ENS 47745: Difference between revisions
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| event date = 03/14/2012 20:34 EDT | | event date = 03/14/2012 20:34 EDT | ||
| last update date = 03/15/2012 | | last update date = 03/15/2012 | ||
| title = Hpci Inoperable Due | | title = Hpci Inoperable Due to Failure of Turbine Governor Valve | ||
| event text = On March 14th, 2012 at 2034 EST the High Pressure Coolant Injection System (HPCI) was declared inoperable due to a failure of the turbine governor valve to respond as expected to demanded position. With the HPCI system flow controller output signal at zero percent demand the governor valve traveled to the mid position and did not remain closed as expected when the oil system auxiliary pump was started. With this unexpected response the speed and flow control system for the turbine is inoperable. The failure was discovered as part of a planned evolution for oil sampling. | | event text = On March 14th, 2012 at 2034 EST the High Pressure Coolant Injection System (HPCI) was declared inoperable due to a failure of the turbine governor valve to respond as expected to demanded position. With the HPCI system flow controller output signal at zero percent demand the governor valve traveled to the mid position and did not remain closed as expected when the oil system auxiliary pump was started. With this unexpected response the speed and flow control system for the turbine is inoperable. The failure was discovered as part of a planned evolution for oil sampling. | ||
All other Emergency Core Cooling Systems and the Reactor Core Isolation Cooling (RCIC) system remain operable. | All other Emergency Core Cooling Systems and the Reactor Core Isolation Cooling (RCIC) system remain operable. |
Latest revision as of 22:04, 1 March 2018
Where | |
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Hope Creek ![]() New Jersey (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:+3.63 h0.151 days <br />0.0216 weeks <br />0.00497 months <br />) | |
Opened: | Kenneth Breslin 04:12 Mar 15, 2012 |
NRC Officer: | Charles Teal |
Last Updated: | Mar 15, 2012 |
47745 - NRC Website
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