ML13066A331: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 18: Line 18:


=Text=
=Text=
{{#Wiki_filter:KewauneePower Kewaunee Power Station NRCRegionIII NRC Region IIIRegulatory Conference Loss of PPCS Indication For SPING RMs© 2007 Dominion A g enda g*O p enin g remarks pg*Event descriptionRltiifi*R egu l a t ory s i gn ifi cance*Conclusion
{{#Wiki_filter:Kewaunee Power Station NRC Region III Regulatory Conference Loss of PPCS Indication For SPING RMs
*Closing remarks 2© 2007 Dominion O p enin g Remarks pg Dominion is committed to preserving the health and ftfthbli sa f e t y o f th e pu bli c 3© 2007 Dominion O p enin g Remarks pg*Preliminar y Violation y*10 CFR 50.54 (q)(2) & 10 CFR 50.47 (b)(4)
© 2007 Dominion
-Kewaunee Power Station's unidentified loss of SPING indication on the PPCS and RADSERV stations precluded action to restore the ca p abilit y to classif y EALs RG1.1 pyy and RS1.1*Agree performance deficiency existed
*Differwithsignificanceoffinding
*Differ with significance of finding 4© 2007 Dominion Event Descri p tion p*Hardware failure
*RADSERV*Interface between SPING units and PPCS
*Additional Data Acquisition Modules lost
*Local SPING indication remained available
*Upon discovery of RADSERV failure, restoration completed same day 5© 2007 Dominion Re g ulator y Si g nificancegygRADSERV failure-Hardware issuePihdfilhb P rev i ous h ar d ware f a il ures h ave b een evaluated under 10CR5047(b)(8) 10 CR 50.47(b)(8)6© 2007 Dominion Re g ulator y Si g nificancegyg5.8 10 CFR 50.47(b)(8), Emergency Facilities and Equipment PLANNING STANDARD: *Adequate emergency facilities and equipment to support the emergency response are provided and maintained.
PS FUNCTIONS: 1.Adequate facilities are maintained to support emergency response.
2.Adequateequipmentismaintainedtosupport 2.Adequate equipment is maintained to support emergency response.
7 Re g ulator y Si g nificancegyg*NUREG 0654
*H. Emergency Facilities and Equipment
*5.b. radiological monitors, (e.g., process, area, emergency, effluent, wound and portable monitors and sampling equipment);
8© 2007 Dominion Re g ulator y Si g nificancegyg10 CFR 50.47 (b)(8)()()*White threshold
-Equipment necessary to implement the E-plan is not available or not functional
*Period of longer than 7 days from time of discover y y*Without Compensatory Measures 9© 2007 Dominion Re g ulator y Si g nificancegyg10 CFR 50.47 (b)(8)()()*Green threshold
-A significant amount of equipment necessary to implement the E-plan is not available or functional to the extent that any key ERO


member could not p erform his/her assi g ned pgfunctions, in the absence of compensatory
Agenda g
* Opening p     g remarks
* Event description
* Regulatory R    l t    significance i ifi
* Conclusion
* Closing remarks 2                            © 2007 Dominion


measures.10© 2007 Dominion Re g ulator y Si g nificancegygIMC0609Basis IMC 0609 BasisNot all hardware failures under control of  licensee Assessed by scope of outage from discover y*RADSERV failure*Hardware failure y*Restored same day of discovery 11© 2007 Dominion Re g ulator y Si g nificancegyg*Industr y OE y*Columbia Generating Station (05000397/2012502)FidiStddSiifi Fi n di ng St an d ar d Si gn ifi canceEffluent Monitor Classification Thresholds10 CFR 50.47(b)(4)WhiteInaccurate methods for assessing the offsite consequences of a radiological release were inaccurate10 CFR 50.47(b)(9)White Reactor Building High RangeExhaust monitor was unavailable 38 of 149 months and corrective actions were ineffective in restoring the availabilityandreliabilityofthe10 CFR 50.47(b)(8)Green -Licensee Identified 12© 2007 Dominionavailability and reliability of the monitor Re g ulator y Si g nificancegyg*Columbia Green Findin g g*10 CFR 50.47 (b)(8)
Opening p    g Remarks Dominion is committed to preserving the health and safety f t off the th public bli 3                            © 2007 Dominion
*FailedtoprovideandmaintainRXBuilding Failed to provide and maintain RX Building High Range Exhaust RM
 
