ML20128G579
| ML20128G579 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 02/05/1993 |
| From: | Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Borchardt R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19303F289 | List: |
| References | |
| AW-93-408, NUDOCS 9302160048 | |
| Download: ML20128G579 (71) | |
Text
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. Westinghouse Energy Systems kn 355 R"'.ouc Pennsysama 15730 0355 Electric Corporallon AW.93-408 February 5,1993 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 ATTENTION: MR. R. W. BORCHARDT AFPLICATION FOR WITil110LDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE
SUBJECT:
SLIDES FROM Tile FEBRUARY 5,1993 NRC MEETING ON AP600 VALVES
Dear Mr. Borchardt:
The application for withholding is submitted by Westinghouse Electric Corporation (' Westinghouse")
pursuant to the pmvisions 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-92 408 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 10CFR Section 2.790 of the Commission's regulations.
Correspondence with respect to this application for withholding or the accompanying affklavit should reference AW-93-408 and should be addressed to the undersigned.
Very truly yours, f
UJ r
N. J. Liparuto, Manager Nuclear Safety And Regulatory Activities
/nja cc:
M. P. Siemien Office of the General Counsel, NRC i
L. Barnett NRC (12H5) 0779A 9302160048 930205 PDR ADOCK 05200003 A
COPYRIGIIT 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 to CFR 2.790 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection not withstanding. With respect to the non proprietary versions of these reports, the NRC is permitted to make the number of copics 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, D.C. and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. The NRC is not authorized to make copies for the personal use of members of the public who make use of the NRC public document rooms. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.
03 NA a
PitOPittl?I'AltY INI'OllMATION 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 10CFR 2.790 of the commission's regulation 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 on the brackets remain, the information that was contained within brackets and where the proprietary information has been deleted in the non-proprietary versions only the brackets remain, ti.e 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) contained within parentheses 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 Section (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this transmittal pursuant to 10CFR2.790(b)(1).
0310 A
- AW 93-408 AFFIDAVIT COMMONWEALTil OF PENNSYLVANIA:
ss e
COUNTY OF ALLEGilENY:
Before me, the undersigned authority, personally appeared Peter J, Morris, who, being by me duly sworn according to law, deposes and says that he is authorlied 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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Peter J. Morris, Manager Strategic Safety and Regulatory Issues Sworn to and subscribed before me this P day of Ya/he
.1993 6
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Notary Public,
NotwW&d trnainn M FN*~M&Mry Pubic Morma,tbo A1CTtayCcuny W C(Neon Emres Dr 14.1995 Menta,Purrsyuu Aaugm o,%m 0160A
AW.93-408 (1)
I am Ma.:ager, Strategic Safety and Regulatory issues, in the Nuclear and Advanced Tecnnology 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 authori/ed 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 perstmal 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 Seehon 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 helu.a confidence by Westinghouse.
(ii)
The infortnation 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 corfidence 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 coni dence 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-93-408 (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 licerse 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.
(d)
It reveals cost or price information, production capacities, budget levels, or 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 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.
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AW-93-408
-(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 puule, thereby depriving Westinghouse of a competitive advantage.
(c)
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 rescarch 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 10CFR Section 2.790, 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.
(v)
Enclosed is letter ET-NRC-93-3816, February 1993, being transmitted by Westinghouse Electric Corporation (E letter and Application for Withholding Proprietary information from Public Disch>sure, N. J. Liparuto (E, to Mr. R. W. Borchardt, Office of NRR. The proprietary information as submitted for use by Westinghouse Electric Corporatien 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 justification of licensing advanced nuclear power plant designs.
i 0780A
AW 93 408 l
This information is part of that which will enable Westinghouse to:
(n)
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.
(c)
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 Inwer 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.
0^1%0A
AW 93 408 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, woad have to be expended for developing analytical methods and receiving NRC approval for those methods.'
Further the deponent sayeth not.
