ML20127L504
| ML20127L504 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/07/1992 |
| From: | Feldman R THERMAL SCIENCE, INC. |
| To: | Miraglia F Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20127F509 | List: |
| References | |
| NUDOCS 9211240336 | |
| Download: ML20127L504 (2) | |
Text
4 ENCLOSURE 2
~
7 November 1992 HUBIN FELDMAN. P.E.
1"98>0e rif Nuclear Regulatory Commission 11555 Rockville Pike Rockville, Maryland 20852 Attention:
Mr. Frank J. Miraglia Deputy Director Office of Nuclear Reactor Regulation
Dear Mr. Miraglia:
The following is in confirmation of our telephone conference of Tuesday, October 20,1992.
I reported an item of potential concern relating to a recent shipment of THERMO-LAG Preshaped Conduit Sections (0.625 +/- 0.125" thickness) to Texas Utilities Electric Company.
On October 18,1992, Thermal Science met with Texas Utilities personnel in St. Louis to discuss this matter. During an onsite cutting operation of Preshaped Conduit Sections for field installation, an inner strata delamination which included voids running the length of the 3 foot conduit section, was observed. It was verbally reported that as of that date several sections, out of approximately 2000 plus shipped to that date, exhibited a similar phenomenon.
The conduit sections did not exhibit this phenomenon when shipped from our plant in St. Louis. This is based on quality control testing and verification of all products prior to shipment, conducted by both TSI and TU's quality control personnel. TU quality control personnel have been onsite at Thermal Science since the onset of the 1992 procurement.
We immediately commenced an examination of the possible cauas of this discrepancy and remedial action that may be appropriate. We are examining the matter thoroughly and our findings at this early stage are indeterminate.
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THERMAL SCIENCEJNC.'N200 CASSENS DR.. ST. LOUIS, MO 63026 (314) 3491233
/ TelekfDomestic 44 2384 Overseas 209901
- Telecopier (314) 349-1207
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Mr. Frank J. Miraglit 7 November 1993 Nuclear Regulatory Commission Page 2 A report on our examination, including remedial action, is presently targeted for completion within 45 days and will be sent to both Texas Utilities and the NRC.
We will keep you informed.
Yours tmly, O
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Rubin Feldman President RF/ mis e
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