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=Text=
=Text=
{{#Wiki_filter:.0'N Robles, Jesse From: King, Mark Sent: Tuesday, January 17, 2012 3:01 PM  
{{#Wiki_filter:.0'N Robles, Jesse From:                     King, Mark Sent:                     Tuesday, January 17, 2012 3:01 PM


==Subject:==
==Subject:==
IOEB Clearinghouse Screening Summary for Tuesday, January 17, 2012~~~NOTE: S Y IS OFFICIAL  
IOEB Clearinghouse Screening Summary for Tuesday, January 17, 2012
-***MA CONTA SENSITIV PROPRIETARY NRCINTERN USE 0 Y INFOR ATI DO N FORWARD TIONS OUTSIDE OF NR 0 FIRST OBT PERMI SION FROM ORIGINATOR Follow-uplOther Tasks: Eight (8)[Note -The information in this part of the Summary is often preliminary in nature and is provided to help IOEB staff communicate and track noteworthy items being followed up by either the Regions or HQ staff.]Outside of Scope Outside of Scope 8) EN 47590 -WOLF CREEK: NOTIFICATION OF UNUSUAL EVENT (NOUE) AND REACTOR TRIP DUE TO LOSS OF OFFSITE POWER UNUSUAL EVENT -(NOUE TERMINATED)
                  ~~~NOTE:                     S       Y IS OFFICIAL USE*)L--.                      -
See EN text: (Additional information) unit is currently in a stable condition (MODE 5). Unit obtained a safe shutdown condition and is currently stable in (MODE 5). Region performing an MD 8.3 reactive inspection risk evaluation.
        ***MA CONTA SENSITIV PROPRIETARY                       NRCINTERN       USE 0     Y INFOR   ATI DO N FORWARD                     TIONS OUTSIDE OF NR             0     FIRST OBT           PERMI SION FROM ORIGINATOR Follow-uplOther Tasks: Eight (8)
The following is a list of post trip occurrences:
[Note - The information in this part of the Summary is often preliminaryin nature and is provided to help IOEB staff communicate and track noteworthy items being followed up by eitherthe Regions or HQ staff.]
'Root Cause not well defined (licensee continues to investigate)
Outside of Scope
*Both 'A' & 'B' EDGs started/assumed safety loads'Decay heat removal via ASDs (atmospheric steam dumps)'Pressurizer PORV actuation (Residents following up on this indication)
 