*Unavailable 38 out of 149 months
Opening p      g Remarks
*Planning Standard determined to be degradedCittildl*C aus i n g po t en ti a l d e l a y s*Classification and radiological assessments 13© 2007 Dominion Re g ulator y Si g nificancegyg*Columbia White Findin g g*Finding*10 CFR 50.54(q) and 10 CFR 50.47(b)(4)
* Preliminaryy Violation
*Failure to maintain a standard EAL scheme
* 10 CFR 50.54 (q)(2) & 10 CFR 50.47 (b)(4)
*Inappropriately calculated and changed RM thresholdsforSiteAreaEmergencyand thresholds for Site Area Emergency and General Emergency 14© 2007 Dominion Additional Information
        - Kewaunee Power Stations unidentified loss of SPING indication on the PPCS and RADSERV stations precluded action to restore the capability p      y to classify y EALs RG1.1 and RS1.1
*Actual duration of vulnerabilit y y*Fast breaking LOCA  
* Agree performance deficiency existed
*RCS>350°Fon3/24/11at0300 RCS  350 F on 3/24/11 at 0300*Six days*ClassificationMethodology
* Differ with significance of finding 4                                                      © 2007 Dominion
*Classification Methodology
 
*Shift Manager perspective 15© 2007 Dominion Additional Information
Event Description p
*EAL scheme diversification
* Hardware failure
*NEI 99-01 Rev. 4
* RADSERV
-Fission product barrier challenges
* Interface between SPING units and PPCS
-Effluent ICs do not stand alone
* Additional Data Acquisition Modules lost
-EOPs and CSF reduce ambiguity and time
* Local SPING indication remained available
*NRC Regulatory Analysis of NEI 99-01
* Upon discovery of RADSERV failure, restoration completed same day 5                                              © 2007 Dominion
-Plant conditions more timely than radiologicalmeasurements radiological measurements 16© 2007 Dominion Root Cause Evaluation RC-1Absence of a programmatic requirement to pe ri od i ca ll y m o ni to r RAD S ER V a n d topeodcayotoSVad PPCS RC-2 RC 2System platform is obsolete and difficult tomaintain to maintain 17© 2007 Dominion Conclusions
 
*RADSERV failure was a hardware issue
Regulatory g      y Significance g
*Restored same day as discovery
RADSERV failure- Hardware issue P i Previous hardware h d        failures f il    have h    been b
*10CFR5047(b)(8)GreenFinding
evaluated under 10 CR 50.47(b)(8) 50 47(b)(8) 6                                          © 2007 Dominion
*10 CFR 50.47 (b)(8) Green Finding*Precedence of the Columbia finding 18© 2007 Dominion Closin g Remarks g*Dominion Acknowled g es g*Degraded planning standard
 
*ImportanceofequipmentassociatedwithEP Importance of equipment associated with EP*Violation has occurred
Regulatory g                y Significance g
*Correctiveactions Corrective actions 19© 2007 Dominion Closin g Remarks g Dominion is committed to preserving the health and safetyofthepublic safety of the public 20© 2007 Dominion}}
5.8 10 CFR 50.47(b)(8), Emergency Facilities and Equipment PLANNING STANDARD:
* Adequate emergency facilities and equipment to support the emergency response are provided and maintained.
PS FUNCTIONS:              1. Adequate facilities are maintained to support emergency response.
: 2. Adequate equipment is maintained to support emergency response.
7
 
Regulatory g        y Significance g
* NUREG 0654
* H. Emergency Facilities and Equipment
* 5.b. radiological monitors, (e.g., process, area, emergency, effluent, wound and portable monitors and sampling equipment);
8                                                      © 2007 Dominion
 
Regulatory g          y Significance g
10 CFR 50.47 (b)(8)
( )( )
* White threshold
        - Equipment necessary to implement the E-plan is not available or not functional
* Period of longer than 7 days from time of discovery y
* Without Compensatory Measures 9                                                        © 2007 Dominion
 
