ML19209C448

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Deficiency Rept:On 790920,oil Leakage from Motor Housing Revealed Defect in Casting for Lower Reservoir of Shaft End Bearing on Motor 3AF-P2A.Insp of Three Similar Motors Shows Possible Defect in Unit 4 Motors.Onsite Insp Scheduled
ML19209C448
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 09/25/1979
From: Brown S
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
References
NUDOCS 7910150577
Download: ML19209C448 (2)


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q,c 3 28 Serial No. 784 Mr. James P. O'Reilly, Director PSE&C/JMD:adw:me Office of Inspection & Enforcement U.S. Nuclear Regulatory Conmission Docket Nos. 50-404 Region II 50-405 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

a report was made under the provisions On September 20, 1979, of 10CFR50.55(e) concerning an apparent casting defect in the shaft bearing housi_ng for the North Anna Unit 3 Auxiliary Feed Pump Motor 3AF-P2A.

In accordance with the reporting requirements of 10CFR21, the following infonnation is submitted:

Name and address of reporting individual:

A.

Mr. E. A. Baum, Executive Manager Licensing and Quality Assurance Virginia Electric and Power Company P. O. Box 26666 Richmond, Virginia 23261 Facility, activity and/or component affected:

B.

North Anna Power Station, Units 3 and 4 Auxiliary Feed Pump Motors Name of finn constructing the facility or supplying the component, C.

activity or service:

Bingham-Williamette Co.

2800 N.W. Front Avenue Portland, Oregon 97210 Description of defect, deficiency, or failure to comply:

D.

Oil leakage from a motor housing led to an investigation a

that showed a defect in the casting for the lower reser-Visual voir of shaft drive end bearing on motor 3AF-P2A.

inspection of three other similar motors shows a possible defect in North Anna Unit 4 ',aotors 4AF-P2A and 4AF-P2B.

6 UY 1145 ?32 GFFICIAL COPY 7910150 5 77

,..s-Mr. James P. O'Reilly 2

The vendor has been notified and a representative is scheduled to provide on-site inspection to determine corrective action to be taken.

E.

Date of detemination of reportability:

September 20, 1979 F.

Similar components, activities, or services:

None.

G.

Corrective action which has been, is being or will be taken, the individual responsible and the lenoth of time to complete the action:

The vendor's representative is scheduled to the job site for an investigation and the results will detemine the corrective action to be taken and the time to complete.

H.

Other infomation:

None.

Any infomation not available at this time will be submitted in a follow-up letter as a 30-day report.

Should you require further information, pleas contact thi office.

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Senior ice President-Pow.r tation gineering and Con t ction cc: Director, Office of Inspection and Enforcement (3) 1145 233