ENS 53861
From kanterella
Jump to navigation
Jump to search
ENS Event | |
---|---|
00:04 Feb 6, 2019 | |
Title | Unit One Hpci System Inoperable Due to Blown Fuse |
Event Description | On February 5, 2019, at 1804 [CST], during a Unit 1 High Pressure Coolant Injection (HPCI) operability surveillance, a fuse blew in the logic for the motor speed changer for the turbine. The Unit 1 HPCI system was taken out of service for planned maintenance earlier in the day. The fuse issue was not related to any maintenance activities. Had HPCI been demanded, this fuse failure would not have allowed HPCI to reach its required speed. HPCI remains inoperable pending resolution of the issue. The Reactor Core Isolation Cooling (RCIC) system was confirmed operable. There were no other systems inoperable at the time of the event. HPCI had been last successfully tested on November 6, 2018.
This event is being reported as a condition that could have prevented fulfillment of a safety function in accordance with 10 CFR 50.72(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. The NRC Senior Resident Inspector has been notified. Inoperable HPCI places the unit in a 14 day Technical Specification Limiting Condition of Operability. |
Where | |
---|---|
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 | |
Time - Person (Reporting Time:+2.3 h0.0958 days <br />0.0137 weeks <br />0.00315 months <br />) | |
Opened: | Derek Drockelman 02:22 Feb 6, 2019 |
NRC Officer: | Jeffrey Whited |
Last Updated: | Feb 6, 2019 |
53861 - NRC Website | |
Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_53861&oldid=1279695"