ML20236D142

Advises That Response to NRC Bulletin 88-004, Potential Safety-Related Pump Loss Complete for Unit 2 Only. Schedule for Responses for Units 1 & 3 Expected within 30 Days

ML20236D142
Person / Time
Site:	Browns Ferry
Issue date:	03/01/1989
From:	Black S Office of Nuclear Reactor Regulation
To:	Kingsley O TENNESSEE VALLEY AUTHORITY
References
IEB-88-004, IEB-88-4, TAC-69888, TAC-69889, TAC-69890, NUDOCS 8903220482
Download: ML20236D142 (4)

Text

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k.g.- UNITED STATES '

NUCLEAR REGULATORY COMMISSION '

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,  ! j; WASHINGTON, D C. 20555 K' ***** ]

March 1, 1989.~ Li Docket Nos. 50-259, 50-260, 50-2'96  !

q Mr. - Oliver D. Kingsley, Jr.

Senior Vice President, Nuclear Power

- Tennessee Valley' Authority 6N 38A Lookout Place j 1101 Market. Street >

Chattanooga, Tennessee'37402-2801

Dear Mr. Kingsley:

1

SUBJECT:

RESPONSE TO NRC BULLETIN 88 BROWN'S FERRY NUCLEAR PLANT, J UNITS 1, 2 AND 3, (TACS'69888, 69889, 69890) 0n May 5, 1988, the'NRC staff issued NRC Bulletin 88-04, " Potential Safety-Related Pump Loss." The bulletin' requested the-evaluation'of all

. safety-related pumps' for 1) pump-to-pump ' interaction 'during miniflow operation'that could result in dead-heading of one or more of the pumps'and

2) the adequacy of the minimum flow bypass lines with respect to damage .!

resulting from operatiot, and testing in.the minimum flow' mode. The bulletin- >

l. also requested ~that within 60 days of' receipt of the bulletin,. licensees:

l provicie a written response that (a). summarizes' the problems and the' systems . 1 affected, (b) identifies the short-term and long-term modifications to plant .

operating procedures or hardware that have been or are being. implemented to ensure' safe plant operations, (c) identifies an appropriate schedule for long-term resolution of this and/or other significant problems that are identified as a.

result of this bulletin, and (d) provides justification for continued operation a particularly wi'h regard to General Design Criterio'n'35 of: Appendix A to-Title i

.10 CFR 50.46, " Acceptance Criteria for Emergency Core Cooling Systems:for' Light.

~

Water Nuclear Power Reactors." Additionally,.the staff requested that within {

30 days of completion of the long-term resolution actions, that licenseesiprovide  !

a written response describing the actions taken.

By letter dated September 30, 1988, you responded to. Bulletin 88-04 and your response adequately provided the information requested in a,;b, c, and d above for Unit 2. However, you must still provide us with your schedule for long term resciution (item c above) of the problem described in'NRC Bulletin 88-04 for Units 1 and 3. You should also clarify all actions required by items a, b and d above for Units 1 and 3.

Your response committed to completing long-term resolution ?ctions for' Unit'2 prior to restart of Unit 2. Your requirements'for responding to Bulletin 88-041 1

.are complete with regard to' Unit 2 only. Within 30. days of your receipt of '

this letter we expect'a senedule for responses to Bulletin 88-04 for Units'1 and 3.

i i

6903220482 890301

'PDR ADOCK 03000259 0 _ . _ _ 3

+

. 1 Mr. Oliver D. Kingsley, Jr. 3- Browns Ferry Nuclear Plant cc:

General Counsel Regional Administrator, Region II Tennessee Valley Authority U.S. Nuclear Regulatory Comission 400 West Sumit Hill Drive 101 Marietta Street, N.W.

Eli B33 Atlanta, Georgia 30323 Knoxville, Tennessee 37902  ;

Resident Inspector / Browns Ferry NP l Mr. R. L. Gridley U.S. Nuclear Pegulatory Comission (

i Tennessee Valley Authority Route 12, Box 637 SN 157B Lookout Place Athens, Alabama 35611 Chattanooga, Tennessee 37402-2801 Mr. C. Mason Dr. Henry Myers, Science Advisor l Tennessee Valley Authority Committee on Interior Browns Ferry Nuclear Plant and Insular Affairs P.O. Box 2000 U. S. House of Representatives Decatur, Alabama 35602 Washington, D.C. 20515 Tennessee Valley Authority Mr. P. Cerier Rockville Office Tennessee Valley Authority 11921 Rockville Pike f Browns Ferry Nuclear Plant Suite 402 1 J

