ML20063B722

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Requests That Proprietary Presentation Matl from 940125 Meeting on ADS Design Certification Test Plans Be Withheld from Public Disclosure (Ref 10CFR2.790)
ML20063B722
Person / Time
Site: 05200003
Issue date: 01/25/1994
From: Liparulo N
WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To: Borchardt R
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19303F800 List:
References
AW-94-577, NUDOCS 9402020218
Download: ML20063B722 (41)
v • d • e


Text

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Westinghouse Energy Systems Ba 355 Pittsburgh Pennsy!vania 15230-0355 Electric Corporation l

AW-94-577

January 25,1994 l Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 1

ATTENTION: MR. R. W. BORCHARDT APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE

SUBJECT:

PRESENTATION MATERIALS FROM THE JANUARY 25,1994 MEETING ON AP600 ADS DESIGN CERTIFICATION TEST PLANS

Dear Mr. Borchardt:

1 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-94-577 accompanics this application for withholding setting forth the basis on which the identified propric try 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 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 reference AW-94-577 and should be addressed to the undersigned.

Very truly yours,

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//)Q N. J. Liparulo, Mana er

_ Nuclear Safety And Regulatory Activitics -

/nja ec: Kevin Bohrer NRC 12H5

" I 9402020218 940125 PDR ADOCK 05200003 4 A PDR g1

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i AW-94-577 I I

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1 AFFIDAVIT i l

COMMONWEALTH OF PENNSYLVANIA:

ss 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 averments of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief:

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Brian A. McIntyre, Manager Advanced Plant Safety & Licensing Sworn to and subscribed before me this 8 day l of 9M" .1994  !

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d e-4w Notary Pubb()e No'ata!Seol Fese Mxie Payne.Nowy Pute 1 Morroem BoroJAffieny Cout/

My Comrnc9on E> pres Nov.4.1996 Mercer, Poonsylvam AssociaDon at Na'anes 1467A

, ,. l f .* l AW-94-577 (1) I am Manager, Advanced Plant Safety and Licensing, in the Nuclear Technology Division, of .

l the Westinghouse Electric Corporation and as such, I have been specifically delegated the j function of reviewing the proprietary information sought to be withheld from public disclosure l in connection with nuclear power plant licensing and rulemaking proceedings, and am l

l l authorized to apply for its withholding on behalf of the Westinghouse Energy Systems t

Business Unit.

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(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 l withholding accompanying this Affidavit.

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(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. ,

t (4) Pursuant to the provisions of paragraph (b)S) of Section 2.790 of the Commission's regulations, the following is furnished for consi<leration by the Commission in determining whether the information sought to be withhLid 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:

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AW.94-577 (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 l marketability. .J (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. _

l (d) It reveals cost or price information, production capacities, budget levels, or i

commercial strategies of Westinghouse, its customers or suppliers.

(c) 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 patentab!c ideas, for which patent protection may be desirable.

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

l (a) The use of such information by Westinghouse gives Westinghouse a j competitive advantage over its competitors. It is, therefore, 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 information is available to competitors diminishes the Westinghouse ability to sell products and services involving the use of the infonnation.

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.. i AW-94-577 (c) Use by our competitor would put Westinghouse at a competitive disadvantage

by reducing his expenditure of resources at our expense. .

! l (d) Each component of proprietary information pertinent to a particular i 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.

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

l 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 l

Commission. l l

(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.

(v) Enclosed is Ixtter NTD-NRC-94-4050, January 25,1994, being transmitted by l

Westinghouse Electric Corporation (M letter and Application for Withholding l Proprietary Information from Public Disclosure, N. J. Liparulo (E, to Mr. R. W. Borchardt, 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 applicabic in other licensee submittals in response to certain NRC requirements for justification oflicensing advanced nuclear power plant designs.

i 1467A

AW-94-577 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 in the licensing process.

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 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 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.

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AW-94-577 l

In order for competitors of Westinghouse to duplicate this information, similar l

technical programs would have to be performed and a significant manpower effort, I

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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m, WESTINGHOUSE ELECTRIC CORPORATION _

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j PRESENTATION TO UNITED STATES NUCLEAR REGULATORY COMMISSION 1

AP600 Automatic Depressurization System l

Design Certification Test Plans l

ROCKVILLE, MD i

JANUARY 25,1994 i

i L_______________.___.___._ _____ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ __ , .- _ - _ - . _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

AGENDA F' il 1. 7 WESTINGHOUSE /NRC MEETING AP600 ADS DESIGN CERTIFICATION TEST PLANS 9:30 INTRODUCTION J.C. BUTLER 9:45 ADS DESIGN OVERVIEW T. L. SCHULZ 10:30 ADS TEST PLANS E. J. PIPLICA 11:00 ADS ANALYSIS PLANS L. E. HOCHREITER I

