ML19338G038

Interim Deficiency Rept Re Welding of Main Steam Line Pipe Whip Restraints.Reinsp of Welds Will Be Performed by Brown & Root.Units Are Being Placed on Hold Until Completion of Insp.Next Rept Will Be Submitted by 810116

ML19338G038
Person / Time
Site:	South Texas
Issue date:	10/24/1980
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, ST-HL-AE-565, NUDOCS 8010280360
Download: ML19338G038 (5)

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The Light (OE Uf flouston Lighting & Power P.O. Box 1700 Houston, Texas 77001 (713) 228-9211 October 24, 1980 ST-HL-AE-565 SFN: V-0530 Mr. Karl Seyfrit Director, Region IV Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012 Deae Mr. Seyfrit:

South Texas Project Units 1&2 Docket Nos. STN 50-498, STN 50-499 Interim Report Concerning Welding of the Main Steam Line Pipe Whip Restraints Please find attached our interim report regarding main steam line pipe whip restraint welding which Houston Lighting & Power Company verbally re-ported to your office on September 26, 1980 as being potentially reportable pursuant to 10CFR50.55(e). The next interim report will be submitted to your office by January 16, 1981. .

If there are any questions concerning this item, please contact Mr.

Michael E. Powell at (713) 676-8592. , ,

Very yyours,  :.3 l

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' Exe tive ~ e President MEP/pjb Attachment 30/7 5

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Houston Lighting & Power Company October 24,1980 ST-HL-AE-565 SFN: V-0530 Page 2 cc: J. H. Goldberg D. G. Barker Howard Pyle R. L. Waldrop H. R. Dean -

D. R. Beeth J. D. Parsons G. B. Painter L. K. English A. J. Granger R. A. Frazar H. S. Phillips (NRC)

J. O. Read (Read-Poland,Inc.)

M. D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J. R. Newman (Lowenstein, Newman, Reis, Axelrad & Toll)

Director, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 s

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Houston Ughting & Power Company October 24, 1980 ST-HL-AE-565 SFN: V-0530 Page 3 M. L. Borchelt Executive Vice President Central Power 6 Light Company P. O. Box 2121 Corpus Christi, Texas 78403 R. L. Range Central Power 6 Light Company P. O. Box 2121 Corpus Christi, Texas 78403 R. L. Hancock Director of Electrical Utilities City of Austin P. O. Box 1088 Austin, Texas 78767 T. H. Muehlenbeck City of Austin P. O. Box 1088 Austin, Texas 78767 J. B. Poston Assistant General Manager of Operations City Public Service Board P. O. Box 1.771 San Antonio, Texas 78296 A. vonRosenberg City Public Service Board P. O. Box 1771 San Antonio, Texas 78296 i

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Houston Ughting & Power (kunpany October 24, 1980 ST-HL-AE-565 Charles Bechoefer, Esquire Chairman, Atomic Safety 4 Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Dr. James C. Lamb, III 313 Woodhaven Road Chapel Hill, North Carolina 27514 Dr. Emmeth A. Luebke _

Atomic Safety 6 Licensing Commission U. S. Nuclear Regulatory Commission Washington, D. Q. 20555 Steven A. Sinkin, Esquire 116 Villita Street San Antonio, Texas 78205 Citizens for Equitable Utilities c/o Ms. Peggy Buchorn Route 1, Box 432 Brazoria, Texas 77422 Richard W. Lowerre, Esquire Assistant Attorney General for the State of Texas ,

P. O. Box 12548 Capitol Station Austin, Texas 78711 Bernard M. Bordenick Hearing Attorney Office of the Executive Legal Director U. S. Nuclear Regulatory Commission Washington, D. C. 20555

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Attachment Interim Report Concerning the Welding of the Main Steam Line Pipe Whip Restraints October 23, 1980 On September 26, 1980, Houston Lighting & Power Company notified your office pursuant to the requirements of 10CFR50.55(e) of a potentially reportable deficiency regarding code weld defects in the main steam line pipe whip restraints. Welding of these structural steel restraints was performed in accordance with the American Welding Society Code (AWS D.1.1-1977). This initial reporting was based on preliminary and general assessments of the conditions of forty-three units which had been delivered and stored at the site. This assessment was qualitative (accept / reject) in nature with ro specificity to the location, nature, size, shape, or significance of the alleged weld de-fects.

In order to accurately assess the conditions of the fabricated units of i the main steam line pipe whip restraints, a 100% visual re-inspection of

! all welds within the fabricated units has been scheduled. The re-inspect ~

ions will be performed by qualified Brown & Root Quality Control and/or Vendor Surveillance inspectors under the direction of Quality Engineering.

The objective of the re-inspection program is to confirm compliance with AWS 0.1.1-1977 code requirements. The program includes re-inspection of welds in the forty-three units stored at the site, the seventy-five units at an offsite painting shop, and the remaining units at the fabricator's facility awaiting release for shipment. Any weld defects identified during this re-inspection will be mapped on the detailed fabrication draw-ings showing the location, nature, size and shape of the defect.

Only after this 100% visual re-inspection can the significance of the problem be defined in order to determine the NRC reportability. The re- ,

inspection program is initially scheduled to examine those units with highest priority for field installation. At present all units are placed on " hold" until individually approved for further processing through the re-inspection program.

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