ML20009F574

Significant Deficiency Rept SD 413/81-12 Re Radiographic Film for Reactor Vessel Control Rod Drive Mechanism Housing Welds,Initially Reported on 810603.Westinghouse Is Continuing Technical Evaluation of Radiographic Technique

ML20009F574
Person / Time
Site:	Catawba
Issue date:	07/02/1981
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, SD-413-81-12, NUDOCS 8107310319
Download: ML20009F574 (2)

Text

. _ _ _ . _ _ _ _ _ _ _ _

• N f P c )E Cop ,

DUKE POWER COMPANY PowEn Buttnixo 422 SocTn Catcacu STREET, CitAaLOTTE, N. C. 28242

.~w W B L.. , AM O. PA R M E R, J R.

TELCpmCNC: A#CA 7C4 WCr PmC5'Of NT

$ttau PmOOwCt50% 373-4083 July 2, 1981 4b i eECOV[{/ 3 Mr. James P. O'Reilly, Director j- JR " 01987 U. S. Nuclear Regulatory Commission ,,,'@ g .s 4

Region II -

101 Marietta Street, Suite 3100-  %

Atlanta, Georgia 30303 y #

Re: Catawba Nuclear Station Unit 1 Docket No. 50-413

Dear Mr. O'Reilly:

Pursuant to 10CFR 50.55e, please find attached Significant Deficiency Report SD 413/81-12.

Very truly yours,

• /t -

William O. Parker, Jr. ,

RWO/php Attachment cc: Director Resident Inspector Office of Inspection and Enforcement -

Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Catawba Nuclear Stction Washington, D. C. 20555 f M'),

9' l 8107310319 810702 PDR ADOCK 05000413 S PDR

Report Number S0-413/81-12 Report Date July 2, 1981 Facility Catawba Nuclear Station Unit 1 Identification of Deficiency Radiographic film for reactor vessel CRDM housing welds supplied by Westinghouse does not meet the requirements of ASME Section III Appendix IX.

Initial Report On June 3,1981, Mr. J. Bryant of NRC Region II, Atlanta, GA, was notified of this deficiency by Messers. W. O. Henry, J. E. Cavender, and J. K. Berry of Duke Power Company, Charlotte, NC 28242. This notification was a result of potentially reportable items CA-81-19 and MC-81-ll.

30-day Follow-Up Report

[ Westinghouse determined on June 24, 1981, that 13 RT film at Catawba and 11 RT films at McGuire exceeded the film density requirements. These welds will

) require additional volumetric examination by Westinghouse. This work is expected to start about August 15, 1981, when the Catawba reactor vessel head can be removed. The Catawba resident NRC inspector was present during the film evaluation by Duke and Westinghouse.

One film for a CRDM weld was not found in the McGuire records and will also be included in the reexamination.

Westinghouse is continuing their technical evaluation of the radiograph tech-nique used. Also a CRDM mockup is being made to evaluate different volumetric examination techniques.

A final report will be provided by December 15, 1981.