ML20196D192

Application for Amend to License DPR-63,revising Bases for TSs 2.1.1, Fuel Cladding - Safety Limit, 3.2.5 & 4.2.5, RCS Leakage Rate to Incorporate Design Changes Affecting Reactor Fuel & Drywell Leak Detection Sys

ML20196D192
Person / Time
Site:	Nine Mile Point
Issue date:	11/24/1998
From:	Mueller J NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20196D198	List: ML20196D192 ML20196D208
References
NMP1L-1385, NUDOCS 9812020172
Download: ML20196D192 (3)

Text

A Niagara hMohawk' John H. Mueller Phone: 315.349.7907 Senior Vice President and Fax: 315.349.1321 Chief Nucloat Officer e-mad: muene@nimo.com November 24, 1998 NMPIL 1385 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE: Nine Mile Point Unit 1 Docket No. 50-220 DPR-63 Gentlemen:

Niagara Mohawk Power Corporation (NMPC) is revising the Bases for Nine Mile Point Unit 1 (NMP1) Technical Specifications. This revision updates the " Bases for 2.1.1 Fuel Cladding - Safety Limit" and the " Bases for 3.2.5 and 4.2.5 Reactor Coolant System Leakage Rate" to incorporate design changes affecting the reactor fuel, the reactor vessel water level instrumentation, and the drywell leak dotection system. Moreover, the core spray system flow parameters contained in the " Bases for 3.3.1 and 4.3.1 Oxygen Concentration" are being updated to reflect the results of the most recent analyses. Minor editorial changes, including typographical corrections, are also included in the changes to ,/

the " Bases for 3.2.5 and 4.2.5 Reactor Coolant System Leakage Rate" and the " Bases for 3.3.1 and 4.3.1 Oxygen Concentration." ,

Attachment A to this letter contains the revised Technical Specification Bases pages.

NMPC requests that the NRC Staff review the Bases changes and then issue the revised Bases in the form attached hereto as Attachment A.

Attachment B provides supporting information, including the reasons for the changes,

/ /b descriptions of the changes, and summaries of the evaluations which justified the changes.

Very truly yours, d/h L John H. Mueller Senior Vice President and Chief Nuclear Officer

,,r JHM/CDM/ kap I

Attachments n

9812020172 91124 0 PDR ADOCK 0500 p -

Nme Mde Point Nuclear Station P0. Box 63 Lycoming. New York 13093-0063

Page.2 .

xc: Mr. H. J. Miller, NRC Regional Administrator, Region i Mr. S. S. Bajwa, Director, Project Directorate,1-1, NRR Mr. G. K. Hunegs, Senior Resident inspector Mr. D. S. Hood, Senior Project Manager, NRR Mr. J. P. Spath NYSERDA 286 Washington Avenue Ext.

Albany, NY 12203-6399 Records Management I

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.  :. l ATTACHMENT A NIAGARA MOHAWK POWER CORPORATION LICENSE NO. DPR-63 DOCKET NO. 50 220 l

Channes to the Technical Specification Bases 1

l Replace the existing pages 16,103,104, and 126 with the attached corresponding revised

, pages. The revised replacement pages have been retyped in their entirety, incorporating the changes, and include marginal markings (revision bars) to indicate the changes.

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