ML20113C389
| ML20113C389 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 06/24/1996 |
| From: | Mcintyre B WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Quay T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19311C038 | List: |
| References | |
| AW-96-978, NUDOCS 9607010200 | |
| Download: ML20113C389 (18) | |
Text
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l Westinghouse Energy Systems Ba 355 Electric Corporation Pittsbu@ Pennsylvania 15230-0355 AW-96-978 June 24,1996 i
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f)ocument Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 l
ATTENTION:
T.R. QUAY l
APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE
SUBJECT:
EVALUATION OF LOW FLOW DNB DATA OF THE MODIFIED V51UIFM FUEL FOR AP600
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 in confidence.
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-96-978 accompanies this application for withholding setting forth the basis on which the identified proprietary l
l information may be withheld from public disclosure.
Accordingly, it is respectfully requested that the subject information which is proprietary to j
Westinghouse be withheld from public disclosure in accordance with 10CFR Section 2.790 of the I
Commission's regulations.
Correspondence with respect to this application for withholding or the accompanying affidavit should l
reference AW-96-978 and should be addressed to the undersigned.
Very truly yours, f-r e
Brian. M Intyre, Manager Advanced Plant Safety and Licensing
/nja Kevin Bohrer NRC 12HS cc:
2810A 9607010200 960624 PDR ADOCK 05200003 A
AW-96-978 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:
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COUNTY OF ALLEGHENY:
Before me, the undersigned authority, personally appeared Brian A. McIntyre, 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 avennents of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief:
Y$r
/
Brian A. McIntyre, Manager Advanced Plant Safety and Licensing l
Sworn to and subscribed before me this day of M
1996
)
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Notary Public i
te ard seat Rose MaWm.N2ary Pudic Morvoevgia ogn,..,7.: y Courg W Condmyi Es;e3 [m,4,3 gg,3 WTitan,Ponns/vivuh m%-
2811A
AW-96-978 (1)
I am Manager, Advanced Plant Safety And Licensing, in the Advanced Technology Business Area, 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 withholding on behalf of 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 i
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 ta 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.
l Under that system, information is held in confidence if it falls in one or more of i
several types, the release of which might result in the loss of an existing or potential i
competitive advantage, as follows:
28ll A
AW-96-978 (a)
The information reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) where prevention of its use by any of I
Westinghouse's competitors without license from Westinghouse constitutes a competitive economic advantage over other companies.
i (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.
t (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 dhninishes the Westinghouse ability to
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sell products and services involving the use of the information.
)
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j AW-96-978 l
(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 1
competitive advantage is potentially as valuable as the total competitive advantage. If competitors acquire ynents of proprietary information, any j
one component may be the key to the entire puzzle, thereby depriving Westinghouse of a competitive advantage.
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l (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.
I (f)
The Westinghouse capacity to invest corporate assets in research and l
development depends upon the success in obtaining and maintaining a r
competitive advantage.
j (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.
l (iv)
The information sought to be protected is not available in public sources or available io information has not been previously employed in the same original manner or method to the best of our knowledge and belief.
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l (v)
Enclosed is Letter NSD-NRC-96-4755, June 24,1996 being transmitted by i
Westinghouse Electric Corporation M) letter and Application for Withholding Proprietary Information from Public Disclosure, Brian A. McIntyre M), to Mr. T. R. Quay, Office of NRR. The proprietary information as submitted for use by l
Westinghouse Electric Corporation is in response to questions concerning the AP600 plant and the associated design certification application and is expected to be applicable in other licensee submittals in response to certain NRC requirements for f
justification of licensing advanced nuclear power plant designs.
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AW-96-978 1
i 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.
(e)
Assist customers in obtaining NRC approval for future plants.
Further this information has substantial commercial value as follows:
)
(a)
Westinghouse plans to sell the use of similar information to its customers for purposes of meeting NRC requirements for advanced plant licenses.
(b)
Westinghouse can sell support and defense of the technology to its customers 1
in the licensing process.
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Public disclosure of this proprietary information is likely to cause substantial harm to j
the competitive position of Westinghouse because it would enhance the ability of competitors to provide similar advanced nuclear power designs and licensing defense i
l services for commercial power reactors without conunensurate expenses. Also, public I
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.
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2811A
AW-96-978 t
l 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, i
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 i
analytical methods and receiving NRC approval for those methods.
Further the deponent sayeth not.
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ATTACIIMENT 2 to NSD-NRC-96-4755 Westinghouse Non Proprietary Class 3 2810A w
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EVALUATION OF LOW FLOW CHF DATA OF MODIFIED V5H/lFM FUEL i
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- 1. BACKGROUND l
t The report on the AP600 low flow Critical Heat Flux (CHF) test data analysis (Reference 1], was submitted in May 1995. " Low flow" pertains to mass flux levels 8
below 1.1 Mlbm/hr-ft Based on the test data cf the original Vantage 5H (V5H) fuel design with Intermediate Flow Mixer (IFM) grids, an adjustment was made to the WRB-2 Departure from Nucleate Boiling (DNB) correlation for the AP600 low flow applications as described in Reference 1.
l Subsequently, Westinghouse has modified the V5H grid design to improve Departure from Nucleate Boiling (DNB) and vibration performance, ne Modified V5H fuel design, CHF testing, and evaluation with the (original) WRB 2 correlation on the test data within its applicable range are presented in Reference 2. Described below are the results of an evaluation of the low flow test data with the adjusted WRB-2 correlation for AP600.