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e INTRODUCTION J.C. BUTLER ADVANCED PLANT SAFETY AND LICENSING 1

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liffitaddhiitilti INTRODUCTION S

- The changes to AP600 Automatic Depressurization System design and testing were presented to NRC Senior Management on December 22,1993 Agreement on approach was reached at 12/22/93 meeting A report discussing the ADS design will be provided on February 15,1994 A meeting with NRC staff has been scheduled for February 22,1994 to review and discuss the ADS design

- The purposes of today's meeting:

- outline plans for ADS design certification testing to be performed at VAPORE obtain NRC staff agreement on planned scope of testing

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9 ADS DESIGN OVERVIEW T. L. SCHULZ SYSTEMS ENGINEERING

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ADS DESIGN BACKGROUND __

- ADS design in SSAR (Revision 1) uses gate valves in ADS Stages 2/3/4

- NRC valve specialists raised concerns with gate valve use in ADS design

- Recent MOV testing by EPRI (response to GL 89-10) raised concerns with use of gate valves to control ADS Stage 2/3 c

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- Revised ADS design configuration supported by DOE and Utilities

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REVISED ADS CONFIGURATION -_

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I prqg EXAMPLE ADS STAGE 1/2/3 VALVE TYPES 1,.

Two Examples of Valve Configurations Possible with Revised ADS Design Example 1 Example 2 Rf

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EXAMPLE ADS STAGE 4 VALVE TYPES ..

Two Examples of Valve Configurations Possible with Revised ADS Design ,

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nmtwm!I ADS SAFETY ANALYSIS / PRA 6

- Revised ADS Design Has More Single Failure Flow Capacity Than SSAR

- Greater flow area Lower UD

- Spurious ADS Performance Has Been Analyzed Limitirig event for ADS performance Shows no core uncovery

- ADS Valve Reliability Used in PRA Based on conservative interpretation of historical failure rate data Conservative reliability values will be used to allow different ADS valve types (l

Immaan ADS DESIGN CERTIFICATION TESTING 1*

- ADS Test facility is VAPORE in Italy

- Phase A Tests (completed)

Full pressure and steam flow through prototypical sparger Provides data on sparger flow performance and hydrodynamic loading on the IRWST

- Phase B Test Objectives Provide data to validate the safety analysis models used to calculate ADS flow

- Obtain loads on the piping, sparger and quench tank

- Phase B Tests

- Full scale simulation of ADS flow path from pressurizer to IRWST

- ADS stage 1/2/3 lines each represented by one valve arid an orifice / flow nozzle

- Saturated steam and two-phase flow conditions e

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AUTOMATIC DEPRESSURIZATION SYSTEM TEST PLANS t

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p" ilg' ADS PHASE B TEST OBJECTIVES u. i OVERALL

- To collect thermal hydraulic performance data that will be used to verify the' analytical models used in safety analyses.

SPECIFIC

- To obtain fluid temperature, pressure and pressure drop data over a range of mass flow rates through a full scale simulation of the ADS

- To determino sparger and quench tank loading conditions under maximum mass flow conditions 15

l lP~~j ADS PHASE B TEST DATA USAGE ,,.-,

. Thermal Hydraulic Performance Data to Confirm Safety Analysis Modeling of the ADS

- Loading Data (extension of Phase A tests)

- To obtain hydraulic loads on the sparger arms and sparger support To determine pressure impulses generated by the sparger, as a function of distance from the sparger and the quench tank wall I t,

prg ADS PHASE B TESTING APPROACH m,f GENERAL ,

. Tests will be performed to represent high flow resistance (minimum venting flow) and low flow resistance (maximum loads)

. This will be done for both saturated steam blowdowns and saturated steam / water conditions SPECIFIC

- These conditions will be obtained by varying:

The system configuration The flow path (i.e., stage 1 only, stage 1 and 2, etc.)

The flow area of each flow path

- The system conditions at the entrance to the test loop Pressure ,

Fluid quality 17

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ADS TEST LOOP CONFIGURATION _

- Full Scale Simulation of the ADS System:

Loop seal ADS valve piping package Downstream piping Sparger

- Quench Tank Geometry:

Diameter 25 feet Water level 24 feet

- Sparger arms located 9.5 feet below water level

ADS PHASE B TEST FACILITY SCHEMATIC 4*. P.s S- m .- ~

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1i: ai ADS TEST FACILITY BLOWDOWN CHARACTERISTICS m.E

- Facility depressurization is more rapid.than AP600 so the transient time after the valve is fully open is relatively short (Phase A with stages 1,2 and 3 open lasted ~20 seconds).

