TXX-6045, Interim Deficiency Rept CP-84-12 Re Impact of High Energy Line Break Temp on Qualified Equipment Outside Containment. Initially Reported on 840604.Comparison of Cable Temp to Existing Qualified Temps Unresolved.Next Rept by 861219
| ML20197B333 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/21/1986 |
| From: | Counsil W, Keeley G, Kelley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-84-12, TXX-6045, NUDOCS 8610280365 | |
| Download: ML20197B333 (2) | |
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DALLAS-SLIC TEL No.
214 979 8700 Oct 21.86 17:22 P.02 Log # TXX-6045 5
File # 10110 903.11 TEXAS UTILITIES GENERATING COMPANY
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- DAh.AS. HMAS MS.1 October 21, 1986 WILLIAM G COUN$1b titewtivt vict ref eiet=7 Mr. Eric H. Johnson, Director Division of Reactor Safety and Projects LU iL-M U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 IMPACT OF HELB TEMPERATURES ON QUALIFIED EQUIPMENT OUTSIDE CONTAINMENT SDAR: CP-84-12 (INTERIM REPORT)
Dear Mr. Johnson:
On June 4,1984, we verbally notified your Mr. D. Hunnicutt of a deficiency involving the environmental qualification of equipment outside containment for high energy line breaks (HELB). This is an interim report of a potentially reportable item under provisions of 10CFR50.55(e). Our most recent interim rsport was logged TXX-5029, dated September 19, 1986.
The remaining qualification issue yet to be resolved is a comparison of the cable temperatures in the area of concern to the existing established qualified temperatures. After identifying cable types and locations, a thermal transient analysis will be performed to determine the temperatures to which the outer cable layer is exposed. These temperatures will be used to i
determine if the ambient temperature will exceed the cables' qualified environmental temperature.
Current project scheduling indicates our evaluation will be completed %y i
December 1, 1986.
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DALLAS-SLIC TEL No.
214 979 8700 Oct 21,86 17:22 P.03 TXX-6045 October 21, 1986 Page 2 We are continuing our evaluation of this issue and anticipate submitting our next report by December 19, 1986.
Very ruly yours, isd[
W. G. Cou sil By:
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G. 3. Keeley Manager, NucleaT T.K. s ng i
JCH/gj c - NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D.C.
20555 I
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