ML20066E376

Verifies Util Commitment to NRC of Prior to Commercial Operation Per NUREG-0519,Section 6.2.1.1.Util Determining Whether Unit 1 Is in Commercial Svc for Accounting Purposes Due to Demonstrated Power Generation

ML20066E376
Person / Time
Site:	LaSalle
Issue date:	11/10/1982
From:	Schroeder C COMMONWEALTH EDISON CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
RTR-NUREG-0519, RTR-NUREG-519 5258N, NUDOCS 8211150139
Download: ML20066E376 (2)

Text

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D Commonwealth Edison C ) One First Nation %I Plaza. Chicago, Illinois g\ O ] Address Reply to: Post Office Box 767

/ Chicago, Illinois 60690 bbvember 10, 1982 Mr. A. Schwencer, Chie f Licensing Branch #2 Division o f Licensing U. S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

LaSalle County Station Unit 1 Clarification o f Comme rcial Operation Definition NRC Docket No . 50-373 Reference (a): NUREG 0519, Section 6.2.1.1.,

Page 6-3 2.

Dear Mr. Schwencer:

In previous discussions with the NRC, Commonwealth Edison has discussed " Commercial Operation" as a specific milestone. In these discussions, "Commerical Operation" was generally understood as a point reached when the initial startup and testing phase of operation has been completed. For a number o f purposes, this is understood as the completion o f the 100 hour0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> 100% warranty run. For utility accounting p u rp oses, a plant is transferred from the construction account to the plant in service account when'the station has been demonstrated to reliably produce electricity. This point is sometimes referred to as the Comme rcial Service , Accounting Service, or Commercial Operation Date. The exact point o f " Commercial Service", as determined pursuant to regulatory accounting rules is not one of the technical progress points of the Startup Test Program, but rather an accounting determination.

Re ference (a) states, in part: "The applicant has committed to perform a comprehensive safety-relief valve in-plant test which is to be completed prior to commercial operation o f the f acility." -The safety-relief valve test program consists of numerous tests at various test levels, some of which have already been completed.

Cu rren tly , Commonwealth Edison Company is preparing to deter-mine whether LaSalle County Station Unit 1 is in Commercial Service for accounting purposes due to its demonstrated reliable generation of electric power. Such a determination is normally made retrospectively, based on an examination of unit operation when the unit has been observed to be sustaining a daily capacity factor in the 20% - 30%

range. The determination has consequences for accounting purposes but does not a f fect the Startup Program.

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8211150139 821110 PDR ADOCK 05000373 P PDR l

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.e A. Schwencer November 10, 1982

. The purpose of this letter is to verify that the NRC staf f understands that Commonwealth Edison Company's commitment to the NRC of " prior to Commercial Operation" was made, and continues to be made on the basis of the non-accounting definition of completion of the 100 hour0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> 100% warranty run, which is the point in time that the Startup Test Program is generally considered complete.

If there are any further questions in this matter, please contact this o f fice.

Enclosed for your use are one (1) signed. original and forty (40) copies of this letter.

Ve ry truly yours,

@lb ,,A,hz C. W. Schroeder Nuclear Licensing Administrator im cc: NRC Resident Inspector - LSCS P. Steptoe , IL&B 5358N i

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