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NPS_Watch Jun 01, 2018
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.


There are 5 EN(s) today, 1 associated with power stations.

[]

NRC Event Notices for June 01, 2018    
https://www.nrc.gov/reading-rm/doc-colle...601en.html
 
[ All dates for May have been restored to the main selector page. ]
[ The page nav isn't working on todays page, nor on previously identified pages. ]

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

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

20180531 | MI_Fermi_2 | REACTOR WATER CLEANUP SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53435

"On May 31, 2018 at 1420 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 condition.

"At 1519 EDT, 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."

[ This is the same failure that was reported on 05/29, for the failure on the 27th, one day after they finally returned to full power. ]
[ It appears they couldn't figure out what was wrong the first time so they just started it up again and SURPRISE, it malfunctioned again. ]
[ Fermi is a GE BWR Mark 1 [ Fuku-go-boom ] containment. ]
[ The steam to drive the turbines comes directly from the RPV so it's rad contaminated. ]
[ RWCU is used to ensure the coolant water is 'clean', eg they remove as much rad, and other impurities ( rust ) as they can. ]
[ This unit was shutdown for 22 days starting April 14 for a tranformer problem. They also discovered a valve was malfunctioning. ]
[ After restart on May 07 it took 18 days to get to full power. ]

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

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

20180526 | MI_Fermi_2 | at 100 % thermal power

20180507 | MI_Fermi_2 | restarted

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

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


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

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

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

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

Region 1





Region 2


AL_Browns_Ferry_3 @ 92 % up from 90 % since Saturday
[ This unit has not been able to achieve full power since exiting RFO Apr 03 ] ( used 45 of typ 43 days )

NC_Brunswick_1 @ 52 %, no EN, reason for drop unk.

AL_Farley_2 @ 52 %, no EN, reason for drop unk.

VA_Surry_1 @ 70 % up from 5 % RFO restart ( used 40 of typ 25 )


Region 3



OH_Perry_1 @ 100 % up from 97 %, no EN, reason for drop unk.


Region 4

AR_Arkansas_1 @ 97 % ; RFO restart ( used 44 of typ 35 )
[ unit is struggling to achieve full power after RFO ]

WA_Columbia_2 @ 65 %  - transformer problem

NE_Cooper_1 @ 0 % ; 0 % ; 95 % power dropped Saturday, no EN, reason for drop unk.

CA_DiabloCanyon_1 @ 97 % up from 65 %, no EN, reason for drop unk.

MS_GrandGulf_1 @ 0 %, RFOD_055 of typical 50, overdue for RFO restart.

----------------------------------------------------------------------------------------------------------------------------------------------------

[ 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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