ML20141E065

Discusses Completion of Licensing Action for GL 95-03, Circumferential Cracking of Steam Generator Tubes,

ML20141E065
Person / Time
Site:	Catawba
Issue date:	05/16/1997
From:	Tam P NRC (Affiliation Not Assigned)
To:	Mccollum W DUKE POWER CO.
References
GL-95-03, GL-95-3, TAC-M92231, TAC-M92232, NUDOCS 9705200297
Download: ML20141E065 (5)

Text

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2 j NUCLEAR REGULATORY COMMISSION o . WASHINGTON, D.C. 30666 4001

% +o May 16,1997 Mr. William R. McCollum Site Vice President i Catawba Nuclear Station '

Duke Power Company ,

4800 Concord Road  !

York, South Carolina 29745-9635 -

i

SUBJECT:

CATAWBA NUCLEAR STATION - COMPLETION OF LICENSING ACTION FOR GENERIC LETTER 95-03, "CIRCUMFERENTIAL CRACKING OF STEAM GENERATOR TUBES,"

DATED APRIL 28, 1995 (TAC M92231 AND M92232)

Dear Mr. McCollum:

On April 28, 1995, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 95-03, "Circumferential Cracking of Steam Generator Tubes," to all holders of operating licenses or construction permits for pressurized-water-reactors. The NRC issued GL 95-03 for three principal reasons:

(a) Notify addressees about the safety significance of the recent steam generator tube inspection findings at Maine Yankee Atomic Power Station.

(b) Request that all addressees impleme'nt the actions described within the generic letter.

(c) Require that all addressees submit to' the NRC a written response regarding implementation of the requested actions.

In addition, GL 95-03 alerted addressees to the importance of performing comprehensive examinations of steam generator tubes using techniques and equipment capable of reliably detecting the types of degradation to which the steam generator tubes may be susceptible. The staff also noted that the performance of steam generator tube examinations is controlled, in part, by Appendix B to Title 10, Part 50, of the Code of federal Regulatfons (10 CFR Part 50).

In GL 95-03, the NRC staff also requested that licensees take the following g actions:

(1) Evaluate recent operating experience with respect to the detection and-sizing of circumferential indications to determine the applicability to their plants.

(2) On the basis of such evaluation, as well as past inspection scope and results, susceptibility to circumferential cracking, threshold of detection, expected or inferred crack growth rates, and other relevant factors, develop a safety assessment justifying continued operation until the next scheduled steam generator tube inspections.

200105 NBC FILE CENTER COPY 9705200297 970516 PDR ADOCK 05000413 P PDR ..

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1 William R. McCollum .2- May 16, 1997 (3) Develop plans for the next steam generator tube inspections as they 4

pertain to the detection of circumferential cracking. The inspection

plans should address, but not be limited to, scope (including sample i expansion criteria, if applicable), methods, equipment, and criteria j (including personnel training and qualification).

To document the outcome of these actions, the NRC staff requested that addressees prepare and submit the following:

(1) A safety assessment-justifying continued operation, predicated on the evaluation performed in accordance with requested actions 1 and 2 (above).

- (2) A summary of the inspection plans developed in accordance with requested action;3 (above) and a schedule for the next planned inspection.

In response to GL 95-03, Duke Power Company provided letters dated June 27, September 19 and October 25, 1995, for the Catawba Nuclear Station. These submittals provided the information requested by GL 95-03;.therefore, the above TAC numbers are closed. For your information, the staff's findings regarding this issue are contained in NUREG-1604, "Circumferential Cracking of Steam Generate:- Tubes."

If you have any questions regarding this matter, please contact me at 301-415-1451.

