ML19254F968

Affidavit Attesting That After Working as Millwright General Foreman at Facility During Oct 1978-Feb 1979,acquired Knowledge of Facts Re Clean Metal Shavings in Control Rods. Chips Still Remain in Blades

ML19254F968
Person / Time
Site:	Zimmer
Issue date:	05/21/1979
From:	Reynolds G AFFILIATION NOT ASSIGNED
To:
Shared Package
ML19254F962	List: ML19254F964 ML19254F965 ML19254F968
References
NUDOCS 7911190535
Download: ML19254F968 (2)

Text

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ATTACHMENT A f, .. Q . ,

AFFIDAVIT OF GORMAN I,. RETNOLDS STATE OF OHIO )

) SS COUNTY.0F CLERMONT )

I, Gorman L. Reynolds, aged 29, residing at Rt. 2, Box 69,Cseaman, County of Adams, Ohio, hereby state that I am a member of Millwright Local 1454: that I have been' a journeyman Millwright for six years: .

that I worked for Reactor Control Inc. as Millwright general foreman at the Zimmer nuclear power station, Moscow, Ohio from October, 1978 to February, 1979: and that I have personal knowledge of the facts hereinafter related:

i While working for Reactor Control Inc.(R.C.I. ), my crew was required ,

to clean metal shavings from control rod blades. These shavings were left by the manufacturer. We first took old cloths wrapped with a heavy gray tape and beat the sides of the blades to remove these shavings.

We then ran a magnet along them followed by a machine shop vaccum cleaner and finally wiped then down with an acetone solution. Quality control inspectors employed by R.C.I. then ran a spot check on the blade con-formity with a "go-no go gauge". Only about one third of the blades l

were checked. f n l

In February, R.C.I. required my crew to do grinding on all the control rods (at the bottom of the blades) to remove an over-sized weld.

Small metal fragments from the grinding went into the control rod blades >

by way of small holes running the length of them. When I informed R.C.I.

engineers of this I was told that these fragments could clog the rods and to wipe them down with an acetone solution. I then told my super-7 911190(j$~j3d5

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visors that wiping with acetone alone did not get the shavings out. (The proper procedure for removing shavings was the procedure we initially used to remove 1; hose left by the manufacturer.) They inspected 1;he Ttnis and passed them anyway.

When we first started the cleaning after grinding, H. I. Crane, project manager for R.C.I., told me the job would last two weeks it lasted two days. We were rushed through this job and it is to my knowledge that metal shavings still remain in the control rod blades.

I saw them reported them and R.C.I. passed inspection on them anyway.

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.Gbrman L. lefnolds The foregoing affidavit was sworn to and subscribed before me by Gorman L. Reynolds this j/ day of Mdu

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ATTACHMENT B

. GENER AL @ ELECTRIC wuctura enEnGv PROJkCTS DIVISION GENERAL ELECTRIC COMPANY,175 CURTNER AVE., SAN JOSE, CALIFORNIA 95125 MC 682, (408) 925-3732 April 24,1979 U. S. Nuclear Regulatory Commission Division of Operating Reactors Office of Nuclear Reactor Regulation Washington, D. C. 20555 Attention: Mr. Paul S. Check Division of Operating Reactors Office of Nuclear Reactor Regulation Gentlemen:

SUBJECT:

RESPONSES TO NRC QUESTIONS ON CONTROL BLADE LIFE (B4C LOSS) .

Reference:

F. D. Coffman, Jr. to R. L. Gridley, telecopy of 4/6/79 Attached are the responses to the NRC questions to the referenced communi-cation. These questions were informally transmitted to GE on April 6, 1979. A draft of the responses has been hand carried to you by R. O. Brugge on April 23, 1979. The attachment to this transmittal is the final form of the GE response.

If you have any further questions or comments on this subject, please contact R. O. Brugge of my staff on (408) 925-3360.

Respectfully, R. L. Gridi , Manager Operating Plant Licensing Safety and Licensing Operation RLG:gmm/102D Attachment DUPLICATE DOCUMENT cc: Mr. F. D. Coffman, Jr. !J 7

5 17m DOR /NRR Entire document previously entered into system under:

ANO N o. of pages:

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g ATTACIDENT C GEN ER AL h ELECTRIC HUCLEAR ENERGY PROJECTS DIVISION GENERAL ELECTRIC COMPANY,175 CURTNER AVE., SAN JOSE, CAUFORNIA 95125 MC682,(408)925-3732 .

MFN-178-79 RLG-087-79 '

June 29,1979 -

U. S. Nuclear Regulatory Comission -

Division of Operating Reactors Office of Nuclear Reactor Regulation Washington, D. C. 20555 Attention: Mr. Paul S. Check Division of Operating Reactors '

Office of Nuclear Reacto.r Regulation .

Gentlemen: ,

SUBJECT:

RESPONSES TO NRC ADDITIONAL QUESTIONS ON CONTROL BLADE LIFE (BCLOSS) 4

Reference:

F. D. Coffman, Jr. to A. M. Ervin, telecopy of 6/15/79.

Attached are the responses to the NRC questions to the referenced comunication.

If you have any further questions or coments on this subject, please contact R. O. Brugge of tay staff on (408) 9,25-3360.

Respectfull , '.

• x A/  ! .

'R.'L. Grid y, Manager Operating Plant Licensing Safety & Licensing Operating RLG:sj/389

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Attachment R. C. Stirn cc: Mr. F. D. Coffman, Jr.

DOR /NRR DUPLICATE DOCUMENT Entire document previously entered into system under:

e , ANO No. of pages: