ML20033D058
| ML20033D058 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 11/25/1981 |
| From: | Oprea G HOUSTON LIGHTING & POWER CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, ST-HL-AE-759, NUDOCS 8112070171 | |
| Download: ML20033D058 (2) | |
Text
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s The Light
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November 25, 1981
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ST-HL-AE-759 SFN: V-0530 Mr. John T. Collins, h
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Regional Administrator, Region IV (pF 1 k gO
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Nuclear Regulatory Commission k
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611 Ryan Plaza Dr., Suite 1000 Arlington, TX 76012
- C DEC4 19815 U
Dear Mr. Collins:
'Ne$N South Texas Project h-8' Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 M./ Q First Interim Report Concerning Rockbestos Company Coaxial Cable on October 26, 1981, pursuant to 10CFR50.55(e) Houston Lighting & Power Company notified your office of an item concerning cable manufactured by Rockbestos Company used in electrical penetrations supplied by Westinghouse.
HL&P was advised by letter from Westinghouse that Rockbestos had identified to them a potential for failure of certain coaxial cables.
In particular Rockbestos had stated to Westinghouse:
"Af ter extensive examination and testing, we have confirmed that under some conditions, and to a degree not completely predictable, Rockbestos solid dielectric coaxial constructions may exhibit fail-ures due to shorting of the center conductor to the braided shield.
Expansion of the dielectric when heated causes foreshortening of the braid shield, which in turn results in longitudinal compression and kinking of the center conductor. This kinking, combined with heat may cause mechanical and/or thermal stress cracking of the polymer LD inner layer, permitting electrical failure.
RSS-6-100 through RSS-6-112 constructions may be subject to fail-ures of this type at temperaturea abeve 230 F."
It is our understanding that a test program to determine the appropriate corrective measures is undervay at Rockbestos. Our next report on this item will be submitted by April 30, 1982.
If you should have any questions concerning this item, please contact Mr. Michael E. Powell at (713) 676-8592.
Very t
- yours, N
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/ A.
. W./
ea Jr Exec' ive V President MEP/ bit r8112070171 011125
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DR ADOCK 05000
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licuston Lighting & Power Compan) cc:
G. U. Oprea November 25, 1981 J. H. Geldberg ST-HL-AE-759 J. G. Dewcase SFN: V-0530
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D. G. Barker Page 3 C. G. Robertson H. Pyle, III R. A. Frazar D. R. Beeth J. W. Williams J. W. Briskin J. E. Geiger D. E. Sells (NRC)
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)
STP RMS Director, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 R. L. Range /G. W. Muench 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 V
R. L. Hancock/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 I
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
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Livermore, Calif ornia 9455C E
Brian E. Berwick, Esquire William S. Jordan, III Assistant Attorney General Harmon & Weiss e
fot the Etate of Texas 1725 I Street, N. W.
4 P. O. Box 12548 Suite 306 h
Capital Station Washinton, D. C.
20006 j
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Lanny Sinkin Citizens for Equitable Utilities, Inc.
Citizens Concerned About Nuclecr Power c/o Ms. Peggy Buchorn 5106 Casa Oro Route 1, Box 1684 i
San Antonio, Texas 78233 Brazoria, Texas 77422 Jay Cutierrez, Esquire Hearing Attorney Office of the Executive Legal Director U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Revision Date 10-29-81
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