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NPS_Watch May 29, 2018
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.


There are 7 EN(s) today, 2 associated with power stations.

[  ]

NRC Event Notices for May 29, 2018    
https://www.nrc.gov/reading-rm/doc-colle...529en.html

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

--------------------------------------------------------------------------------------------------
----------- [ Current event for MI_Fermi_2 ]

20180527 | MI_Fermi_2 | REACTOR WATER CLEANUP SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53429

REACTOR WATER CLEANUP SYSTEM DECLARED INOPERABLE

"On May 27, 2018 at 0630 EDT,
the Reactor Water Cleanup (RWCU) System Isolation Differential Flow - High function was declared inoperable as a result of indicating downscale.

This condition would have prevented the primary containment isolation valves for the RWCU system
from automatically isolating on a high differential flow instrumentation signal.

"At 0753, RWCU was shutdown and the affected penetration flow paths were isolated
in accordance with station procedures per Fermi Technical Specifications.

"The cause of the event is under investigation.

"There was no radiological release associated with this event.

All other RWCU primary containment isolation instrumentation functions remained operable
and the associated RWCU system primary containment isolation valves were capable of being remotely closed by the control room operators throughout the event.

However, the condition is reportable pursuant to 10 CFR 50.72(b)(3)(v)© and 10 CFR 50.72(b)(3)(v)(D).

"The NRC Resident Inspector was notified."

[ The RWCU is used to remove fission, corrosion and other soluble and insoluble impurities from the reactor coolant. ]

----------- [ 2018 event history for MI_Fermi ]

20180504 | MI_Fermi_2 | OFFSITE NOTIFICATION |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53385

20180414 | MI_Fermi_2 | AUTOMATIC REACTOR SCRAM AND EMERGENCY CORE COOLING SYSTEM INJECTION |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53336

20180301 | MI_Fermi_2 | FITNESS FOR DUTY - POSITIVE RESULT FOR ALCOHOL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53236

20180215 | MI_Fermi_2 | FITNESS FOR DUTY - CONTRABAND DISCOVERED IN THE PROTECTED AREA |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53214

20180122 | MI_Fermi_2 | OFFSITE NOTIFICATION DUE TO OIL SPILL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53178

20180111 | MI_Fermi_2 | SECONDARY CONTAINMENT MOMENTARY LOW PRESSURE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53165


----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for CT_Millstone_2;3 ]

20180527 | CT_Millstone_2;3 | OFFSITE NOTIFICATION DUE TO SPURIOUS SIREN ACTUATION |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53428

County and state governments were notified due to the spurious actuation of a single emergency notification siren located in New London County in the Town of Lyme.

The siren was silenced.
[ Silenced, not repaired. So if there is an emergency the people in this area won't be notified. ]

If required, alternate notification of the public in the area will be through local Emergency Operations Center route alerting.

The NRC Resident Inspector has been notified


----------- [ 2018 event history for CT_Millstone ]

20180412 | CT_Millstone_3 | FITNESS-FOR-DUTY REPORT INVOLVING DISCOVERY OF KOMBUCHA TEA INSIDE THE PROTECTED AREA |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53328

20180321 | CT_Millstone_2;3 | Retract PART 21 - DEFECTIVE SAFETY RELATED VALVES |     
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857

20180226 | CT_Millstone_3 | VIOLATION OF FITNESS FOR DUTY POLICY  |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53229

20180131 | CT_Millstone_2;3 | Update PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857



--------------------------------------------------------------------------------------------------
----------- [ Current event for

----------- [ 2018 event history for

--------------------------------------------------------------------------------------------------
----------- [ Part 21 Notice ]

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

Region 1


PA_Limerick_1 @ 100 %, dropped power to 93 % Monday, no EN, reason for dop unk.

PA_Limerick_2 @ 100 %, dropped power to 94 % Monday, no EN, reason for dop unk.

NJ_Oyster_Creek_1  @ 100 %, dropped power to 97 % Sunday, no EN, reason for dop unk.
[ Power drop may have been due to severe rainstorms in area. ]

PA_Three_Mile_Is_1  @ 100 %, dropped power to 75 % Monday, no EN, reason for dop unk.


Region 2


AL_Browns_Ferry_3 @ 90 % since Saturday
[ This unit has not been able to achieve full power since exiting RFO Apr 03 ] ( used 45 of typ 43 days )

AL_Farley_2 @ 100 %  

GA_Hatch_2 @ 92 % recovering from an 8 day shutdown , no EN, reason for SD unk.



Region 3


IL_Clinton_1 @ 98 % achieved 99 % Saturday RFO restart ( used 21 of typ 20 )
[ For whatever reason this units normal thermal power operating range is 98-99% so we will call the RFO completed. ]

IL_Dresden_3 @ 98 %, no EN, reason for dop unk.


MI_Fermi_2 @ 100 % up from 73 % restart after 22 days down from
AUTOMATIC REACTOR SCRAM AND EMERGENCY CORE COOLING SYSTEM INJECTION |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53336



Region 4

AR_Arkansas_1 @ 69 % ; 65 % ; 53 % ; 53 % ; 37 % ; RFO restart ( used 44 of typ 35 )
[ unit is struggling to achieve full power after RFO ]

WA_Columbia_2 @ 65 % steady over weekend - transformer problem

TX_ComanchePeak_2 @ 100 % power dropped to 70 % Saturday, no EN, reason foor drop unk.

NE_Cooper_1 95 % power dropped Saturday, no EN, reason for drop unk.

AZ_PaloVerde_2 @ 100 % restarted over weekend from
AUTOMATIC REACTOR TRIP ON LOW DEPARTURE FROM NUCLEATE BOILING RATIO |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53424


----------------------------------------------------------------------------------------------------------------------------------------------------
[ There are currently 0 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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