ENS 55224
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ENS Event | |
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03:54 Apr 30, 2021 | |
Title | High Pressure Coolant Injection (Hpci) Declared Inoperable |
Event Description | On 4/29/21 at 2354 [EDT], an alarm was received for U2 HPCI Inverter Power Failure. [It was] identified that the High Pressure Coolant Injection (HPCI) flow controller had lost power due to a failure of an inverter. Without the flow controller, HPCI would not auto start to mitigate the consequences of an accident; thus, HPCI was declared inoperable. All other emergency core cooling systems and reactor core isolation cooling (RCIC) system remain operable.
HPCI is a single train system with no redundant equipment in the same system; therefore, this failure is reportable as an event or condition that could have prevented fulfillment of a safety function needed to mitigate the consequences of an accident per 10CFR50.72(b)(3)(v)(d). The NRC Resident has been informed of this notification. |
Where | |
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Peach Bottom Pennsylvania (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+3.73 h0.155 days <br />0.0222 weeks <br />0.00511 months <br />) | |
Opened: | Matthew George 07:38 Apr 30, 2021 |
NRC Officer: | Ossy Font |
Last Updated: | Apr 30, 2021 |
55224 - NRC Website
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Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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