• Thank you for visiting the Cafe Rad Lab Forum
  • We present & discuss radiation health, science & news
  • To keep you informed about vital nuke information.
Hello There, Guest! Login Register


NPS_Watch May 15, 2019
#1
The Daily Dose - Exposing the nuclear power industry while the nuclear power industry exposes you.

There are 3 EN(s) today, 1 associated with power stations.

[  ]

NRC Event Notices for May 15, 2019 |
https://www.nrc.gov/reading-rm/doc-colle...515en.html

[  ]

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

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

20190515 | TX_ComanchePeak_2 | VOLTAGE TRANSIENT DUE TO LOSS OF OFFSITE SWITCHYARD |
https://www.nrc.gov/reading-rm/doc-colle...ml#en54064

"At 2151 CDT, on 14 May 2019,
Comanche Peak Nuclear Power Plant (CPNPP) experienced a voltage transient within the onsite
138kV switchyard due to the loss of one of the offsite switchyards
supplying power to the CPNPP 138kV switchyard.

The reduction in safeguards bus voltage due to the transient caused the Unit 2 safeguard busses
to load shed and perform a slow transfer to power supplied from 345kV transformer XST2A.

Unit 2 was subjected to actuation of both blackout sequencers causing an automatic start of both
motor driven Auxiliary Feedwater (AFW) pumps as well as the turbine-driven AFW pump.


"No emergency diesel generators started by design.
All AFW pumps have been returned to standby status.
All other safety systems functioned as designed.
Unit 1 is currently defueled, and was unaffected by this event.

"The licensee has notified the NRC resident inspector."


----------- [ 2019 event history for TX_ComanchePeak ]

20190302 | TX_ComanchePeak_2 | REACTOR TRIP DUE TO FEEDWATER ISOLATION VALVE CLOSURE |
https://www.nrc.gov/reading-rm/doc-colle...ml#en53906


20190123 | TX_ComanchePeak_2 | full power
20190116 | TX_ComanchePeak_2 | Shutdown, no EN

20190115 | TX_ComanchePeak_2 | Exit RFO ( 37 / 41 )  Stator Replacement planned
20181208 | TX_ComanchePeak_2 | Begin RFO ( 01 / 41 )  Stator Replacement planned


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

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


----------- [ 2019 event history for


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

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


----------- [ 2019 event history for


----------------------------------------------------------------------------------------------------------------------------------------------------
----------- [ Current event for
----------- [ 2019 event history for
[ no previous ENs for this site in 2019 ]
----------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------
------------[ PART 21 ] - These ENs are for issues that involve multiple site/reactor units
----------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------
------------Other reactor info from daily power tracking https://www.nrc.gov/reading-rm/doc-colle...atus/2019/
-----------------------------------------------------------------------------------------------------------------

[  ]

Region 1
 
CT_Millstone_3 @ 30 % up from 0 % Tuesday
[ Exit RFO ( 33 / 33 ) RFO plan start 20190418 ]

MA_Pilgrim_1 @ 87 % down from 92 % [ coastdown to permanent closure ]
[ as of today there are only 17 operating days left. ]

NJ_Salem_1 @ 0 % [ RPV OPEN ( 33 / 28 ) ] RFO started early



Region 2

AL_Browns_Ferry_2 @ 89 % up from 87 % down from 89 % Sunday; 89 % Saturday
[ Exit RFO ( 39 / 25 ) ] power uprate testing, missed planned restart date

AL_Farley_2 @ 93 % unch from 93 % down from 100 %
[ no EN, unk reason for powr drop. ]

FL_Saint_Lucie_1 @ 0 % since 20190425
 AUTOMATIC REACTOR TRIP DUE TO TURBINE GENERATOR TRIP |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en54027

TN_Watts_Bar_2 @ 0 % [ RPV OPEN ( 33 / 26 ) 20190413 ] missed planned restart date



Region 3

IL_Clinton_1 @ 98 % unch from 98 % down from 99 % unch from 99 % Sunday; 98 % Saturday
[ 98-99 % are this units normal thermal power range. ]

MI_DC_Cook_1 @ 47 % unch from 47 % unch from 47 % down from 48 % Sunday; 46 % Saturday
[ Exit RFO ( 55 / 90 ) 20190306  ]

IL_Dresden_2 @ 70 % up from 58 % up from 0 % down from 5 % Sunday; 18 % Saturday
[ no EN, unk reason for shutdown. ]
 [ was recovering from ]
 AUTOMATIC REACTOR SCRAM DUE TO TURBINE TRIP |
 https://www.nrc.gov/reading-rm/doc-colle...ml#en54054

MN_Monticello_1 @ 52 % up from 35 % up from 0 %  
[ Exit RFO ( 30 / 30 ) 20190413 ]



Region 4

MO_Callaway_1 @ 0 % [ RPV CLOSED ( 44 / 42 ) 20190401; no coastdown 24hr SD

WA_Columbia_2 @ 0 % down from 13 % up from 0 % Sunday; 0 % Saturday
[ Begin RFO ( 02 / 31 ) Expect RPV OPEN Friday ] plnd start 20190515; started early  

TX_ComanchePeak_1 @ 0 % [ RPV OPEN ( 24 / 40 ) | 20190407 ] missed planned start date ]

MS_GrandGulf_1 @ 0 % down from 100 % Monday; 100 % Sunday; 0 % Saturday  
[ no EN, unk reason for power drop. ]

LA_RiverBend_1 @ 94 % up from 44 % up from 0 % down from 3 % Sunday; 12 % Saturday
[ Exit RFO ( 42 / 34 ] 2nd restart in progress; 1st restart failed; missed planned restart date
[ no EN, unk reason for shutdown. ]


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

[ There is/are currently 03 unit(s) with the RPV OPEN - ref the 2019 Spring Refueling Outage Schedule and Status ]

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


Forum Jump:


Browsing: 1 Guest(s)