ML20141H816

Requests That Proprietary Draft Rept Preliminary Description of Wgothic Eveluation Model, Be Withheld (Ref 10CFR2.790)

ML20141H816
Person / Time
Site:	05200003
Issue date:	05/16/1997
From:	Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Quay T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20141H789	List: ML20141H816 NSD-NRC-97-5136, Forwards Proprietary Draft Rept Preliminary Description of Wgothic Evaluation Model. Encl Withheld (Ref 10CFR2.790). Proprietary Portion of Document Was Sent to Westinghouse
References
AW-97-1109, NUDOCS 9705270131
Download: ML20141H816 (12)

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WeStingh00se Energy Systems Bm 355 Electric Corporation Pinsburgh Pennsylvania 15230-0355 l.

AW-97-1109 l

May 16,1997 l

Document Control Desk U.S. Nuclear Regulatory Commission i

Washington, DC 20555 i

ATTENTION:

MR. T. R. QUAY j

gPLICATION FOR WITHHOLDING PROPRIETARY l

,fNFORMATION FROM PUBLIC DISCLOSURE

SUBJECT:

REQUEST FOR WITilHOLDING INFORMATION FROM PUBLIC DISCLOSURE FOR WESTINGHOUSE AP600 DRAFT REPORT" PRELIMINARY DESCRIPTION OF WGOTHIC EVALUATION MODEL"

Dear Mr. Quay:

The application for withholding is submitted by Westinghouse Electric Corporation (" Westinghouse")

pursuant to the provisions of paragraph (b)(1) of Section 2.790 of the Commission's regulations. It contains commercial strategic information proprietary to Westinghouse and customarily held m i

l confidence.

l The proprietary material for which withholding is being requested is identified in the proprietary version of the subject report. In conformance with 10CFR Section 2.790, Affidavit AW-97-1109 accompanies this application for withholding setting forth the basis on which the identified proprietary information may be withheld from public disclosure.

l Accordingly, it is respectfully requested that the subject information which is proprietary to l

l Westinghouse be withheld from public disclosure in accordance with 10CFR Section 2.790 of the Commission's regulations.

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Correspondence with respect to this application for withholding or the accompanying affidavit should l

reference AW-97-1109 and should be addressed to the undersigned.

Very truly yours, O

s Nicholas J. Li o, Mar ager Equipment Design & Regulatory Engineering jml cc:

Kevin Bohrer, NRC - OWFN MS 12E20 9705270131 970516 ^

PDR ADOCK 05200003 A

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t AW-97-1109 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:

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COUNTY OF ALLEGilENY:

Before me, the undersigned authority, personally appeared Nicholas J. Liparulo, 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 Corporation (" 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:

(

Nicholas J. LiparulM Manager Equipment Design & Regulatory Engineering Sworn to and subscribed before me this /6Aday of

,1997 u

Notarial Seal Janet A. Senwab, Notary P Me Monroevme Boro, Alleg ny County My Commission Expires ay 22.20N l MemDer, PennsyNania Associabon of Notaa -_

Notary Public 3205A DOC

AW-97-1109 (1)

I am Manager, Equipment Design & Regulatory Engineering, in the Nuclear Services Division, of the Westinghouse Electric Corporation 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 withhold.

%f the Westinghouse Energy Systems Business Unit.

(2)

I am making this Affidavit in conformance with the provisions of 10CFR Section 2.790 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 the Westinghouse Energy Systems Business Unit 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 2.790 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 ofinformation customarily held in confidence by it and, in that connection, uti!izes 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.

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AW-97-1109 J

Under that system, information is held in confidence ifit 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:

i (a)

The infonnation reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) where prevention of its use by any of Westingnouse'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 improvd@

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.

(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:

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AW-97-1096 (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

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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 wouldjeopardize the position of prominence of Westinghouse in the world market, and thereby give a market advantage to the competition of those countries.

1 (f)

The Westinghouse capacity to invest corporate assets in research and development depends upon the success in obtaining and maintaining a competitive advantage.

l (iii)

The information is being transmitted to the Commission in confidence and, under the provisions of 10CFR Section 2.790, it is to be received in confidence by the Commission.

(iv)

%e information sought to be protected is not available in public sources or available information has not been previonly employed in the same original manner or method to the best of om knowledge and belief.

