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NPS_Watch Jun 11, 2019
#1
[ no internet access on this date. ]

The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

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

[  ]

NRC Event Notices for June 11, 2019 |
https://www.nrc.gov/reading-rm/doc-colle...611en.html

[ ]

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

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


"At 2345 CDT at River Bend Station (RBS) Unit 1,
a manual Reactor scram was inserted in anticipation of receiving an automatic Reactor Water Level 3 (9.7") scram
due to the isolation of the 'B' Heater String with the 'A' Heater String already isolated.

The 'B' heater string isolation caused loss of suction and subsequent trip of the running Feed Water Pumps 'A' and 'C'.

All control rods fully inserted with no issues.
Subsequently Reactor level was controlled by the Reactor Core Isolation Cooling (RCIC) system.

Feed Water Pump 'C' was restored 4 minutes after the initial trip and the RCIC system secured.

Currently RBS-1 is stable and is being cooled down using Turbine Bypass Valves.

"No radiological releases have occurred due to this event from the unit."

The plant is currently under a normal shutdown electrical lineup.

The licensee notified the NRC Resident Inspector.


* * * UPDATE AT 1603 EDT ON 6/10/19 FROM ALFONSO CROEZE TO JEFF HERRERA * * *

"This amended event notification is being made to provide additional information that was not included in the original notification
made on 6/1/19 at 0315 EDT.

This event was reportable under 10 CFR 50.72(b)(3)(iv)(A) which was not annotated or described in the original report.

"Forty-two minutes after the Feed Water Pump 'C' was started,
the pump tripped causing a Reactor Water Level 3 (9.7") RPS actuation.

Feed Water was restored five minutes later using the Feed Water Pump 'A'."

The NRC Resident Inspector has been notified.

Notified the R4DO (Warnick).


Page Last Reviewed/Updated Tuesday, June 11, 2019


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

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 )

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

MA_Pilgrim_1 @ 0 % - PERMANENT SHUTDOWN

NJ_Salem_1 @ 0 % [ RPV OPEN ( 60 / 28 ) ] RFO started early


Region 2

AL_Browns_Ferry_2 @ 96 % up from 95 % unch from 95 % Sunday; 95 % 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 @ 0 % [ RPV OPEN ( 29 / 31 ) ] plnd start 20190515 ] started early  

LA_RiverBend_1 @ 39 % up from 38 % unch from 38 % Sunday; 32 % Saturday
 MANUAL REACTOR SCRAM DUE TO LOW REACTOR WATER LEVEL |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en54096
[ Exit RFO ( 42 / 34 ] 2nd restart failed; 1st restart failed; missed planned restart date



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[ There is/are currently 02 unit(s) with the RPV OPEN - ref the 2019 Spring Refueling Outage Schedule and Status ]

posted by Staup Knewkinus a Dane Gerous production. All human rights reserved.
 
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