Sincerely, ORIGINAL SIGNED BY:

Peter S. Tam, Senior Project Manager Project Directorate II-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc: .See next page Distribution Docket File OGC PUBLIC JJohnson, RII PDII-2 Reading PPatnaik, 0-7 E23 SVarga CCasto, RII r

DOCUMENT NAME: G:\ CATAWBA \ CAT 92231.LTR To receive a copy of this document, indicate in the box: "C" - Copy without attachment / enclosure "E" - Copys with attachment / enclosure "N" - No copy ortice onPevDri rpt ,I- PDII 2RA\\9 - l PDI F W M l l I l M PTam:cn .(f( LBerry  % NBfrkoM \ 7 oAss est(L iw v s ennttw 3 eer nMr 5

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William R. McCollum  ;

(3) Develop plans for the next' steam generator tube inspections as they  ;

pertain to the detection of circumferential cracking. The inspection l plans should address, but not be limited to, scope (including sample i expansion criteria, it applicable), methods, equipment, and criteria l (including personnel training and qualification).

L

! To document the outcome of these actions, the NRC staff r3 quested that I addressees prepare and submit the following:

{ l i (1) A safety assessment justifying continued operation, predicated on the b

evaluation performed in accordance with requested actions 1 and 2 (above).

(2) A summary of the inspection plans developed in accordance with requested )

3 action 3 (above) and a schedule for the next planned inspection. j 1

! In response to GL'95-03, Duke Power company provided letters dated June 27, l September 19, and October 25, 1995, for the Catawba Nuclear Station. These

submittals provided the information requested by GL 95-03; therefore, the above TAC numbers are closed. For your information, the staff's findings regarding this issue are contained in NUREG-1604, "Circumferential Cracking of

!. Steam Generator Tubes." ,

I( If you have any questions regarding this matter, please contact me at l 301-415-1451. ,

Sincerely,

,pe 1

QA%.

Peter S. Tam, Senior Project Manager 4 Project Directorate II-2 1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc: See next page

_ _ _ _ _ . . . _ . . _ . _ . _ __ _ _. ~. _ _ ___. _ _ _ _

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l Catawba Nuclear Station

• l Units 1 and 2

} -

2 cc:

Mr. M. S. Kitlan North Carolina Electric Membership

Regulatory Compliance Manager Corporation i

Duke' Power Company P. O. Box 27306

, 4800 Concord Road Raleigh, North. Carolina 27611

York, South Carolina 29745 l Senior Resident Inspector i Mr. Paul R. Newton Route 2, Box 179 N

Legal Department (PB05E). York, South Carolina 29745 i 422 South Church Street j Charlotte, North Carolina 28242-0001 Regional Administrator, Region II l

U. S. Nuclear Regulatory Commission  !

J. -Michael McGarry, III, Esquire Atlanta Federal Center i Winston and Strawn 61 Forsyth Street, S.W., Suite 23T85 t 1400 L Street, NW Atlanta, Georgia 30303 Washington, DC 20005 Max Batavia, Chief .

North Carolina Municipal Power Bureau of Radiological Health I Agency Number 1 South Carolina Department of 1427 Meadowwood Boulevard Health and Environmental Control P. O. Box 29513 2600 Bull Street Raleigh, North Carolina 27626-0513 Columbia, South Carolina 29201

~

Mr. T. Richard Puryear Mr. G. A. Copp Owner's Group (NCEMC) Licensing - EC050 '

Duke Power Company ' Duke Power Company 4800 Concord Road 526 South Church Street York, South Carolina 29745 Charlotte, North Carolina 28242-0001 County Manager of York County Saluda River Electric I York County Courthouse P. O. Box 929 '

York, South Carolina 29745 Laurens, South Carolina 29360 Richard P. Wilson, Esquire Ms. Karen E. Long l Assistant Attorney General Assistant Attorney General South Carolina Attorney General's North Carolina Department of Justice Office P. O. Box 629 P. O. Box 11549 Raleigh, North Carlina 27602 Columbia, South Carolina 29211 Elaine Wathen, Lead REP Planner Piedmont Municipal Power Agency Division of Emergency Management 121 Village Drive 116 West Jones Street Greer, South Carolina 29651 Raleigh, North Carolina 27603-1335 Dayne H. Brown, Director Mr. William R. McCollum Division of Radiation Protection Site Vice President N.C. Department of Environment, Catawba Nuclear Station Health and Natural Resources Duke Power Company P. O. Box 27687 4800 Concord Road '

Raleigh, North Carolina 27611-7687 York, South Carolina 29745