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Full Version: NPS_Watch Jun 18, 2019
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The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

There are/is 4 EN(s) today, 1 associated with power stations.

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NRC Event Notices for June 18, 2019 |
https://www.nrc.gov/reading-rm/doc-colle...618en.html

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----------------- Power Reactor Event Notices
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----------- [ Current event for LA_RiverBend_1 ]

20190617 | LA_RiverBend_1 | 60-DAY OPTIONAL TELEPHONIC NOTIFICATION DUE TO INVALID ACTUATION OF A GENERAL CONTAINMENT ISOLATION SIGNAL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54121
RFOD_032; RX Mode: Refueling; Refueling [ Date of notification ]

"This 60-day telephone notification is being made in accordance with the reporting requirements specified by 10 CFR 50.73(a)(1)
and 10 CFR 50.73(a)(2)(iv)(A) to describe an invalid actuation of a general containment isolation signal affecting multiple systems.

"On April 30, 2019, at approximately 0650 CDT, a level 2 containment isolation signal was introduced
when a fuse for the Nuclear Steam Supply Shutoff System was removed for a maintenance clearance.

The level 2 containment isolation signal caused a trip of the Division I DC bus back-up charger,
leaving only the Division I battery to carry the DC bus.

At 0707 CDT the bus was de-energized when another unrelated clearance opened the battery supply breaker to the DC bus causing another containment isolation signal.

This event did not affect Shutdown Cooling or any other protected Safety Related Equipment.

"The containment isolation signals caused an isolation of the systems listed below.

All components that were not removed from service, gagged in position, already in the expected position due to plant conditions, or de-energized due to plant condition performed as designed.

"Containment Isolation valves for the following systems isolated as expected:

Drywell and Containment Floor Drains,
Drywell and Containment Equipment Drains,
Condensate Makeup,
Fire Protection Water,
Service Air,
Instrument Air,
Reactor Water Cleanup,
Spent Fuel Cooling and Cleanup,
Reactor Plant Component Cooling Water,
Chilled Water,
Reactor Recirculation,
Main Steam Drains,
Reactor Building Ventilation, and
Fuel Building Ventilation."

The licensee notified the NRC Resident Inspector.


----------- [ 2019 event history for LA_RiverBend ]

20190610 | LA_RiverBend_1 | Update MANUAL REACTOR SCRAM DUE TO LOW REACTOR WATER LEVEL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54096

20190601 | LA_RiverBend_1 | MANUAL REACTOR SCRAM DUE TO LOW REACTOR WATER LEVEL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54096

20190514 | LA_RiverBend_1 | restart
20190513 | LA_RiverBend_1 | shutdown


20190511 | LA_RiverBend_1 | Exit RFO ( 42 / 34 )

20190430 | LA_RiverBend_1 | 60-DAY OPTIONAL TELEPHONIC NOTIFICATION DUE TO INVALID ACTUATION OF A GENERAL CONTAINMENT ISOLATION SIGNAL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54121
RFOD_032; RX Mode: Refueling; Refueling [ Date of event ]

20190426 | LA_RiverBend_1 | THROUGH WALL LEAK ON STANDBY LIQUID CONTROL SYSTEM PIPING |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54031 |
RFOD_028; RX Mode: Refueling; Refueling

20190330 | LA_RiverBend_1 | Begin RFO ( 01 / 34 )




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----------- [ Current event for


----------- [ 2019 event history for


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----------- [ Current event for


----------- [ 2019 event history for

[ no previous ENs for this site in 2019 ]
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----------- [ Current event for
----------- [ 2019 event history for
[ no previous ENs for this site in 2019 ]
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------------[ PART 21 ] - These ENs are for issues that involve multiple site/reactor units
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------------Other reactor info from daily power tracking https://www.nrc.gov/reading-rm/doc-colle...atus/2019/
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Region 1


NY_Ginna_1 @ 3 % up from 0 % down from 30 % Sunday; 30 % Saturday
[ no EN, unk reason for power drop and shutdown ]

MA_Pilgrim_1 @ 0 % - PERMANENT SHUTDOWN

NJ_Salem_1 @ 0 % [ RPV OPEN ( 67 / 28 ) ] RFO started early


Region 2

AL_Browns_Ferry_2 @ 98 % unch from 98 % up from 96 % Sunday; 96 % Saturday
[ Completed RFO ( 39 / 25 ) ] power uprate testing, missed planned restart date

FL_Saint_Lucie_1 @ 0 % since 20190425
 AUTOMATIC REACTOR TRIP DUE TO TURBINE GENERATOR TRIP |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en54027


Region 3  

IL_Clinton_1 @ 98 % unch from 98 % since 20190527
[ 98-99 % are this units normal thermal power range. ]


Region 4

AR_Arkansas_2 @ 0 % unch from 0 % since 20190527
 AUTOMATIC REACTOR TRIP DUE TO A REACTOR COOLANT PUMP TRIP ON GROUND FAULT |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en54091

WA_Columbia_2 @ 2 % up from 0 %
[ Exit RFO ( 35 / 31 ) ] plnd start 20190515 ] started early  



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[ There is/are currently 01 unit(s) with the RPV OPEN - ref the 2019 Spring Refueling Outage Schedule and Status ]

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