TXX-4761, Final Deficiency Rept CP-85-45 Re Use of Core Boring Equipment During Installation of Shear Lugs.Initially Reported on 850926.Issue Not Reportable Per 10CFR50.55(e)
| ML20203P525 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 04/11/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-85-45, TXX-4761, NUDOCS 8605070397 | |
| Download: ML20203P525 (1) | |
Text
,
Log i TXX-4761 4
File # 10110 903.8 TEXAS UTILITIES GENERATING COMPANY NKYWAY TOWER
- 400 NORTH (3tJVE NTREET. L.B. A t. DAILAN. TEXA5 7820 8 April 11, 1986 WILUAM G. COUNSfL 7 M @ M N iiF APR l 619A6 Mr. Eric H. Johnson, Director Division of Reactor Safety and Projects j
U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 l
Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 AND 50-446 REBAR DAMAGE SDAR: CP-85-45 (FINAL REPORT)
Dear Mr. Johnson:
On September 26, 1985, we verbally notified your Mr. I. Barnes of a deficiency regarding the use of core boring equipment during tha installation of shear lugs. The use of this equipment could have resulted in undocumented damaged reinforcing steel. We have submitted interim 4
reports TXX-4603, TXX-4628, and TXX-4686, dated October 16, 1985, November 20, 1985, and February 5, 1986, respectively.
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Investigation of this issue has included the identification of twenty-four supports where the installation of shear lugs could have resulted in rebar damage.
In the twenty-three instances where no inspection-documentation exists for the core bores, conservative evaluations have concluded the structural integrity of the concrete structures has not been jeopardized.
For the remaining support, inspection records indicated there was no cut rebar in the core drilled holes.
Had the deficiency remained undetected, it could not have adversely affected the safety of operations.
Therefore, this 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, 8605070397 860411 PDR ADOCK 05000440 g
PDR W. G. Counsil JCH/grr i
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Director, Inspection & Enforcement (15 copies)
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