ML20106E324

Forwards Rev 5 to Millstone Unit 2 Cycle 12 COLR, Incorporating Listed Changes

ML20106E324
Person / Time
Site:	Millstone
Issue date:	10/30/1992
From:	Scace S NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20106E327	List: ML20106E324 ML20106E331
References
MP-92-1175, NUDOCS 9211060335
Download: ML20106E324 (2)

Text

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Decket No. 50-336 odol>er 30, 1992

} MP-9?-1175 U.S Nuclear Regulatory Comm.ission L Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:

Millstone Nuclear Power Station, Unh No. 2 I

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Core Ontating_ Limits Repmt._Relision 5 g x

- The Millstone Unit No 2 Core Operating Limits Report (COLR) has been revised to incorporaie the following changes for Cycle 12 operation:

(a) TOTAL. UNRODDED INTEGRATED RADIAL PEAKING FACTOR - Fir is now a DEFINED TERM in the Millstone Unit No. 2 Technical Specifications, and

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L therefore appears in the capitalized type throughout the COLR.

E (b)The tow tiered reactor coolant flow rate requirements for the lineat ., rate

- limit have been deleted. The linear heat rate limit for Cycle 1.' operation is less than or equal to 15.1 kw/ft.

7 (c) The flus peaking augmentation f actors have been changed from a core height dependent salue to a single vah . and the associated Figure 2.5-2 has been deleted. The single value used for the flux peaking augmentation factor is

- - 1955, which corresponds to the highest value from the deleted Figure 2.5-2.

_ (d)The TOTAL UNRODDED INTEGRATED RADIAL PEAKING FACTOR - Fif limit has been increased te 1,69 from 144, und the associated power dependent '

F/r limits shown on Ficure 2.6-1 were also increased. The F/r limit increase is made poseible due to the increesed reactor c ocla.it flow from the replacement steam gern ators, and by restricting the limits for the Local Power Density Limiting hicty System Setting anel Limiting Condition for. Operation, (e) The reactor coolant flow iate limit for DNB Margin has been increased from 25,000 gpm to 360,000 gpm to take advantage of the increased reactor coolant flow from the replacement steam generators.

(f) Figure 2A-), CEA Inse-tion Limit vs, THERMAL POWER with Four Reactor Coolant Pumps Operating, has been changed to restore it back to the original

" stretch pow er" !imits.

'D Figure 2.5-1, AXIAL SHAPE INDEX v{ PERCENT OF ALLOWABLE POWER EVEL, has been changed to reflect the Cycle 12 Safety Analysis assumptions a relation to the F/ limits. '

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.2 In accordance with the hlillstone Unit No. 2 Technical Specifications, Section 6.9.1.7.0, NNECo hereby submits Revision 5 to the blillstone Unit No. 2 COLR.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY

/jdyb ^ } .u<,

/ Stepi..n E Scace bee President hiillstone Nuclear Power Station

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cc: T.T. h1artin, Region i Administrater -

G.S. Vissing, NRC Project hianager, blillstone Unit No. 2 D. A. Dempsey, Resident inspector, blillstone Unit No. 2 P.D. Swetland. Senior Resident inspector, 'dillstone Unit Nos.1, 2 and 3 ,

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