ML20133G640

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Forwards Proposed Schedule for Validation Completion & Use of Cecor Re Core Reload Methodology on ERF Computer.Nrc to Be Notified When Validation of mini-CECOR/BASSS Sys Complete
ML20133G640
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 10/04/1985
From: Andrews R
OMAHA PUBLIC POWER DISTRICT
To: Butcher E
Office of Nuclear Reactor Regulation
References
LIC-85-436, TAC-59869, NUDOCS 8510160062
Download: ML20133G640 (2)


Text

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Omaha Public Power District 1623 Harney Ornaha. Nebraska 68102 402/536 4000 October 4, 1985 LIC-85-436 Mr. Edward J. Butcher, Acting Chief Operating Reactors Branch No. 3 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D. C. 20555

Reference:

Docket No. 50-285

Dear Mr. Butcher:

Schedule for CECOR Program Validation The Omaha Public Power District submitted core reload methodology changes in June, 1985. These changes proposed the use of mini-CECOR to provide monitoring of the DNB LC0 through the use of the Incore Detector System.

The version of CECOR used for this function will reside on the ERF computer at Fort Calhoun Station Unit No.1. The NRC issued an SER on these method-ology changes on August 26, 1985.

The August 26, 1985 SER requested that the version of CECOR running on the mainframe computer and the version that will run on the minicomputer yield identical results. This validation process will ensure that the uncertain-ties normally associated with CECOR are still acceptable.

Attached is the proposed schedule for the completion of the validation of the use of CECOR on the ERF computer. The validation by November 15 and NRC notification by December 1,1985 allow for completion of this work prior to the restart of Fort Calhoun Station Unit No.1. The mini-CECOR/

BASSS system will not be utilized until validation is completed and the NRC has been notified.

Sincerely, R. L. Andrews Division Manager Nuclear Production RLA/DJM/rs Attachment 8510160062 851004 PDR ADOCK 05000285 cc: LeBoeuf, Lamb, Leiby & MacRae P PDR 1333 New Hampshire Avenue, N.W. '

Washington, D. C. 20036 Mr. E. G. Tourigny, NRC Project Manager Mr. L. A. Yandell, NRC Senior Resident Inspection 1 4sse4 l Empioumengyngagigopponunny

t ATTACHf1ENT Proposed Schedule for Conversion of CECOR From a Ibinframe Computer to the OPPD ERF Computer Completion Date Activi ty Completed Conversion of CECOR from CDC Mainframe to Prime Mini-Computer Completed Validation on the Prime of identical results with the Main-frame version of CECOR flovember 1, 1985 Installation of new operating system on the ERF Computer System at Fort Calhoun November 8, 1985 Load the flini-Computer version of CECOR on the ERF Computer System at Fort Calhoun November 15, 1985 Validation on the ERF Computer System of identical results with the Prime and Mainframe versions December 1,1985 NRC notification of results of the CECOR validation analysis v

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