ENS 52510
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ENS Event | |
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02:36 Jan 26, 2017 | |
Title | High Pressure Core Spray System Diesel Room Fan Motor Failure |
Event Description | On January 25, 2017, at 1836 PST, smoke was detected in the High Pressure Core Spray System (HPCS) diesel room with no indication of a fire. Investigation found the motor starter coil for DMA-FN-32 (Diesel Mixed Air Fan 32), HPCS diesel generator room normal cooling fan, failed. This fan is required for operability of the switchgear that powers the HPCS pump. The HPCS pump is currently inoperable due to maintenance being performed on other support systems.
This condition is being reported under 10 CFR 50.72(b)(3)(v)(D) for an event or condition that could have prevented fulfillment of a safety function needed to mitigate the consequences of an accident. The licensee has notified the NRC Resident Inspector. |
Where | |
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Columbia ![]() Washington (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
LER: | 05000397/LER-2017-001 Regarding Contactor Coil Failure Results in Tripping of HPCS Diesel Mixed Air Fan |
Time - Person (Reporting Time:+0.58 h0.0242 days <br />0.00345 weeks <br />7.94484e-4 months <br />) | |
Opened: | Jeffery Kuether-Ulberg 03:11 Jan 26, 2017 |
NRC Officer: | Steven Vitto |
Last Updated: | Jan 26, 2017 |
52510 - NRC Website
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Unit 2 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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