ML20065M860

Forwards Application for Amend to License NPF-3,changing Tech Spec 3/4.3.2.2 to Increase Steam & Feedwater Rupture Control Sys Main Steam Low Pressure Block Permit Setpoint from 700 Psig to 750 Psig

ML20065M860
Person / Time
Site:	Davis Besse
Issue date:	11/30/1990
From:	Shelton D CENTERIOR ENERGY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20065M863	List: ML20065M860 ML20065M868 ML20065M876
References
1875, NUDOCS 9012110236
Download: ML20065M860 (2)

Text

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i l CENTER 00R - i V ENERGY 1

• >i 300 Madtson Avenue  ;

DonM C. SheMon -

Toledo, OH 43652Kl01  !

Vice Presiderd Nm

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Davis Besse (419)249-2 2 -

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Docket Number 50-346.

License Number'NPF-3 Serial Number 1875-1 November 30,-1990 United States Nuclear Regulatory Commission ,

Document Control Desk 1 Vashington, D. C.- 20555

Subject:

License Amendment Request to Revise the Steam and Feedvater i-Rupture Control System.Hain Steam Low Pressure Block Permit l Setpoint i

Gentlemen:

I Enclosed is an application for an amendment to'the Davis-Besse' Nuclear-Power Station, Unit 1 (DBNPS), Operating License, Number NPF-3, Appendix A Technical Specifications. -The proposed changes' involve Technical Specification 3/4.3.2.2, Instrumentation,- Steam and Feedvater Rupture Control System Instrumentation. }

The proposed changes vould : increase 1the1 Steam and Feedvater Rupture Control System (SFRCS) Main Steam (MS) low pressure block _ permit setpoint from 700 "

psig to 750 psig and increase the' steam pressure setpoint'where the block permit is automatically-removed from 750 psig to 800 psig. These changes will increase the pressure margin between the. SFRCS block permit .and :the SFRCS MS low pressure trip setpoint of 591.6 psig. This~. vill ~ minimize the

. possibility of-an inadvertent-MS low pressure trip from< occurring during plant cooldown and heatup operations.

Toledo Edison requests that this amendment be issued-by the Nuclear-Regulatory Commission by June 15,'1991, with implementation within 45-days-following issuance.

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'9012110236 901130 PDR ADOCK 05000346 P PDC 0f Operating Companies.  ! k Cleveland Electric muminating Toledo Edrson

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.. -Dockot Nu ber 50-34'? 6-

• . Liccusa Nunbar NPF-3 Serial Number 1875 iPage 2 If you have any questions-regarding this amendment request, please contact-Mr.-.R. V. Schrauder, Manager - Nuclear Licensing, at-(419) 249-2366.

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.Very truly yours, PWS/mmb o g,g enclosure

-cci P. M. Byron, DB-1 NRC-Senior Resident Inspector:

A. B. Davis, Regional Administrator, NRC' Region III H. D.-Lynch, DB-1 NRC' Senior Project-' Manager Utility Radiological Safety Board

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