ML20207L922

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Requests That Proprietary Rept WCAP-10988 Re Response to NRC Questions on COBRA-NC/Model 3 Be Withheld from Public Disclosure (Ref 10CFR2.790).Affidavit Encl
ML20207L922
Person / Time
Site: McGuire Duke Energy icon.png
Issue date: 09/26/1988
From: Wiesemann R
WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To: Murley T
Office of Nuclear Reactor Regulation
Shared Package
ML20207L914 List:
References
CAW-88-105, NUDOCS 8810180025
Download: ML20207L922 (9)
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9 1 Westinghouse PowerSystems e wem Electric Corporation S'r'*

  • b 3M MrugiFemyiams 15230 03%

September 26, 1988 CAW-88-105 Dr. Thomas Murley, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commissior Washington, D.C. 20555 APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION Fh0M PUBLIC DISCL0sURE

Subject:

Response to NRC Questions on COBRA-NC/Model 3 (WCAP-10988)

Dear Dr. Murley:

The proprietary material for which withholding is being requested in the reference letter by the ruke Power Company is further identified in an affidavit signed by the l owner of the proprietary infonnation, Westinghouse Electric Corporation. The affidavit, which acccrepanies this letter, sets forth the basis on which the infonnation may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of 10CFR Section 2.790 of the Commission's regulations.

The proprietary material for which withholding is being requested is of the same 3

technical type as that proprietary material previously suttnitted with Application for Withholding AW-76-045.

Acconfingly, this letter authorizes the utilization of the accccpanying affidavit by Duke Power Company.

Correspondence with respect to the proprietary aspects of ti.e application for withholding or the Westinghouse affidavit should reference this letter, CAW-88-105, and should be addressed to the undersigned.

Very truly yours, .

'lLL , ()lli (M Robert A. esemann, ager

/tu Regulatory & Legislative Af fairs Enclosure (s)

- cc: E. C. Sheetaker, Esq. _l 1

Office of the General Counsel, NRC t i

i GS10180025 881012 PDR ADOCK 05000364 i . P FDC 1

PROPAIETART INF0WTION WOTICE TRANSK:TTD NDEWITH AAI PSDPAIETART AND/OR NON-PAOPAIETAR DCQJMENTS FURNISHG TO THE NRC IN CCNhTCTION WITH REQUE PLAhi SMCIFIC REVIDI AND APPA0VAI..

IN DEER TD CChTCP.M 70 THE REQUIRDOT5 W 10CFR2 790 W IME CCH RESULATIONS CONCD.NIC THE PADTICTION & PROPAIETART IFDMT 70 THE XR;, THE Ih7DMTION WHICH IS PMPAIETART IN THE PMPAIETARY YERSICSS CONTAIND WITHE SMCKE13 AD WHD.E THE PMPAIETART INFOMTION MAS

  • EE*.ETD IN THE ME-PROPAIITARY YD5 IONS OC.T THE SMOIT3 RDR3, THE -

Ih7DP/ATION THAT VAS CDiTAIND WITh3 THE 3RA3273 IN THE PA0PAIE Kri3 SIM DC.ETC. THE JUSTIFICATION FDR CLAIM 30 THI INF0MTION S0 DESI3MTD AS PR0rAUTAP.T 23 ICICATD IX SUIN YEP 3 IONS ST MEAN LCTEPS. (a) Tl!ROUCH (g) C0hiAING WITHIN PAP.Di7HI3E5 LOCATE A5 A EPER3CRIM '

IXKT.:IATE.7 FOR.CWD7 THE BM3273 Dic.CEIm F.AQi ITDI QF INFDMTION DIXTIFIIP AS PRDPAIITART Ch IN THE MAMIN OPPQSITE WQi IATOMTION.

