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During the performance of planned Unit 3 " … During the performance of planned Unit 3 "High Pressure Coolant Injection (HPCI) Pump, Valve, Flow and Unit Cooler Functional and In-Service Testing" the HPCI turbine exhaust line drain valve remained open for longer than expected. The test was aborted and troubleshooting was initiated to determine the cause of this unexpected result. The HPCI system is being maintained in an available status but maintained Tech. Spec. inoperable pending additional evaluation.</br>The licensee notified the NRC Resident Inspector.</br>* * * UPDATE AT 1408 EST ON 1/14/04 FROM DAVE FOSS TO S. SANDIN * * * </br>The licensee is retracting this report based on the following:</br>The purpose of this notification is to retract a previous report made on 12/16/03 at 1540 hours (EN# 40394). Notification of the event to the NRC was initially made as a result of declaring the Unit 3 High Pressure Coolant Injection (HPCI) system inoperable when unexpected conditions were found during performance of routine Inservice Testing of HPCI. Specifically, during an Inservice Test of a check valve associated with the leak off collection and transfer subsystem of HPCI, it was noted that additional leak-off inventory was being collected in the HPCI gland seal condenser than what had been noted during other tests. At the time, concern existed as to whether excessive condensate existed on the steam side of HPCI and therefore, HPCI may not be able to perform its safety function. HPCI was considered available, but Technical Specification inoperable.</br>Since the initial report, Engineering has determined that HPCI was fully capable of performing its safety function. The additional condensate inventory observed relative to other tests previously performed was due to the results of a revision to the test approved on 1/23/03. This revision re-ordered the sequence of stroking various HPCI related valves. Although this re-sequencing was an overall enhancement to the test quality, it resulted in the potential for additional condensate inventory existing in the leak-off collection and transfer subsystem depending on system conditions. Since the HPCI steam supply valve (MO-14) is now stroked earlier in the test, there resulted a condition where additional leak-off condensation could collect in the leak off collection and transfer subsystem. Appropriate testing and analysis was performed on this subsystem and it was verified that it was operating properly to remove condensate from the steam side of HPCI. The unexpected condition found during the test has been entered into the site-specific corrective action program for resolution (CR 191222). The NRC resident has been informed of the retraction.</br>Notified R1DO(Holody). of the retraction.
Notified R1DO(Holody).
20:40:00, 16 December 2003 +
19:11:00, 16 December 2003 +
20:40:00, 16 December 2003 +
During the performance of planned Unit 3 " … During the performance of planned Unit 3 "High Pressure Coolant Injection (HPCI) Pump, Valve, Flow and Unit Cooler Functional and In-Service Testing" the HPCI turbine exhaust line drain valve remained open for longer than expected. The test was aborted and troubleshooting was initiated to determine the cause of this unexpected result. The HPCI system is being maintained in an available status but maintained Tech. Spec. inoperable pending additional evaluation.</br>The licensee notified the NRC Resident Inspector.</br>* * * UPDATE AT 1408 EST ON 1/14/04 FROM DAVE FOSS TO S. SANDIN * * * </br>The licensee is retracting this report based on the following:</br>The purpose of this notification is to retract a previous report made on 12/16/03 at 1540 hours (EN# 40394). Notification of the event to the NRC was initially made as a result of declaring the Unit 3 High Pressure Coolant Injection (HPCI) system inoperable when unexpected conditions were found during performance of routine Inservice Testing of HPCI. Specifically, during an Inservice Test of a check valve associated with the leak off collection and transfer subsystem of HPCI, it was noted that additional leak-off inventory was being collected in the HPCI gland seal condenser than what had been noted during other tests. At the time, concern existed as to whether excessive condensate existed on the steam side of HPCI and therefore, HPCI may not be able to perform its safety function. HPCI was considered available, but Technical Specification inoperable.</br>Since the initial report, Engineering has determined that HPCI was fully capable of performing its safety function. The additional condensate inventory observed relative to other tests previously performed was due to the results of a revision to the test approved on 1/23/03. This revision re-ordered the sequence of stroking various HPCI related valves. Although this re-sequencing was an overall enhancement to the test quality, it resulted in the potential for additional condensate inventory existing in the leak-off collection and transfer subsystem depending on system conditions. Since the HPCI steam supply valve (MO-14) is now stroked earlier in the test, there resulted a condition where additional leak-off condensation could collect in the leak off collection and transfer subsystem. Appropriate testing and analysis was performed on this subsystem and it was verified that it was operating properly to remove condensate from the steam side of HPCI. The unexpected condition found during the test has been entered into the site-specific corrective action program for resolution (CR 191222). The NRC resident has been informed of the retraction.</br>Notified R1DO(Holody). of the retraction.
Notified R1DO(Holody).
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00:00:00, 14 January 2004 +
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22:44:01, 24 September 2017 +
19:11:00, 16 December 2003 +
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20:40:00, 16 December 2003 +
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