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NDE Program update

Joe Donahue, Progress EnergyChairman, NDE APCGreg Selby, EPRIDirector, NDE

NRC/Industry Management MeetingJune 21. 2011

EPRI NDE advisory structure

- ~ ~ ~ ~-' V V - r: +;Nuclear Power - Co "mitte

Council Committee

Action PlanCommittee NDEAP VPs, senior managers

------------------------------------------------------------------ I -----------------------------------------------------------------

IntegrationCommittee

II] - I-I Supervisors and seniortechnical staff

TechnicalAdvisoryCommittees

I I IIC members

Research Compliance Technology Reliability

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Contents

*RES/EPRI MOU

* Cast stainless steel

* Dissimilar metal welds NDE reliability

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Regulatory collaboration

* Memorandum of Understanding

- Between EPRI and RES

- Several topical Addenda

* Addendum on NDE

- Several Attachments

* Visual examination

* Cast austenitic stainless steel

o UT/RT for repairs, replacements, and modificationse Documentation of the basis for Appendix VII

e RMSE - ID pipe examinations depth sizing

-Biweekly coordination call

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Regulatory collaboration

*Addendum on NDE- Several Attachments

Visual examination

- RES conducting a round robin test on reliability ofremote visual examination for detecting cracks

- Invited industry collaboration

-Phase 1 complete- 'trial run' round robin-Phase 2 in 2012- round robin including qualified,

field examination teams

-Phase 3 in 2013 - opportunity for trying advancedtechnologies

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Cast stainless steel

o NDE is difficult but properties are good

o CASS is subject to thermal aging embrittlement

o EPRI is developing a PFM approach

- Determine the flaw size that NDE should detect

- Basis for Code changes allowing IWB-3000-style flawacceptance criteria

- Help resolve open license renewal issue faced by Wplants regarding commitments in GALL XI.M12

o EPRI contractor has requested RES provide access tounpublished background data held at ANL

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Cast stainless steel

" RES proposed a trade

- EPRI provide all of the resulting work generated usingthe ANL data - e.g., all supporting documents andcalculations

" Industry is receptive - transmit data to RES at end 2011

" Now discussing:

- Definition of what RES will receive

- Legal aspects

IP* How to transmit the information to NRC (RES

proposed modifying the MOU)

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Dissimilar metal weld NDE reliability

9 ASME Section XI, Appendix VIII qualified procedures are capableof performing high quality reliable examinations

Numerous examinations have been performed and the largemajority of flaws detected were effectively evaluated, repairedor mitigated

* Industry has several completed, executing, and proposedactivities to support continuous improvement

- Technical capability of the workforce

- Smoothness of industry response

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Industry actions for continuous improvement

Completed actions- 1) Dissimilar metal weld guideline was developed and published in June 2009

Nondestructive Evaluation: Guideline for Conducting Ultrasonic Examinations ofDissimilar Metal Welds; product ID 1018181; public

- 2) Several similar and dissimilar metal weld samples have been fabricated thatcontain embedded flaws; available for practice and training

- 3) NDE capability for embedded fabrication flaws was evaluated and thedocumented to support changes to the Section III acceptance criteriaAdvanced Nuclear Technology: Reduction of American Society of MechanicalEngineers Ill Weld Fabrication Repairs - Fitness for Purpose; product ID 1019217;public

- 4) Publishing OE annuallyNondestructive Evaluation: Dissimilar Metal Piping Weld Examination Guidance Volume8; product ID 1021149

- 5) Supported xLPR with statistical analysis of PDI qualification databasesMaterials Reliability Program: Development of Probability of Detection Curves forUltrasonic Examination of Dissimilar Metal Welds (MRP-262); product ID 1019088;public

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Industry actions for continuous improvement

Current actions- 1) Industry is preparing a Guideline for evaluating ultrasonic indications

Technical report September 2011, publicSeries of implementation workshops beginning Fall 2011

- 2) Continue to work with NRC on evaluating data in PDI databases" Currently working with RPV (for 10CFR50.61a) and weld overlay data• Future collaborations will be considered if a clear need is identified

- Data is secure and great care is needed to preserve integrity3) Continue to gather OE and transmit lessons learned to the fleetAnnual updates

" Future actions (proposed for funding in 2012)- 1) Embedded flaw NDE computer based training course- 2) Develop secure, QA'd database platform and interface to support future

statistical analyses of qualification databases

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Industry actions for continuous improvement

Smoothness of industry response- In isolated instances industry (utilities, Issue Programs, NRC) have

expended significant resources on ultimately inconsequentialconditions" Issue Programs and NRC begin closely monitoring before the NDE

procedure has been implemented fully

" Everyone reacts with too much energy, too quickly

- We have a 'red flag' response when we see the yellow flag

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Weld Inspection Task Flow* Non-relevant indication: Geometry, Weld

interface, etc.

* Relevant indication: Fabrication defect or

in-service defectP.1 A wfi('o I I ý I

Nlof Itoy

E , i_Nonrelevant

Indication

IPotentialRelevant

Indication

PotentialRelevant

Indication

-Gather supInformation

-Execute allanalysis atiprocedure

-Execute NEcontlngenc

NonralevantIndication

porting

the 7 Finalspe In the iK Results i'

Fabricationdefect

Was detected, 7 "\evaluated and . Section III N

accepted durlng- reords Zconstruction

In-service defect b

EPRI Report 101818NDE: Guideline for UT ofDissimilar Metal Welds

INonreleventIndication

I

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Not presentin records

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Planning Initial Examination

03

CNNVI.. .. ..

Investigate the indication

i Nominali i ] Possibility of In-service defect or unallowable fabrication defect

Confirmed in-service defect or unallowable fabrication defect

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Together...Shaping the Future of Electricity

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