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Westinghouse /NRC Meeting'on AP600 Valves
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Presentation Material 11 l
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February 5,1993 -
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NRC/ WESTINGHOUSE VALVEWEETING FEBRUARY;5,1993_ ' _
AGENDA
- 1. INTRODUCTION Butler Hasselberg (NRC)
- 2. PASSIVE SYSTEMS OVERVIEW Schulz
- 3. MOTOR-OPERATED VALVES
(")
- 4. AIR-OPERATED VALVES
(**)
- 5. CHECK VALVES
(")
- 6. SQUlB VALVES
(")
- 7. CONCLUSION / DISCUSSION all
(**) PRESENTATION MATERIAL FOR EACH VALVE TYPE'
- System Applications Schulz
- Valve Functional Requirements Schulz
- Valve Design Information Vock
- Valve Testing Information Fanto
- Miscellaneous Questions As required I
-AP300 SYSTEMS DESIGN Greatly Simplify Systems to Improve Safety, Cost, Construction, Maintenance, & Operation Provide. Simple Passive Safety Systems L
Use " natural" driving forces only One-time alignment of active valves No support systems after actuation Reduced operator dependency Provide Non-Safety Systems Reliable active equipment for normal operation "First line of defense"; redundant active
^
equipment powered by on-site non-safety diesels Reduced use of passive safety systems
-Reduced risk to utility & public lierative Design Development Safety analysis studies Risk and severe accident analysis studies Plant arrangement an'd modularization studies TL.: - ;/2/U 2L
= -
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..AP600 SAFETY SYSTEMS 1
Provide Passive Safety Systems Greatly simplified considering construction, maintenance, operation, ISI / IST Mitigate design basis accidents without use of NNS systems Meet NRC safety goals without NNS sys (EPRI)
Meet EPRI safety goals with NNS systems Safety Systems Design Features Only passive processes; no " active" equipment Significant design margins Redundancy to meet single failure criteria PRA based redundancy / diversity Greatly reduced need for operator actions Safety Equipment Design Features Reliable / experience based equipment Improved inservice testing / inspection Reg Guide 1.26 Quality Group A, B, or C Seismic I design Qualified Equiprnent Availability controlled by Technical Specifications with shutdown requirements Reliability Assurance Program Tier I description and ITAAC
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____?__________-___-_ _ _-__-___ - _
1AP600 PASSIVE SAFE 7Y FEATURES Passive Decay Heat Removal Natural circulation HX connected to RCS Passive Safety injection N2 pressurized accumulators Gravity drain core makeup tanks (RCS pressure)
Gravity drain in-containment refueling water storage tank (containment pressure)
Automatic RCS-depressurization Passive Containment Cooling L
Steel containment shell transfers heat:to natural circulation of-air and evaporation of water l
drained by gravity Passive HVAC Compressed air for habitability of main control H
room Concrete walls for heat sink (MCR and I&C rooms)
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llONNET OVERPRESSURIZAT10E i
Eotential Causes:
Pressure in the valve bonnet is trapped when the valve is closed under pressure and pressure in both upstream and downstream piping is relieved or reduced.
Higher then normal pressure can be trapped in the bonnet when the system experiences i
pressure spikes or surges.
Pressure in the bonnet can be increased when the valve is closed full of fluid and then subjected to a thermal transient.
Methods to Reduce OveroressuriZallant
- Drill weep hole in the upstream disc Install external bypass whh a check valve to connect the bonnet cavity to the upstream pipe
- Install relief valve in bypass to sent excessive pressure in the bonnet
- Implement administrative controls to relieve pressure by periodically cycling the valve
References:
NRC Information Notice No.: 92 26 " Pressure Locking of Motor Operated Flexible Wedge Gate Valves" 21
Al 1 OPERA ~~ED VALVES Special Applications ADS Stage 4 Core Makeup Tank isolation PRHR HX Control TL * - 2 / 3 / M 2 ?>
ADS VALVES - S AGE 4 Functional Requirements Normally Isolate RCS from Containment Automatic RCS Depressurization
,_ Valve Characteristics,,,
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CMT SOLATION VA_VES 4
Functional Requirements Normally Isolate CMT from RCS Initiate CMT In;ection Valve Characteristics e, c_
r-Valve Actuator Air-Operated Diaphragm Normally Closed' Fall Open Sized for Limited DP Valve Actuation SI, Low Pzr Level, and Low SG Level Valve Testing
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CONTROL VALVE DATA SHEET NO: CT 004 ORAFT Plant:
System:
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Description:==
Tag Number (s) 1 AP600 PXS CMT Inlet Isolation V002A,B; V003A,B
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Rev: 5 Date: 01/31/93 Page 1 of 3 r-weia n o.
