ML071550131

SER Compliance with WCAP-16260-P-A the Spatially Corrected Inverse Count Rate (Scicr) Method for Subcritical Reactivity Measurement

ML071550131
Person / Time
Site:	Diablo Canyon
Issue date:	05/23/2007
From:	Gresham J A Westinghouse
To:	Document Control Desk, NRC/NRR/ADRO
References
AW-07-2286, LTR-NRC-07-28, WCAP-16260-P-A
Download: ML071550131 (10)

Text

OWestinghouse WWestinghouse Electric Company Nuclear Services P.O. Box 355 Pittsburgh, Pennsylvania 15230-0355 USA U.S. Nuclear Regulatory Commission Direct tel: (412) 374-4643 Document Control Desk Direct fax: (412) 374-4011 Washington, DC 20555-0001 e-mail: greshaja@westinghouse.com Our ref: LTR-NRC-07-28 May 23, 2007

Subject:

SER Compliance with WCAP-16260-P-A "The Spatially Corrected Inverse Count Rate (SCICR)Method for Subcritical Reactivity Measurement" (Proprietary/Non-Proprietary)

Enclosed are copies of the Proprietary/Non-Proprietary SER Compliance with WCAP- 16260-P-A "The Spatially Corrected Inverse Count Rate (SCICR) Method for Subcritical Reactivity Measurement." Per SER Limitations and Conditions documented in the NRC's SER for WCAP-16260, Limitation and Condition

1. 2 specifies the following:

"2. Reactivity-sensitivity analyses must be conducted and submitted to the NRC staff for review/audit on a plant-specific basis to predetermine the masking effect (biases) so that they can be accounted for in SCICR applications to the plant." The first application of this methodology for Diablo Canyon Unit 1 is planned for Cycle 15. Enclosed are the reactivity-sensitivity analyses to determine the plant-specific masking effect for Diablo Canyon Unit 1 discussed in the enclosure.

Also enclosed is: 1. One (1) copy of the Application for Withholding, AW-07-2286 (Non-Proprietary) with Proprietary Information Notice.2. One (1) copy of Affidavit (Non-Proprietary).

This submittal contains proprietary information of Westinghouse Electric Company LLC. In conformance with the requirements of 10 CFR Section 2.390, as amended, of the Commission's regulations, we are enclosing with this submittal an Application for Withholding from Public Disclosure and an affidavit.

The affidavit sets forth the basis on which the information identified as proprietary may be withheld from public disclosure by the Commission.

Correspondence with respect to this affidavit or Application for Withholding should reference AW-07-2286 and should be addressed to J. A. Gresham, Manager, Regulatory Compliance and Plant Licensing, Westinghouse Electric Company LLC, P.O. Box 355, Pittsburgh, Pennsylvania 15230-0355.

f ey rly rs, 1 J.A. Gresham, Manager Regulatory Compliance and Plant Licensing Enclosures cc: A. Mendiola, NRR A. Attard, NRR J. Thompson, NRR H. Cruz, NRR L. M. Feizollahi, NRR Pacific Gas & Electric c/o Diablo Canyon Unit 1 i W estinghouse Westinghouse Electric Company Nuclear Services P.O. Box 35 5 Pittsburgh, Pennsylvania 15230-0355 USA U.S. Nuclear Regulatory Commission Direct tel: 412/374-4643 ATTN: Document Control Desk Direct fax: 412/374-4011 Washington, DC 20555 e-mail: greshaja@westinghouse.com Our ref: AW-07-2286 May 23, 2007 APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE

Subject:

LTR-NRC-07-28 P-Attachment, SER Compliance with WCAP-l 6260-P-A "The Spatially Corrected Inverse Count Rate (SCICR) Method for Subcritical Reactivity Measurement" (Proprietary)

The application for withholding is submitted by Westinghouse Electric Company LLC (Westinghouse) pursuant to the provisions of paragraph (b)(1) of Section 2.390 of the Commission's regulations.

It contains commercial strategic information proprietary to Westinghouse and customarily held in confidence.

The proprietary material for which withholding is being requested is identified in the proprietary version of the subject report. In conformance with 10 CFR Section 2.390, Affidavit AW-07-2286 accompanies this application for withholding, setting forth the basis on which the identified proprietary information may be withheld from public disclosure.

Accordingly, it is respectfully requested that the subject information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.390 of the Commission's regulations.

Correspondence with respect to this application for withholding or the accompanying affidavit should reference AW-07-2286 and should be addressed to J. A. Gresham, Manager of Regulatory Compliance and Plant Licensing, Westinghouse Electric Company LLC, P. 0. Box 355, Pittsburgh, Pennsylvania 15230-0355.

