ML20067E244
| ML20067E244 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 12/09/1982 |
| From: | Oprea G HOUSTON LIGHTING & POWER CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| ST-HL-AE-918, NUDOCS 8301040088 | |
| Download: ML20067E244 (3) | |
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The Light Company in>usmn ughdng & P-m ux ivoo ih>usi.ws 7700nvis> 2mmi December 9, 1982 ST-HL-AE-918 SFN: J-5000 PFN: MS.2 Mr. J. T. Collins Regional Administrator, Region IV Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012 South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 SUPPLEMENTARY REPORT CONCERNING WELDS IN THE ESSENTIAL COOLING WATER SYSTEM
Dear Mr. Collins:
As a result of Show Cause Order of Ap-il 30, 1980, Houston Lighting and Power Company (HL&P) committed to the re-examination of all ECW safety-related welds made prior to April 30, 1980.
By April 30, 1982, Engineering and Construction Management of the South Texas Project (STP) had been transferred to Bechtel and construction had been transferred to Ebasco.
The new contractors have reviewed the status of the E01 piping system.
Pursuant to discussions with your staf f on the subject matter, the following describes our program.
For welds made prior to April 30, 1980, the acceptance criteria used for evaluation of radiography will be the ASME Code, Paragraph ND-5322.
The application of ND-5322 acceptance criteria will provide a single consistent basis for weld acceptance under the ASME III Code. All new welds for the ECW System (including replacement welds of those cut out for construction expediency) are being made in accordance with the FSAR commitment to meet the requirements of ASME Code,Section III. Class 3.
In addition, the following improvements have been implemented for new welds.
1.
Bechtel and Ebasco procedures now require a backing ring configuration which improves root weldability and avoids root lack of fusion.
2.
All welders are qualified by radiography to ASME Code,Section IX.
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8301040008 821209 PDR ADOCK 05000 A
3 Ilouston 1.ighting & l'ower Coinpany Mr. J. T. Collins December 9, 1982 Page 2 ST-HL-AE-918 SFN: J-5000 PFN: M5.2 3.
Additionally, all ECW welders are subjected to further skill demonstration tests on full-scale mock-ups in the horizontal and vertical positions. These welds are subj ected to radiographic examination.
Each welder's workmanship must produce x-ray quality welds prior to the perf ormance of producticn welding.
If you should have further questions, please advise.
Very try
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J' Exec ve V ce President JLB/jlk i
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Ilouston 1.ighting & Power Company December 9, 1982 cc:
G. W. Oprea, Jr.
ST-HL-AE-918 J. H. Goldberg File Number: M5.2 J. G. Dewcase Page 3 J. D. Parsons D. G. Barker M. R. Wisenburg R. A. Frazar J. W. Williams R. J. Maroni J. E. Geiger H. A. Walker S. M. Dew J. T. Collins (NRC)
D. E. Sells (NRC)
W. M. Hill, Jr.
(NRC)
M. D. Schwarz (Baker & Botts)
R. Gordon Gooch (Baker & Botts)
J. R. Newman (Lowenstein, Newman, Reis, & Axelrad)
STP RMS Director, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 G. W. Muench/R. L. Range Charles Bechhoefer, Esquire Central Power & Light Company Chairman, Atomic Safety & Licensing Board P. O. Box 2121 U. S. Nuclear Regulatory Commission Corpus Christi, Texas 78403 Washington, D. C.
20555 H. L. Peterson/G. Pokorny Dr. James C. Lamb, III City of Austin 313 Woodhaven Road P. O. Box 1088 Chapel Hill, North Carolina 27514 Austin, Texas 78767 J. B. Poston/A. vonRosenberg Mr. Ernest E. Hill City Public Service Board Lawrence Livermore Laboratory P. O. Box 1771 University of California San Antonio, Texas 78296 P. O. Box 808, L-46 l
Livernore, California 94550 Brian E. Berwick, Esquire William S. Jordan, III l
Assistant Attorney General Harmon & Weiss i
for the State of Texas 1725 I Street, N. W.
i P. O. Box 12548 Suite 506 Capitol Station Washington, D. C.
20006 Austin, Texas 78711 Lanny Sinkin Citizens for Equitable Utilities, Inc.
Citizens Concerned About Nuclear Power c/o Ms. Peggy Buchorn 5106 Casa Oro Route 1, Box 1684 San Antonio, Texas 78233 Brazoria, Texas 77422 Jay Gutierrez, Esquire c.
Hearing Attorney Office of the Executive Legal Director U. S. Nuclear Regulatory Conmission Washington, D. C.
20555 Revision Date 10-18-82