ML20072U431

Application for Amends to Licenses DPR-77 & DPR-79,including Rev 1 to Tech Spec 89-30,requesting Withdrawal of 910122 Request to Delete wide-range Containment Pressure & Reactor Vessel Level Instrumentation from Table 3.3-10

ML20072U431
Person / Time
Site:	Sequoyah
Issue date:	04/12/1991
From:	Shell R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20072U435	List: ML20072U431 ML20072U457
References
RTR-NUREG-0737, RTR-NUREG-737, RTR-REGGD-01.097, RTR-REGGD-1.097 GL-83-27, GL-83-37, TAC-75841, TAC-75842, NUDOCS 9104190136
Download: ML20072U431 (3)

Text

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e Tennessee Valley Aathonty 1101 Mrket Street. Chatta%oga Tennessee 37402 APR 121991 TVA-SQN-TS-89-30 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN 1 Document Control Desk Washington, D.C. 20555 Gentlement In the Matter of ) Dockci Nos. 50-327 Tenneasee-Valley Authority ) 50-328

-SEQUOYAH. NUCLEAR PLANT (SQN) - REVISION 1 TO TECHNICAL SPECIFICATION (TS) 89 POSTACCIDENT MONITORING (pAM) INSTRUMENTATION (TAC NOS.

75841/75842).

~ In accordance with 10'CFR 50.90, we are onelosing a requested amendment to Licences DPR-77 and DPR-79 to change the TSs of SQN Units 1 and 2.

In NRC's letter dated December 7, 1990, transmitting Unit 1 License

-Amendment No. 149 and Unit 2 License Amendment. No. 135 (TS PAM Instrumentation),-.the.NRC staff requested that SQN-(1) withdraw the request to delete the wide-range containment pressure and reactor vessel level. instrumentation from Table 3.3-10; (2) propose adding the following two Regulatory Guide (RG) l'.97 Category.1 instruments to Table 3.3-101 (a) containment isolation valve (CIV) position indication and (b) the essential raw cooling water (ERCW) system to auxiliary feedwater (AFW) pumps valve position indication; and (3) withdraw or revise the request to reviso the basis to TS 3/4.3.3.7 concerning RC 1.97 Type A, Category 1, instruments. The letter additionally requests that the action statements for the subcooling margin monitors be revised to be consistent with the guidance in Generic Letter 83-37 as a result of the recent NUREG-0737 and RG 1.97 upgrados.

TVA has reviewed NRC's request and, based upon discussions with the staff, does not currently intend to pursuo justification that only l Type.A, Category 1, parameters are-risk significant. Accordingly, TVA is withdrawing its request made in our application dated January 22, 1990 l (TS 89-30), to delete the wide-range containment precsure and reactor vessel level instrumentation from Tabic 3.3-10 and the originally

! proposed change to the bases to TS 3/4.3.3.7. In addition, Enclosure 1 proposes addition of the RG 1.97 CIV position indication and ERCW system l -

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,s U.S. Nuclear Regulatory Commission hg{g to AFW pumps' valve position indication to the TS and changes necessary to reviso the action statements for the subcooling margin monitors (along with TS 6.8.5.d). Enclosures 1 and 2 contain clarifications on the bases to TS 3/4.3.3.7 concerning RG 1.97 Type A, Category 1, instruments.

i As a result of inclusion of CIV position indication in the TSs, l Enclosure 1 also contains clarifications to Table 3.6-2 of TS 3.6.3.

The justification for the proposed TS change is provided in Enclosure 2. l A proposed determination of no significant hazards consideration l performed pursuant to 10 CPR 50.92 is provided in Enclosuro 3, please direct questions concerning this issue to J. D. Smith at  ;

(615) 843-6672, i l

Very truly yours, l TENNESSEE VALLEY AUTiiORITY

) ,

R. it. Shell, Manager Regulatory Licensing Sworn to y d subsce ed before me this /8 /-.- day of . 5 1991

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Notary public-MyCommissionExpires((" "

Enclosures cc: See page 3 i

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U.S. Nuclear Regulatory Commission hk } h fhgl cc (Enclosures):

American Nuclear Insurers Attention: Librarian The Exchange, Suite 245 270 Farmington Avenue Fannington, Connectleut 06032 Ms. S. C. Black, Deputy Director Project Directorate 11-4 U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. D. E. LaBarge Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Michael H. Mobley, Director (w/o Enclosures)

Division of Radlolog! cal Health T.E.R.R.A. Building 150 9th Avenue, N Nashville, Tennessee 37203 NRC Recident inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy Tennessee 37379 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Coorgia 30323