ML20132E570

Notification of 970115 Meeting W/Licensee in Rockville,Md to Discuss Nondestructive Exam Qualification Efforts to Date in Support of Staff Review of Amend Request That Would Allow Use of Framatome Electrosleeving Technology

ML20132E570
Person / Time
Site:	Callaway
Issue date:	12/17/1996
From:	Thomas K NRC (Affiliation Not Assigned)
To:	Bateman W NRC (Affiliation Not Assigned)
References
NUDOCS 9612230331
Download: ML20132E570 (6)

Text

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NUCLEAR REGULATORY COMMISSION k *****p WASHINGTON. D.C. 2006tW1001 8 December 17, 1996 MEMORANDUM T0: William H. Bateman, Director Project Directorate IV-2 Division of Reactor Projects III/IV FROM:

h KrTstine M. Thomas, Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV i

SUBJECT:

FORTHCOMING MEETING WITH UNION ELECTRIC COMPANY REGARDING i CALLAWAY PLANT, UNIT 1 i DATE & TIME: January 15, 1997 1:00 p.m. - 4:00 p.m.

J LOCATION: U.S. Nuclear Regulatory Commission 11555 Rockville Pike l i

Rockville, Maryland Room 0-6B11 PURPOSE: To discuss the nondestructive examination qualification efforts to date in support of the staff's review of the amendment request that would allow the use of the Framatome electrosleeving technology for sleeving steam generator tubes at the Callaway Plant. A meeting agenda is attached.

PARTICIPANTS *: NRC UNION ELECTRIC T. Sullivan T. Herrmann G. Hornseth E. Kahl i P. Rush l C. Beardslee K. Thomas Docket No. 50-483

Attachment:

Agenda une CSIS I -

cc w/att: See next page tu.saw CONTACT: Kristine M. Thomas 415-1362 l

• Meetings between NRC technical staff and applicants or licensees are open for l interested members of the public, petitioners, intervenors, or other parties to attend as observers pursuant to " Commission Policy Statement on Staff Meetings Open to the Public" 59 Federal Reaister 48340, 9/20/94. A portion of the meeting may involve proprietary information. Consequently, those portions will not be open to the public. Anyone wishing to attend this meeting should contact Kristine M. Thomas by January 13, 1997, at (301) 415-1362. g 230084 \ \

9612230331 961217 PDR ADOCK 05000403 V PDR

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6- Attachment b MEETIM WITH UNION ELECTRIC COMPANY l 4

TO DISCUSS TEC W ICAL SPECIFICATION AMEWMENT REQUEST i TO ALLOW SLEEVIM 0F STEAM GENERATORS AT THE CALLAWAY PLANT  !

-USIM THE FRAMATOME ELECTROSLEEVIM TECHNOLOGY j MEETIM AGEWA i i  !

1 l' l. Status of Review i

'The staff recognizes that a metallurgical argument has been presented )

stating that parent tube indications would not be expected to propagate.into  !

l the nickel sleeve. However, metallurgy alone cannot be used to assure  !

future integrity of steam generator tubes. Nondestructive examination (NDE)

{ must also be utilized to determine post-installation quality and continued

sleeve. integrity. Therefore, to allow the staff to move forward with its review of the Framatome electrosleeving technology, NDE qualification must i be completed and complete answers must be provided to the questions i contained in the request for additional information (RAI) dated July 25, i

j. 1996. 1 l  :

! 2. List of Incomplete Responses in September 24. 1996 Response to July 25. 1996

RAI That Need To Be Addressed 8

l . RAI Question 1 stated: Framatome presented only limited information on

! the inspection of Electrosleeves for the detection of laboratory-induced stress corrosion cracking (SCC) in the parent tube. Discuss 5 the detection threshold for SCC tube flaws (axial and circumferential)

in the electrosleeved tubes using the actual field data analysis l procedures for degradation located at the expansion transitions and '

dented tube support plate intersections. Also include a discussion of

{ the potential masking of outside-diameter parent tube defects caused by asymmetric variations in the sleeve' thickness at the exit and entrance regions.

The response to Question 1 indicated that eddy current testing (ECT) qualification was not complete. No schedule for completion was provided.

.- RAI Question 2 stated: Since the electrosleeving process" enables detection of parent tube flaws beneath the sleeve, define and provide  ;

the basis for a plugging criteria for tubes with a measurable change 1 (from the initial inspections) in NDE signal response for indications located below the electrosleeve. If these criteria rely on the ability to depth size indications, provide a detailed description of the-qualification process to assess these depths. Include a description of i the flaws (i.e., SCC versus EDM notches, orientation, depths, number of samples, etc.) used to qualify the method. Also discuss the potential i influence on flaw depth measurement due to variations in sleeve wall  !

thickness.

1 I

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3 -l The response to Question 2 did not include the tube plugging criteria.

. RAI Question 3 stated: Eddy current inspection methods may be more i sensitive than ultrasonic techniques for the detection of pits and 'l nodules introduced in the fabrication process. Discuss the need to use  !

diverse inspection methods for accepting electrosleeves following the  !

installation process. j The response to Question 3 indicated that ultrasonic testing (UT) -

qualification utilizing tubes with stress corrosion cracking i indications and electrosleeving was not complete. No schedule for  ;

completion was provided.

