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NPS_Watch Jun 27, 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.

[ There are 3 ENs missing from the numerical sequence, 53473, 53474, 53475 ]

NRC Event Notices for June 27, 2018  
https://www.nrc.gov/reading-rm/doc-colle...627en.html
[ page nav working, event dates entered, event times not entered, ]
----------------------------------------------------------------------------------------------------------------------------------------------------
----------------- Power Reactor Event Notices
----------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Repeat post of 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.

"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

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 NE_Cooper_1 ]

20180626 | NE_Cooper_1 | CONTROL ROOM EMERGENCY FILTRATION SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53476

"On June 26, 2018, at 1630 CDT, the Control Room Emergency Filtration System (CREFS) was declared inoperable when Main Control Room Supply Fan SF-C-1B was discovered to have elevated vibrations that brought into question the ability to meet its mission time.

"CREFS is a single train safety system. Per 10 CFR 50.72(b)(3)(v)(D), an 8 hour report is required due to the fact that at the time of discovery this condition could have prevented the fulfillment of a safety function of an SSC [System Structure or Component] that is required to mitigate the consequences of an accident.

"The licensee has notified the NRC Senior Resident Inspector."

----------- [ 2018 event history for NE_Cooper ]

20180522 | NE_Cooper_1 | UNPLANNED PUBLIC NOTIFICATION DURING A DRILL |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53416

20180322 | NE_Cooper_1 | Update PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246

20180319 | NE_Cooper_1 | Update LOSS OF EMERGENCY NOTIFICATION TONE ALERT RADIO SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53261

20180319 | NE_Cooper_1 | unt at 100 % ( date of en update )
20180314 | NE_Cooper_1 | LOSS OF EMERGENCY NOTIFICATION TONE ALERT RADIO SYSTEM |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53261

20180312 | NE_Cooper_1 | Unit shutdown
20180310 | NE_Cooper_1 | HIGH PRESSURE COOLANT INJECTION SYSTEM DECLARED INOPERABLE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53253

20180306 | NE_Cooper_1 | PART 21 - UNDERSIZED PACKING GLANDS IN CERTAIN CRANE GATE VALVES |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53246

20180214 | NE_Cooper_1 | Retract DIESEL GENERATORS (DGs) DECLARED INOPERABLE DUE TO A COMMON ISSUE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53128

--------------------------------------------------------------------------------------------------
----------- [ 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. ]

Region 1


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


Region 2


AL_Browns_Ferry_3 @ 96 % ; 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 @ 2 % up from 0 % ; 0 % ; 0 % Sunday ; 15 % Saturday, no EN, reason for power drop unk.

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


Region 3

IA_DuaneArnold_1 @ 99 %, no EN, reason for power drop unk.

*MN_Prairie_Island_1 @ 100 % up from 98 %, no EN, reason for shutdown unk.


Region 4

*AR_Arkansas_1 @ 31 % up from 0 % no EN, reason for shutdown unk.
[ Attempting 3rd restart after RFO ]  

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

[ 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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