THESE

' LCMD CASE LETTERS ADIA 70 THE TTPI3 & INFOMTION VESTIOCUSE C HC:.05 IN COiFIDENCE IDD.7ITIID IN SECTIONS (4)(it)(a) hp (4)(11)(3) 0F THE APTIDAVIT ACCOMPAhTIM THIS TRANSK:TTAL PURSJAh71010CFR2 790  !

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. O AW-76-45 AFFIDAVIT COP 9GWEALTH OF PENNSYLVANIA:

ss W W OF Al.LEGHENY:

.Sefore me, the undersigned authority, personally appeared debert A. Wiessmann, who, being by me duly sworn according to law, de-pses and says that he is authorized to executs this Affidavit on behalf ofWestinghouseElectricCorporation("Westinghouse")andthattheaver-eents of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief:

ALMll tu Robert A. Wiesemann, Manager Licensing Programs ,

4 Sworn to and subscribed befor Lntthis.8 day of 'Q/M// 1976.

/ WM/f4/L.)

Notaryfublic u ..:. ,, t e :: . '

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AW-76-45 o

(1) I am Manager, Licensing programs, in the Pressurized Water Reactor

.$ystans Division, of Westinghouse Electric Corporation and as such, I have been specifically delegated the function of reviewing the Troprietary information sought to be withheld from public dis-closure in connection with nuc*iear power plant licensing or rule-making proceedings, and am authorized to apply for its withholding en behalf of the Westinghouse Water Reactor Divisions.

(2) I as making this Affidavit in conforwance with the provisions of 10 CFR Section 2.790 of the Comission'_s regulations and in con-junction with the Westinghouse application for withholding ac-companying this Affidavit.

(3) I have personal knowledge of the criteria and procedures utilized by Westinghouse Nuclear Energy Systems in designating infonnation as a trade secret, privfleged or as confidential comercial or financial information.

(4) pursuant to the provisions of paragraph (b)(4) of Section 2.790 of the Comission's regulations, the following is furnished for consideration by the Comission in determining whether the in-formation sought to be withheld from public disclosure should be withheld.

(1) The information sought to be withheld from public disclosure ,

'is owned and has been held in confidence by Westinghouse.

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AW-76-45 (ii) The infonnation is of a type customarily held in confidence by Westinghouse and not customarily disclosed to the pubite.

Westinghouse has a rational basis for detennining the types of information customarily held in confidence by it and, iri that connection, utilizes a system to determine when and whether to hold certain types of information in confidence. The ap-plication of that system and the substance of that system constitutes Westinghouse policy and provides the rational basis required.

l Under that system, infonnation 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 com-petitive advantage, as follows:

(a) The information reveals the distinguishing aspects of a process (orcomponent, structure, tool, method,etc.)

4 where prevention of its use by any of Westinghouse's comp 2titors without license from Westinghouse constitutes a competitive economic advantage over other companies.

l (b) It consists of supportirg data, including test data, j relative to a process (or component, structure, tooi,

method, etc.), the application of which data secures a competitive economic advantage, e.g., by optimization or improved unrketability.

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AW-76-45 (c) Its use by a competitor would reduce his expenditure of resources or improve his cospetitive position in the design, ahnufacture, shipment, installation, assurance of quality, or licensing a similar product.

(d) It reveals cost or price information, production cap-acities, budget levels, or commercial strategies of

-l Westinghouse. its customers or suppliers.

(e) It reveals aspects of past, present, or futu e West-

! inghouse or customer funded development piens and pro-grams of potential consercial value to Westinghouse.

(f) It contains patentable ideas, for which patent pro-taction may be desirable. .

, (g) It is not the property of Westinghouse, but must be i

treated as proprietary by Westinghouse according to ';

l agreements with the owner.

1 There are sound policy reasons behind the Westinghouse j system which include the following:

(a) The use of such infonmation by Westinghouse gives i Westinghouse a competitive advantage over its com-

  • petitors. It is, tA refere, withheld from disclosure to protect the Westinghouse competitive position.

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(b) It is information which is marketable in many ways.