The response to Question 3 did not discuss the ability of NDE to  !

detect pits, nodules and other possible plating defects. What l acceptance criteria will be used if these types of sleeve defects  !

are detected?  !

The response to Question 3 implied that a final decision had not l yet been made on which NDE methods will be used for both initial ^

sleeve acceptance and future inservice inspection. Has this  ;

decision been made? l

3. Other Ouestions That Need To Be Addressed  !

. Questions remain with respect to the effect UT beam redirection has on  !

the ability to detect indications, determine defect location and-sizes, J

-and determine sleeve wall thickness.

1

. What direction is the NDE qualification / plugging criteria taking? Is  ;

depth sizing being utilized, is determination of whether indications i are in the parent tube or sleeve region being used, or is some other '

plugging criteria being used?

l l

I 2

l cc w/att:

Professional Nuclear Mr. Neil S. Carns ,

Consulting, Inc. President and Chief Executive Officer l 19041 Raines Drive Wolf Creek Nuclear Operating Corporation i Derwood, Maryland 20855 P.O. Box 411 l Burlington, Kansas 66839 Gerald Charnoff, Esq.

Thomas A. Baxter, Esq. Mr. Dan I. Bolef, President i Shaw, Pittman, Potts & Trowbridge Kay Drey, Representative 2300 N. Street, N.W. Board of Directors Coalition Washington, D.C. 20037 for the Environment 6267 Delmar Boulevard Mr. H. D. Bono University City, Missouri 63130 Supervising Engineer, Site Licensing Mr. Lee Fritz Union Electric Company Presiding Comissioner Post Office Box 620 Callaway County Court House Fulton, Missouri 65251 10 East Fifth Street Fulton, Missouri 65151 U.S. Nuclear Regulatory Comission Resident Inspector Office Mr. Alan C. Passwater, Manager 8201 NRC Road Licensing and Fuels Steedman, Missouri 65077-1302 Union Electric Company Post Office Box 149 Mr. G. L. Randolph, Vice President St. Louis, Missouri 63166 Nuclear Operations Union Electric Company Mr. J. V. Laux, Manager P.O. Box 620 Quality Assurance Fulton, Missouri 65251 Union Electric Company Post Office Box 620 Manager - Electric Department Fulton, Missouri 65251 Missouri Public Service Comission 301 W. High Mr. Donald Schnell Post Office Box 360 Senior Vice President - Nuclear Jefferson City, Missouri 65102 Union Electric Company Post Office Box 149 Regional Administrator, Region IV St. Louis, Missouri 63166 U.S. Nuclear Regulatory Comission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 l Mr. Ronald A. Kucera, Deputy Director Department of Natural Resources P.O. Box 176 Jefferson City, Missouri 65102

. 1 B- ,

December 17, 1996 MEMORANDUM T0: William H. Bateman, Director ,

Project Directorate IV-2 .

Division of Reactor Projects III/IV

^

4 FROM: .Kristine M. Thomas, Project Manager l

Project Directorate IV-2 -

, ~

Division of Reactor, Projects III/IV - -

SUBJECT:

FORTHCOMING MEETING WITH UNION ELECTRIC COMPANY REGARDING j CALLAWAY PLANT, UNIT 1 , , I

\

DATE & TIME: January 15, 1997 .

1:00 p.m. - 4:00 p.m.

~

LOCATION: U.S. Nuclear Regulatory Commission ~

11555 Rockville Pike Rockville, Maryland .

Room 0-6B11 4 PURPOSE: To discuss the nondestructive examination qualification efforts to date in support of the staff's review of the amendment request that would allow the use of the Framatome electrosleeving technology for sleeving steam generator tubes at the Callaway Plant. A meeting agenda is attached.

PARTICIPANTS *: NRC VNION ELECTRIC T. Sullivan T. Herrman G. Hornseth E. Kahl P. Rush C. Beardslee K. Thomas l l

Docket No. 50-483 ,

l

Attachment:

Agenda cc w/att: See next page CONTACT: Kristine M. Thomas 415-1362

• Meetings between NRC technical staff and applicants or licensees are open for interested members of the public, petitioners, intervenors, or other parties to attend as observers pursuant to " Commission Policy Statement on Staff Meetings Open to the Public" 59 Federal Reaister 48340, 9/20/94. A portion of the meeting raay involve proprietary information. Consequently, those portions will not be open to the public. Anyone wishing toiatt'end this meeting should contact Kristine M. Thomas by January 13, 1997, at.(301) 415-1362.

DOCUMENT NAME: CAL 95204.MTR OFC PDIV-2/PM PDIV-2/LA NAME KThNak EYeN -

DATE 12/r7/96 12/ri/96 0FFICIAL RECORD COPY , - 4 F -

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PU">LIC PDIV-2 Reading R. Zimmerman (RPZ).

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E. Adensam (EGA1)

W. Bateman K.-Thomas l E. Peyton 0GC, 15B18

.E. Jordan (JKR)

OWFN Receptionist ACRS OPA (0PA)

M. Drouin, 17G21 J. Dyer, RIV' W. Johnson, RIV J. Gilliland, RIV T. Sullivan. EMCB G. Hornseth, EMCB P. Rush, EMCB C. Beardslee, EMCB T. Alexion, DRPW .

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