ML18344A417

Letter Listing Items Delivered on March 13, 1975 Per 03/11/1975 Request for Additional Information Concerning Eddy Current Testing Performed During February 1975

ML18344A417
Person / Time
Site:	Palisades
Issue date:	03/25/1975
From:	Sewell R Consumers Power Co
To:	Giambusso A Office of Nuclear Reactor Regulation
References
Download: ML18344A417 (3)

Text

..

• consumers

• Power company gan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 March 25, 1975 Mr. Angelo Giambusso Re: Docket 50-255 Director of Reactor Licensing License DPR-20 US Nuclear Regulatory Commission Palisades Plant Washington, DC 20555 Additional Eddy Current Test Information

Dear Mr. Giambusso:

During a telephone conversation on Tuesday, March 11, 1975, a member of your staff requested additional information with regard to our March 10, 1975 submittal concerning eddy current testing performed during February 1975.

This information was delivered to your staff on March 13; 1975 and is transmitted, attached to this letter, to formally document our responses. The attached items are:

Table 1 - Palisades "A" Steam Generator Eddy Current Test Results Table 2 - Palisades "B" Steam Generator Eddy Current Test Results Table 3 - Tubes Plugged as Part of the February 1975 Palisades "A" Steam Generator Inspection Table 4- Tubes Plugged as Part of the February 1975 Palisades "B" Steam Generator Inspection Table 5 - Tubes with an indication.~ 50% which, when averaged with addi-tional readings, were below 50% and remain in service following the February 1975 Palisades "A" steam generator inspection.

Table 6 - Tubes with an indication ~ 50% which, when averaged with addi-tional readings, were below 50% and remain in service following the Fepruary 1975 Palisades "B" steam generator inspection.

Yours very truly,

• DAB/ce CC: JGKeppler, USNRC Ralph B. Sewell Nuclear Licensing Administrator

consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550' February 3, 1975 Mr. J. G. Keppler Re: Docket 50-25~

Regional Director License DPR-20 Directorate of Regulatory Operations Palisades Plant Region III UE-74-3 US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Dear Mr. Keppler:

This letter is written to confirm previous discussions with members of your staff and to close out the possible loss of special nuclear material (SNM) as reported to you by Mr. R. B. DeWitt's TWX of January 7, 1975.

The TWX dated January 7, 1975 transmitted a chronological listing of.events regarding the possible loss of an out-of-core fission chamber containing approximately 1.7 grams of enriched uranium. This chronological listing started with the date of shipment of the fission chamber and included the efforts by Consumers Power Company to locate the fission chamber,as it had not arrive~ at the plant in the expected time frame. The TWX'concluded that the fission chamber was definitely lost. "'

On January 9, 1975, two days after submittal of the TWX, the fission chamber arrived at the Palisades Plant. At that time, Consumers Power Company again attempted to trace its routing in an effort to preclude a similar recurrence. We have drawn the following major conclusions with respect to the shipment:

1. Emery Air Freight acknowledged receiving the fis$ion chamber on December 4, 1974 in Cleveland, Ohio.

2. The fission chamber was shipped from Cleveland to Chicago O'Hare on about December 11, 1974. It is not clear what the status of the fission chamber was between December 4, 1974 and December 11, 1974.

3. The fission chamber remained at O'Hare Airport (apparently in the custody of Emery Air Freight) until December 31, 1974. On December 31, 1974, the fission chamber was received by Associated Truck Lines at their Chicago terminal.

I

\

-4 Mr. Jo G. Kep!r 2 Palisades Plant February 3, 1975

4. The fission chamber left the Associated Truck Lines

.terminal in Chicago on January 2, 1975 and was shown to have arrived in the Benton Harbor terminal of Associated Truck Lines on January 3, 1975.

5. The shipment remained in the Associated Truck Lines Benton Harbor terminal until delivered to Palisades on January 9, 1975.

The quantity of SNM involved is nearly negligible. (Less than 0.5 gram is defined as negligible.) Even so, fission chambers are important to the operation of the Palisades reactor. The expe-rience gained with this shipment will be taken into account when procuring fission chambers in the future.

This report has been classified as Unusual Event 74-3 in the Palisades Plant reporting system for purposes of formally docu-menting the event.

Yours very truly, Ralph B. Sewell (Signed)

RBS/mel Ralph B. Sewell Nuclear Licensing Administrator CC: Directorate of Regulatory Operations, Washington, DC Directorate of Licensing, Washington, DC