jun 9, 2017 |
52796 - NRC Website
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WEEKMONTHYEARENS 527962017-04-10T17:47:00010 April 2017 17:47:00
[Table view]10 CFR 50.73(a)(1), Submit an LER Invalid System Actuation During Testing ENS 515472015-11-18T08:26:00018 November 2015 08:26:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of 3A Emergency Diesel Generator (Edg) ENS 505492014-10-01T20:56:0001 October 2014 20:56:00 10 CFR 50.73(a)(1), Submit an LER Two Invalid Specified System Actuations of Safety Injection ENS 490172013-03-11T04:43:00011 March 2013 04:43:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of the Auxiliary Feedwater System 2017-04-10T17:47:00 | |