ML19339A569

Responds to NRC 800829 Ltr Re Violations Noted in IE Insp Repts 50-413/80-17 & 50-414/80-17.Corrective Actions: Procedure 427 Issued Re Process Control Requirements for ASME Class A,B & C Welds

ML19339A569
Person / Time
Site:	Catawba
Issue date:	09/26/1980
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19339A567	List: ML19339A569
References
NUDOCS 8011040302
Download: ML19339A569 (4)

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Svtau Paoovetion 373-4083

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Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia. 30303

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Re: RII:EHG 50-413/80-17 50-414/80-17

Dear Mr. O'Reilly:

Please find attached a response to Infractions No. 413-414/80-17-01 and' 413-414/80-17-02 which were identified in the above referenced Inspec-

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tion Report. Duke Power Company does not consider any information con-tained in this' inspection report to be proprietary.

Ver truly yours, I

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}WilliamO. Parker,J RWO:scs Attachment cc: NRC - Catawba Resident Inspector

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DUKE POWER COMPANY CATAWBA NUCLEAR STATION Response to Infraction 413-414/80-17-01

" Undersize pipe to flange socket weld" Infraction-As required by Criterion V of Appendix B to'10 CFR 50, and implemented by DPC Topical Report DUKE l-A Section 17, Paragraph 17.1.5, " Activities affecting quality shall be prescribed by documented instructions, procedures, or. drawings,3of aitype. appropriate to the circumstances and shall be accom-plished in accordance with these instructions, procedures, or drawings."

Duke Power Company Procedure L-200 specifies minimum weld sizes for socket-welding flange to pipe welds in reactor coolant pressure boundary and other safety-related piping.

Contrary to the above, on July 23, 1980, (1) The following exampl(s of reactor coolant pressure boundary (RCPB) and other safety-related (SR) piping to socket-welding flange welds did not meet the procedure requirements for size:

Weld System RCPB or SR 1BB10-15 Steam Generator Blowdown Recycle SR 1BB56-13 Steam Generator Blowdown Recycle SR I

1BB111-7 Steam Generator Blowdown Recycle SR INV550-8 Chemi al Volume Control RCPB INV550-9 Chemic al volume Control RCPB (2) A QC inspector inspecting the above welds used the wrong procedure criteria for size.

Interim Response

During the inspection conducted July 11-25, 1980, five welds on socket-welded flanges were identified as being undersized. Action required to correct this unacceptable condition is described as follows:

Immediate Corrective Action:

1. All welding inspectors have been retained in accordance with Welding Program Process Specification L-200 " Gas Tungsten Arc Welding" and Quality Assurance Procedure L-80 " Visual Workmanship Standards for Welds."

Construction Procedure 427 " Hold Points and Process Control Requirements for ASME Class A, B.'and C Welds" was issued on July 25, 1980, which provides additional information to the welding inspector to aid in determining weld leg length for socket-welded fisnges.

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Reins ection:

1. Upon identification of the five undersized' welds by the NRC Inspector, DPC QC welding inspectors reinspected the welds identified. Slight-

- concavity and local irrebularities were identified during the reinspec-tion'of the welds in question.

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A program was developed whereby all socket-welded flanges could be

. identified. _ The program was'run in its final form on August 27, 1980, and socket-welded flanges completed prior to that date for ASME, Duke Class A, B and C and ANSI B31.1, Duke Class E and F were identified.

A plan of-action for the reinspection and any necessary repairs has been developed. DPC will complete all reinspection efforts and any necessary repairs and submit a final report on or before April 1, 1981.

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DUKE POWER COMPANY-CATAWBA NUCLEAR. STATION 1

J Response to Infraction 413-414/80-17-02

" Welding, Material Control" Infraction As required by Criterion V of Appendix B to_10CFR 50, and implemented by DPC Topical Report DUKE 1-A Section 17, Paragraph 17.1.5, " Activities affecting quality shall be prescribed by documented instructions, procedures or . . . .

and shall be accomplished in accordance with these instructions procedures, or drawings." Duke Power Company Procedure H-3 requires segregation of electrodes by heat, size and classification.

Contrary to the above, on July 23, 1980, one Type E308-16 electrode was found mixed with 0309-16 electrodes (for safety-related welding) in the t - licensee's issue station. On July 24, 1980, an E308 electrode of one heat was mixed with E308 electrodes of another heat (for safety-related welding) j in the weld issuc station. Also on July 24, 1980, a welder welding safety-related pipe weld 2NI67-3-(Safecy Injection System) had mixed heats and 1 sizes of electrodes.

Response

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1. The electrodes which were found to be in the wrong ovens were immediately removed and destroyed.

2. A general reorganization of the Welder's Issue Station took place, consist-ing of the following:

A. Upon receiving returned filler material, the issue clerks put the ,

material directly into color-coded cans located under each window. I (The color codes are designed to match those specified for each l individual material.) I B. One individual full-time clerk is sorely responsible for stocking the holding ovens. Material is issued directly to the welders from these tens.

C. All. welders have been instructed to check each issue slip prior to leaving the window. A copy of the current heat / lot numbers is provided to each window for proper verification. In addition, all welder foremen are instructed to be available to check for proper information on the material issue slip.

D. One foreman, per issue, is assigned to be inside the issue station to survey the issuance of filler material and to assure it is carried out properly.,.

These changes were implemented within one (1) week of this inspection and should eliminate similar. occurrences in the future.

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