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CONTROL VALVE DATA SHEET NO: CTo004 l
Hant:
System:
==
Description:==
Tag Number (s)
DRAFT AP600 PXS CMT Inlet Isolation V002A,B: V003 A,8 R. C.
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Rev: 5 Date: 01/31/93 Page 2 of 3 enna c:.*u n e e pu.c e wshvu m.
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CONTROL VALVE DATA SHEET NO: CT 005 Plant:
. System:
==
Description:==
Tag Number (s)
DRM AP600 PXS CMT Ou$et isolation V014 A,B; V015A B
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Rev: 5 Date: 01/31/93 Page 1 of 3 Pnnted- 01(49108 33.M hiefMLl4LAAVAl%TT4 \\\\ *
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CONTROL VALVE DATA SHEET NO: CT-005 Plant:
System:
==
Description:==
Tag Number (s)
DRAFT AP600' PXS CMT Outlet isolation V014A,B: V015A,B 9,t F
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Rev: 5 Date: 01/31/93 Page 2 of 3 nowemuneo ni,c w n w u u n w m Ih
l 3 9'- 9 -X CONTROL VALVES Functional Requirements Normally Prevent RCS Flow Initiate PRHR HX Flow Provide Nonsafety Throttling Capability Valve Characteristics
-qg Valve Actuator Air-Operated Diaphragm with Positioner Normally Closed, Fail Open Operator Sized for Limited DP Valve Actuation Low SG Level, ADS, and High SG Level
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TLJ - 2/3/43 37
i CONTROL VALVE DATA SHEET NO: CT=006 Plant:
System:
==
Description:==
Tag Number (s) j f
AP600 PXS PRHR HX Control V008A,B 9,t I
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-CONTROL VALVE DATA SHEET NO: CT 006 i
Plant:
'" ystem:
==
Description:==
Tag Number (s)
S DRAFT AP600 PXS PRHR HX Co.ntrol V008A,8 AA M
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a CHECK VALVES Special Applications IRWST Injection CV Containment Recirculation CV Core Makeup Tank Discharge CV Core Makeup Tank Pressurizer CV 4
TLG - 2/3/93 40
- IRWST INJECTION CV:
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o Functional Requirements Normally Prevent RCS: Leakage to IRWST Open for IRWST Injection After ADS Valve Characteristics Simple Swing Check Design No Dampers / Actuators No Body Penetrations c
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CHECK VALVE DATA SHEET NO: CK-001
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Plant:
System:
.Descriptio'n.:,,
Ta'g Number (s)
AP600 PXS.... JRWSLlojection.
V122A,B, V123A,B, V124 A,B, V125 A,8 p
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I Rev: 0 Date: 01/31/93 Page 1 of 2 Pnntet 02,%H os 23-to Ble CN\\LPitAfWALVES47% A t/ 2.
CHECK VALVE DATA SHEET NO: CK 001 DRAFT Plant:
System:
==
Description:==
Tag Number (s)-
AP600 PXS IRWST Injection -
V122A,B, V123A,B, V124A,B, V125A,8 V-W L--,
Rev: 0 Date: 01/31/93 Page 2 of 2 Na cuam 45 ::
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I CONTAINMENT RECIRC CV i
Functional Requirements Prevent Draining of IRWST to Containment Open for Recirculation from Containment Valve Characteristics Simple Swing Check Design No Dampers / Actuators No Body Penetrations Valve Testing
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CHECK-VALVE DATA SHEET NO::- CK-002 Plant:~
System: ~
Description:
Tag Number (s).-
Oggg7 AP600
-PXS Containment Recirc V119A,B,V120A,8-4 H,C.
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CHECK VALVE DATA SHEET NO: CKc002 Plant:
System:
==
Description:==
Tag Number (s)
Ogg APS00 PXS Containment Recire V119 A,B, V120A,B
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CMT DISCHARGE CHECK VALVES Functional Requirements Normally Stay Open Close to Prevent Gross Accumulator Backflow Through CMT During Cold Leg Break or Balance Line Break Valve Characteristics 7 q'c i
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Valve Testing q,c r-l l'
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CHECK VALVE DATA SHEET NO: CK-004 Plant:
System:
==
Description:==
Tag Number (s)
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DRAFT
.AP900 PXS CMT Injection iV016A,B, V01[,B f-4,C a
Rev: 0 Date: 01/31/93 Page 1 of 2
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CHECK VALVE DATA SHEET N6i"Ck-004 ~
Plant:
System:
Descript.i.on:
Tag Number (s)--
k6d0 P X S '". * 'CMT Injection V016A,B, V017A,B -.
