ENS 51545
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ENS Event | |
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05:55 Nov 18, 2015 | |
Title | High Pressure Core Spray Declared Inoperable |
Event Description | At 2355 (CST) on 11/17/2015, River Bend Station declared the High Pressure Core Spray [HPCS] system inoperable in accordance with Technical Specification 3.8.9, Condition E (Declare HPCS system and Standby Service Water System Pump 2C inoperable immediately) due to Division 1 Control Room Air Conditioning System HVK-CHL1C being inoperable because of a significant Freon leak on SWP-PVY32C.
Actions taken to exit LCO: Alternated divisions of Control Room Air Conditioning System to Division 2 HVK-CHL1D in service and Division 1 HVK-CHL1A in standby. The basis for declaring High Pressure Core Spray inoperable was that the control room chiller also chills the switchgear room that supplies power to the HPCS. HPCS was out of service for less than one hour while the chillers were swapped from Division 1 to Division 2. The licensee has notified the NRC Resident Inspector. |
Where | |
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River Bend Louisiana (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+2.83 h0.118 days <br />0.0168 weeks <br />0.00388 months <br />) | |
Opened: | Robert Melton 08:45 Nov 18, 2015 |
NRC Officer: | Howie Crouch |
Last Updated: | Nov 18, 2015 |
51545 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (71 %) |
After | Power Operation (71 %) |
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