'Manager Regulatory Compliance and Plant Licensing cc: A. Mendiola, NRR A. Attard, NRR J. Thompson, NRR H. Cruz, NRR L. M. Feizollahi, NRR Pacific Gas & Electric c/o Diablo Canyon Unit 1 AW-07-2286 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:

ss COUNTY OF ALLEGHENY:

Before me, the undersigned authority, personally appeared J. A. Gresham, who, being by me duly sworn according to law, deposes and says that he is authorized to execute this Affidavit on behalf of Westinghouse Electric Company LLC (Westinghouse) and that the averments of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief: JJ. A. Gresham, Manager Regulatory Compliance and Plant Licensing Sworn to and subscribed before me this 4 day of ,2007 Notary Public COMMONWEALTH OF PENNSYLVANIA Notarial Seal Sharon L. Marlde, Notary Public Monroeville Boro, Allegheny County My Commission Expires Jan. 29,2011 Member, Pennsylvania Association of Notaries 2 AW-07-2286 (1) 1 am Manager, Regulatory Compliance and Plant Licensing, in Nuclear Services, Westinghouse Electric Company LLC (Westinghouse) and as such, I have been specifically delegated the function of reviewing the proprietary information sought to be withheld from public disclosure in connection with nuclear power plant licensing and rulemaking proceedings, and am authorized to apply for its withholding on behalf of Westinghouse.

(2) 1 am making this Affidavit in conformance with the provisions of 10 CFR Section 2.390 of the Commission's regulations and in conjunction with the Westinghouse "Application for Withholding" accompanying this Affidavit.

(3) I have personal knowledge of the criteria and procedures utilized by Westinghouse in designating information as a trade secret, privileged or as confidential commercial or financial information.

(4) Pursuant to the provisions of paragraph (b)(4) of Section 2.390 of the Commission's regulations, the following is furnished for consideration by the Commission in determining whether the information sought to be withheld from public disclosure should be withheld.(i) The information sought to be withheld from public disclosure is owned and has been held in confidence by Westinghouse.(ii) The information is of a type customarily held in confidence by Westinghouse and not customarily disclosed to the public. Westinghouse has a rational basis for determining the types of information customarily held in confidence by it and, in that connection, utilizes a system to determine when and whether to hold certain types of information in confidence.

The application of that system and the substance of that system constitutes Westinghouse policy and provides the rational basis required.Under that system, information is held in confidence if it falls in one or more of several types, the release of which might result in the loss of an existing or potential competitive advantage, as follows: (a) The information reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) where prevention of its use by any of Westinghouse's competitors without license from Westinghouse constitutes a competitive economic advantage over other companies.(b) It consists of supporting data, including test data, relative to a process (or component, structure, tool, method, etc.), the application of which data secures a competitive economic advantage, e.g., by optimization or improved marketability.(c) Its use by a competitor would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing a similar product.

3 AW-07-2286 (d) It reveals cost or price information, production capacities, budget levels, or commercial strategies of Westinghouse, its customers or suppliers.(e) It reveals aspects of past, present, or future Westinghouse or customer funded development plans and programs of potential commercial value to Westinghouse.(f) It contains patentable ideas, for which patent protection may be desirable.

There are sound policy reasons behind the Westinghouse system which include the following: (a) The use of such information by Westinghouse gives Westinghouse a competitive advantage over its competitors.

It is, therefore, withheld from disclosure to protect the Westinghouse competitive position.b) It is information which is marketable in many ways. The extent to which such information is available to competitors diminishes the Westinghouse ability to sell products and services involving the use of the information.

c) Use by our competitor would put Westinghouse at a competitive disadvantage by reducing his expenditure of resources at our expense.(d) Each component of proprietary information pertinent to a particular competitive advantage is potentially as valuable as the total competitive advantage.

If competitors acquire components of proprietary information, any one component may be the key to the entire puzzle, thereby depriving Westinghouse of a competitive advantage.(e) Unrestricted disclosure would jeopardize the position of prominence of Westinghouse in the world market, and thereby give a market advantage to the competition of those countries.(f) The Westinghouse capacity to invest corporate assets in research and development depends upon the success in obtaining and maintaining a competitive advantage.(iii) The information is being transmitted to the Commission in confidence and, under the provisions of 10 CFR Section 2.390, it is to be received in confidence by the Commission.(iv) The information sought to be protected is not available in public sources or available information has not been previously employed in the same original manner or method to the best of our knowledge and belief.

