ML20062N624
| ML20062N624 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear, Waterford  |
| Issue date: | 01/07/1994 |
| From: | Titus F ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19311B343 | List: |
| References | |
| CNRO-93-0037, CNRO-93-37, NUDOCS 9401180072 | |
| Download: ML20062N624 (5) | |
Text
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e W ENTERGY
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wun w mwn Ti{O1({dlO70 Fred W. Titus w +.-
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i January 7,1994 U.S. Nuclear Regulatory Commission Mail Station PI-137 Washington, D.C. 20555 Attention:
Document Control Desk i
SUBJECT:
Request For Review of Entergy Proprietary Topical Report " Qualification of Reactor Physics Methods for the Pressurized Water Reactors of the Entergy l
System," (ENEAD-01-P, Revision 0)
Arkansas Nuclear One Units 1 & 2 Docket Nos. 50-313 & 50-368 r
i License Nos. DPR-51 & NTF-6 Waterford 3 Steam Electric Station i
Docket No. 50-382 License No. NPF-38 t
CNRO-93/0037 1
t Gentlemen:
Entergy Operations is submitting by this letter for your review and approval the enclosed topical report. This report describes the rnethodology used at Entergy Operations to determine the uncertainties and the resultant " reliability factors" associated with the CASMO/ SIMULATE reactor physics models. The results contained in this document were derived from extensive benchmarking efrorts performed by Entergy Operations personnel on the three Entergy pressurized water reactors: Arkansas Nuclear One - Unit 1 (ANO-1), Arkansas Nuclear One -
Unit 2 (ANO-2), and the Waterford Steam Electric Station - Unit 3 (WSES-3)
CASMO is a multigroup two-dimensional transpon theory code for burnup calculations on BWR and PWR fuel assemblies. SIMULATE is an advanced two-group nodal code that uses inputs 3
derived from CASMO to model PWR and BWR core behavior. Engineering currently uses the codes for work on all four Entergy Operations units, but not in applications requiring NRC review / approval.
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Request For Review of Proprietary Topical Report ENEAD-01-P, Revision 0 JanuaIy 7,1994 CNRO-93/0037 i
Page 2 of 3
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Entergy Operations now proposes to use these codes to generate input to core monitoring codes used at ANO-1, ANO-2 and WSES-3. These codes would also be used to provide operations with reactivity balance data and predictions of physics parameters for all PWR sites.
The benefits from using the new codes are to allow the use of the same codes for all Entergy.
Operations' reactor units, to increase the ability to model more advanced core designs, and to reduce the uncertainties of calculated physics paramettrs.
i The CASMO and SLMULATE codes themselves have been approved by the NRC for use at least l
one other utility. In order to qualify these codes for work affecting core operating limits, reload physics, and/or the reload safety analysis of Entergy Operations PWRs, Entergy Operations is submitting this application specific topical report for your review.
s This report is considered proprietar', aiid is being submitted pursuant to 10CFR2.790.
l is an afEdavit documenting the basis for this proprietary submittal. Entergy Operations requests your review and approval of the attached topical report for use at ANO-1, ANO-2, and WSES-3. In order to meet our refueling schedules, we request your approval by.
October 31,1995.
Sincerely, j
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/9A FWT/JKW/bt attachment cc:
(See Next Page) i i
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, 4 Request For Review'of Pr'oprietary Topical Report ENEAD-01-P, Revision 0 l
January 7,1994 CNRO-93/0037 Page 3 of 3 cc: (w/o encl.)
Mr. T. W. Alexion Mr. R. P. Barkhurst 1
Mr. R. II. Bernhard
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Mr. R. B. Bevan, Jr.
l Mr. J. L. Blount
. Mr. L. J. Callan Mr. J. L. Colvin Mr. J. G. Dewcase Mr. S. D. Ebneter Mr. E. J. Ford Mr. C. R. Hutchinson Mr. H. W. Keiser Mr. R. B. McGehee Mr. P. W. O'Connor Mr. N. S. Reynolds Ms L. J. Smith Mr. D. L. Wigginton Mr. J. W. Yelverton Central File (GGNS)
DCC (ANO)
Records Center (WF-3)
Corporate File [6]
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Entergy Operations Inc., Proprietary Topical Report ENEAD-01-P, Revision 0 CNRO-93/0037 Page1of2
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A FFIDA VITPURSUANT TO 10 CFR 2. 790 Entergy Operations, Inc.
State ofMississippi County of Hinds '
I, Fred W. Titus
, depose and say that I am the vice n esident. Engineering of Entergy Operations, Incorporated, (hereafter called "Entergy") and duly authorized to make this aflidavit, and have reviewed or caused to have reviewed the information which is identified as proprietary and referenced in the paragraph immediately below. I am submitting this affidavit in conformance with the provisions of 10 CFR 2.790 of the Commission's regulations for withholding this information.
The information for which proprietary treatment is sought is contained in the following document:
l ENEAD-01-P, " Qualification of Reactor Physics Methods for the Pressurized Water Reactors of the Entergy System", December 23,1993.
This document has been appropriately designated as proprietary.
I have personal knowledge of the criteria and procedures utilized by Entergy in j
designating information as e t.ade secret, or as confidential commercial or financial information.
i The following is furnished, per Section 2.790 paragraph (b) (4) of the Commission's regulations, for consideration by the Commission in determining whether the informatior l
sought to be withheld from public disclosure should be withheld:
l 1.The information sought to be withheld in this submittal is that which is appropriately j
marked by vertical lines in the aforementioned report. This document is being submitted i
as a Topical Report and will be referenced in future licensing applications regarding the Entergy pressurized water reactors.
'i 2 - The information considered proprietary consists of extensive measured data, computer simulations, specific computer algorithms, and statistical analyses which were used to f
I justify the use of the overall methodology.
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m Entergy Operations Inc., Proprietary Topical Report ENEAD-01-P, Revision 0 CNRO-93/0037 i
i Page 2 of 2 3 - Release of the information which is sought to be withheld proprietary might result in the loss of existing or potential competitive advantages. This type ofinformation includes the following:
a - Information which reveals the distinguishing aspects of a program, methodology, algorithm, or procedure. Prevention of their use without license would provide a competitive advantage over other organizations.
b - Supporting and test data which aids in the validation of methodologies and thereby provides a competitive advantage such as reduced computer cases or credibility.
c - Information which is not the property of Entergy but must be trec.ted as such according to agreements with the owner (specifically, ABB-CE).
d - Information which could reduce the expenditure of resources of a competitor of either Entergy or ABB-CE.
4 - The information is being transmitted to the commission in confidence under the provisions of 10 CFR 2.790 with the understanding that it is to be received in conEdence by the Commission.
5 - Development of this information be Entergy required several thousand of man-hours and several hundred thousands ofdollars. A competitor would have to undergo similar expense.
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