TXX-6093, Interim Deficiency Rept CP-86-51 Re Anchor Bolts Supplied by Hilti Not Meeting Average Ultimate Tensile Loads in Certain Sizes as Published by Supplier.Initially Reported on 860717. Next Rept Will Be Submitted by 870130
| ML20214C963 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/14/1986 |
| From: | Counsil W, Keeley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-51, TXX-6093, NUDOCS 8611210302 | |
| Download: ML20214C963 (1) | |
Text
Log # TXX-6093 File # 10110 903.9 TEXAS UTILITIES GENERATING COMPANY November 14, 1986 Mc%".hN.Uli Mr. Eric H. Johnson, Director r
Division of Reactor Safety and Projects 9$@]_MKM U. S. Nuclear Regulatory Commission bl l
Ol8E li n
ea O
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSESl
~^.,
DOCKET NOS. 50-445 AND 50-446 ANCHOR BOLTS SUPPLIED BY HILTI SDAR:
CP-86-51 (INTERIM REPORT)
Dear Mr. Johnson:
On July 17, 1986, we verbally notified your Mr. I. Barnes of a deficiency involving a condition cited at another nuclear facility in which anchor bolts supplied by Hilti do not meet average ultimate tensile loads in certain sizes as published by the supplier. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). Our most recent interim report was logged TXX-5032, dated September 19, 1986.
The vendor (Hilti) has recently issued revised average ultimate tensile values for 1/2-inch diameter anchor bolts.
The tensile load values for the other sizes of Hilti anchors remain unchanged.
Based on the information received from Hilti, we will review and revise the apprcpriate technical documents as required and begin an evaluation of existing 1/2-inch diameter anchor installations.
We anticipate submitting our next report by January 30, 1987.
Very truly yours,
[h W. G. Counsil E
By:./.k
/
-om G. S. Keeley
- O Manager,Nucleari sing _
GLB/gj c - NRC Region IV (Original + 1 copy) 00y Director, Inspection and Enforcement (15 copies)
U. S. Nuclear Regulatory Commission
'o$
Washington, D. C.
20555 caul
' 0 h
.< unnsson or n:us tresirurs rarcurc centr <w