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NPS_Watch May 18, 2018
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.


There are 5 EN(s) today, 4 associated with power stations.

[ The page nav isn't working correctly on this EN page. ]

NRC Event Notices for May 18, 2018         
https://www.nrc.gov/reading-rm/doc-colle...518en.html

--------------------------------------------------------------------------------------------------
----------------- Power Reactor Event Notices
--------------------------------------------------------------------------------------------------
----------- [ Current event for IL_Clinton_1 ]

20180517 | IL_Clinton_1 | EMERGENCY DIESEL GENERATORS INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53409
RFOD_018; RX Mode: Cold Shutdown; Cold Shutdown


"On May 17, 2018, with the Unit in Mode 4,
Clinton Power Station experienced the concurrent inoperability of two Emergency Diesel Generators (DG).

This event is being reported as an 8-hour non-emergency notification per 10 CFR 50.72(b)(3)(v) as,
'Any event or condition that at the time of discovery could have prevented the fulfillment
of the safety function of structures or systems that are needed to mitigate the consequences of an accident.'

"On May 17, 2018, at 15:03 CDT,
it was identified that the Division 2 DG air start receiver isolation valves 1DG160 and 1DG161 were shut.
With these valves shut, the Division 2 DG is inoperable.

At the time, Division 1 DG was also inoperable for a 4160V 1A1 partial bus outage.
The Technical Specification (TS) Actions for TS 3.8.2, AC Sources Shutdown,
and TS 3.5.2, RPV Water Inventory Control, were entered as a result of the inoperability of the onsite
AC power sources to isolation valves being credited to limit RPV DRAIN TIME.

"Division 2 DG air receivers were realigned at 15:45 CDT and the Division 2 DG auto start function was restored.
Offsite power was available throughout this event and there was no impact to the health and safety of the public
or plant personnel.

"Investigation is ongoing.

It has been determined that the air start receiver isolation valves remained closed
following system restoration on May 11, 2018.

However, the Division 2 DG was not required to be Operable by TS until 00:45 CDT on May 14, 2018
when the Division 1 DG was made inoperable as a result of scheduled plant maintenance.

"The NRC Resident Inspector has been notified."


----------- [ 2018 event history for IL_Clinton ]

20180430 | IL_Clinton_1 | Begin RFO ( orig sched for 4/20 )

20180330 | IL_Clinton_1 | PRIMARY CONTAINMENT DECLARED INOPERABLE DUE TO BOTH AIRLOCK DOORS OPEN SIMULTANEOUSLY |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53303

20180218 | IL_Clinton_1 | NRC Finalizes White Finding at Clinton Nuclear Power Plant |
https://www.nrc.gov/reading-rm/doc-colle...05.iii.pdf



--------------------------------------------------------------------------------------------------
----------- [ Current event for MN_PrairieIsland_2 ]

20180517 | MN_PrairieIsland_2 | AUTOMATIC ACTUATION OF EMERGENCY DIESEL GENERATOR |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53408

"At 1115 (CDT) on May 17, 2018 with Unit 2 in Mode 1 at 100% power, the station experienced an auto-start of Emergency Diesel Generator, D5. Preliminary information indicates that the Bus 25 Potential Transformer (PT) fuse drawer was inadvertently opened, causing Breaker 25-16 to open and de-energize bus 25. Operators were able to manually close the D5 EDG output breaker to re-energize bus 25. 22 Component Cooling (CC) Pump auto-started on the loss of 21 CC Pump due to low pressure in the CC system as designed. All equipment functioned as designed.

"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the EDG.

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

"The NRC Senior Resident Inspector has been notified."

----------- [ 2018 event history for MN_PrairieIsland ]

20180323 | MN_PrairieIsland_1;2 | LOSS OF EMERGENCY ASSESSMENT CAPABILITY |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53286


--------------------------------------------------------------------------------------------------
----------- [ Current event for NC_Brunswick_1;2 ]

20180517 | NC_Brunswick_1;2 | EMERGENCY NOTIFICATION SIREN MALFUNCTIONING |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53406

"On May 17, 2018, at approximately 1045 Eastern Daylight Time (EDT),
Duke Energy confirmed that one emergency notification siren (i.e., B03) located in Brunswick County was malfunctioning.
The siren was making an abnormal sound, alternating between low and high pitch.
At approximately 1103 EDT, the siren was deactivated.
There are a total of 38 sirens located in Brunswick and New Hanover Counties.
No other siren was affected.

"Duke Energy notified the State of North Carolina, Brunswick County, and New Hanover County of the issue.

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

The NRC Resident Inspector has been notified."