The extent to which such infornation is available to competitors disintJhes the Westirghouse ability to sell products and services involving the use of the inforestion.

(c) Use by our competitor would put Westinghouse at a i competitive disadvantage by reducing his expenditure of resources at our expeM e.

( J) Each component of proprietary infomation pertinent te a particular competitive advantage is potentially I as valuable as the total competitive advantage. If competitors acquire components of proprietary infor-nation, any one component may be the key to the entire puzzle thereby depriving Westinghouse of a competitive advantage.

o (e) Unrestricted disclosure would jeopardize the position of prominence of Wdinghouse in the world market, and thereby give a market advantage to the compctition in those countries.

(f) The Westinghouse capacity to invest corporate assets l in research and development depends upon the success in obtaining and maintaining a competitive advantage, s i

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

(iv) The information is not available in public sources to the best of our knowledge and belief.

(v) The proprietary information sought to be withheld in this submittal is that which is appropriately marked in WCAP-8821,

'Tranflo Steam Generator Code Description" (Proprietary),

being transmitted by Westinghouse Letter No. NS-CE-1219.

Eiche1dinger to Stolz, dated September 29, 1976. This report is being submitted pursuant to the NRC's Topical Report Program for generic review by the Regulatory Staff and is ex-pected to be referenced in several license applications.

This infomation enables Westinghouse to: ,

(a) Justify the design basis for emergency systems.

(b) Assist its c"st #Ar.s to obtain licenses.

(c) Optimize long-ters cooling design.

Further, this information has substantial comercial value ,

as follows:

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. AW-76-45 (a) Wastinghouse sells the use of the information to its customers for purposes of meeting NRC requirements for

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licensing documentation.

(b) Westinghouse uses the information to perform and justify analyses which are sold to customers.

Public disclosure of this information is likely to cause sub-stantial harm to t',e competitive position of Westinghouse because it 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 this information is the result of many years of Westinghouse effort and the expenditure of a con-siderable sum of money.

In order for com,oetitors of Westinghouse to duplicate this information, siellar engineering programs would have to be performed and a significant manpower effort having the requisite talent and experience, would have to be expended for data analyses and code development.

Fu'rther the dponent sayeth not.

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WESTINGHOUSE CLASS 3 WCAP-10989 Addendum 2 COBRA-NC, ANALYSIS FOR A MAIN STE.M INE BREAK IN THE CATAWBA UNIT 1 !CE CONDENSER CONTAINNENT (RESPONSE TO NRC QUESTIONS)

SEPTEMBER, 1988 t

WESTINGHOU$iELECTRICCORPORATION NUCLEAR ENERGY SYSTEMS P. O. B0X 355 P!TTS8URGH, PENNSYLVANIA 15230 0

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TABLE OF CONTENTS SECTION TITLE PAGE 1.0 SLMURY l'1 2.0 RESPONSE TO NRC QUESTIONS 2-1 3.0 REFERENCEh 3-1 l

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i LIST OF FIGURES

  • FIGURE TITLE PAGE 1 Channel L4yout for Level 1 2-8 2 Dimensions for the Pipe Tunnel 2-9 i

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LIST OF TA8LES TITLE PAGE

- TA8LE {

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1 GAP 3 (Door 8) 2-12 2 GAP 10 (Door 12) 2-16 3 GAP 17(Door 16) 2-20 4 GAP 24(Door 20) 2-24 5 GAP 31 (Door 24) 2-28 6 GAP 38(Door 28) 2-32 7 GAP 45 (Door 32a) 2-36 8 GAP 156 (Door 32b) 2-40 9 GAP 124 (Dcor 32c) 2'44 10 GAP 52(Door 36) 2-48 11 Axial Area Data 2-52 12 Lateral Area Data 2-60 13 Hydraulic Diameter for Lateral Connections 2-75 9

