ENS 40600: Difference between revisions
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| event date = 03/19/2004 14:08 EST | | event date = 03/19/2004 14:08 EST | ||
| last update date = 04/14/2004 | | last update date = 04/14/2004 | ||
| title = Hpci System Declared Inoperable | | title = Hpci System Declared Inoperable at Limerick 1 Due to a Broken Hand Switch | ||
| event text = On 3/19/04 at 14:08 PM EST, the Unit-1. HPCI system was declared inoperable due to a hand-switch failure, which prevented main control room operation of the HV-055-1F0O1 HPCI steam admission valve. The system had just successfully completed its functional surveillance test and the switch broke resulting in the operators using an, alternate means to shutdown the HPCI system. The steam admission valve is not a PCIV. The valve was open all the time; the system was shutdown using an alternate procedure. The system is now blocked for hand-switch replacement. This report is being made pursuant to 10CFR50.72(b)(3)(v) for failure of a single train accident mitigation system. | | event text = On 3/19/04 at 14:08 PM EST, the Unit-1. HPCI system was declared inoperable due to a hand-switch failure, which prevented main control room operation of the HV-055-1F0O1 HPCI steam admission valve. The system had just successfully completed its functional surveillance test and the switch broke resulting in the operators using an, alternate means to shutdown the HPCI system. The steam admission valve is not a PCIV. The valve was open all the time; the system was shutdown using an alternate procedure. The system is now blocked for hand-switch replacement. This report is being made pursuant to 10CFR50.72(b)(3)(v) for failure of a single train accident mitigation system. | ||
The NRC Resident inspector was notified. Operators entered the unit into a 14 day LCO for declaring HPCI system inoperable. | The NRC Resident inspector was notified. Operators entered the unit into a 14 day LCO for declaring HPCI system inoperable. | ||
Latest revision as of 22:23, 1 March 2018
| Where | |
|---|---|
Limerick  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:+1.87 h0.0779 days <br />0.0111 weeks <br />0.00256 months <br />) | |
| Opened: | Dan Semeter 21:00 Mar 19, 2004 |
| NRC Officer: | Rich Laura |
| Last Updated: | Apr 14, 2004 |
| 40600 - NRC Website
| |
Limerick with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |