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NPS_Watch Oct 12, 2018
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

There are 8 EN(s) today, 4 associated with power stations.

[  ]

NRC Event Notices for October 12, 2018 |
https://www.nrc.gov/reading-rm/doc-colle...012en.html

[ event times not entered ]

----------------------------------------------------------------------------------------------------------------------------------------------------
----------------- Power Reactor Event Notices
----------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for AL_BrownsFerry_2 ]

20181011 | AL_BrownsFerry_2 | [ Report Date ] INVALID ACTUATION OF A GENERAL CONTAINMENT ISOLATION SIGNAL AFFECTING MORE THAN ONE SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53661

"This 60-day telephone notification is being made per the reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1)
to describe an invalid actuation of a general containment isolation signal affecting more than one system.

"On August 16, 2018, at approximately 1736 CDT, Browns Ferry Nuclear Plant (BFN),
Unit 2 experienced an unexpected loss of the 2B Reactor Protection System (RPS).

This resulted in Primary Containment Isolation System (PCIS) groups 2, 3, 6, and 8 isolations,
and initiation of Standby Gas Treatment Trains A, B, and C
and Control Room Emergency Ventilation System Train A.

All affected safety systems responded as expected with the exception of the Unit 1 Refuel Zone Supply Fan Outboard Isolation Damper,
1-FCO-64-5, that failed to indicate closed position.

"Plant conditions which initiate PCIS Group 2 actuations are Reactor Vessel Low Water Level (Level 3) or High Drywell Pressure.
The PCIS Group 3 actuations are initiated by Reactor Vessel Low Water Level (Level 3) or Reactor Water Cleanup Area High Temperature.
The PCIS Group 6 actuations are initiated by Reactor Vessel Low Water Level (Level 3), High Drywell Pressure,
or Reactor Building Ventilation Exhaust High Radiation (Reactor Zone or Refuel Zone).
The PCIS Group 8 actuations are initiated by Low Reactor Vessel Water Level (Level 3) or High Drywell Pressure.

At the time of the event, these conditions did not exist; therefore, the actuation of the PCIS was invalid.

"The cause of the RPS MG [Motor Generator] Set trip was a failed (shorted) operating coil associated with the 480 VAC motor starter inside the control box.

"There were no safety consequences or impact to the health and safety of the public as a result of this event.

"This event was entered into the Corrective Action Program as Condition Reports 1440047 and 1440050.

"The NRC Resident Inspector has been notified of this event."


----------- [ 2018 event history for AL_BrownsFerry ]

20181013 | AL_BrownsFerry_1 | Sched RFO


20180822 | AL_BrownsFerry_1;2;3 | NOTIFICATION OF UNUSUAL EVENT DECLARED DUE TO FIRE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53558

20180816 | AL_BrownsFerry_2 | [ Event Date ] INVALID ACTUATION OF A GENERAL CONTAINMENT ISOLATION SIGNAL AFFECTING MORE THAN ONE SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53661

20180709 | AL_BrownsFerry_1 | HIGH PRESSURE COOLANT INJECTION SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53497

20180620 | AL_BrownsFerry_1;2;3 | UNUSUAL EVENT DECLARED DUE TO TOXIC GAS RELEASE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53462

20180608 | AL_BrownsFerry_1 | Retract HIGH PRESSURE COOLANT INJECTION SYSTEM INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53340

20180608 | AL_BrownsFerry_1 | Retract ACCIDENT MITIGATION - HIGH PRESSURE COOLANT INJECTION DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53014

20180417 | AL_BrownsFerry_1 | HIGH PRESSURE COOLANT INJECTION SYSTEM INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53340


20180403 | AL_BrownsFerry_3 | Exit RFO [ 45 / 43 ]

20180329 | AL_BrownsFerry_1;2;3 | UNANALYZED CONDITION DUE TO INOPERABILITY OF EMERGENCY EQUIPMENT COOLING WATER PUMP |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53300
[ AL_BrownsFerry_1;2;3 @ 100;100;0 RX Mode: PO;PO;Cold Shutdown ]

20180322 | AL_BrownsFerry_1;2;3 | Update PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES     
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246
[ This EN is missing as of 04/18/2018 ]

20180318 | AL_BrownsFerry_1 | AUTOMATIC REACTOR SCRAM DUE TO TURBINE CONTROL VALVE CLOSURE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53269

20180316 | AL_BrownsFerry_1;2;3 | UNANALYZED CONDITION AFFECTING RESIDUAL HEAT REMOVAL SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53267
[ AL_BrownsFerry_1;2;3 @ 100;100;0 RX Mode: PO;PO;Refueling ]

20180307 | AL_BrownsFerry_1;2;3 | NOTIFICATION OF UNUSUAL EVENT DECLARED |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53247
[ AL_BrownsFerry_1;2;3 @ 100;100;0 RX Mode: PO;PO;Refueling ]

20180306 | AL_BrownsFerry_1;2;3 | Update PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246

20180217 | AL_BrownsFerry_3 | Begin RFO


20180110 | AL_BrownsFerry_3 | AUTOMATIC REACTOR SCRAM DUE TO TURBINE CONTROL VALVE FAST CLOSURE SCRAM SIGNA |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53162


----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for MD_CalvertCliffs_2 ]

20181011 | MD_CalvertCliffs_2 | AIR START SOLENOID CLOSURE FAILURE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53663

"During a post maintenance start of the 1B diesel generator, the air start solenoid valves did not close as expected.