----------- [ 2018 event history for NC_Brunswick ]

20180407 | AUTOMATIC REACTOR TRIP AND PCIS ACTUATION DURING STATOR COOLING SYSTEM TESTING |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53319


20180403 | NC_Brunswick_1 | exit RFO ( 32 / 28 )

20180330 | NC_Brunswick_1;2 | PART 21 - REFURBISHED PRESSURE REGULATOR MAY RESULT IN EMERGENCY DIESEL GENERATOR FAILURE TO START |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53302

20180322 | NC_Brunswick_1;2 | Update PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246

20180306 | NC_Brunswick_1;2 | Update PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246

20180303 | NC_Brunswick_1 | begin RFO


20180129 | NC_Brunswick_2 | Retract HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53123


--------------------------------------------------------------------------------------------------
----------- [ Current event for TX_SouthTx_1;2 ]

20180517 | TX_SouthTX_1;2 | Update OFFSITE NOTIFICATION OF FIRES IN THE OWNER CONTROLLED AREA |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53405


EN Revision Imported Date : 5/18/2018

EN Revision Text: OFFSITE NOTIFICATION OF FIRES IN THE OWNER CONTROLLED AREA

"On May 16, 2018 at approximately 1425 CDT, two grass fires started in the Owner Controlled Area surrounding South Texas Project (STP) Nuclear Generating Station. The Bay City Volunteer Fire Department was called to the site to fight the fire. Reinforcements from Tres Palacios Oaks, Midfield and Markham Fire Departments were called in to assist with firefighting efforts. The grass fires were extinguished on May 16, 2018 at 2046 CDT. The fires occurred outside the protected area of the plant and presented no danger to the public or the safe operation of the units.

"On May 16, 2018 at 2202 CDT, STP Nuclear Generating Station issued a press release to inform area residents."

The licensee notified the NRC Resident Inspector.


* * * UPDATE ON MAY 17, 2018 AT 13:33 EDT FROM BILLY HERZOG TO THOMAS KENDZIA * * *

"On May 17, 2018, at 11:10 CDT
STP Nuclear Generating Station notified the Texas Commission on Environmental Quality (TCEQ) of the grass fires,
resulting in visible emissions,
that occurred in the Owner Controlled Area of the STP Nuclear Generating Station on May 16, 2018,
between the times of 14:25 and 20:46 CDT.

"No further press releases are planned."

The licensee notified the NRC Resident Inspector.

Notified R4DO (Gepford).


----------- [ 2018 event history for TX_SouthTx ]

20180516 | TX_SouthTx_1;2 | OFFSITE NOTIFICATION OF FIRES IN THE OWNER CONTROLLED AREA |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53405


20180427 | TX_SouthTx_2 | Exit RFO

20180324 | TX_SouthTx_2 | Begin RFO


20180321 | TX_SouthTx_1;2 | Retract PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857

20180131 | TX_SouthTx_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

NY_Fitzpatrick_1 @ 52 % ; 52 % ; 52 % ; 50 % ; 48 %, no EN, reason for power drop unk.

NJ_HopeCreek_1 @ 97 % ; 97 % ; 94 % ; 93 % ; 66 % ; 35 % ; 20 %  ; 6 % ; 3 % RFO restart ( used 27 of typ 22 )

NY_NineMilePoint_2 @ 71 % ; 33 % ; 23 % ; 17 % ; 4 % RFO restart ( used 27 of typ 22 )

Region 2

AL_Browns_Ferry_3 @ 87 % up from 86 % ; 80 % ; 87 %  since APR 13 ( used 45 of typ 43 days )
[ This unit has not been able to achieve full power since exiting RFO Apr 03 ]

AL_Farley_1 @ 85 % up from 74 % ; 67 % ; 47 % ; 2 % ; 1 % ; 18 % ; 13 %  RFO restart ( used 32 of typ 22 )
[ may have briefly shutdown Saturday. Restart problems. ]

Region 3

IL_Byron_1 @ 72 %, no EN, reason f pwer drop unk.

MI_Cook_2 @ 88 % ; 88 % ; 87 % ; 78 % ; 77 % ; 49 % ; 45 % ; 12 %, recovering from SD during RFO restart ( used 59 of typ 90 )

IA_Duane_Arnold_1 @ 98 %, no EN, reason f pwer drop unk.

MI_Fermi_2 @ 63 % : 63 % ; 87 % ; 87 % ; 87 % ; 87 %  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

Region 4

AR_Arkansas_1 @ 0 % ; 0 % ; 1 % ; 0%   RFO restart ( used 44 of typ 35 )
[ no EN. Sudden full power ( 05/07 ) then SD ]

LA_Riverbend_1 @ 100 % up from 66 % ; 93 % ; 94 % ; 100 % ; 63 %, dropped to 63 % Sat., no EN, reson for power drop unk.

KS_WolfCreek_1 @ 9 %, RFO restart ( used 47 of typ 41 )

[ There are currently 1 units with the RPV open - ref the Current ReFueling Outage Schedule and Status ]


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