- 2. LOW FLOW DATA EVALUATION As shown in Reference 1, the data range for the adjusted WRB-2 DNB correlation is as follows:
1503 s Pressure s 2430 psia 0.48 s Local Mass Flux s 1.04 x 10' lbm/hr-ft*
l 0.0 $ Local Quality s 0.81 here are 32 data points within the above range from the CHF test obtained from the typical cell bundle of the Modifief 5H faci desiga. The CHF data containing inlet pressure, inlet mass flux, inlet ten sure, and average bundle heat flux are listed in Table 1. The table also identifies cods / hermocouples that indicated a CHF event.
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Figure I shows the test configuration and radial power distribution. Figure 2 shows the locations of grids and thermocouples along the heated length. Figure 3 shows the axial power profile used for the CHF test.
The methodology used to analyze the low-flow CHF data for the Modified V5H/IFM fuel design was consistent with that described in Reference 1. As before, the WESTAR code (Reference 3] was used to calculate the subchannel fluid conditions for l
each data point in Table 1.
l THAT-96-079 Page 2 of II i
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j Figures 4 and 5 show the ratio of measured to predicted CHF (M/P) using the adjusted WRB-2 as plotted against local mass flux and local pressure, respectively. He statistics of the M/P's for CHF data in Table 1 are listed below:
No. of Data:
. _3 2
,g M/P Mean:
i M/P Std. Dev.
95/95 Limit DNBR He adjusted WRB-2 predictions are conservative as compared to the test data, particularly at flow rates above 1.0 Mlbm/hr ft'. The conservative predictions res34tp a high M/P mean and a large standard deviation. He 95/95 DNBR limit of[
,m Reference 1, which was derived from the test data of the original V5H fuel design, is bounding for the test data of the Modified V5H/lFM fuel design.
- 3.
SUMMARY
l De low Dow CHF test data of the Modified V5H fuel were evaluated using the adjusted WRB-2 correlation and the WESTAR code. gevaluation shows that the adjusted WRB-2 correlation with a 95/95 limit of[
] remains bounding for the AP600 loss of Dow and locked rotor analyses with the Modified V5H fuel.
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- 4. REFERENCES 1.
Olson, C.A., Smith, L.D., and Sung, Y., AP600 Low Flow Critical Heat Flux (CHF) Test Data Analysis, WCAP-14371, May 1995.
2.
Letter to R.C. Jones (USNRC) from N.J. Liparuto (Westinghouse), Transmittal ofPnsentation Materialfrom NRC(Westinghouse Fuel Design Change Meeting on April 15,1996, NSD-NRC-96 4964, April 22,1996.
3.
Ho, S.A., Olson, C.A., and Paik, I.K., WESTAR: An Advanced Three.
Dimensional Program for the Thermal-Hydraulic Analysis of Light Water Reactor Cores, WCAP-10951-P-A, June 1988.
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THAT 96-079 Page 4 of Il l
4 Table 1 1
AP600 Low Flow CHF Test Results (Modified V5H/IFM Grid) 5x5 Typical Cell l
WStar CHF Inlet Inlet Mass Inlet Average
'thermocouples Indicating Run Test Pressure Flux Temp.
Heat Flux CHF M l
ID Run (psia)
(lbm/hr-ft')*
(F)
(Btu /hr ft')
- 96-E6
- E6 l
, (b,Q xxx,
I 113
[
2 119 3
125 j
4 4
91 5
97 4
6 100 l
7 114 l
8 120 l
1 l
9 126 e
10 92 l
11 98 i
j 12 101 l
13 115
[
14 121 1
j 15 127 I
16 93 17 99 t
18 110 19 116 20 122 j
21 128 22 94 4
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THAT-96479 Page 5 cf 11 6
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k Table 1 AP600 Low Flow CHF Test Results (Modified V5H/IFM Grid) 5x5 Typical Cell W Star CHF Inlet Inlet Mass Inlet Average Thermocouples Indicating i
Run Test Pressure Flux Temp.
Heat Flux CHF0) l ID Run (psia)
(ibm /hr-ft )*
(F)
(Btu /hr-ft')
2 l
- 5 E6
- E6
_ b,c)
(
(
xxx 23 111 24 117 25 123 26 129 27 95 i
28 112 29 118 l
30 124 l
31 89 32 96 l
Note:
l (1)
Thermocouple identification example: 24.2 = rod # 24, axial position # 2.
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Finure 1 Cross-Section Configuration and Radial Power Distribution l
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.THAT.96479 Page 7 of II
Figure 2 Axial Geometry
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uv = utnine ane orid v
Tsc = Thermoenpie as sienpiesupportorld BOHL = Beginning of Heated length IFM = Intermediate Flow Mixer EOHL = End of Heated length I
MT-96-079 Page 8 of Ii
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