P.O. Box 2000 Rockville, Meyhnd 20852 Decatui', Alabama 35602 1

Mr. D. L. Williams Tennessee Valley Authority ,

l 400 West Summit Hill Drive W10 B85 Knoxville, Tennessee 37902 i

Chainnan, Linestone County Commission P.O. Box 188 l i

Athens, Alabama 35611 l Claude Earl Fox, M.D. l State Health Officer State Departnent of Public Health  ;

State Office Building Montgomery, Alabama 36130  ;

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As discussed in Bulletin 88-04, you should document and maintain for at least-two years an evaluation of your actions in' responding to the bulletin. These records may be subject to future auditing.

Sincerely, ,

Original ' signed by  ;

Suzanne ~C. Black, Assistant Director for' Projects.

TVA Projects Division Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket Ille NRC PDR Local PDR Projects Reading ADSP Reading l DCrutchfield l BDLiaw SBlack RPierson FMcCoy WSlittle J

MSimms I

GGears DMoran JRutberg SVarga BGrimes EJordan ACRS(10)

GPA/PA GPA/CA TAleAion 1 BFN NMarki Rdg'sohn l

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0FC :NRR:TVA/LA* :NRR:TVA/PM* :NRR:TVA/PM* :TVA:AD/

...__:............:..._______ ..:.........___:___. g4.__:._________...__________.:.__________

NAME :MSimms :NMarkisohn:dw GGears :SBlac  :  :  : :

. . . . .:2/22/89 DATE  : . . . . .. _ _:2/22/89 _ _ _ _ _ _ _ _ _ . : . . . .: . _ _ _ _ _ _: . :3 /0 // 8 9:

_ _ . _ : _ _ _:2/22/89  :

OFFICIAL RECORD COPY

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=

Docket Nos. 50-259, 50-260, 50-296 Distribution Docket File WSlittle GPA/CA NRC PDR MSimms BFN Rdg. .

Local PDR GGears TAlexion Projects Rdg DMoran Mr. Oliver D. King.;1ey, Jr. ADSP Rdg. JRutberg Senior Vice President, Nuclear Power DCrutchfield SVarga Tennessee Valley Authority BDLiaw BGrimes  ;

i 6N 38A Lookout Place SBlack EJordan 1101 Market Street RPierson ACRS(10) i Chattanooga, Tennessee 37402-2801 FMcCoy GPA/PA j

Dear Mr. Kingsley:

3

SUBJECT:

RESPONSE TO NRC BULLETIN 88-0a - BROWN'S FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3, (TACS 69888, 69889, 69890) 1 On May 5,1988, the NRC staff issued NRC Bulletin 88 04, '" Potential Safety-Related Pump Loss." The bulletin requested the evaluation of ell safety-related pumps for 1) pump-to-pump interaction during miniflow operation that could result in dead-heading of..one or more of the pumps and

2) the adequacy of the mininum flow bypass lines with respect to damage resulting from operation and testing in the minimum flow mode. The bulletin ,

also requested that within 60 days of receipt of the bulletin, licensees )

provide a written response that (a) summarizes the problems and the systems affected. (b) identifies the short-term and long-term modifications to plant operating procedures or hardware that have been or are being implemented to ensure safe plant operations (c) identifies an appropriate schedule for long-term resolution of this and/or other significant problems that are identified as a result of this bulletin, and (d) provides justification for continued operation particularly with regard to General Design Criterion 35 of Appendix A to Title i 10 CFR 50.46, " Acceptance Criteria for Emergency Cc*e Cooling Systems for Light Water Nuclear Power Reactors." Additionally, the staff requested that within 30 days of completion of the long-term resolution actions, that licensees provide a written response describing the actions taken.

By letter dated September 30, 1988, you responded to Bu'11etin 88-04 and your response adequately provided the information requested in a, b, c, and d above.

However, in order to confirm the adequacy of the miniflow design, completion of the Design Calculation Review Program for Safety Related Pumps is due at least 30 days prior to restart of each unit.

l Sincerely, 1

Suzanne C. Black, Assistant Director for Projects TVA Projects Division 1 Office of Nuclear Reactor Regulation I cc:

See next page OFC :NRR:TVA/LA :NRR:TVA/PM  : Y :TVA:AD/P  :  :  :

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...__ .........__.:.......... ..:,P/  % /89 DATE /yGL/89 :J/d,7 /89  :  : / /89  :  :  :

OFFICIAL RECORD COPY l