ML20202C906

Forwards Addl Info Re Util 971031 Application for Amend to License NPF-69,supporting Installtion of Nuclear Measurement Analysis & Control Power Range Neutron Monitor Sys,Per NRC 971216 Request

ML20202C906
Person / Time
Site:	Nine Mile Point
Issue date:	02/03/1998
From:	Mueller J NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP2L-1754, NUDOCS 9802130071
Download: ML20202C906 (3)

Text

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NIAGARA MOHAWK

[G E N E R ATIO N " O Pometnamm4xt mao, p.o. iox 83, tycouino, ucw yong 33ain BUSINESS GROUP February 3,1998 NMP2L 1754 l

U. S. Nuclev Regulatory Commission Attn:' Document Control Desk

. Washington, DC 20555 l

RE: Nine Mile Point Unit 2 Docket No. 50-410 NPF-69

Subject:

Applicationfor Amendment to Nine Mile Point Unit 2 Ops:n:ing License, Requestfor Additionalh tfonnation Gentlemen:

On October 31,1997, Niagara Mohawk Power Corporation submitted an Application for Amendment to the Nine Mile Point Unit 2 (NMP2) Operating License. That application proposed changes to the NMP2 Technin! Specifications to support the installation of the Nuclear Measurement Analysis and Control (NUMAC) Power Range Neutron Monitor

. (PRNM) System. On December 16,1997, the NRC issued a Request for Additional Information concerning our Application for Amendment. The attachment to this letter

- provides the requested information.

Sincerely, 2

4

-h ohn H. Mueller i Chief Nuclear Officer Cf fg g 3 JHM/JMT/Imc t Attachment N^"

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- xc:, Mr. H. J. Miller, Regional Administrator, Regica I Mr. A. W. Dromerick, Acting Director, Project Directorate I-1, NRR

Mr. B.- S; Norris, Senior Resident Inspector Mr. D. S. Hood, Senior Project Manager, NRR

> Mr. J. P. Spath -

- NYSERDA 3286. Washington Avenue Ext Albany, NY 12203-6399 Records Management

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, - 1 Indicate the specific period for opcrating the OPRM before activating the'OPRM functi6n and

l. implementing the_OPRM technical specification changes. For example, NEDC-32410P-A-l allows one fuel cycle for testing the OPRM functions before implementing amended OPRM : -

Ltechnical specificatibns.'

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Response _

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' As indicated in our letter dated March 5,1996, Niagara Mohawk will install the NUMAC .

PRNM modification in RFO6 (Spring 1998) and activate the Oscillation Power Range Monitor , i 1(OPRM) trip function in RFO7 (i.e.~, one cycle for monitoring).

Request 2 j Provide thE following desigri basis environmental conditions for NMP2: -  ;

s ,

iNMP2 ' NUMAC-PRNMS Temperature - '

'24*C to 32*C (reported) 5'C to 50*C .

(75'F nominal to 90*F) (41*F to 122*F), ,

Design Basis: 7 Humidity-- 20% to 50% RH (reported): '

_10% to 90% RH ,

Design Basis: 7- (noncondensing):  ;

Pressurei 14.7 psia (acceptable)?

^

'13 psia'to'16 psia j '

Radiation - <0.2 mRe'm/hr dose rate? 1E-4 Gy (Carbon)/hr dose rate'

, . (reported)' . _

IE+2 Gy (Carbon) TID :

- 7_0 Rem TID (reported) -

p! Design Basis:-?

- Note: 1The radiation limits should be expressed in rads /hr or Grays /hr dose rate, and total sintegrated dose in rads or Grays, instead of units of rem /hr and rem TID.

- Response

- iThe design basis environmental conditions for the NMP2 control room are as follows:

W l Temperature: 70*F to 90*F LHu_midity: 20% - 50% relative humidity

Pressure: A positive pressure of approximately 1/8 inch WG relative to atmosphere f iRadiation: - <.2 mrads/hr dose rate.

70 rads TID Y -e-