ENS 48886
ENS Event | |
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14:53 Apr 3, 2013 | |
Title | Cooling Water Makeup Pump Failed to Start During a Surveillance Test |
Event Description | At 1053 [EDT] on April 3, 2013, during the performance of a surveillance test on the Division 2 Emergency Equipment Cooling Water (EECW) system the EECW system was declared inoperable due to the Division 2 EECW makeup pump failing to start during the surveillance. The EECW system cools various safety related components, including the High Pressure Coolant Injection (HPCI) room cooler.
A 14 day Limiting Condition for Operation (LCO) was entered for HPCI via [Technical Specification] LCO 3.5.1. Investigation into why the makeup pump did not start is currently in progress. This report is being made pursuant to 10 CFR 50.72 (b)(3)(v)(D) as a condition that at the time of discovery could have prevented the fulfillment of a safety function needed to mitigate the consequences of an accident, based on a loss of a single train safety system. The NRC Resident Inspector has been notified.
An evaluation of Event 48886 has determined that the Division 2 Emergency Cooling Water (EECW) system was capable of supporting HPCI Room Cooler and HPCI operation for a period of time in excess of that required to perform the required safety functions as assumed in the accident analysis. Therefore, this event is retracted. The licensee notified the NRC Resident Inspector. Notified the R3DO (Orth). |
Where | |
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Fermi ![]() Michigan (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+1.97 h0.0821 days <br />0.0117 weeks <br />0.0027 months <br />) | |
Opened: | Kelley Belenky 16:51 Apr 3, 2013 |
NRC Officer: | Pete Snyder |
Last Updated: | May 28, 2013 |
48886 - NRC Website
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Unit 2 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (65 %) |
After | Power Operation (65 %) |