This resulted in lowering air pressure in the common air start headers causing inoperability of the 2A and 2B diesel generators at time 23:03.

The 1B diesel generator was isolated from the common air start header, which restored the air start header pressure to the 2A and 2B diesel generators.

The 2A and 2B diesel generators were declared operable at 23:34."

The NRC Resident Inspector was notified.

[ ]

----------- [ 2018 event history for MD_CalvertCliffs ]


20180825 | MD_CalvertCliffs_1;2 | PART 21 NOTIFICATION - SELECTOR SWITCH SHORTED DUE TO INCORRECT HARDWARE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53570

20180707 | MD_CalvertCliffs_1 | CONTROL ROOM VENTILATION INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53493

20180514 | MD_CalvertCliffs_1 | SALTWATER SYSTEM NON-CONFORMING WITH LICENSING BASIS FOR TORNADO GENERATED MISSILES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53401


20180317 | MD_CalvertCliffs_1 | Exit RFO [ 26 / 23 ]

20180308 | MD_CalvertCliffs_1;2 | DEFECT REGARDING CERTAIN PRESSURE TRANSMITTERS AND AMPLIFIER CIRCUIT CARD ASSEMBLIES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53263

20180219 | MD_CalvertCliffs_1 | Begin RFO



----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for VA_Surry_1 ]

20181011 | VA_Surry_1 | ACTUATION OF EMERGENCY DIESEL GENERATOR DUE TO TRANSFORMER TRIP |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53662

"On 10/11/18 at 2304, with both Surry Units at 100% power, the 'A' Reserve Station Service Transformer (RSST) tripped on a pilot wire lockout.

This resulted in electrical isolation of the 'A' RSST, the 'D' Transfer Bus and the Unit 1 'J' Emergency Bus.

The #3 Emergency Diesel Generator (EDG) started and loaded on the Emergency Bus, as designed.

Operations entered the appropriate Abnormal Procedures and stabilized the unit. All equipment operated as expected during the event.

"A report of a flash at the 'A' RSST was received (at approximately the time of the initiating event) but there were no reports of visible damage,smoke or fire from the RSST or any associated breakers on subsequent investigation.

The #3 EDG is running with normal parameters.

"There was heavy wind/rain in the area associated with Tropical Storm Michael.

"All other electrical distribution systems are in a normal alignment.

"The organization is staffing to evaluate the lockout and required actions for recovery.

"No radiological consequences resulted from this event.

"This event is being reported IAW [in accordance with] 10 CFR 50.52(b)(3)(iv)(A) due to the actuation of the #3 EDG.

"The NRC Resident [Inspector] was notified"


----------- [ 2018 event history VA_Surry ]


20181028 | VA_Surry_2 | Sched RFO


20181011 | VA_Surry_1 | unit restart, no EN, unk reason for shutdown.
20181006 | VA_Surry_1 | unit shutdown, no EN, unk reason for shutdown.


20180530 | VA_Surry_1 | Exit RFO [ 40 / 25 ]

20180523 | VA_Surry_1;2 | PART 21 - WEAR OF THERMAL SLEEVE IN WESTINGHOUSE CONTROL ROD DRIVE MECHANISMS |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53422

20180421 | VA_Surry_1 | Begin RFO


20180214 | VA_Surry_1;2 | FITNESS FOR DUTY |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53210

20180117 | VA_Surry_1 | AUTO-START OF EMERGENCY DIESEL GENERATOR DUE TO TRANSFORMER FUSES BEING DISCONNECTED |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53170

----------------------------------------------------------------------------------------------------------------------------------------------------
------------[ PART 21 ]

20181011 | IL_Clinton_1 | [ Report Date ] PART 21 REPORT - DEFECT ASSOCIATED WITH DRY TYPE TRANSFORMER |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53660

[ Long EN, synopsis; Transformer failed after 37 years of designed 40 year lifespan. IL_Clinton appears to be only known failure so far. ]
 
----------------------------------------------------------------------------------------------------------------------------------------------------


