ENS 40833: Difference between revisions
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| event date = 06/22/2004 09:00 EDT | | event date = 06/22/2004 09:00 EDT | ||
| last update date = 06/22/2004 | | last update date = 06/22/2004 | ||
| title = High Presure Coolant Injection System Inoperable Due | | title = High Presure Coolant Injection System Inoperable Due to Maintenance | ||
| event text = On June 21, 2004, at approximately 0830 hours, testing of High Pressure Coolant Injection (HPCI) system instrumentation commenced per Maintenance Surveillance Test 2MST-HPC128R, 'HPCI Reactor Water Level Channel Calibration And Functional Test.' At 0900 hours, it was determined that the instrumentation would require corrective maintenance and Technical Specifications (TS) Limiting Condition for Operation (LCO) 3.3.5.1, 'Emergency Core Cooling System (ECCS) Instrumentation,' Condition C was entered for HPCI system Reactor Vessel Water Level - High instrument channel 2-B21-LTN017B-2. Required Action C.2 of TS LCO 3.3.5.1 provides 24 hours for the channel to be returned to operable status. On June 22, 2004, at 0900 hours, the instrument channel was not returned to operable status due to continuing maintenance activities to calibrate the channel. Therefore, Condition G of TS LCO 3.3.5.1 (Required Action and associated Completion Time of Condition C not met) was entered and the High Pressure Coolant Injection (HPCI) system was declared inoperable in accordance with TS LCO 3.3.5.1 Required Action G.1. | | event text = On June 21, 2004, at approximately 0830 hours, testing of High Pressure Coolant Injection (HPCI) system instrumentation commenced per Maintenance Surveillance Test 2MST-HPC128R, 'HPCI Reactor Water Level Channel Calibration And Functional Test.' At 0900 hours, it was determined that the instrumentation would require corrective maintenance and Technical Specifications (TS) Limiting Condition for Operation (LCO) 3.3.5.1, 'Emergency Core Cooling System (ECCS) Instrumentation,' Condition C was entered for HPCI system Reactor Vessel Water Level - High instrument channel 2-B21-LTN017B-2. Required Action C.2 of TS LCO 3.3.5.1 provides 24 hours for the channel to be returned to operable status. On June 22, 2004, at 0900 hours, the instrument channel was not returned to operable status due to continuing maintenance activities to calibrate the channel. Therefore, Condition G of TS LCO 3.3.5.1 (Required Action and associated Completion Time of Condition C not met) was entered and the High Pressure Coolant Injection (HPCI) system was declared inoperable in accordance with TS LCO 3.3.5.1 Required Action G.1. | ||
TS LCO 3.5.1. "ECCS - Operating," Condition D was entered for the HPCI system being declared inoperable. The Reactor Core Isolation Cooling (RCIC) system was verified operable per Required Action D.1. Required Action D.2 of TS LCO 3.5.1 requires the HPCI system to be returned to operable status within 14 days. The [NRC] Resident Inspector has been notified. | TS LCO 3.5.1. "ECCS - Operating," Condition D was entered for the HPCI system being declared inoperable. The Reactor Core Isolation Cooling (RCIC) system was verified operable per Required Action D.1. Required Action D.2 of TS LCO 3.5.1 requires the HPCI system to be returned to operable status within 14 days. The [NRC] Resident Inspector has been notified. | ||
Latest revision as of 21:23, 1 March 2018
| Where | |
|---|---|
Brunswick  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+2.42 h0.101 days <br />0.0144 weeks <br />0.00331 months <br />) | |
| Opened: | Michael Potter 15:25 Jun 22, 2004 |
| NRC Officer: | Jeff Hixon |
| Last Updated: | Jun 22, 2004 |
| 40833 - NRC Website
| |
Brunswick with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |