ML20247M179

Forward SER Re multi-unit Probabilistic Risk Assessment for Browns Ferry Nuclear Plant Unit 3 Submitted by Util on 980414.NRC Unable to Conclude That TVA Has Met Intent of GL 88-20 Re Individual Plant Exam.Evaluation Terminated

ML20247M179
Person / Time
Site:	Browns Ferry
Issue date:	05/20/1998
From:	De Agazio A NRC (Affiliation Not Assigned)
To:	Zeringue O TENNESSEE VALLEY AUTHORITY
Shared Package
ML20247M183	List: ML20247M179 ML20247M190
References
GL-88-20, TAC-M74384, NUDOCS 9805260192
Download: ML20247M179 (3)

Text

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' Mr. O. J. Zdringue May 20, 1998 l l v

• Chief Nucl::sr Officer I cnd Executiva Vice President: l Tennessee Valley Authority - ]

L. 6A Lookout Place -!'

l 1101 Market Street Chattanooga, Tennessee 37402-2801 i

SUBJECT:

BROWNS FERRY, UNIT 3, INDIVIDUAL PLANT EXAMINATION (IPE) AND UNIT 2 MULTI-UNIT PRA - GENERIC LETTER 88-20 (TAC NO. M74384)

Dear Mr. Zeringue:

On April 14,1995, the Tennessee Valley Authority (TVA) submitted the multi-unit probabilistic j risk assessment (MUPRA) for the Browns Ferry Nuclear Plant (BFN), Units 1,2 and 3. The l

MUPRA was submitted to resolve the staff's concems regarding risk implications of operating all 1 three reactors at the BFN site. On June 19,1997, the U.S. Nuclear Regulatory Commission I (NRC) requested additional information necessary for the staff to complete its evaluation of the j . MUPRA. TVA has chosen not to respond to this request for additional information with a l- technical submittal. Based on the information that has been provided to date, the staff is unable l.

to conclude that TVA has met the intent of Generic Letter 88-20. The staff believes that TVA has failed to provide a convincing argument that either the MUPRA or the Unit 3 PRA adequately j meets the objectives of Generic Letter 88-20. Therefore, the staff has terminated its evaluation i

l activities for the Browns Ferry MUPRA, and the Unit 3 Individual Plant Examination (IPE) for

. intemal events and intomal flood.

In your July 7,1997, response to our June 19,1997, letter, you requested a meeting between 1 TVA and NRC senior management to discuss resolution of the outstanding issues. The enclosed i

staff evaluation may be helpful in this respect. I will be in contact with Mr. T. E. Abney, Browns Ferry Manager of Licensing and industry Affairs, to arrange the meeting you requestad.

Sincerely, -c

/s/

Alber1 W. De Agazio, Sr. Project Manager Project Directorate ll-3 Division of Reactor Projects - 1/ll Office of Nuclear Reactor Regulation Docket No. 50-296 Serial No. BFN-98-011

Enclosure:

Staff Evaluation cc w/ encl: See next page I DISTRIBUTION:

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L% UNITED STATES l i'b j NUCLEAR REGULATORY COMMISSION l p WAsHINeToN, D.c. 308s6 0001 May'20, 1998 Mr. O. J. Zeringue

Chief Nuclear Omcor l and Executive Vice Presioent Tennessee Valley Authority 6A Lookout Place -

1101 Market Street -

l Chattanooga, Tennessee 37402-2801

SUBJECT:

BROWNS FERRY, UNIT 3, INDIVIDUAL PLANT EXAMINATION (IPE) AND l UNIT 2 MULTI-UNIT PRA - GENERIC LETTER 88-20 (TAC NO. M74384) l

Dear Mr. Zeringue:

l On April 14,1995, the Tennessee Valley Authority (TVA) submitted the multi-unit probabilistic l risk assessment (MUPRA) for the Browns Ferry Nuclear Plant (BFN), Units 1,2 and 3. The

!. MUPRA was submitted to resolve the staff's concems regarding risk implications of operating all three reactors at the BFN site. On June 19,1997, the U.S. Nuclear Regulatory Commission j (NRC) requested additional information necessary for the staff to complete its evaluation of the MUPRA. TVA has chosen not to respond to this request for additional information with a tecnnical submittal. Based on the information that has been provided to date, the staff is unable to conclude that TVA has met the intent of Generic Letter 88-20. The staff believes that TVA has failed to provide a convincing argument that either the MUPRA or the Unit 3 PRA adequately meets the objectives of Generic Letter 88-20. Therefore, the staff has terminated its evaluation activities for the Browns Ferry MUPRA, and the Unit 3 Individual Piant Examination (IPE) for intemal events and infomal flood.

In your July 7,1997, response to our June 19,1997, letter, you requested a meeting between TVA and NRC senior management to discuss resolution of the outstanding issues. The enclosed l staff evaluation may be helpful in this respect. I will be in contact with Mr. T. E. Abney, Browns i l Ferry Manager of Licensing and Industry Affairs, to arrange the meeting you requested.

Sincerely, .

Albert W. Agazio, Sr. Proje Manager Project Directorate 11-3 Division of Reactor Probcts -1/Il l

Office of Nuclear Reactor Regulation I

Docket No. 50-296 Serial No. BFN-98-011

Enclosure:

Staff Evaluation cc w/ encl: See next page i

s

• C

! 4 Mr O. J. Zeringue BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:

Mr. J. A. Scalice, Senior Vice President Mr. Mark J, Burrynski, Managar Nuclear Operations Nuclear Licensing Tennessee Valley Authority Tennessee Valley Authority

, 6A Lookout Place 4J Blue Ridge 1101 Market Street 1101 Market Street Chattanooga, TN 37402-2801 Chattanooga, TN 37402-2801 Mr. Jack A. Bailey, Vice President Mr. Timothy E. Abney, Manager Engineering & Technical Services Licensing and Industry Affairs Tennessee Valley Authority Browns Ferry Nuclear Plant 6A Lookout Place Tennessee Valley Authority 4 1101 Market Street P.O. Box 2000 Chattanooga, TN 37402-2801 Decatur, AL 37402-2801 Mr. C. M. Crane, Site Vice President Regional Administrator, Region 11 4 Browns Ferry Nuclear Plant U.S. Nuclear Regulatory Commission Tennessee Valley Authority 61 Forsyth Street, SW., Suite 23T85 l

l P.O. Box 2000 Atlanta, GA 30303-3415 Decatur, AL 35609

, Mr. Leonard D. Wert l General Counsel Senior Resident inspector Tennessee Valley Authority U.S. Nuclear Regulatory Commission {

ET 10H Browns Ferry Nuclear Plant '

400 West Summit Hill Drive 10833 Shaw Road Knoxville, TN 37902 Athens, AL 35611 l

Mr. Raul R. Baron, General Manager State Health Officer l Nuclear Assurance Alabama Dept. of Public Health Tennessee Valley Authority 434 Monroe Street 4J Blue Ridge Montgomery, AL 35130-1701 j 1101 Market Street Chattanooga, TN 37402-2801 Chairman Limestone County Commission Mr. Karl W. Singer, Plant Manager 310 West Washington Street j Browns Ferry Nuclear Plant Athens, AL 35611  !

l Tennessee Valley Authority l P.O. Box 2000 Decatur, AL 35609  !

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