ML18283B043

Submits 45th Revision to Document Previously Submitted on 4/12/1975, Entitled Plan for Evaluation, Repair, and Return to Service of Browns Ferry Units 1 and 2 (March 22, 1975, Fire).

ML18283B043
Person / Time
Site:	Browns Ferry
Issue date:	06/16/1976
From:	Gilleland J Tennessee Valley Authority
To:	Rusche B Office of Nuclear Reactor Regulation
References
Download: ML18283B043 (7)

Text

NRC FORM 195 I2.78)

NRC DISTRIBUTION Fon PART 50 DOCKET MATERIAL U.S. NUCLL'AR REGULATORY C ISSION DOCKET NUMBER 50-259 FILE NUMBER

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TP>> Mr. B,C. Rusche FROM: TVA DATE OF DOCUMENT Chattanooga, Tenn 37401 6-16-76 J E Gilleland DATE RECEIVED 6-18-76 .

I7IL ET TE R 0 NOTOR Z E 0 I PROP INPUT FORM NUMBER OF COPIES RECEIVED 5toRIGINAL IRUNC LASS I PIE 0 '

QCOP Y 1 signed DEscRIPTIDN Ltr trans the following: ENGLosURE /5th Revison to "Plan for Evalaution, Repair & Return to Service of Browns Ferry 1

& 2 Plant(March 22, 1975 Fire)" ~ ~ ~ ~

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. PLANT NAME: Browns Ferry 1 & 2 Mttlatt/Lip@

os SAFETY FOR ACTION/INFORMATION DHL 6 ASSIGNED AD: ASSX NED AD BRANCH CHIEF:

PROJECT MANAGER: P O.a A' a LICo ASST INTERNAL 0 ISTRI BUTION RED FILE SYSTEMS SAFETY SITE SA NRC PDR'&E HEINEMAN'CHROEDER ENVIRO NA S BENAROYA OELD GOSSXCK & STAFF ENGINEERING IPPOLITO MIPC 'ACCARRY KIRK'OD CASE KNIGHT HANAUER SI1WEIL OPE'RATING REACTORS PAMLICKI PROJECT MANA EMEN RFACTOR SAFE'IIY OPERAT N BOYD ROSS EISENH P COLLINS NOVAK SHAD HOUSTON ROSZTOCZY BAER PETERSON CHECK BUTLER MELTZ GRIMES HELTEMES AT& I SKOVHOLT SALTZMAN RUTBERG EXTERNAL DISTRIBUTION CONTROI NUMBER LPDR: Athens NAT LAB: BROOK11AVEN N TIC: REG VIE ULRIKSON ORNL N$+ ~ LA PDR 6198 >>

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F76 1916 rt yQ JUN 16 >g76 Itegoleto Docile, lie gp Mr, Benard CD Rusche, Director Office of Nuclear Reactor Regulation U.S; Nuclear Regulatory Commission sb Washington, DC 20555

Dear Mr,

Rusche:

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In the Matter of the ) Docket Nos ~ 50-259, Tennessee Valley Authority )

Enclosed are 45 of the 45th revision to a docume'nt previousl submitted on 'April 13, 1975, entitled "Plan for Evaluation, Repair, and Return to Service of Browns Ferry Units 1 and 2 (March 22, 1975, Fire) ~

"'he revision consists of the following:

Evaluation Plan

Material:Revised. ' 'Par't for'ampling, Analysis, and V 'rogram, Cleanup of Residue on Affected Structures, Systems, and Components.

This revision"includes additional information regarding the frequency at which the condition of electrical cables that have been'oated with flame retardant material (Flamemast:ic 71A) will be inspected.

Instructions for entering the 45th revision are also included.

Very truly yours,"

J. E, Gilleland Assistant Manager of Power Enclosures CC: See page 2-An Equal Opportunity Employer

Mr.. Benard C. Rusche JUIII 1.6 1976 CC (E'nclosures):

Mr', Frank Long Regional Office U.S Nuclear Regulatory Commission 230'eachtree Street,.NN,, 'Suite 818 Atlanta, Georgia 30303 Mr. Norman C. Moseley, Director Office (3)'egional U~S ~ Nuclear Regulatory Commission 230'eachtree Street, HM., Suite 818 Atlanta, Georgia 30303 Mrs- C+ H+ Murphy Regional Office U.S; Nuclear Regulatory, Commission 230'eachtree Street, NW , Suite818 Atlanta, Georgia 30303 '

Qgulatory Docket fight Page 15 Part V Section 3 Page 3.5 Recovery Plan BFNP Revised. 6/9/76 Particular attention should be given to cleaning uninsulated terminals.

,6.9.4.1 The transformer shall be reassembled and. each winding given a meggar test with the other windings grounded.

, 6.9.4.2 If the transformer is of the voltage-regulating type with moving parts and electrical contacts, it shall be cleaned, and. treated, as specified in applicable paragraphs of 6.2 (motors) and 6.3 (switchboards). It shall be reassembled, relubricated, and retested in accordance with applicable manufacturer's instructions.

6.9.5 The transformers shall be reinstalled and returned to normal status.

6.10 Reinspection 6.10.1 All electrical equipment, except totally enclosed. motors and.

other sealed. electrical equipment, shall be given a visual inspection, approximate3y six months after the equipment has been cleaned. Particular attention should. be given to the presence of corrosion'products. If any products are noted.,

the equipment shall be recleaned.

6.10.2 A11 cable trays in the units 1 and 2 reactor building shall be

.inspected annually for 5 years for indications of degradation of the cable tray system. If degraded. trays or supports are

'found., they should be replaced as soon as possib3.e. No wholesale degradation and. replacement of cable tray systems

'are expected to occur.

6.10.3 .In response to an ACRS concern that the Flamemastic cocooning of electrical cables changes the working environment, at the first unit 1 refueling outage, at the second. unit 1 refueling outage, and thereafter at approximately every 3 years during the nearest unit 3. refueling outage, a nondivisional low-voltage power cable tray on unit 1 (floor elevation 593) shall have a portion of the Flamemastic cocoon opened., the cables inspected, and a sample of the cable jacketing removed.. The

'acket sample shall be given an ASTM D412 physical and dimensional test for elongation and tensile strength. The test values shall be compared. to previously obtained values to detexmine the aging of the cable materials.

Repairs to the cable jacket shall be made with a cable jacket repair kit, and the open area shall be recoated with Flamemastic.

(see attachments 5 and 5a, memorandums dated April 27, 3.976, and June 9, 3.976, from J. R. Calhoun to H. J, Green, subject; "Browns Ferry Nuclear Plant Units 1 and. 2 - Electrical Cable Surveillance Program" ).

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PLAN FOR EVALUATION, REPAIR~ AND RETURN TO SERVICE OF BROWNS FERRY UNITS 1 AND 2 (MARCH 22, 1975, FIRE)

Filing instructions for June 16, 1976, Revision.

Remove Zesett Part V, section B", page 15, Part V, section B, page 15, Revised 4/30'/76, Revised 6/9/76