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NPS_Watch Jun 26, 2018
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

There are 3 EN(s) today, 2 associated with power stations.

[  ]

NRC Event Notices for June 26, 2018  
https://www.nrc.gov/reading-rm/doc-colle...626en.html
[ page nav working, event dates entered, event times not entered, not posted until 1015 am EDT ]
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----------------- Power Reactor Event Notices
----------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for TX_ComanchePeak_2 ]

20180626 | TX_ComanchePeak_2 | MAIN STEAM LINE RADIATION MONITOR DETERMINED TO BE NON-FUNCTIONAL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53472

"At time 0003 [CDT], Main Steamline Radiation Monitor 2-RE-2326 (Main Steam line 2-02) reading spiked and [was] declared non-functional.

[ Nuke industry SOP if a rad detector shows a large increase it must be wrong, turn it off. ]

"With this radiation monitor non-functional, all of the emergency action levels for a steam generator tube rupture in steam generator 2-02 could neither be evaluated nor monitored.

This unplanned condition is reportable as a loss of assessment capability per 10CFR50.72(b)(3)(xiii).

"Comanche Peak Nuclear Power Plant (CPNPP) has assurance of steam generator integrity and fuel cladding integrity and there is negligible safety significance to the current condition [with respect to the] public health and safety perspective.

"Additionally, compensatory measures are in place to assure adequate monitoring capability is available to implement the CPNPP emergency plan in the unlikely event of challenges to the steam generator or fuel cladding.
The N16 radiation monitor serves as a backup with alarm function and Radiation Protection technicians have been briefed on taking local readings with a Geiger-Mueller tube on MSL 2-02.

"Corrective actions are being pursued to restore 2-RE-2326 to functional status.

"The NRC Resident Inspector has been notified."


----------- [ 2018 event history for TX_ComanchePeak ]

20180523 | TX_ComanchePeak_2 | LOSS OF EMERGENCY ASSESSMENT CAPABILITY |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53423
Main Steamline Radiation Monitor 2-RE-2328 (Main Steamline 2-04)

20180523 | TX_ComanchePeak_1;2 | PART 21 - WEAR OF THERMAL SLEEVE IN WESTINGHOUSE CONTROL ROD DRIVE MECHANISMS |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53422

20180503 | TX_ComanchePeak_2 | LOSS OF EMERGENCY ASSESSMENT CAPABILITY |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53380
Radiation Monitor 2-RE-4270 (Service Water Train B to Discharge Canal Rad Monitor), at 1220 CDT, several other Unit 2 Radiation Monitors

20180321 | TX_ComanchePeak_1;2 | Retract PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857

20180215 | TX_ComanchePeak_1;2 | MAIN STEAM LINE RADIATION MONITOR DETERMINED TO BE NON FUNCTIONAL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53212
Main Steamline Radiation Monitor 2-RE-2326 (Main Steamline 2-02)

20180131 | TX_ComanchePeak_1;2 | Update PART 21 - DEFECTIVE SAFETY RELATED VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en52857

20180106 | TX_ComanchePeak_2 | MAIN STEAM LINE RADIATION MONITOR DETERMINED TO BE NON-FUNCTIONAL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53154
main steamline radiation monitor 2-RE-2326 (Main Steamline 2-02)

20180102 | TX_ComanchePeak_2 | UNPLANNED LOSS OF EMERGENCY RESPONSE EQUIPMENT DUE TO LOSS OF PLANT COMPUTER |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53143


--------------------------------------------------------------------------------------------------
----------- [ Current event for CA_DiabloCanyon_2 ]

20180625 | CA_DiabloCanyon_2 | FITNESS-FOR-DUTY TEST POSITIVE FOR NON-LICENSED SUPERVISOR |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53471

At 1029 PDT on June 25, 2018, Pacific Gas and Electric determined a non-licensed employee supervisor had a confirmed positive for alcohol during a random fitness-for-duty test.

The employee's access to the plant has been terminated.

The NRC Resident Inspector has been notified

----------- [ 2018 event history for CA_DiabloCanyon ]

20180524  | CA_DiabloCanyon_1;2 | PART 21 - WEAR OF THERMAL SLEEVE IN WESTINGHOUSE CONTROL ROD DRIVE MECHANISMS |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53422

20180424 | CA_DiabloCanyon_2 | CONTAINMENT RADIATION MONITORS INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53361


20180322 | CA_DiabloCanyon_2 | Exit RFO
20180211 | CA_DiabloCanyon_2 | Begin RFO


20180125_1901_PST | CA_DiabloCanyon_1 | OFFSITE NOTIFICATION DUE TO SCREEN WASH PUMP MOTOR FIRE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53184


--------------------------------------------------------------------------------------------------
----------- [ Current event for
----------- [ 2018 event history for
--------------------------------------------------------------------------------------------------
----------- [ Part 21 Notice ]
----------------------------------------------------------------------------------------------------------------------------------------------------
----------------- Other reactor info from daily power tracking
-----------------------------------------------------------------------------------------------------------------

[ the asterisk signifies that an uptick in rad detection at nearby EPA radmon stations was observed on NETC. ]
[ 06/25 Working on data gathering to present findings, hope to provide more detail later on today. ]
[ 06/26 Was unable to complete. Run NETC animation. ]

Region 1


*MA_Pilgrim_1 @ 90 % down from 98 % ; 98 % ; 90 % on Saturday, no EN, reason for power drop unk.



Region 2


AL_Browns_Ferry_3 @ 96 % ; 96 % ; 94 % ; 94 % ; 94 % ; 91 % ; 79 % : 52 % ; 52 % saturday, no EN, reason for power drop unk.  
[ Unit unable to achieve full power since exiting RFO Apr 03 ] ( used 45 of typ 43 days )

NC_Brunswick_2 @ 0 % reported 0 % Sunday and 15 % Saturday, no EN, reason for power drop unk.

*TN_Watts_Bar_2 @ @ 0 % ; 0 % ; 0 % ; 0 % ; 85 % ; 60 %, no EN, reason for original power drop unk. [ see EN above ]



Region 3

*MN_Prairie_Island_1 @ 98 %, no EN, reason for shutdown unk.



Region 4

*AR_Arkansas_1 @ 0 % no EN, reason for shutdown unk.
Last weeks power reports 68 % ; 65 % ; 40 % ; 2 % ; 0 % ; 0 %,
recovering from MANUAL REACTOR TRIP DURING STARTUP     
https://www.nrc.gov/reading-rm/doc-colle...ml#en53459

TX_SouthTexas_1 @ 100 % up from 62 %, no EN, reason for pwer drop unk.

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

[ 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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