----------------------------------------------------------------------------------------------------------------------------------------------------
----------------- Other reactor info from daily power tracking
-----------------------------------------------------------------------------------------------------------------

[ the asterisk signifies that an uptick in rad detection at nearby EPA radmon stations was observed on NETC. ]
[ NETC reflecting EPA stn data ]

Region 1

PA_BeaverValley_2 @ 84 % [ coastdown to RFO 20181021 ]

NY_Fitzpatrick_1 @ 95 % down from 100 % ; 50 % ; 55 % ; 25 % Monday; 0 % Sunday ; 0 % Saturday [ Completed RFO ]

NY_Ginna_1 @ 88 % [ coastdown to RFO 20181022 ]

CT_Millstone_2 @ 0 % [ RPV OPEN ( RFO ) ]

NJ_Oyster_Creek_1 @ 0 % [ RPV CLOSED , defueling completed for permanent shutdown ]

PA_Peach_Bottom_2 @ 85 % [ coastdown to RFO 20181015 ]  

PA_Peach_Bottom_3 @ 24 % up from 12 % ; 12 % ; 0 % ; 0 % ; 0 % Sunday ; 0 % Saturday
 AUTOMATIC SCRAM DUE TO A LOSS OF TWO CONDENSATE PUMPS |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en53630

MA_Pilgrim_1 @ 1 % up from 0 % [ 6 days down ] recovering from
 AUTOMATIC REACTOR SCRAM DUE TO LOW REACTOR WATER LEVEL |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en53648

NJ_Salem_2 @ 0 % [ Begin RFO ]

NH_Seabrook_1 @ 0 % [ RPV OPEN ( RFO ) ]



Region 2

AL_BrownsFerry_1 @ 82 % [ RFO 20181013 ]

AL_BrownsFerry_3 @ 75 % up from 20 % ; 0 % ; 0 % ; 0% ; 0 % Sunday ; 0 % Saturday , no EN unk reason for shutdown.

NC_Brunswick_2 @ 99 % down from 100 % ; 93 % ; 93 % ; 93 % ; 92 % Sunday ; 84 % Saturday , recovering from hurricane Florence shutdown.

AL_Farley_1 @ 56 % up from 30 % ; 98 % ; 98 % ; 98 % ; 98 % Sunday ; 98 % Saturday , no EN, unk reason for shutdown.

AL_Farley_2 @ 54 % up from 30 % ; 100 % [ power lowered due to hurricane ]

NC_McGuire_2 @ 0 % [ RPV OPEN ( RFO ) ]

SC_Oconee_1 @ 96 % [ coastdown to RFO 20181013 ]

SC_Robinson_2 0 % [ RPV OPEN ( RFO ) ]

TN_Sequoyah_2 86 % [ coastdown to RFO 20181103 ]

SC_Summer_1 @ 0 % [ RPV OPEN ( RFO ) ]

VA_Surry_1 @ 100 % up from 6 % ; 0 % ; 0 % ; 0 % ; 0 % Sunday ; 0 % Saturday , no EN unk reason for shutdown.

FL_Turkey_Point_3 @ 0 % [ RPV OPEN ( RFO ) ]

TN_Watts_Bar_1 @ 0 % [ RPV OPEN ( RFO ) ]


Region 3

IL_Braidwood_1 @ 100 % up from 90 % ; 100 % , no EN, unk reason for power lowered

IL_Braidwood_2 @ 0 % [ RPV OPEN ( RFO ) ]

IL_Byron_1 @ 100 % up from 84 % ; 100 % , no EN, unk reason for power lowered

IL_Clinton_1 @ 98 % ; 98 % ; 98 % ; 98 %  Sunday ; 98 % Saturday ; 78 % , no EN, reason for power drop unk. [ 99 % is this units normal max power ]

IL_Dresden_3 @ 85 % [ coastdown to RFO 20181031 ]

MI_Fermi_2 @ 0 % [ RPV OPEN ( RFO ) ]

WI_Point_Beach_2 @ 0 % [ RPV OPEN ( RFO ) ]

MN_Prairie_Island_1 @ 0 % [ RPV OPEN ( RFO ) ]

IL_Quad_Cities_1 @ 100 % up from 88 % ; 100 % , no EN, unk reason for power lowered


Region 4

AR_Arkansas_2 @ 0 % [ RPV OPEN ( RFO ) ]
 
NE_Cooper_1 @ 0 % [ RPV OPEN ( RFO ) ]  

AZ_PaloVerde_2 @ 0 % [ RPV OPEN ( RFO ) ]

LA_Riverbend_1 @ 99 % down from 100 % , no EN, unk reason for power lowered

TX_SouthTexas_1 @ 0 % [ RPV OPEN ( RFO ) ]

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[ There are currently 15 units with the RPV open - ref the 2018 Fall Refueling Outage Schedule and Status ]

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