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1.0 $UMMARY The NRC has authorized the ANL to perform an independent confirmatnry analysis using the COMNIX code to calculate the resulting conditions of the main steam line break in ice condenser containments. ANL had reviewed the ice condenser containment model developed by Westinghouse using the COSRA-NC code for the Catawba Unit 1 ice condenser documented in WCAP-10988. Questions were raised by ANL in April 1988 concerning the COSRA-NC sodel, and answers were provided to ANL in May 1988, and were documented in Addendum 1. WCAP-10988. Additional information was requested by ANL/NRC in July 1986. This addendum addresses these requests / questions. Specifically this addendum provides detailed information on: 1) mass flow rates through the condenser doors as a function of time, 2) nominal and blocked flow areas in both axial and transverse directions, 3) the geometry of the pipe tunnel and 4) hydraulic diameters for lateral flow connections.

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2.0 RESPONSE TO ANL/NRC QUESTIONS Question 1

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The volume porosity or actual fluid volume at each basic mesh cell in C08RA-NC/Model 3 In response to question 3: " ....It is g the volume porosity defined by the equation shown in the question. The volumes listed in Table 5.2 are those occupied by fluid in each cell; they are not the total control volume for the

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cell.'

a. The above statement is incorrect, because by using the redii :nd dividing angles as given in Fig. 1 or by the inspection of the values in Table 5.2, it can be shown that the volumes listed in Table 5.2 are the total t

control volume for the basic mesh cells for COBRA-NC/Wodel 2.

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b. Page 77 of the WCAP-10988 report: "The nominal and actual volume and the hydraulic diameter for each cell are given in Table 5.2."

Since the actual volume is not listed in Table 5.2, does the above statement indicate that it can be calculated from the product of the nominal volume and the porosity? If so, what values of volume porosity are used for levels 9 and 10 in Model 37 If the porosity listed in Table 5.2 is not the volume porosity as defined by COMMIX, please provide the volume porosity or the actual volume occupied by fluid at each basic cell in C06RA-NC/Wodel 3.

Pesoonse to Question 1

a. The definition for the ' volume porosity' given by the 4/18/88 transmittal from ANL/NRC to TVA was Volume porosity = Volume occupied by fluid in a control volume Total control surface 1sa3v:10/coc7ss 2-1

This ecuation is incorrect. The ' porosity" shown in Table 5.2 of l WCAP-10988 is not the "volume porosity" defined by this equation, as was ind1cated in WCAP-10988, Addendum 1. The "volume porosity" definition ,

should have been Volume porosity = Volur.e occupied by fluid in a control volume i Total control volume and this was confirmed by T. b. Chien of ANL during a telephone conversation on 7/12/88. According to this corrected definition, the i porosity given by Table 5.2 which was the ratio of the actual continuity-cell area to the nominal continuity-cell area, is equivalent to the volume porosity so defined since the cell length in the axial  ;

direction is the same. ,

b. The volumes listed in Table 5.2 of WCAP-10988 are the total control volumes for the continuity cells of COBRA-NC/Models 1 and 2. In Model 3, .

the top level (level 8) from Models 1 and 2 was divided into two equal ,i height levels (8 and 9). The flow area, the volume and the volume  ;

porosity were assumed to be the same for these two levels. l l

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Ouestion 2 The surface porosity or the actual flow area at each basic mesh cell in COBRA-NC/Model 3 In response to question 3: "For the transverse directions, the flow areas are given by (gap width)*(es11 height)." By checking the information given in Fig.1, these flow areas are the nominal flow areas. Please provide the actual flow areas in the transverse directions for each basic cell.

Response to Question 2 The nominal and the blocked areas for the gaps in the lateral directions are listed in Table 12 of this Addendum. Please see Table 12 for details.

1sas a e m o7sa 2-3

Question 3 l

l l The hydraulic diameters in the transverse directions

  • In response to question 2:

'In the transverse directions, the flow areas are calculated differently by (gapwidth)*(cellheight). The wetted perimeters are calculated internally in the code based on the length of the gap, the numbers of the walls, and the height of the cell. These parameters are eatered into the code by INPUT DATA LINES 354-569."