Regulatory g        y Significance g
10 CFR 50.47 (b)(8)
( )( )
* Green threshold
        - A significant amount of equipment necessary to implement the E-plan is not available or functional to the extent that any key ERO member could not p  perform his/her assigned g
functions, in the absence of compensatory measures.
10                                                     © 2007 Dominion
 
Regulatory g         y Significance g
IMC 0609 Basis Not all hardware     Assessed by scope of failures under control      outage from of licensee                    y discovery
* RADSERV failure
* Restored same day
* Hardware failure      of discovery 11                                               © 2007 Dominion
 
Regulatory g                     y Significance g
* Industryy OE
* Columbia Generating Station (05000397/2012502)
Fi di Finding                                St d d Standard          Si ifi Significance Effluent Monitor Classification       10 CFR 50.47(b)(4) White Thresholds Inaccurate methods for assessing the   10 CFR 50.47(b)(9) White offsite consequences of a radiological release were inaccurate Reactor Building High Range            10 CFR 50.47(b)(8) Green - Licensee Identified Exhaust monitor was unavailable 38 of 149 months and corrective actions were ineffective in restoring the availability and reliability of the monitor 12                                                                                     © 2007 Dominion
 
Regulatory g       y Significance g
* Columbia Green Findingg
* 10 CFR 50.47 (b)(8)
* Failed to provide and maintain RX Building High Range Exhaust RM
* Unavailable 38 out of 149 months
* Planning Standard determined to be degraded
* Causing C i potential t ti l delays d l
* Classification and radiological assessments 13                                                       © 2007 Dominion
 
Regulatory g       y Significance g
* Columbia White Findingg
* Finding
* 10 CFR 50.54(q) and 10 CFR 50.47(b)(4)
* Failure to maintain a standard EAL scheme
* Inappropriately calculated and changed RM thresholds for Site Area Emergency and General Emergency 14                                                     © 2007 Dominion
 
Additional Information
* Actual duration of vulnerabilityy
* Fast breaking LOCA
* RCS > 350 350°F F on 3/24/11 at 0300
* Six days
* Classification Methodology
* Shift Manager perspective 15                                     © 2007 Dominion
 
Additional Information
* EAL scheme diversification
* NEI 99-01 Rev. 4
        - Fission product barrier challenges
        - Effluent ICs do not stand alone
        - EOPs and CSF reduce ambiguity and time
* NRC Regulatory Analysis of NEI 99-01
        - Plant conditions more timely than radiological measurements 16                                               © 2007 Dominion
 
Root Cause Evaluation RC-1 Absence of a programmatic requirement to pe periodically od ca y monitor o to RADSERV S V aand d PPCS RC 2 RC-2 System platform is obsolete and difficult to maintain 17                                         © 2007 Dominion
 
Conclusions
* RADSERV failure was a hardware issue
* Restored same day as discovery
* 10 CFR 50.47 50 47 (b)(8) Green Finding
* Precedence of the Columbia finding 18                                         © 2007 Dominion
 
Closing g Remarks
* Dominion Acknowledges  g
* Degraded planning standard
* Importance of equipment associated with EP
* Violation has occurred
* Corrective actions 19                                             © 2007 Dominion
 
Closing g Remarks Dominion is committed to preserving the health and safety of the public 20                             © 2007 Dominion}}

Revision as of 21:13, 4 November 2019

Regulatory Conference Presentation 3-12-2013
ML13066A331
Person / Time
Site: Kewaunee Dominion icon.png
Issue date: 03/07/2013
From:
Dominion Energy Kewaunee
To:
NRC/RGN-III/DRMA
References
EA-12-272
Download: ML13066A331 (20)
v • d • e


Text

Kewaunee Power Station NRC Region III Regulatory Conference Loss of PPCS Indication For SPING RMs

© 2007 Dominion

Agenda g

  • Opening p g remarks
  • Event description
  • Regulatory R l t significance i ifi
  • Conclusion
  • Closing remarks 2 © 2007 Dominion

Opening p g Remarks Dominion is committed to preserving the health and safety f t off the th public bli 3 © 2007 Dominion

Opening p g Remarks

  • Preliminaryy Violation

- Kewaunee Power Stations unidentified loss of SPING indication on the PPCS and RADSERV stations precluded action to restore the capability p y to classify y EALs RG1.1 and RS1.1

  • Agree performance deficiency existed
  • Differ with significance of finding 4 © 2007 Dominion