4 AW-07-2286 (v) The proprietary information sought to be withheld in this submittal is that which is appropriately marked in LTR-NRC-07-28 P-Attachment, SER Compliance with WCAP-16260-P-A "The Spatially Corrected Inverse Count Rate (SCICR) Method for Subcritical Reactivity Measurement," (Proprietary), for submittal to the Commission, being transmitted by Westinghouse letter (LTR- NRC-07-28) and Application for Withholding Proprietary Information from Public Disclosure, to the Document Control Desk. The proprietary information as submitted by Westinghouse Electric Company is for NRC review/audit.

This information is part of that which will enable Westinghouse to: (a) Demonstrate the applicability of the SC]CR Methodology for a specific plant.(b) Assist customers in implementing an improved measurement technique.

Further this information has substantial commercial value as follows: (a) Westinghouse can use this methodology to further enhance their licensing position over their competitors.(b) Assist customers to obtain license changes.Public disclosure of this proprietary information is likely to cause substantial harm to the competitive position of Westinghouse because it would enhance the ability of competitors to provide similar methodology and licensing defense services for commercial power reactors without commensurate expenses.

Also, public disclosure of the information would enable others to use the information to meet NRC requirements for licensing documentation without purchasing the right to use the information.

The development of the technology described in part by the information is the result of applying the results of many years of experience in an intensive Westinghouse effort and the expenditure of a considerable sum of money.In order for competitors of Westinghouse to duplicate this information, similar technical programs would have to be performed and a significant manpower effort, having the requisite talent and experience, would have to be expended for developing the enclosed improved core thermal performance methodology.

Further the deponent sayeth not.

PROPRIETARY INFORMATION NOTICE Transmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the NRC in connection with requests for generic and/or plant-specific review and approval.In order to conform to the requirements of 10 CFR 2.390 of the Commission's regulations concerning the protection of proprietary information so submitted to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted).

The justification for claiming the information so designated as proprietary is indicated in both versions by means of lower case letters (a) through (f) located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information.

These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this transmittal pursuant to 10 CFR 2.390(b)(1).

COPYRIGHT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.390 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection notwithstanding.

With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, DC and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.

Westinghtus.e Non-Proprietary Class 3 LTR-NRC-07-:28NP-Attachment SER Compliance with WCAP-16260-P-A"The Spatially Corrected Inverse Count-Rate (SCICR)Method for Subcritical Reactivity Measurement" (Non-Proprietary)

Westinghouse Electric Company P.O: Box 355 Pittsburgh, Pennsylvania 15230-0355

© 2007 Westinghouse Electric Company-LLC AlI.Rights Reserved Page 1 of 3 WestinghoUse Non-Proprietary Class 3 Reactivity-Sensitivity Analyses ofSCICR Applicati6n attDiablo Canyon Unit 1 The first application of the spatially corrected inverse-counrtrate (SCICR) method for subcritical reactivity, measurement is planned for Diablo Canyon Unit 1. This method of reactivity measurement is described in the approved Westinghouse Topical Report (TR) WCAP-,16260-P-A.

The final safety evaluation performed by the NRC staff (TAC No. MC3,065) included the condition that reactidvity-sensitivity analyses must be conducted and submitted to the NRC' staff for review/auditon a plant-specific, basis to predetermine any masking effect(biases) in the SC!CR applications at each plant. Note that Unit ahas a different control rod pattern than Unit 2, which has had complete reactivity-sensitivity analyses previously provided to the NRC slif., The sensitivity calculations.

were performed

in the, sa -me manner as described in Section 5.3 of WCAP- l6260-P-A.

The results of the core reactivity, bias and control rod constant bias cases are presented below. These are equivalent t: Tables 5-2 and 5-4 of WcAP-i6260-PA.

Diablo Canyon Unit 1 Quality of the SCICR Line Fit in the Simulated Cases With Core Reactivity and Control Rod Constants Biases.(RMS =Root Mean Squared, pem 10 -.5) a, c Two types of reactivity-sensitivity conditions Were performnedfor Diablo Canyon Unit 1 (Section .5.3 of the original Westinghouse WCAP- 16260-P submittal).

As required :in, the SER, .this is -consistent with all initial plant SCICR applications subsequent.

to the review and approval of WCAP-16260[P."I C , LTR-NRC-07-28 NP-Attachm ent Page.2 of 3 Westinghouse Non-Proprietary Class 3 I In understanding the] ~ is the same as other recent SCICR applications

[H, C, again confirming that. these plants also exhibited Mean,/RMS values [ ] ' in their reactivity-sensitivity analyses for first SCICR application.

["I C.C C will be used for SCICR applications at Diablo Canyon Unit, 1 as the threshold for review of a potential reactivity bias. Like the database of plants provided %in: WCAP-16260-P, a, c.LTR-NRC-07-28 NP-Attachment Page 3 of 3