Since the flow arvas are the nominel flow areas and the wettad perinters are calculated internally, the hydraulic diameters can not be calculated from the available information in the report. Please provide the values of hydraulic diameters in the transverse directions used in COBRA-NC/Model 3 calculation.

Response to Question 3 -

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Values of hydraulic diameters in the transverse directions used in the COBRA-NC/Model 3 are listed in Table 13 of this Addendum. Please see Table 13 for details. ,

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1ssacto/osons 2-4

Question 4 The tabulated mass flowrates through the ice condenser doors as a function of time at each sector l

In the Westinghouse response to question 7, the mass flowrates through doors 32a, 32b, and 32c are given in Tables 1, 2, and 3. Please explain how to use l

! these tables and also provide the mass flowrate through the rest of the ice condenser doors, i.e., doors 8, 12, 16, 20, 24, 28, and 36. Please provide f 1 more detailed information at different time steps if it is available.

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! Response to Question 4 l

1 Mass flow rates (liquid, vapor and entrainment) for doors 8, 12, 16, 20, 24, j 28, 32s, 32b, 32c and 36 are listed. Please see Tables 1-10 for detail. (

j Please note the total liquid flow is the sum of the ' liquid" and the ,

l 'entrainment" flows shown in the tchles. The "door" is represented by cells with axial range from 860.3 in. to 982.7 in.

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Question 5 The location and dimension of the 8-foot high pipe tunnel underneath the spent '

fuel storage area In the response to question 5. Westinghouse did not provide the dimension of the pipe tunnel. Please provide the location and dimension of the tunnel and describe its functions end importance in the lower containment.

Response to Question 5 A description for the pipe tunnel model is shown on the next page. Please also see Figures 1 and 2 for its location and detail dimensions.

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FIFE TUNEL MODEL DESCRIPTION l

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LD,4 Figum 2 - Muensions for the Pfpe Tumel O

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Question 6 Explanation of the variation tables listed in the INPUT DATA LINES 872-1748 From the response to questions 3 and 4 it indicatn that the variation tables for the axial area sultipliers, the axial peris ter multipliers, the axial loss coefficients, and the lateral loss coefficients used in C00RA-NC are given in INPUT DATA LINES 872-1748. Please esplain how these tables are used in Section B of Model 3, where 9 axial levels are used to model the lower containment, hsponse to Ovestion 6 In the Input Data list given by WCAP 10988, variation table numbers are 'iste:

from Lines 19 146 for all the channels. t 3,c )

Numerical values for the multipliers at all the nodes are given in Lines l l

872 1748.

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Table 11 and Table 22 of this Addendus contain tufsrus,: ion for the nominal and '

the blocked flow areas at the amontus-cell centers in the axial and the The fors=less coefficient may be detersined laterei directions respctively.

by the infermation provided in these tables and by vaing published flow-restriction coefficient tables or curves.

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GAP 17 (DOOR 16)

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TABLE 7(CONTINUED) (JjQ.

GAP 45(000R32a) 6 J

G 0

2 37

TABLE 7 (CONTINUED)

GAP 45 (DOOR 32a)

(Dk) s 8 P i

i I

i l

I t

l i

l l

l l

l

' . I 2-38

4 TA8LE 7 CONTINUED)

GAP 45 000R 32a) Us()

l n

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t b

l n

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r f

P 1

1 il

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l 2-39 i I r

. - - - . .- - - . , _ , . - - . - , , _ , , . . . . , , - , , , , _ , . . . , _ , . _ , - . - . . ~ , - - . , . _ . _ , _ , . . . , . _ , , - - , . - _ . _ . . .

--e-9 TABLE 8 GAP 156 (DOOR 32b)

(,2.C.)

