ML19344D651

Final Deficiency Rept Re #3000 Fittings Installed Where Piping Specs Required #6000 Fittings.Caused by Failure to Perform & Comply W/Procedures to Verify Matl Prior to Installation

ML19344D651
Person / Time
Site:	Summer
Issue date:	04/18/1980
From:	Mary Johnson SOUTH CAROLINA ELECTRIC & GAS CO.
To:
References
REF-SSINS-6841 50-395-80-10-04, 50-395-80-10-4, NUDOCS 8004250404
Download: ML19344D651 (3)

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SOUTH CAROL!NA ELECTRIC a GAS COMPANY

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. . c . . .c u . .. ~ .e .... April 18, 1980 U. S. Nuclear Regulatory Coc: mission Attn: Mr. James P. O'Reilly Director Region II 101 Marietta Street, NU .

Atlanta, Georgia 30303

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Subject:

V. C. Summer Nuclear Station Unit fl Reportable Item in Accordance with 10CFR50.55(e)

Gentlemen: .

On March 19, 1980, our Region II Principal Inspector (T. Burdette),

was notified of a potential reportable item relative to 3000# piping fittings being installed in lines requiring 6000# fittings. The installa-tion of the incorrect fitting was performed and accepted by both the

, Constructor, Daniel Construction Company, and the piping supplier, South-west Fabricating & Welding Company, Houston, Texas. As such, the condition is considered to fit the definition of defect in 10CFR Part 21.

This item has been assigned NRC number 50-395/80-10-04.

Nature of Condition 3000# fittings were installed where the piping specifications required 6000# fittings. The condition was discovered during the reinspection progran established correct undersize socket welds as described in our letter to the NRC dated December 5, 1979. It was determined by reinspection that sufficient fillet weld size was unattainable on certain fittings because of the hub thickness.

Investigation revealed tne hub was thin because the fitting was a -

3000# class in lieu of a 6000# class. The extent appears to be two fittings on the part of the Constructor and six fittings on the part of the piping supplier.

Cause The cause of the condition uith respect to the constructor is the failure to perform and comply uith procedures to verify caterial prior to installation. The condition is further manifestation of our 30/7 SC

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April 18, 1980 previously reported ASMZ QC program breakdown resulting from any combination of factors including some procedural inadequaices and some less specific interpretation, training, competency, attitude, and supervision inadequacies. .

. In the case of the piping supplier, it appears to SCE&G that a program deviation of some nature occurred wherein the incorrect fittings were installed. A Corrective Action Request (CAR) was issued to the piping supplier to apprise them of this condition and ,-

request corrective action although the SCE&G purchase order with the ~J -

supplier is currently complete. To date, this supplier has aided -

in identifying extent of the condition based on fabrication records review.

Safety Imolications To determine the exact safety implications, Engineering would need to evaluate each specific system affected by the inappropriate fittings. Since it is apparent that deficient conditions exist due to errors on the part of the Constructor and piping supplier, the possibility of the condition having safety implications cannot be ruled out. For this reason, the conditions are conservatively being classified as potentially reportable and will be corrected to remove any doubt as to product acceptability.

Actions to Correct Conditions SCE&G is confident that all undersize fittings will be detected during the controlled reinspection program for undersize socket welds. All fittings found to be incorrect will be replaced with appropriate size fittings. Welding done to replace the fittings will be inspected by the Constructor's Code QC organization for code purposes and by the SCE&G overview organization for acceptance co=mensurate with the actions taken for undersize socket welds.

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Corrective Actions to Prevent Recurrence In the case of the Constructor, SCE&G believes the actions taken with respect to undersize socket welds and the Code QC area in general will eliminate recurrence of the type of conditions noted herein.

Specifically, SCE&G and the Constructor have imple= anted a program of in-depth review of procedures in this area to provide adequate work instructions to welders and inspectors. Training of the craft and inspection personnel has taken place with SCE&G verification of adequacy. In addition, SCE&C/QC and QA organizations are monitoring the Constructors activities with the long term objectives of re-establishing confidence in that organization. f-t

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Pag,a 3 April 18, 1980 In the case of the piping supplier, actions have been initiated via the CAR to obtain corrective action to the problem identified.

The purchase order with this supplier is currently complete and..

response on their part cannot be candated. SCE&G will evaluate any corrective actions to this problem received from the piping '

supplier and utilize the evaluation in term of future use of the supplier.

SCESG believes actions outlined above will adequately resolve problem encountered with the installation of 3000// fittings where 6000// ones were required. Since all necessary actions have been identified and are in the process of- being implemented, we consider this a final report on this item.

All actions taken will be available at the construction site for NRC review.

Should further information be required, please contact us. .

Very truly yours, Y .

DRM/ DAN /MCJ/jls cc: C. J. Fritz G. C. Meetze bec: E. H. Crews, Jr.

T. C. Nichols, Jr.

H. T. Babb C. A. Price NPCF/Dixon H. Radin R. J. Hoffert A. A. Smith, Jr.

J. F. Algar C. K. Brown C. C. Wagoner W. L. West J. Skolds

0. S. Bradham J. M. Woods J. A. Williams tiffife of Directtre

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