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t AW-97-1109 (v)

Enclosed is Letter NSD-NRC-97-5136, May 16,1997 being transmitted by Westinghouse Electric Corporation (W) letter and Application for Withholding Proprietary Information from Public Disclosure, Brian A. McIntyre (W), to Mr. T. R. Qusy, Office of NRR. The proprietary information as submitted for use by Westinghouse Electric Corporation is in response to questions concerning the AP600 plant and the associated design certification application and is expected to be i

applicable in other licensee submittals in response to certain NRC requirements for justification oflicensing advanced nuclear power plant designs.

This information is part of that which will enable Westinghouse to:

(a)

Demonstrate the design and safety of the AP600 Passive Safety Systems.

(b)

Establish applicable verification testing methods.

(c)

Design Advanced Nuclear Power Plants that meet NRC requirements.

(d)

Establish technical and licensing approaches for the AP600 that will ultimately result in a certified design.

I (e)

Assist customers in obtaining NRC approval for future plants.

Further this information has substantial commercial value as follows:

l (a)

Westinghouse plans to sell the use of similar infonnation to its customers for i

purposes of meeting NRC requirements for advanced plant licenses.

(b)

Westinghouse can sell support and defense of the technology to its customers in the licensing process.

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AW-97-1109 Public disclosure of this proprietary information is likely to cause substantial hann to the competitive position of Westinghouse because it would enhance the ability of competitors to provide similar advanced nuclear power designs 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 infonnation 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.

l 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 analytical methods and receiving NRC approval for those methods.

Further the deponent sayeth not.

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12054 DOC

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Preliminary Description of WGOTHIC Evaluation Model

1. INTRODUCTION The containment integrity analyses for the AP600 are performed with the WGOTHIC code pack-age which is described and validated for use in WCAP 14382. He contamment evaluation model was developed using the WOODBC preprocessor. De preprocessor permits the generation of an input deck within a graphical user interface. This greatly facilitates the creation, editing, and veri-Scation of a model. ne following is a detailed description of the contamment evaluation model of the AP600 used for containment integrity analyses.

2. AP600 WGOTHIC MODEL The WGOTHIC model of the AP600 consists of a network at 6W parameter control volumes.

j Eighty seven control volumes are used to represent the inner volume of the contamment and six-teen volumes are used to represent the Passive Contaiamane Cooling System (PCS) annular How path, ultimate heat sink, the environment. nese control volumes are linked together with junc-tions which represent flow connections between the volumes.no inner containment volumes are connected using 251 junctions, the outer containment volumes are connected using 16 junctions.

Inside contamment the walls, major piping, and metallic structures are modeled using thermal conductors. Rese structures are modeled using 200 thermal conductors, na PCS is modeled using the clime model. The containtnent shell is modeled with 56 climes. A detailed breakdown of all this information is provided in the following sections.

A cut away view of the inner structures of the AP600 is provided in Figure 1. nis 6 ure provides 3

a relatively uncluttered view of where the major componens are located inside contamment. His figure is a cutawmy vww at about the 100 feet elevation inside containment. Only the concrete and major components are displayed for clarity. Pisurs 2 presents the same elevation without the com-ponents. His Agure permits a view of the layout of the campertmans below the operating deck.

This figure will assist in visualizing the simpli8ed skeech that is used to describe the compart-ments that are modeled below the operating deck. The various compartmens are labeled for con-venience. De core makeup tank room is not shown but ress above the accumulators and chemical and volume controlrooms.

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Steam Generators Reactor r

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i Figure 1: Cutaway Mew of the 100 feet elevation of the AP600 Including Major Components

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1 Accum = Accumulator CVS = Chemical and Volume Control System Rx = Reactor Cavity S/G = Steam Generator l

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i Figure 2: Cutaway View of the 100 feet elevation of the AP600 Excluding Major Components Pass 3 of 4 1_

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Due to their proprietary nature, Sections 2.1 through 2.11 have been removed from the non-proprietary version of this document. These sections include the following.

i 2.1 Reactor Cavity Description 2.2 Coolant Drain Tank Cavity Description 2.3 Southeast Accumulator Cavity 2.4 Northeast Accumulator Cavity 2.5 East Steam Generator Cavity 2.6 West Steam Generator Cavity 2.7 North Core Makeup Tank Cavity 2.8 South Core Makeup Tank Cavity 2.9 Chemical and Volume Control Cavity 2.10 Refueling Room

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2.11 Internal Refueling Water Storage Tank Eech of these sections contains control volume descriptions, flow path descriptions, thermal conductor descriptions and special modeling assumptions used in the containment evaluation model of the AP600 for containment integrity analyses.

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