B10811, Final Deficiency Rept SD-33 Re Clogged Svc Water Pump Lubricating Water Strainer.Initially Reported on 830331.New Strainers of Increased Mesh Size & New Shaft Sleeves W/Harder Sleeve Matl Will Be Installed by Fall 1983

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Final Deficiency Rept SD-33 Re Clogged Svc Water Pump Lubricating Water Strainer.Initially Reported on 830331.New Strainers of Increased Mesh Size & New Shaft Sleeves W/Harder Sleeve Matl Will Be Installed by Fall 1983
ML20072G405
Person / Time
Site: Millstone Dominion icon.png
Issue date: 06/13/1983
From: Counsil W
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To: Murley T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, B10811, SD-33, NUDOCS 8306280482
Download: ML20072G405 (1)


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June 13,1983 Docket No. 50-423 B10811 Dr. Thomas E. Murley 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: Service Water Pump Lubricating Water Strainer Clogging (SD-33), dated March 31,1983.

Dear Sir:

Millstone Nuclear Power Station, Unit No. 3 Reporting of Potential Significant Deficiencies in Design and Construction: Service Water Pump Lubricating Water Strainer Clogging (SD-33)

In Reference (1), Northeast Nuclear Energy Company (NNECO) reported a potential significant deficiency as required by 10CFR50.55(e). The deficiency involved clogging of the service water pump lubricating water strainers, which if lef t uncorrected could lead to failure of the pump bearings.

i Following the recommendation outlined in Reference (1), NNECO will install new strainers of increased mesh size and replace the existing shaf t sleeves with a harder sleeve material. These corrective actions are to be completed by late fall,1983.

NNECO censiders these corrective actions sufficient to resolve this significant deficiency. Therefore, this letter constitutes our final report closing out all items related to SD-33. We trust the above information satisfactorily responds l to your concerns.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY

[fkJL W. G. Counsil Senior Vice President A

8306280482 830613 4 i PDR ADOCK 05000423 0 PDR l

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