ML20235Q061: Difference between revisions

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| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 1
| page count = 1
| project =  
| project = TAC:72015
| stage = Request
| stage = Request
}}
}}

Latest revision as of 14:10, 20 March 2021

Forwards Application for Amend to License NPF-3,increasing Reactor Protection Sys Response Time Requirements for High Flux/Number of Reactor Coolant Pumps on Trip Function. Change Based on Vipre Code
ML20235Q061
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 02/21/1989
From: Shelton D
TOLEDO EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20235Q063 List:
References
1634, TAC-72015, NUDOCS 8903020480
Download: ML20235Q061 (1)


Text

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  • s TOLEDO

%mm EDISON A Centera Energy Corrpony Docket Number 50-346 DONALD C. SHELTON Mce Pre 9 dent-Nuchar License Number NPF-3 ""

Serial Number 1634 February 21, 1989 United States Nuclear Regulatory Commission Document Control Desk Vashington, D. C. 20555 Subj ec t: License Amendment Application to Increase the Reactor Protection System Response Time. Requirement For the High Flux / Number of Reactor Coolant Pumps On Trip Function (TAC Number 72015)

Gentlemen:

The enclosed application requests that the Davis-Besse Nuclear Power Station, Unit No. 1 Operating License, Appendix A, Technical Specifications be revised to reflect the changes attached. The proposed changes involve Section 3/4.3.1.1, Reactor Protection System Instrumentation, Table 3.3-2, Reactor Protection System Instrumentation Response Times. The request proposes.an increase in the response time requirement for the High Flux / Number of Reactor Coolant Pumps On (power / pumps) trip function of the Reactor Protection System (RPS) provided in Table 3.3-2 from 451 milliseconds to 631 milliseconds. This proposed change is based on an analysis performed with the NRC topically approved computer code named VIPRE. In addition, a proposed change clarifying plant component nomenclature is included.

Toledo Edison requests that this amendment be issued by the NRC by January 2, 1990 for implementation prior to startup from the sixth refueling outas,e.

Very truly yours,

/' WL/V]

GBK/dlm cc: P. M. Byron, DB-1 NRC Resident Inspector A. B. Davis, Regional Administrator, NRC Region III T. V. Vambach, DB-1 NRC Senior Project Manager State of Ohio 8903020480 G90221 # I PDR ADOCK 05000346 #I P PDC 1 I \

THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MAD! SON AVENUE TOLEDO, OHIO 43652

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