ML20245K582

Forwards Safety Evaluation Concluding That Diverse Scram Sys & Diverse Initiation of Turbine Trip Meet Requirements of 10CFR50.62 Re ATWS Events for Light Water Cooled Nuclear Power Plants

ML20245K582
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/21/1989
From:	Poslusny C Office of Nuclear Reactor Regulation
To:	Tison Campbell ARKANSAS POWER & LIGHT CO.
Shared Package
ML20245K586	List: ML20245K582 ML20245K597
References
TAC-59069, NUDOCS 8907050178
Download: ML20245K582 (5)

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[ June 21, 1989 Docket flo. 50-368 Mr. T. Gene Campbell Vice President, Nuclear Operations Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203

SUBJECT:

SAFETY EVALUATION FOR ARKANSAS NUCLEAR ONE, UNIT 2 (ANO-2)

COMPLIANCEWITHTHEATHSRULE,10CFR50.62(TACNO.59069)

TheATWSRule(10CFR50.62,"RequirementsforReductionofRiskfrom Anticipated Transients Without Scram (ATWS) Events for Light-Water-Cooled Nuclear Power Plants") requires improvements in the design and operatien of commercial nuclear power facilities to reduce the likelihood of failure to shutdown the reactor following anticipated transients, and to mitigate the consequences of an ATWS event. The requirements for Combustion Engineering plants such as Arkansas Fuclear One, Unit 2 (ANO-2) are to provide a diverse scram system (DSS), diverse auxiliary feedwater system (DAFW) actuation, and diverseinitiationofturbinetrip(DTT). Paragraph (c)(E)oftherule ,

requires that information sufficient to demonstrate compliarce with the d requirements be submitted to NRR.

Arkansas Power & Light Company provided information concerning implementation of the ATWS Rule requirements at ANO-2 by letters dated November 3,1988 February 2 and February 21, 1989. The staff has reviewed this information and as discussed in the enclosed Safety Evaluation has concluded that the DSS and DTT designs are acceptable. AP&L's request for exemption from installing a diverse auxiliary feedwater actuation circuitry was addressed in the staff's letter to AP&L dated February 16, 1989. Implementation of the ATWS Rule l

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. I Mr. T. Gene Campbell  :

1 should be independent of the staff's review of the DAFW system. The compliance l of the DAFW with the ATWS Rule will be determined by a post-implementation review and inspection at ANO-2. This TAC will be closed out at that time.

Sincerely, M/

Chester Poslusny, Jr., Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

See ne::t page ]

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G7 Holahan' " L. Rubenstein f. Habdon P. Noonan l C. Poslusny D. Lynch A. Thadani S. Newbe:*ry H. Li OGC-Rockville E. Jordan B. brines i ACRS (10) PD4 Plant File l DOCUMENT NAME: AN02 TAC 59069

• SEE PREVIOUS CONCURRENCES:

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PNoonan HLi SNewberry CPosiusny:sr FHebdon I 06/05/89 06/08/89 06/12/89 06 /89 06/11/89  ;

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- Mr. T. Gene Campbell -

L 'should be independent of the staff's review of the DAFW system. The compliance h

of the DAFW with the ATWS Rule will be determined by a post-implementation review and inspection at ANO-2. This TAC will be closed out at'that time.

Sincerely,.

/d Chester Poslusny, Jr., Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

See next page DISTRIBUTION D3&et F(TE- NRC FDR Lucal PDR PD4 Recding G. Holahan L. Rubenstein F. Hebdon P. Noonan C. Poslusny D. Lyn:h A. Thadani S. Newberry H. L1 OGC+Rockville E. Jcrdan B. Grimes ACRS(10) P04 Plant File DOCUMENT NAME: AFC2 TAC 59069

• SEE PREVIOUS CONCURRENCES:

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should be independent of the staff's review of the DAFW system. The compliance of the DAFW with the ATWS Rule will be determined by a post-implementation review and inspection at ANO-2. This TAC will be closed out at that time.

Sincerely, h a Chester Poslusny, Jr. , roject Manager Project Directorate - IV Division of Reactor Projects - III,

.IV, V and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated

cc w/ enclosure:.

See next page

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Mr. T. Gene Campbell Arkansas Power & Light Company Arkansas Nuclear One, Unit 2

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cc:

Mr. Dan R. Howard, Manager Mr. Charles B. Brinkman, Manager Licensing Washington Nuclear Operations i Arkansas Nuclear One Combustion Engineering, Inc.

P. O.-Box 608 12300 Twinbrook Parkway, Suite 330 Russellville, Arkansas 72801 Rockville, Maryland 20852 Mr. James M. Levine, Executive Director i Site Nuclear Operations Honorable Joe W. Phillips Arkansas Nuclear One County Judge of Pope County P. O. Box 608 Pope County Courthouse Russellville, Arkansas 72801 Russellville, Arkansas 72801 Mr. Nicholas S. Reynolds Bishop, Cook, Percell & Reynolds 1400 L Street, N.W.

Washington, D.C. 20005-3502 Regional Administrator, Region IV U.S. Nuclear Regulatory Comission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Senior Resident Inspector U.S. Nuclear Regulatory Comission 1 Nuclear Plant Road Russellville, Arkansas 72801 Ms. Greta Dieus, Director '

Division of Environmental Health i'rotection Arkabsts Department of Health 4815 West karkam Street Little Rock, frrkansas 72201 Mr. Robert B. f.orsum Babcock & Wilcox Nuclear Power Generation Division 1700 Rockville Pike, Suite 525 Rockville, Maryland 20852 l

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