ML19295A634

Part 21 Rept,Supplementing 800911 & 12 Ltrs Re Defective Components.Investigation in Progress to Determine Number & Location of All Such Components in Use.Cause of Defect Still Unknown

ML19295A634
Person / Time
Site:	Grand Gulf
Issue date:	09/17/1980
From:	Friedman M HILTI FASTENING SYSTEMS
To:
References
REF-PT21-80-284-000 NUDOCS 8010020669
Download: ML19295A634 (2)

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ACTION:

PRELIMItMRY EVALUATION OF THE' ATTACHED REPORT IfGICATES LEAD RESPONSIBILITY FOR FOLLOWJP AS SFOhN BELOW:

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, FASTENING SYSTEMS CORPORATE HEADoVARTERS P.o. BOX 45400. TULSA. oK 74145.(918) 627-9711 6>-91 t, September 17, 1980 Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Re: Our letters of September 11 and September 12, 1980 Gentlemen:

The purpose of this letter is to supplement the information in the referenced letters by complying more specifically with the format outlined in 10CFR, part 21.

1. Name and address of the individual or individuals informing the Commission -

1.1 Our letters of September 11 and September 12 were from Herbert H. Henkel, Director Technical Services, Hilti, Inc., P. O. Box 45400, Tulsa, Okalhoma 74145.

1.2 This letter is from Michael Friedman, Vice President Marketing, Hilti, Inc., P. O. Box 45400, Tulsa, Oklahoma 74145;. Mr. Henkel is in Europe, participating in the investigation relative to to this matter.

2. Identification of the facility - At this time, we know that the products in question have been used at the Grand Gulf Nuclear Station, Port Gibson, Mississippi.

We are investigating to determine if these products were used in any other nuclear power plants.

3. Identification of the firm constructing the facility -

Bechtel Power Corporation, Architect Engineers represent-ing Mississippi Power and Light. Hilti, Inc. supplier of Kwik-Bolt Anchors.

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• Director I September 17, 1980 Page Two

4. Nature of the defect - The nature of the defect was covered in our letters of September 11 and September 12, 1980.

5. The date on which the information of such defect or failure to comply was obtained - September 11, 1980.

6. The number and location of such components in use -

Until the cause for the reduced product performance has been identified, we will not be able to determine the number and location of all such components in use. This investigation is being aggressively pursued.

7. The corrective action being taken - Additional in-house testing was conducted following our letters of September 11 and September 12, 1980. Thus far, we have been unable to determine the cause. Further investigation is being conducted at Hilti's Development facility at this time.

8. Information given to purchasers or licensees - Copies of our letters of September 11 and September 12, 1980 have been forwarded to Mr. Adrian Zaccaria, Project Engineer, Bechtel Power Corporation for Grand Gulf Nuclear Station, 15740 Shady Grove Road, Gaithersburg, Maryland 20760. A copy of this letter will also be provided to Mr. Zaccaria.

Every action is being taken to identify the cause for the reduced product performance outlined in the referenced letters.

As soon as the findings of this investigation are complete, they will be reported.

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. Michael Friedman Vice President Marketing MF:sg cc: L. Bernhardt - President /HILTI U.S.

R. M. Finn - Vice President / Sales R. Zink - Vice President / General Counsel H. Henkel - Director / Technical Services H. Burleigh - President /HILTI Industries, Inc.

S. Ray 1 - Director / Quality Assurance Adrian Zaccaria, Project Engineer, Bechtel Power Corp.