- Tests consist of individual blowdowns for each ADS configuration (i.e., Stage 1 or Stages 1 and 2, or Stages 1,2 and 3 open).

- Facility supply tank initial pressure / temperature and the supply valve opening time is selected to control pressures.

- Maximum pressure upstream of the ADS piping package (and maximum flow) occurs when the supply valve reaches full open position

- Pressure and flow response is then dictated by the facility supply tank depressurization and the fixed ADS configuration.

- Blowdown is normally terminated by closing the supply valve to prevent total draindown of the supply tank.

- Transient is sufficiently long to observe and record differential pressure vs. flow, temperatures, and quench tank response.

nimiminni ADS PRE-OPERATIONAL TESTING .. _ _

Pre-operational tests will be performed to satisfy the following requirements:

Facility commissioning (turnover from contractor)

Instrumentation checkout Facility characterization (piping resistances)

Operator training 1

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ADS SYSTEM TESTING -

- Saturated Steam Blowdowns

- Steam from top of supply tank Range of pressures for each ADS flow path Maximum flow resistance simulated Minimum flow resistance simulation provided by Phase A tests 2

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ADS SYSTEM TESTING (continued) J. .

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- Steam and Saturated Water Blowdowns for Minimum ADS Venting .

Saturated water from bottom of supply tank Range of pressure for each ADS flow path Maximum flow resistance simulated Facility supply valve (12 inch gate) positioned to obtain a range of qualities enterir:g the valve piping package f

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lllP'lll ADS SPARGER LOAD TESTS c., .

. Steam and Saturated Water Blowdowns for Maximum Loads

- Saturated water from bottom of supply tank Range of pressure for each ADS flow path Minimum flow resistance simulated Facility supply valve (12 inch gate) fully opened to obtain minimum quality and maximum mass flow entering the valve piping package Quench tank temperature varied to obtain loads over a range of conditions 9

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gr-lig ADS PHASE B TESTS (Preliminary) u....

Blowdown Fluid ADS Simulation AP600 Pressure Comments Simulated Saturated Steam -

Stage 1 open ~ 2250 to 400 psig Maximum flow from top of resistance simulated.

Stages 1 and 2 open ~ 800 to 100 psig Obtain 1Q T/H data.

supply tank Stages 1 and 3 open ~ 500 to 50 psig Stages 1,2, and 3 open ~ 500 to 50 psig Saturated water -

Stage 1 open ~ 2250 to 400 psig Maximum flow from bottom of resistance simulated.

- Stages 1 and 2 open ~ 1200 to 100 psig 12-inch gate valve supply tank obtain a Stages 1 and 3 open ~ 500 to 50 psig fan ' ' o"f 2$ H Stages 1,2 and 3 open ~ 500 to 50 psig Stage 2 open ~ 2235 psig (inadvertent opening at full power)

Saturated water -

Stages 1,2 and 3 open* ~ 500 to 50 psig Minimum flow resistance from bottom of simulated. Maximum supply tank Stages 1,2 and 3 opan ~ 500 to 50 psig flow / minimum quality for

- Stages 1 and 2 open* ~1200 to 100 psig and uench an

  • Quench tank water

- Stage 2 open* ~ 2235 Esig initially at 212 F a

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i AUTOMATIC DEPRESSURIZATION SYSTEM PHASE B TEST ANALYSIS PLANS .

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+iihigj ADS PHASE B PRETEST ANALYSIS PLANS _

- WCOBRA/ TRAC and NOTRUMP will be used to model the ADS Phase B Tests

. Pretest Calculations:

To verify that the tests will produce data in void fraction, mass flow, and quality range of AP600 plant calculations Will be preformed this quarter (by end of March 1994)

. A comparison plot of mass flow versus quality will be produced for the test matrix Will compare test facility and plant calculations

- Responds to NRC RAl 952.27 79

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ADS PHASE B POST TEST ANALYSIS PLANS .

- Phase B Tests will be modeled with both WCOBRA/ TRAC and NOTRUMP Verify single phase pressure drop and pressure distribution behavior Confirm system response and choke points Verify two-phase critical flow models for valves and sparger Verify two-phase pressure drop and pressure distribution in valve package and discharge line

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SUMMARY

J.C. BUTLER ADVANCED PLANT SAFETY AND LICENSING i

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ADS - ACTIONS FROM 12/22/93 SENIOR MANAGEMENT MEETING .

- Meet with NRC Technical Staff in January to Discuss Phase B Test

- This meeting

- W Will Provide NRC Letter Report by 2/15/94 Identify major changes to SSAR to delete reference to specific ADS valve types Provide LOCA analysis results Provide a PRA evaluation

- Outline Phase B testing plans

- Meet With NRC Technical Staff After Submittal of Letter Report.

- Scheduled for 2/22/94 9

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