ML18144A182

Attached Is Response to IE Bulletin 78-01

ML18144A182
Person / Time
Site:	Saint Lucie
Issue date:	04/14/1978
From:	Robert E. Uhrig Florida Power & Light Co
To:	O'Reilly J NRC/IE, NRC/RGN-II
References
Download: ML18144A182 (3)

Text

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FLORIDA POWER 5 LIGHT COMPANY April 14, 1978 Mr. James P. O'Reilly, Director, Region Office of Inspection and Enforcement II U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W. Suite 818 Atlanta, GA 30303

Dear Mr. O'Reilly:

Re: RII:JPO 50-389 Florida Power and Light Company has reviewed IE Bulletin 78-01 and a response is attached.

Very truly yours,

/pe pc~/

Rober E. Uhrig Vice President REU:MV:sl Atta'chment cc: Harold F. Reis, Esquire Office of Inspection and Enforcement HELPING BUILD FLORIDA

ATTACHMENT Re: RII-JPO 50-389 ITEM 1 Determine if you have installed G. E. type CR120A relays in safety-related equipment or in areas wherein fires have the potential for damaging safety equipment. Also deter-mine if you have such relays in spares inventory or on order.

RESPONSE 1 St. Lucie Unit 2 received a Construction Permit on May 2, 1977 and therefore no relays of the type described in IE Bulletin 78-01 have been installed in this unit.

While it is planned that GE Type CR120A relays will be used in St. Lucie Unit 2 motor control centers, the relays have not been fabricated, and when fabricated will utilize the improved, self-extinguishing flame resistant contact arm retainers. We note that the flammable contact arm retainers were in relays manufactured between May, 1968 and June, 1972; in June, 1972, the retainer material was changed to Valox, a self extinguishing flame resistant material. Therefore, the subject of IE Bulletin 78-01 is not applicable to the GE Type CR120A relays to be used in St. Lucie Unit 2.

ITEM 2 Identify all of the relays that have Celcon contact-arm retainers.

RESPONSE 2 Same response as Item 1 with the following additional information:

We have contacted General Electric, the manufacturer of the St. Lucie Unit 2 motor control centers, and confirmed that they will not use the Celcon contact-arm retainers in St. Lucie Unit 2 relays. As noted in Response 1 and in the attachment to IE Bulletin 78-01, six years ago

Re: RII:JPO 50-389 (June, l972), the Celcon material was changed to Valox 3l0-SEO which is self-extinguishing and flame resistant.

ITEM 3 For those relays which have Celcon retainers, develop a program for their replacement with Valox retainers. The program should include:

a. Identification of the location of the relays

b. The schedule for the replacement of the Celcon retainers

c. The procedure that will be used to perform the replacement, including the means that you will use to differentiate between the Valox and Celcon retainers.

RESPONSE 3 Same response as to Items 1 and 2 above with the following additional information:

As indicated ~su ra Item 3 is not applicable to St. Lucia Unit 2.