ENS 52758
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ENS Event | |
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00:18 May 16, 2017 | |
Title | High Pressure Coolant Injection System Declared Inoperable |
Event Description | On May 15, 2017 at 1918 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.29799e-4 months <br /> [CDT], Unit Two High Pressure Coolant Injection (HPCI) Minimum Flow Valve MO 2-2301-14 failed to open as required by procedure and HPCI was declared inoperable. When the HPCI Turbine was tripped, the Minimum Flow Valve did not open when system flow reduced to the low flow setpoint. This event is being reported as a condition that could have prevented fulfillment of a safety function in accordance with 10CFR50.72(b)(3)(v)(D). The HPCI system is a single train system and the loss of HPCI could impact the plant's ability to mitigate the consequences of an accident. In accordance with Technical Specification 3.5.1 Condition G, the Reactor Core Isolation Cooling (RCIC) system was confirmed operable.
This places the plant in a 14-day LCO action statement. The licensee has notified the NRC Resident Inspector. |
Where | |
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Quad Cities ![]() Illinois (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
LER: | 05000265/LER-2017-001 |
Time - Person (Reporting Time:+0.15 h0.00625 days <br />8.928571e-4 weeks <br />2.0547e-4 months <br />) | |
Opened: | Doug Ashton 00:27 May 16, 2017 |
NRC Officer: | Howie Crouch |
Last Updated: | May 16, 2017 |
52758 - 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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