Event Description p

  • Hardware failure
  • RADSERV
  • Interface between SPING units and PPCS
  • Additional Data Acquisition Modules lost
  • Local SPING indication remained available
  • Upon discovery of RADSERV failure, restoration completed same day 5 © 2007 Dominion

Regulatory g y Significance g

RADSERV failure- Hardware issue P i Previous hardware h d failures f il have h been b

evaluated under 10 CR 50.47(b)(8) 50 47(b)(8) 6 © 2007 Dominion

Regulatory g y Significance g

5.8 10 CFR 50.47(b)(8), Emergency Facilities and Equipment PLANNING STANDARD:

  • Adequate emergency facilities and equipment to support the emergency response are provided and maintained.

PS FUNCTIONS: 1. Adequate facilities are maintained to support emergency response.

2. Adequate equipment is maintained to support emergency response.

7

Regulatory g y Significance g

  • H. Emergency Facilities and Equipment
  • 5.b. radiological monitors, (e.g., process, area, emergency, effluent, wound and portable monitors and sampling equipment);

8 © 2007 Dominion

Regulatory g y Significance g

10 CFR 50.47 (b)(8)

( )( )

  • White threshold

- Equipment necessary to implement the E-plan is not available or not functional

  • Without Compensatory Measures 9 © 2007 Dominion

Regulatory g y Significance g

10 CFR 50.47 (b)(8)

( )( )

  • Green threshold

- A significant amount of equipment necessary to implement the E-plan is not available or functional to the extent that any key ERO member could not p perform his/her assigned g

functions, in the absence of compensatory measures.

10 © 2007 Dominion

Regulatory g y Significance g

IMC 0609 Basis Not all hardware Assessed by scope of failures under control outage from of licensee y discovery

  • RADSERV failure
  • Restored same day
  • Hardware failure of discovery 11 © 2007 Dominion

Regulatory g y Significance g

  • Industryy OE

Fi di Finding St d d Standard Si ifi Significance Effluent Monitor Classification 10 CFR 50.47(b)(4) White Thresholds Inaccurate methods for assessing the 10 CFR 50.47(b)(9) White offsite consequences of a radiological release were inaccurate Reactor Building High Range 10 CFR 50.47(b)(8) Green - Licensee Identified Exhaust monitor was unavailable 38 of 149 months and corrective actions were ineffective in restoring the availability and reliability of the monitor 12 © 2007 Dominion

Regulatory g y Significance g

  • Columbia Green Findingg
  • Failed to provide and maintain RX Building High Range Exhaust RM
  • Unavailable 38 out of 149 months
  • Planning Standard determined to be degraded
  • Causing C i potential t ti l delays d l
  • Classification and radiological assessments 13 © 2007 Dominion

Regulatory g y Significance g

  • Columbia White Findingg
  • Finding
  • Failure to maintain a standard EAL scheme
  • Inappropriately calculated and changed RM thresholds for Site Area Emergency and General Emergency 14 © 2007 Dominion

Additional Information

  • Actual duration of vulnerabilityy
  • RCS > 350 350°F F on 3/24/11 at 0300
  • Six days
  • Classification Methodology
  • Shift Manager perspective 15 © 2007 Dominion

Additional Information

  • EAL scheme diversification

- Fission product barrier challenges

- Effluent ICs do not stand alone

- EOPs and CSF reduce ambiguity and time

- Plant conditions more timely than radiological measurements 16 © 2007 Dominion

Root Cause Evaluation RC-1 Absence of a programmatic requirement to pe periodically od ca y monitor o to RADSERV S V aand d PPCS RC 2 RC-2 System platform is obsolete and difficult to maintain 17 © 2007 Dominion

Conclusions

  • RADSERV failure was a hardware issue
  • Restored same day as discovery
  • Precedence of the Columbia finding 18 © 2007 Dominion

Closing g Remarks

  • Dominion Acknowledges g
  • Degraded planning standard
  • Importance of equipment associated with EP
  • Violation has occurred
  • Corrective actions 19 © 2007 Dominion

Closing g Remarks Dominion is committed to preserving the health and safety of the public 20 © 2007 Dominion

Retrieved from "https://kanterella.com/w/index.php?title=ML13066A331&oldid=2066915"