TXX-4776, Final Deficiency Rept CP-86-05 Re Safety Class Pipe Supports Mounted on nonsafety-related Embedded Plates. Initially Reported on 860113.Condition Not Reportable Per 10CFR50.55(e)
| ML20203P389 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 04/25/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-05, CP-86-5, TXX-4776, NUDOCS 8605070135 | |
| Download: ML20203P389 (1) | |
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Log # TXX-4776 File # 10110 903.8 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER = 400 NORTH OLIVE STREET. L.St. 8 5
- EDALLAN TEXAN TS308 April 25, 1986
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Mr. Eric H. Johnson, Director k
Division of Reactor Safety and Projects
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L' U.S. Nuclear Regulatory Commission I
611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION DOCKET N0. 50-445 SAFETY CLASS PIPE SUPPORTS MOUNTED TO NNS EMBEDDED PLATE SDAR: CP-P6-05 (FINAL REPORT)
Dear Mr. Johnson:
On January 13, 1986, we verbally notified your Mr. T. F. Westerman of a deficiency involving four piping systems which have been identified as including safety class pipe supports mounted to non-safety related embedded plates. We have submitted an interim report logged TXX-4739, dated March 25, 1986.
Our evaluation, which has included analysis of the affected piping systems and supports, has indicated no adverse conditions exist for three of the systems.
In the remaining system, a single pipe support installation required physical testing. Test results have indicated the carrying capa-city of the pipe support plate in question is twice the anticipated load imposed by the support.
The result of the reanalysis and testing concludes that in the event the condition had remained undetected, no condition adverse to safety would exist. Further, based upon the survey conducted when this issue was iden-tified, the four isolated pipe supports mounted to NNS embedded plates were isolated cases and therefore did not constitute a generic problem or signi-ficant breakdown in the QA program. We have concluded the issue is not reportable under the provisions of 10CFR50.55(e). Records supporting this determination are available for your inspectors to review at the CPSES site.
Very truly yours, W. G. Counsil JCH/arh c - NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D.C.
20555 A DIVISION OF TEXAS E1TILITIEN ELECTRIC COMPANY
!D 8605070135 860425 b b,1g PDR ADOCK 05000445
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