ML19210B379

Responds to 730927 Ltr Re Removal of Upper Bearing Plates for Vertical Tendons V-79 & V-105 on 730928.Summarizes Findings of Subsequent Satisfactory Insp

ML19210B379
Person / Time
Site:	Three Mile Island
Issue date:	10/24/1973
From:	John Miller METROPOLITAN EDISON CO.
To:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 7911070701
Download: ML19210B379 (2)

Text

AEC '" '1IEUTION FOR PART 50 DOCKET W" 3

, (TDiPCRARY FOPJI) CONTROL NO

7910 FILE:

FROM: DATE CF DOC DATE REC'D LTR Met 0 RPT OTHER Metropolitan Edison Company Reading, Pa. 19603 10-24-73 10-30-73 X J. G. Miller TO: ORIG CC OTHER SENT AEC PDR X R. C. DeYoung 1 signed SENT LOCAL PDR X CLASS UNCLASS PROP IhTO INPUT NO CYS REC'D DOCKET NO:

XXX 1 50-289 DESCRIPTION: ENCLOSURES:

Ltr re our 9-27-73 Itr,....... furnishing info .

regarding Reactor Containment Concrete Examin-ation..............

ACKNOWLEDGED PLANT NAME: Three Mile Island Unit 1 DO NOT RDIOVE FOR ACTION /INFORMATION 10-31-73 GC BUTLER (L) ,4CWENCER(L) ZIEMANN(L) REGAN(E)

W/ Copies W/4 Copies W/ Copies W/ Copies CLARK (L) STOLZ(L) DICKER (E)

W/ Copies W/ Copies W/ Copies W/ Copies GOLLER(L) VASSALLO(L) KNIGHION(E)

W/ Copies W/ Copies W/ Copies W/ Copies KNIEL(L) SCHDiEL(L) YOUNGBLOOD(E)

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& n,,nma ,w.x,n, METRCPOLITAN EDISON COMPANY .

POST OFFICE BOX 542 REACING, PENNSYLVANI A 19603 TELEPHONE 215 - 929-3601 October 24, 1073

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Mr. R. C. DeYoung, Assistant Director U 'N. R, 's d<,

for Pressurized Water Reactors fd f 'Q s

[r -- j OpgO r, ",~'- 737J x' gO.N'# ~f Directorate of Licensing ,,

Office of Regulation D -

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Washington, DC 20545 k

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SUBJECT:

THREE MILE ISLAND NUCLEAR TAII.ON . , J .' ,'

REACTOR CONTAINMENT CONCRETE EXAMINATION qc; $x UNIT 1 '- = l DOCKET No. 50-289

Dear Mr. DeYoung:

in response to your letter of September 27, 1973, the upper bearing plates for vertical tendons number V-79 and V-105 were removed on September 28, 1973. The subsequent inspection of the concrete beneath the bearing plates was made in the presence of Mr. Seth Folsom of the Atomic Energy Comission's Regulatory Operations Region I office.

The inspection indicated the following:

(1) Typical surface voids due to air and water migration were considered normal.

(2) Honey Combing did not exist.

(3) The concrete surface was observed to be sound and capable of transferring the tendon prestress force into the structure.

(4) There was no evidence of concrete crushing, cracking, spalling, or any other destress.

It was concluded that the concrete is sound and appropriate for its intended use.

~

Very truly yours, N . g .,

, m t. N J. G. Miller Vice President cc: Mr. H. M. Dieckamp 1584 320 ..,

Mr. W. A. Verrochi -,,b J .i