ML20065M633

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Interim Deficiency Rept Re Failure of Pinion Gear Shear Keys in Limitorque Model SBO (SD-25).Initially Reported on 820804.Util Currently Awaiting Info from Vendor.Next Rept Expected by 821115
ML20065M633
Person / Time
Site: Millstone Dominion icon.png
Issue date: 10/06/1982
From: Counsil W
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, AEC-MP-3-290, B10553, NUDOCS 8210210340
Download: ML20065M633 (1)


Text

General Offices e Selden Street, Berhn. Connecticut NORTIMAST UTILITIES '

9 s tes a cowa= HARTFORD CONNECTICUT 06141-0270 m.o a .ma mma co***'

oat .se e v ues aw cowac (203) 666-6911 sensrteg ast eGlas gestmGv ConsPa887 October 6,1982 Docket No. 50-423 AEC-MP3-290 B10553 Mr. Ronald C. Haynes Region I Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Reference:

(1) W. G. Counsil letter to R. C. Haynes, Millstone Nuclear Power Station, Unit No. 3, Reporting of Potential Significant Deficiencies in Design and Construction: Failure of Pinion Gear Shear Keys in Limitorque rnodel SBO (SD-25), dated September 3, 1982.

Gentlemen:

Millstone Nuclear Power Station, Unit No. 3, Reporting of Potential Significant Daficiencies in Design and Construction: Failure of Pinion Gear Shear Keys in Limitorque Model SBO (SD-25)

As required by Title 10, Code of Federal Regulations Part 50, Paragraph 55(e),

Northeast Nuclear Energy Company (NNECO) reported a potential significant deficiency in the construction of Millstone Unit No. 3 on August 4,1982 (Reference (1)). The potential significant deficiency regarded the failure of pinion gear shear keys in Limitorque model SBO motor operated valves.

At present we are still unable to provide a final report describing the corrective and preventative measures ta be taken because we are waiting for vendor information. We are also una' ale, at this time, to provide a commitment date for the final report. Therefore, to follow this commitment we will provide you with an update by November 15,1982.

Very truly yours, NORTHEA T N CLEAR EN GY COMPANY 2Al/?t//

  • W.~G. Counsil Senior Vice President cc: E. J. Brunner 8210210340 8210i'6 PDR ADOCK 05000A23 1 S PDR jV