S t

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b i

1 6

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TABLE 8(CONTINUED) (J/)

l GAP 156(D00R32L) -

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TABLE 8(C0flTINUED) /s GAP 156 (DOOR 32b) WM 4

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l l l 2-43 I

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l

,. - -- - -- . - - - - --. . _ .- - - --- ., . - - _ . ~ . . - - -

---r ~ - - - - _

[

r TABLE 9 GAP 124 (000R 32c) (J,L)  !

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- . -. , --,.,-..-- - - - - -,,-------------,-,--n.n,----,---- - . , - - - . - , , - ,.-- -_, - . - . , . ,

, - . - .- . . - - _ _ = _ = _ - . . - .

F TABLE 9 (CONTINUED'l GAP 124(DOOR 32c) 9sg e

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1A.A >- n - s 4 s TABLE 9(CONTINUED)

GAP 124 (DOOR 32c) (8,0) t e

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TABLE 9 (CONTINUED)

GAP 124 (DOOR 32c) ggg 1 e

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s vi TABLE 10 GAP 52 (D00R 36) (40 I i

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_. - - - - . _ . _ , _ _ , . - - - _ _ _ _ _ . _ . . , _ _ . _ _ ,. - . . . , . . . - _ _ - _ , _ . - . _ - - - . ~ _ ~ . . _ _ _ . . . _ , . _ , . _ . - , _ _ _ . _ _ _ - _ _ , , - _ - - _ _ _ _ . . _ . - - - -, .

n'y- - - - - - ~ > 1 -u. A 4 a --

TAsa lo (CONTINUED) ~

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A - m- . - .~4 .-,--.-m-~4--- , . --. .e- --haaA-4.a-,,- 4-a*.-4,- .h-- e l

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GAP 52 (000R 36) UsN l l

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' . . ~ _ . - _ _ . - - - - - - - - . _ _ _ _ . _ , .. _ , . ,- . - _ - . . - - - . _ . . . _.~.- .- _ - ,--- --- -,... . - .. - _ ,..- _ . _ _. . _ .._ _ _ . ..

TA8LE10(CONTINUED) (,dtj.)

C GAP 52(DOOR 36)

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- - _. _.- J _ -. . _ _ _ . - _ ~a. 4 .-___ _ w_. .. _

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TABLE 11 - AXIA1, ARIA DATA L8 }

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TABLE 11 (ColtTINUED) T l

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l 2-53 emeoe* == p e eo se = w ese e ep .e

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TABLE 13 (CONTINUED) 3

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TABLE 12 (ColtTINt3D) ,

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e TABLE 12 - LATERAL AREA DATA

  1. N 4

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TABLE 12 (CCHTINUED)

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TABLE 12 (CONTINtED) d 40)

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TABLE !! (Mf!NUID) . i l

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TABLE 12 (CONTINUED) 6

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TABLE 12 (CONTINUED) 5 O

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- , . . . - - - - - - , - . . . - . - - - - - - - - - - - - - - - ----,-,w m-~ ---e,-,-,.-w n-r,, --

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2-72

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TABLE 12 (CCNTINDED)

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2-74

TABLE 13 -

HYDRAULIC DIAMETER FOR LATERAL CONNECTIONS i

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7ABLE 13 (CONTINUED) '

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2-78

3.0 REFERENCES

3.1 Letter from NRC, Ms. S. Black, to TVA, Mr. S. A. White, entitled, Request for Additional Information Regarding Main Steam Line Breaks in Ice Condenser Plants - Sequoyah Units 1 and 2 and Watts Bar Units 1 and 2, dated July 15, 1988, with attachment entitled Additional Information Needed to Prepare COMMIX Input for Modeling the Catawba Ice Condenser Containment after Reviewing the Westinghouse Report WCAP-10988, Addendum 1.

l l

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i iss3<:io/coc7ss 3-1 l

_ _ . _ _ . _ _ _ _ _ _ . . _ - _ . _ _ , _ - _ _ _ _ _ _ __ _

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