ML20138P372

Application for Amend to License NPF-43,revising Tech Specs to Lower Source Range Monitor Rod Block Trip Setpoint to 0.3 Counts Per Minute.Fee Paid

ML20138P372
Person / Time
Site:	Fermi
Issue date:	12/23/1985
From:	Jens W DETROIT EDISON CO.
To:	Adensam E Office of Nuclear Reactor Regulation
Shared Package
ML20138P373	List: ML20138P372 ML20138P376
References
VP-85-0236, VP-85-236, NUDOCS 8512260077
Download: ML20138P372 (3)

Text

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Wayne H,'Jena j <

. V2s Przaident ' ,

' Nuclear Operations' g ' rermi-2 ,' .

December 23, 1985

. Newport, Michigan 48166 -

I n ' 6400 North Dixie Highway (313) 586 4150 VP-8540236

' Director'of1 Nuclear Reactor-Regulation EMas.E. G. Adensam, Chief ~

' Licensing Branch lNo.-l

' Division _of1 Licensing U. S.-Nuclear. Regulatory. Commission Washington, D.~C. 20555

Reference:

Fermi 2

. NRC Docket No. 50-341 NRC License No. NPF-43

Subject:

Request for Amendment to Fermi 2 Technical Specifications-Regarding the Source Range Monitor Downscale Rod Block Setpoint

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In accordance.with 10CFR 50.91 and 10CFR'50.92, Detroit Edison hereby requests an amendment tx) the Fermi 2 Technical Specifications to lower: the Source Range Monitor (SRM) ' rod i

Lblock trip;setpoint count rate f rom 0.'7 counts: per second

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(cps-) -tx) 0.3 'cysn until the first core has-been irradiated to 2000 MWD /T.

-Based on~ the current SRM count -rate, _ Detroit Edison estimatesothat the antimony-beryllium source strength may'be insuf ficient .tx) maintain 0.7 cps after February 15, 1986, due to normal decay offthe sources; .These sources-will be

. reliably regenerated'during operations at reactor' power 3- levels 71n excess of 25%. Currently, Detroit Edison expects-power operations-to! resume before the source strength decays-below the 0.7 cps' count rate. -However, recognizing that unforeseen delays"could' occur, we are requesting this-

' Technical Specification change now in order to allow for

timely processing of the NRC staff.

F This' proposed l change would affect the following technical

' specifications:

/4'.'3.6 Instrumentation / Control Rod Block Instrumentation

< Table 3.3.6-2 referenced by-this specification requires a p .SRM'downscale' trip set point of 0.7 cps'for the control rod olock function.to be considered operable. A statement would be added allowing a setpoint of 0.3 cps prior to achieving a

burnup in excess of 2000 MWD /T on the first core as per the

. attached markup.

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I 90 8512260077 851223 E

-PDR ADOCK 05000341

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E.-G. A'densam December 23, 1985

~VP-85-0236 -

Page.2.

3/4i3'.7.6-Instrumentation / Source Range Monitors The surveillance requirements of 4.3.7.6.c require that sprior_to withdrawalLof control ~ rods, the Source Range-Monitor count rate-be verified to be at least 0.7 cps with

the detector. fully inserted. A statement would be added

.allowingLa value.of 0.'3 cps prior to achieving a burnup in

. excess of 2000 MWD /T on the first core as per the attached markup.

.3/4.9.2 Refueling Operation / Instrumentation

-The' surveillance' requirements of 4.9.2.c require that prior to and during core alterations, the SRM count rate be verified to be at least 0.7 cps. A_ statement would be added allowing _a value of 0.3 cps prior to achieving.a burnup in excess of 2000 MWD /T on the first core as per the attached

-markup.

Detroit Edison has evaluated these proposed changes for significant hazards consideration and.our evaluation is included with this letter as' Attachment I.

Detroit Edison has evaluated this request in accordance with the criteria in 10CFR170.21 and has enclosed an application fee of one hundred fifty dollars.($150.00) as initial payment for this' application for amendment under Facility Category A (Power Reactors).

In accordance. with '10CFR50.91, the State of Michigan has been provided a copy of this letter.

Should you have any questions in this matter, please contact Mr.-A. E. Wegele (313) 586-4210.

Sincerely,

/',

' dHQ Attachments cc: Mr. P. M. Byron Mr. M. David Lynch Supervisor, Advance Planning and Review Section Michigan-Public Service Commission USNRC Document Control Desk Washington, D.C. 20555

E. G. Adensam December 23, 1985 VP-85-0236-Page 3

'I, WAYNE-H. JENS, do hereby affirm that the foregoing statements are based'on facts and circumstances which are true and accurate to the best of.my. knowledge and belief.

W WAYNE 10, JENS (

4e Vice Presidentb Nuclear Operations On this 23 day of , 1985, before me' personally appeared Wayne H. Jens, being first duly sworn-and says that he executed the foregoing as his free-act and deed.

Notary Public L .s Notary PuBhc, '.hou.naw County, f11 O My Commission Expires Dcc.28,1937

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