TXX-6405, Interim Deficiency Rept CP-86-51 Re Hilti Anchor Bolts Which Do Not Meet Average Ultimate Tensile Loads in Certain Sizes as Published by Supplier.Initially Reported on 860717. Evaluation Continuing.Next Rept Expected by 870708
| ML20209C663 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 04/24/1987 |
| From: | Counsil W, Keeley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-86-51, IEIN-86-094, IEIN-86-94, TXX-6405, NUDOCS 8704290046 | |
| Download: ML20209C663 (1) | |
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Log # TXX-6405 r
F9 File # 10110 i
903.9
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Ref # 10CFR50.55(e) 1UELECTRIC April 24, 1987 Himam G. CournH Faavnte M hrsakne 4
U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.
20555 j
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS 50 445 AND 50-446 l
ANCHOR BOLTS SUPPLIED BY HILTI j
SDAR:
CP-86-51 (INTERIM REPORT)
Gentlemen:
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. Our latest interim report, logged TXX-6343 was i
submitted on March 20, 1987.
Evaluation of the problem by the vendor (Hilti) resulted in the concern being i
limited to 1/2 inch diameter Hilti Kwik Bolts with design embedments of 3-1/2 inches and larger.
This evaluation resulted in the issuance of NRC Information Notice 86-94, "Hilti Concrete Expansion Anchor Bolts," reporting a reduction in ultimate tensile capacity values for the 1/2 inch diameter Hilti i
Kwik Bolts.
Our evaluation of this concern is continuing. We will to submit a follow-up l
report by July 8, 1987.
Very truly yours, rzd4 W. G. Counsil i
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By:
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G. S. Keeley
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Manager,NuclearLicying GLB/gj l
c - Mr. E. H. Johnson - Region IV Mr. D. L. Kelley, RI - Region IV Mr. H. S. Phillips, RI - Region IV 0704290046 H70424
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