ML101650245

06/02/2010 Meeting Presentation GL 2008-01 Resolution Projected Outlook.

ML101650245
Person / Time
Site:	Diablo Canyon
Issue date:	06/07/2010
From:	Lin A PWR Owners Group
To:	Office of Nuclear Reactor Regulation
Gall J, NRR/DSS/SRXB 301-415-3253
Shared Package
ML101650192	List: ML101650245
References
GL-08-001
Download: ML101650245 (5)

Text

GL 2008 GL 2008--01 Resolution 01 Resolution Projected Out Look Projected Out Look Anderson Lin

Anderson LinPWROG Technical LeadPWROG Technical LeadDiablo Canyon Power Plant Diablo Canyon Power Plant GL 2008GL 2008--01 Resolution Projected Out Look 01 Resolution Projected Out LookVoid Transport (Purdue Test) -7/31/10Water Hammer, Void in RCS, PIRT, Operability Flow ChartTSTFSubmittal -6/30Guidance Based on RAIsTraining Models (Op, Eng'g, Maintenance)

Roadmap Project (2010)(Pump Void Acceptance Criteria)1.Industry Webcast -6/17 2.Survey Distribution -6/25 3.Survey Completion -7/27 4.Expert Panel -8/25 & 26 5.Possible Completion -12/31NEI 09-10 Revision 1-December 2010 Simplified Equation

-8/161.Dynamic Venting2.Leakage Characterization 3.Training 4.System / Operation Modes 5.Surveillance Frequency 6.Void Measurement Guidance Based on RAIs Guidance Based on RAIsTopic TopicWhere / Plan to AddressWhere / Plan to AddressDynamic Venting Dynamic Venting Gas Transport ReportGas Transport ReportPump Void Acceptance Pump Void Acceptance Criteria Criteria Simplified Equation / RoadmapSimplified Equation / Roadmap Leakage Characterization Leakage Characterization NEI 09 NEI 09--10 Rev. 110 Rev. 1SI Flow Delay Due to Gas SI Flow Delay Due to Gas Voids Voids NEI 09 NEI 09--10 Rev. 110 Rev. 1 OG OG--08 08--293 293 / BWROG

/ BWROG--09034 09034PUMP PUMP NPSHrNPSHrAPC letter / GSIAPC letter / GSI-

-191 191Training Training INPO INPO Guidance Based on RAIs (Guidance Based on RAIs (con't con't))Topic TopicWhere / Plan to AddressWhere / Plan to AddressSystem / Operation Modes System / Operation ModesNEI 09 NEI 09--10, Rev. 110, Rev. 1 Surveillance FrequencySurveillance FrequencyNEI 09 NEI 09--10, Rev. 110, Rev. 1Void Measurement Void MeasurementNEI 09 NEI 09--10, Rev. 110, Rev. 1Vortex Vortex WCAP WCAP--11916 on Mid11916 on Mid--Loop Loop Physical Pump MonitoringPhysical Pump MonitoringNEI 09 NEI 09--10, Rev. 110, Rev. 1 TSTF TSTF Possible Possible Dynamic Venting Guidance Dynamic Venting GuidanceFlush Out Most of Gas Pockets Flush Out Most of Gas Pockets T =

T =

• ( V

• ( V--system / Q )system / Q )

Where Where T T: The minimum time required to flush out voids: The minimum time required to flush out voids V V-

-system  : Downstream system water volumesystem  : Downstream system water volume Q Q: Dynamic flow rate

Dynamic flow rate

Number of sweeps

Number of sweeps of system as of system as function function of Fr.

of Fr.No credit for dynamic venting for Fr less than 0.8

No credit for dynamic venting for Fr less than 0.8

= 20 for 0.8

= 20 for 0.8 <

<Fr < 1.0 Fr < 1.0= 10 for 1.0

= 10 for 1.0 <

<Fr < 1.2 Fr < 1.2= 5 for 1.2

= 5 for 1.2 <

<Fr < 1.5 Fr < 1.5= 3 for 1.5

= 3 for 1.5 <

<Fr < 2.0 Fr < 2.0= 2 for 2.0

= 2 for 2.0 <

<Fr Fr