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Rev:0-Date: 01/31/93 Page 2 of 2 -
Prmisd: Oto4M 08 28:10
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b CMT1PZR LINE CV Functional Requirements
.Normally Pass Steam Condensate to CMT
-Steam Trap Close to Prevent Gross CMT Backflow to Pzr During Pzr. Pressure Balance Line Break or ADS Valve Characteristics Simple Swing Check Valves No Dampers / Actuators:
No Body Penetrations
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Valve Testing.
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CHECK VALVE DATA SHEET NO: CK-005 N
Plant:
System:
==
Description:==
Tag Number (s)
_ DRAFT j
N AP600 PXS CMT Pressure Balance V006A,8; V007A B A,C 4
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Rev: 0 Date: 01/31/93 Page 1 of 2 Pnnted 0104H 04.28.10 Fil.c;meNALVT.54 Ks A SI
l CHECK VALVE DATA SHEET NO: CK-005 Plant:
System:-
==
Description:==
Tag Number (s) t DRAFT
-AP600 r,.S CMT Pressure Balance V006A B; V007A.B 1
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O A3300 CH ECK VA_VES o
Current PWRs Use Check Valves in Similar Service RCS chemistry Stainless steel with stellite seats Infrequent use, normally closed o
Well Designed, Simple Check Valves Are Reliable in Nuclear Power Plant Service Search of NPRDS failure records (1984 to 90) indicate 4500 check valve failures Of these only 87 were failures to open None of the failures was for a check valve with similar conditions to the IRWST valves No indication of boric acid corrosion or self welding was found o
Check Valve Testing Performance tests show AP600 IRWST injection and recirculation check valves perform well Further testing is being discussed to determine if in plant testing could be conducted to determine if corrosion bonding or other sticking failures would occur at IRWST opening pressures C3
PW9 C-ECK VALVE FAlLURE OBS E RVAT ONS 0
Most check valve failures occurred due to mechanical / wear damage (not applicable to AP600 j
valve application) o No failures to open due to corrosion observed for stainless steel valves o
No failures to open due to foreign debris in water service for stainless steel valves 6
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A 3SDC C H EGK VAbVE ~~-ES-~
o Verify hydraulic performance of swing check valve (provide valve design feasibility information)
Opening differential pressure Differential pressure over the expected valve flow rate with prototypic valve arrangement o
Develop a qualification plan Contract Penn State University to review existing check valve data-o Utility participation Have contacted 5 utilities about the possibility of testing existing check valves
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DISC ARM s
I DISC HARDFACING (SEAT RING & DISC) / BODY Swing Check Valve Assembly Figure.4.1 -3_g -s7 L sI
tr. -g-y 3 T C O O _E if^s 1.- Body N 3.- Of:c TR 4 Main Flange Gesket l \\ s 5. Bonnet. \\ \\ n 6. Disc Arm i s N 1 Antiroation Pin - \\ N-o r Pin
- 10. Pivot Pin' k.-
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- 11. Bearing Blo:k 4
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- 12. Main Flange Stud
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- 13. -Main Flange Nut
- 17. Lock Pin 8
O .g. N o e e P e o n SwingCheckValve(ExplodedView) Figure 4.2 - 4 SC-
.. _ = _. SQUlBiVALVES ~ ~ :': L.,,,,,,,,, _ _,..,,,,,,,,,,,,, _ Special Applications pH Tank Outlet Isolation 1 1 j i I l TLJ - 2/3/93 1 4 9cm
pH ADJ TANK SQUlB VALVES Functional Requirements Normally Prevent Leakage of NaOH from pH Tank into Containment Initiate pH Tank Discharge Valve Characteristics s,t .J l l Valve Actuator , 9,t l Ram Assembly Shears Inlet Fitting l Valve Actuation l High Containment Radiation Valve Testing c ~ TL3 - 2/3/91 60
AP600 PROPOSED EXPLOSIVE SQUIB VALVE VENDOR CONAX CORPORATION EXAMPLE DRAWING 7048-1700 1 1832 421 ASME CODE CLASS 1 MATERIAL SS 304 i I I j e ) ! .j .3 i y e# a sud os 1 mm l l I e i a l I c .-}}