*MDITDAFW Pumps functioned as expected'Essential Service Water (ESW) system experienced water hammer then subsequent leak in Containment Cooling (C) system'Containment cooling issue impacted 2 channels of source range detection (counts not tracking)'Emergency mod to cut hole in Chemistry Building bulkhead to route power cable to restore Chem Lab (facilitated Boron sampling)' Emergency mod to cut hole in Aux Building bulkhead to route power cable to sump pump (sump over flow due to TDAFW steam discharge line)'Condensate Storage Tank (CST) makeup challenges when available Diesel Driven Fire Pump failed to operate (Fire Truck staged as standby)'Facility lighting running on backup/emergency power'Train 'A' (vital) buses restored 1/2 hours after trip ('A' EDG secured)'Train 'B' (vital) buses supplied via 'B' EDG"'B' EDG air start (compressors) loss of power (EDGs remained functional)
Outside of Scope
"'B' EDG experienced a ground indication which cleared (Residents following up)'Switchyard:
: 8) EN 47590 - WOLF CREEK: NOTIFICATION OF UNUSUAL EVENT (NOUE) AND REACTOR TRIP DUE TO LOSS OF OFFSITE POWER UNUSUAL EVENT - (NOUE TERMINATED)
Three offsite (345 KV) lines remained functional (grid not suspected as initiator)
See EN text: (Additional information) unit is currently in a stable condition (MODE 5). Unit obtained a safe shutdown condition and is currently stable in (MODE 5). Region performing an MD 8.3 reactive inspection risk evaluation. The following is a list of post trip occurrences:
'Switchyard:
      'Root Cause not well defined (licensee continues to investigate)
Startup Transformer (SUT) oil samples were normal'Switchyard:
      *Both 'A' & 'B' EDGs started/assumed safety loads
Startup Transformer (SUT) oil samples were normal-Switchyard:
      'Decay heat removal via ASDs (atmospheric steam dumps)
345 KV breaker (60)/cabinet damage'Switchyard:
      'Pressurizer PORV actuation (Residents following up on this indication)
345 KV breaker/switch board inspections ongoing'Switchyard:
      *MDITDAFW Pumps functioned as expected
Work being performed on Unit Auxiliary Transformer (UAT) to backfeed 'B' buses; projected to be completed today (1/17)-Switchyard:
      'Essential Service Water (ESW) system experienced water hammer then subsequent leak in Containment Cooling (C) system
Event recorder to track switchyard transients out of service at time of event Forward to TRG Leads for Electrical Systems (Mathew/Wolfgang).
      'Containment cooling issue impacted 2 channels of source range detection (counts not tracking)
I&C (Rahn), SSW/UHS (Purciarello), EP (Schrader):
      'Emergency mod to cut hole in Chemistry Building bulkhead to route power cable to restore Chem Lab (facilitated Boron sampling)
assigned to Russ Haskell.Outside of Scope 2 Outside of Scope*(i. e., Screened/reviewed against LIC-401 criteria for initiating an "Issue for Resolution" (IFR), which is IOEB's process for conducting further evaluation of an issue to determine what, if any, additional actions should be taken to communicate and organizationally learn from OpE.)NTAI NOTESH-P MMARY NSCOFNIC NAL U, SE ON LM Attendees at Screening Meeting: Mark King Bob Bemardo Russell Haskell Rebecca Sigmon Harold Chernoff Al Issa, -NRO Doug Copeland -NRO Jay Patel -NRO Mary Wegner, RES -by phone 3}}
    ' Emergency mod to cut hole in Aux Building bulkhead to route power cable to sump pump (sump over flow due to TDAFW steam discharge line)
    'Condensate Storage Tank (CST) makeup challenges when available Diesel Driven Fire Pump failed to operate (Fire Truck staged as standby)
    'Facility lighting running on backup/emergency power
    'Train 'A' (vital) buses restored 1/2 hours after trip ('A' EDG secured)
    'Train 'B' (vital) buses supplied via 'B' EDG
    "'B' EDG air start (compressors) loss of power (EDGs remained functional)
    "'B' EDG experienced a ground indication which cleared (Residents following up)
    'Switchyard: Three offsite (345 KV) lines remained functional (grid not suspected as initiator)
    'Switchyard: Startup Transformer (SUT) oil samples were normal
    'Switchyard: Startup Transformer (SUT) oil samples were normal
    -Switchyard: 345 KV breaker (60)/cabinet damage
    'Switchyard: 345 KV breaker/switch board inspections ongoing
    'Switchyard: Work being performed on Unit Auxiliary Transformer (UAT) to backfeed 'B' buses; projected to be completed today (1/17)
    -Switchyard: Event recorder to track switchyard transients out of service at time of event Forward to TRG Leads for Electrical Systems (Mathew/Wolfgang). I&C (Rahn), SSW/UHS (Purciarello), EP (Schrader): assigned to Russ Haskell.
Outside of Scope 2
 
Outside of Scope
  *(i.e., Screened/reviewed against LIC-401 criteria for initiatingan "Issue for Resolution" (IFR), which is IOEB's process for conducting further evaluation of an issue to determine what, if any, additionalactions should be taken to communicate and organizationallylearn from OpE.)
NTAI NOTESH-P         MMARY         NSCOFNIC   NAL U,SE ON   LM Attendees at Screening Meeting:
Mark King Bob Bemardo Russell Haskell Rebecca Sigmon Harold Chernoff Al Issa, - NRO Doug Copeland - NRO Jay Patel - NRO Mary Wegner, RES - by phone 3}}

Latest revision as of 14:58, 4 November 2019

Email from M. King, NRR on Ioeb Clearinghouse Screening Summary for Tuesday, January 17, 2012
ML13246A374
Person / Time
Site: Wolf Creek Wolf Creek Nuclear Operating Corporation icon.png
Issue date: 01/17/2012
From: Mark King
Office of Nuclear Reactor Regulation
To:
References
FOIA/PA-2013-0273
Download: ML13246A374 (3)
v • d • e


