ML19031B654

Submit Report with Detailed Analysis Regarding Failure of Fan Coil Unit Motor No. 15 to Meet Test Requirements in Starting Reliably at Low Speed

ML19031B654
Person / Time
Site:	Salem
Issue date:	07/01/1976
From:	Schwalje E Public Service Electric & Gas Co
To:	O'Reilly J NRC Region 1
References
Download: ML19031B654 (2)

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.. /,. - .:I' Public Service Electric and.Gas Company 80 Park Place Newar.k, N.J. 07101 Phone 201 /622-7000 July 1, 1976 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. O'Reilly:

FAN COIL UNIT MOTOR NO. 15 NO. 1 AND 2 UNITS SALEM NUCLEAR GENERATING STATION On Jupe 11, 1976 a verbal report was made to RegiQn 1, Office of Inspec~ion and Enforcement advising that a Fan Coil Unit Motor on No. 1 Unit, Salem failed to meet the test requirements in starting reiiably at low speed. This report was in accoraance with the provisions of 10CFR50.55(e).

The following is ~ detailed analysis and report on the subject:

DESCRIPTION OF DEFICIENCY The Fan Coil Unit Motors used at Salem are rated l00/300HP, 46ov. During the initial test p~ocedure, the No. 15 Motbr failed to start on the low speed setting. The motor .was removed and sent to the Westinghouse Repair Facility in Philadelphia to diagnose the problem and effect repair.

At the repair shop, the unit was disassembled and a thorough inspection of the motor stater and rotor revealed no deficiencies. The motor was reasiembled and successfully

-passed tests, both loaded and unloaded, at the repair shop.

The motor was returned to and reinstalled at the site.

After several successful starts, the motor exhibited inter-mittent starting problems identical to the initial difficuiti~s.

Following the second series -of starting problems, the motor was returned to the Westinghouse factory at*Buffalo for a more comprehensive evaluation. This investigation is currently in progress _and a resolution of the problem is expected shortly.

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95-2001 (400M) 5-73

Mr. James P.

O'~eilly

• 7I1/ 76 SAFETY IMPLICATION The problem was discovered during the initial testing phase as part of the planned startup program and, therefore, the health and safety of the public were not affected by the test failure ..

CORRECTIVE ACTION A fan coil unit motor from the Salem No. 2 Unit has been trans- \

ferred to No. 1 Unit and installed in place of the No. 15 Fan *

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~ I Coil Unit Motor. It was tested on June 18, 1976 and performed satisfactorily to date. The faulty motor returned to Westinghouse i will be corrected and fully tested to meet the specified require- 'ir.

r, ments in the No. 2 Unit, Fan Coil Units.

The results of the Westinghouse corrective action will be at the i'

site for future review following completion of work. No further i reporting ~f this item is contemplated *. I Should you require additional informatioQ our engineers will be t

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available to discuss the details with you.

Very truly yours, Manager of Quality Assurance Engineering and Construction Department CC: Dr. Ernest Volgenau Bethesda*, Md.