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Full Version: NPS_Watch Mar 26, 2019
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The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

There are 7 EN(s) today, 1 associated with power stations.

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NRC Event Notices for March 26, 2019 |
https://www.nrc.gov/reading-rm/doc-colle...326en.html

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----------------- Power Reactor Event Notices
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----------- [ Current event for NC_Brunswick_1;2 ]

20190325 | NC_Brunswick_1;2 | AUTOMATIC START OF FOUR EMERGENCY DIESEL GENERATORS |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53955
RFOD_024; RX Mode: Cold Shutdown; Cold Shutdown

"At 0402 Eastern Daylight Time (EDT) on March 25, 2019, an actuation of the four Emergency Diesel Generators (EDGs) occurred.

At the time of the event, Unit 1 was in Mode 1 at approximately 100% power and Unit 2 was in Mode 4 at 0% power.

Unit 2 was in the process of aligning the electrical distribution system to power the emergency buses
via the Unit Auxiliary Transformer (UAT) in accordance with plant procedures.

[ Unit 2 was prepping for restart to exit RFO. ]

It was determined that a fault occurred on the power path between the 230 KV switchyard and the UAT.

This caused a main generator differential lockout relay to actuate; thereby starting the EDGs.
All emergency buses remained energized from offsite power via the Startup Auxiliary Transformer and, therefore,
the EDGs did not tie to their respective buses.

The EDGs responded per design to this event.

This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in valid actuation of the EDGs.
Due to the shared configuration of the Brunswick electrical system, both Unit 1 and Unit 2 are affected.

"The Unit 2 main generator lockout was reset and the EDGs have been restored to standby condition.

Troubleshooting activities to determine the cause of the fault are in progress.

"There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."


----------- [ 2019 event history NC_Brunswick ]

20190305 | NC_Brunswick_2 | AUTOMATIC ACTUATION OF THE PRIMARY CONTAINMENT ISOLATION SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53911
RFOD_004; RX Mode: Refueling; Refueling

20190302 | NC_Brunswick_2 | Begin RFO ( 01 / 25 )


20190131 | NC_Brunswick_1;2 | Update PART 21 - COMPONENTS PROVIDED AS SAFETY-RELATED SPARE PARTS WITHOUT BEING DEDICATED |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53816

20190107 | NC_Brunswick_1;2 | PART 21 - COMPONENTS PROVIDED AS SAFETY-RELATED SPARE PARTS WITHOUT BEING DEDICATED |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53816


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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
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Region 1
 
NY_Indian_Point_2 @ 0 % down from 13 % Sundqay; 1 % Saturday
 REACTOR AUTOMATIC TRIP ON TURBINE TRIP |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en53954

NY_Indian_Point_3 @ 0 % [ RPV OPEN ( 16 / 30 ) 20190312 ]

PA_Limerick_2 @ 92 % [ coastdown to RFO 20190415 ]

NY_Nine_Mile_Point_1 @ 0 % [ RPV OPEN ( 09 / 21 ) ]

NJ_Salem_1 @ 77 % [ coastdown to RFO 20190426 ]

PA_Susquehanna_2 @ 0 % [ Begin RFO ( 04 / 35 ) 20190323 ]
[ Expect RPV OPEN Wednesday ]


Region 2

AL_Browns_Ferry_2 @ 0 % [ RPV OPEN ( 25 / 25 ) ]

NC_Brunswick_2 @ 0 % [ RPV CLOSED ( 25 / 28 ) ]

GA_Hatch_2 @ 0 %  unch from 0 % Sunday; 79 % Saturday
[ Exit RFO ( 44 / 20 ) ] [ 20190204 shutdown early. missed planned restart date ]
 MANUAL REACTOR SCRAM DUE TO DEGRADING CONDENSER VACUUM
 https://www.nrc.gov/reading-rm/doc-colle...ml#en53953

NC_McGuire_1 @ 0 % [ Begin RFO ( 04 / 31 ) 20190323 ]
[ Expect RPV OPEN Wednesday. ]

VA_NorthAnna_2 @ 0 % [ RPV OPEN ( 24 / 36 ) ]

FL_Turkey_Point_4 @ 0 % [ RPV OPEN ( 16 / 28 ) 20190311 ]

GA_Vogtle_2 @ 0 % [ RPV OPEN ( 16 / 20 ) 20190310 ]


Region 3

IL_Byron_2 @ 97 % [ coastodwn to RFO 20190408 ]

IL_Clinton_1 @ 98 % unch from 98 % Sunday;
[ units normal operating range ]

MI_DC_Cook_1 @ 0 % [ RPV OPEN ( 21 / 90 ) 20190306  ]

MN_Monticello_1 @ 78 %  [ coastdown to RFO 20190413 ]

OH_Perry_1 @ 0 % [ RPV OPEN ( 11 / 34 ) 20190309 ]

WI_Point_Beach_1 @ 0 % [ Begin RFO ( 04 / 26 ) 20190322 ]
[ Expect RVP OPEN Wednesday ]

IL_Quad_Cities_1 @ 0 % [ RPV OPEN ( 09 / 20 ) 20190318 ]


Region 4

TX_ComanchePeak_1 @ 96 % [ coastdown to RFO 20190407

MS_GrandGulf_1 @ 91 % up from 90 % down from 93 % up from 60 % Saturday
[ no EN, unk reason for power drop. ]

LA_RiverBend_1 @ 75 % unch from 75 % Saturday
[ coastdown to RFO 20190329, coastdown breakdown ]


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[ There is/are currently 9 unit(s) with the RPV OPEN - ref the 2019 Spring Refueling Outage Schedule and Status ]

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