ML19290B993

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Forwards IE Circular 79-23, Motor Starters & Contactors Failed to Operate. No Response Required
ML19290B993
Person / Time
Site: Cooper 
Issue date: 11/26/1979
From: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To: Pilant J
NEBRASKA PUBLIC POWER DISTRICT
References
NUDOCS 8001090020
Download: ML19290B993 (1)


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NUCLEAR REGULATORY COMMISSION PDR:HQ REGloN IV

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November 26, 1979 Docket No.

50-298 Nebraska Public Power District ATTN:

J. M. Pilant, Director Licensing & Quality Assurance Post Office Box 499 Columbus, Nebraska 68601 Centlemen:

The enclosed IE Circ.ular 79-23 is forwarded to you for your information.

No wTitten response to this circular is required.

If you have any questions related to the subject, please contact this office.

Sincerely,

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K. V. Seyfrit Director

Enclosures:

1.

IE Circular No. 79-23 2.

List of Plants That May Have Received Defective Starter or Contectors 3.

List of Recently Issued IE Circulars cc:

L. C. Lessor, Superintendent Cooper Nuclear Station Post Office Box 98 Brownville, Nebraska 68321 1729 100 8 o o 10900 2O

UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.

20555 IE Circular No. 79-23 Date: November 26, 1979 Page 1 of 1 7 9 fo 2 50 4'9d MOTOR STARTERS AND CONTACTORS FAIIID TO OPERATE Gould, Inc., Electrical Products Group, reported to the NRC on September 11, 1979 potential defects in certain NEMA Size 3, Starters and Contactors.

A possible binding or seisure of the carrier assembly, within the support plate of the stationary contact assembly, is caused by an undersized dimension of the support legs.

Starters and contactors with date code 7822 to 7935, model and serial numbers A10, All, A12, A13, A14, A20, A21, A22, and P10 are involved.

Faulty units were manufactured and distributed between June 1, 1978 and August 30, 1979.

The attached listing of nuclear plants, which have received some of this motor control equipment, represents a preliminary check of shipment records. This listing, however, may not be complete.

Goula, Inc., will recall uninstalled items for retrofit and has retrofit kits available for field installation.

Based on the above, licensees are advised to verify all motor starter and contactor shipments received from Gould, Inc., between June 1, 1978 and August 30, 1979, and assure that applicable model and serial number components are corrected by retrofit and subsequent electrical operation tests.

No written response to this Circular is required.

If you desire additional information regarding this matter, contact the Director of the appropriate NRC Regional Office.

DUPLICATE DOCUMENT Entire document previously enteredintosystemu4nRe 3.9.lnzs0 No. of pages:

1729 101

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