Text

.0'N Robles, Jesse From: King, Mark Sent: Tuesday, January 17, 2012 3:01 PM

Subject:

IOEB Clearinghouse Screening Summary for Tuesday, January 17, 2012

~~~NOTE: S Y IS OFFICIAL USE*)L--. -

      • MA CONTA SENSITIV PROPRIETARY NRCINTERN USE 0 Y INFOR ATI DO N FORWARD TIONS OUTSIDE OF NR 0 FIRST OBT PERMI SION FROM ORIGINATOR Follow-uplOther Tasks: Eight (8)

[Note - The information in this part of the Summary is often preliminaryin nature and is provided to help IOEB staff communicate and track noteworthy items being followed up by eitherthe Regions or HQ staff.]

Outside of Scope

Outside of Scope

8) EN 47590 - WOLF CREEK: NOTIFICATION OF UNUSUAL EVENT (NOUE) AND REACTOR TRIP DUE TO LOSS OF OFFSITE POWER UNUSUAL EVENT - (NOUE TERMINATED)

See EN text: (Additional information) unit is currently in a stable condition (MODE 5). Unit obtained a safe shutdown condition and is currently stable in (MODE 5). Region performing an MD 8.3 reactive inspection risk evaluation. The following is a list of post trip occurrences:

'Root Cause not well defined (licensee continues to investigate)

  • Both 'A' & 'B' EDGs started/assumed safety loads

'Decay heat removal via ASDs (atmospheric steam dumps)

'Pressurizer PORV actuation (Residents following up on this indication)

  • MDITDAFW Pumps functioned as expected

'Essential Service Water (ESW) system experienced water hammer then subsequent leak in Containment Cooling (C) system

'Containment cooling issue impacted 2 channels of source range detection (counts not tracking)

'Emergency mod to cut hole in Chemistry Building bulkhead to route power cable to restore Chem Lab (facilitated Boron sampling)

' Emergency mod to cut hole in Aux Building bulkhead to route power cable to sump pump (sump over flow due to TDAFW steam discharge line)

'Condensate Storage Tank (CST) makeup challenges when available Diesel Driven Fire Pump failed to operate (Fire Truck staged as standby)

'Facility lighting running on backup/emergency power

'Train 'A' (vital) buses restored 1/2 hours after trip ('A' EDG secured)

'Train 'B' (vital) buses supplied via 'B' EDG

"'B' EDG air start (compressors) loss of power (EDGs remained functional)

"'B' EDG experienced a ground indication which cleared (Residents following up)

'Switchyard: Three offsite (345 KV) lines remained functional (grid not suspected as initiator)

'Switchyard: Startup Transformer (SUT) oil samples were normal

'Switchyard: Startup Transformer (SUT) oil samples were normal

-Switchyard: 345 KV breaker (60)/cabinet damage

'Switchyard: 345 KV breaker/switch board inspections ongoing

'Switchyard: Work being performed on Unit Auxiliary Transformer (UAT) to backfeed 'B' buses; projected to be completed today (1/17)

-Switchyard: Event recorder to track switchyard transients out of service at time of event Forward to TRG Leads for Electrical Systems (Mathew/Wolfgang). I&C (Rahn), SSW/UHS (Purciarello), EP (Schrader): assigned to Russ Haskell.

Outside of Scope 2

Outside of Scope

  • (i.e., Screened/reviewed against LIC-401 criteria for initiatingan "Issue for Resolution" (IFR), which is IOEB's process for conducting further evaluation of an issue to determine what, if any, additionalactions should be taken to communicate and organizationallylearn from OpE.)

NTAI NOTESH-P MMARY NSCOFNIC NAL U,SE ON LM Attendees at Screening Meeting:

Mark King Bob Bemardo Russell Haskell Rebecca Sigmon Harold Chernoff Al Issa, - NRO Doug Copeland - NRO Jay Patel - NRO Mary Wegner, RES - by phone 3

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