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Full Version: NPS_Watch May 11, 2018
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There are 5 EN(s) today, 2 associated with power stations.



NRC Event Notices for May 11, 2018         
https://www.nrc.gov/reading-rm/doc-colle...511en.html

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

----------- [ Current event for SC_Oconee_3 ]

20180510_1617_EDT | SC_Oconee_3 | NOTIFICATION OF UNUSUAL EVENT |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53396
RFOD_020; RX Mode: Refueling; Refueling

"Unit 3 experienced a loss of AC power while in Mode 6.

Power was regained automatically from Keowee via the underground path.

[ Lake Keowee is the resevoir used for cooling the Oconee units, to create the lake they built a dam with hydroelectric generating ability. ]
https://en.wikipedia.org/wiki/Lake_Keowee
The Keowee Hydro Station generates 158 megawatts from the lake's outflows.

"Decay heat removal has been restored. Spent fuel cooling has been restored.

"Emergency procedures [are] in progress."

The Licensee notified the senior NRC resident inspector, State of South Carolina and local authorities.

The total loss of 4160 volt AC power was for approximately 30 seconds.

The unit is refueled and reactor reassembly complete up to bolting on the reactor head.

There was no effect on Units 1 and 2.

Notified DHS SWO, FEMA Ops Center, FEMA NWC, DHS NICC, and NuclearSSA


* * * UPDATE FROM SCOTT HAWKESWORTH TO HOWIE CROUCH AT 0554 EDT ON 5/11/18 * * *

At 0530 EDT, Oconee terminated the notification of unusual event on Unit 3.

The basis for termination was that offsite power was restored and the plant is now in its normal shutdown electrical lineup.

The licensee has notified Oconee and Pickens counties and will be notifying the NRC Resident Inspector.

Notified R2DO (Ehrhardt), NRR EO (Miller), DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email) and NuclearSSA (email).


----------- [ 2018 event history for SC_Oconee ]


20180421 | SC_Oconee_3 | Begin RFO

20180413 | SC_Oconee_1 | MANUAL REACTOR TRIP FOLLOWING MAIN FEEDWATER CONTROL PROBLEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53329



----------- [ Current event for NY_NineMilePoint_2 ]

20180510 | NY_NineMilePoint_2 | VALID EMERGENCY DIESEL START ON PARTIAL LOSS OF OFFSITE POWER |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53395
RFOD_025; RX Mode: Cold Shutdown; Cold Shutdown

"At 0248 [EDT], with the plant shutdown in Mode 4, Nine Mile Point Unit 2 experienced a partial loss of off-site power
during relay testing that resulted in an automatic start of the Division 2 Emergency Diesel Generator.

All systems responded as expected for the event.

The cause is being investigated.

The station responded in accordance with appropriate Special Operating Procedures and restored impacted systems.

"This event is being reported in accordance with 10CFR50.72(b)(3)(iv)(A)"

At the time of the report, the emergency diesel generators are loaded and supplying plant safety equipment.

The licensee has notified the state of New York Emergency Management Agency and the NRC Resident Inspector.


----------- [ 2018 event history for NY_NineMilePoint ]

20180416 | NY_NineMilePoint_2 | Begin RFO

20180321 | NY_NineMilePoint_1;2 | Retract PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857

20180201 | NY_NineMilePoint_2 | UNUSUAL EVENT - FIRE IN THE TURBINE BUILDING LASTING GREATER THAN 15 MINUTES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53190

20180131 | NY_NineMilePoint_1;2 | Update PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857


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

Region 1

PA_BeaverValley_1 @ 55 % up from 15 % RFO restart ( used 25 of typ 30 )

NJ_HopeCreek_1 @ 6 % up from 3 % RFO restart ( used 27 of typ 22 )

NY_NineMilePoint_2 @ 0 % RPV Closed

PA_susquehanna_1 @ 100 RFO Completed ( used 32 of typical 35 )

PA_Susquehanna_2 @ 85 %, no EN, reason for power drop unk.

Region 2

AL_Browns_Ferry_2 @ 23 % up from 0 %. 4 days SD, no EN, reason for SD unk. day 3

AL_Browns_Ferry_3 @ 87 % up from 88 % up from 85 % since APR 13 ( used 45 of typ 43 days )
[ This unit has not been able to achieve full power since exiting RFO Apr 03 ]

SC_Catawba_2 @ 65 %, no EN, reason for power drop unk, exited RFO Apr 14.

AL_Farley_1 @ 13 %  RFO restart ( used 32 of typ 22 )
 
NC_Harris_1 @ 30 % up from 2 % RFO restart ( used 33 of typ 25 )

GA_HAtch_2 @ 95 % up from 50 % , no EN, reason for power drop unk.

VA_Surry_1 @ 0 % RPV Closed

TN_WattsBar_2 @ 58 %, no EN, reason for power drop unk.


Region 3

IL_Braidwood_1 @ 92 %, no EN, reason for power drop unk.

IL_Byron_1 @ 88 %, no EN, reason for power drop unk.

MI_Cook_2 @ 12 %, recovering from SD during RFO restart ( used 59 of typ 90 )

MI_Fermi_2 @ 87 % down from 90 % ; 88 % ; 42 % ; 0 % restart from 22 days down
AUTOMATIC REACTOR SCRAM AND EMERGENCY CORE COOLING SYSTEM INJECTION |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53336

WI_PointBeach_1 @ 100 % up from 70 %, no EN, reason for power drop unk.

IL_QuadCities_1 @ 87 %, no EN, reason for power drop unk.
IL_QuadCities_2 @ 98 %, no EN, reason for power drop unk.


Region 4

AR_Arkansas_1 @ 0% down from 100 % up from 0% RFO ( used 44 of typ 35 )
[ no EN. Sudden full power then SD ]


[ There are currently 2 units with the RPV open - ref the Current ReFueling Outage Schedule and Status ]


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