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CSNI2200 PSB-VVER.

PSB-VVER, Computer code validation for transient analysis of VVER and RBMK reactors project

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1. NAME:  PSB-VVER.
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2. COMPUTERS
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Program name Package id Status Status date
PSB-VVER CSNI2200/01 Arrived 05-JAN-2009

Machines used:

Package ID Orig. computer Test computer
CSNI2200/01 Many Computers
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3. DESCRIPTION

The PSB-VVER project is intended to provide the experimental data needed to allow full validation of the computer codes used in the thermal-hydraulic analysis of VVER-1000 reactors. Currently there are 19 VVER-1000 reactors in operation and several more under construction, mostly in central and eastern Europe. These Russian-designed reactors have design characteristics that are similar to western-designed pressurised water reactors (PWRs). There are however important design differences which necessitate specific experimental facilities and data to ensure that the computer codes are validated and that the results of the thermal-hydraulic analyses are of acceptable quality for this type of reactor. To this end, experiments are to be carried out in a large-scale, thermal-hydraulics facility located at the Electrogorsk Research and Engineering Centre in Russia.
  
Earlier NEA work established a "code validation matrix" for both LWRs and VVERs. This matrix is essentially a set of phenomena and experimental data that is used to validate thermal-hydraulic computer codes. This led to the general conclusion that the VVER-1000 matrix was not complete. Consequently, it was decided to develop an OECD project to obtain the required experimental data not covered by the matrix.
  
The project's objective is to provide the unique experimental data needed for the validation of thermal-hydraulic codes and to support refinements to the safety assessment tools for VVER-1000 reactors. The intended PSB-VVER experiments will constitute a relevant extension of the existing code validation database. The data will be of primary relevance to the VVER-1000 system, but they are also of interest to other types of pressurised water reactors.
  
The intended scope of the project work consists of five PSB-VVER experiments in the following areas:
  
- scaling effects;
- natural circulation;
- small cold leg break loss-of-coolant accidents;
- primary to secondary leak;
- 100% double-ended cold leg break.
  
Extensive pre- and post-test analyses are to accompany the experimental programme throughout the entire experimental series. The possibility of setting up one or more standard problems - either limited to project participants or with broader involvement - will be considered. Three project tests have been successfully carried out and reported upon so far. The test matrix for the remaining part of the programme was discussed and revised by members. The fourth test investigated accidental conditions involving a primary to secondary leak (steam generator header rupture) and was carried out in the first half of 2005. A blind test exercise where the fourth test's outcome will be predicted by calculations before its execution was also organised. The final test will simulate thermal-hydraulic conditions arising after a large-break LOCA in a VVER-1000 reactor, and will be the first one run under these very demanding conditions. A preliminary final test (10% power) was run in January 2008; several attempts for running the final test (full power) were unsuccessful and it was decided to close the Project at the end of 2008 with the agreement that the data of this final test would be provided to the project participants when it would be completed.
  
Project participants:
NRI, Czech Republic
VTT and other organisations, Finland
IRSN, CEA, EDF, France
GRS, Germany
University of Pisa, Ansaldo Energia, Italy
RMINSC, EREC, OCRK, KI, Gosatomnazor, Russian Federation
ANL with DOE supervision and funding, USA
  
Project period: February 2003 - December 2008
  
For more information see http://www.nea.fr/html/jointproj/psb-vver.html
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9. STATUS
Package ID Status date Status
CSNI2200/01 05-JAN-2009 Masterfiled restricted
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10. REFERENCES
CSNI2200/01, included references:
- O.I. Melikhov, V.I. Melikhov, I.V. Parfenov:
PSB-VVER tests priority for the OECD PSB-VVER Project (PSB-VVER REPORT, PSB-01)
- O.I. Melikhov, I.V. Elkin, I.A. Lipatov, G.I. Dremin and S.A. Galchanskaya:
Guidelines for Performance of PSB-VVER Tests (PSB-VVER REPORT, PSB-02)
- O.I. Melikhov  et al.:
Report about PSB-VVER Description (including Measurement System)(PSB-VVER
REPORT, PSB-03)
- Ilya.V. Elkin, George I. Dremin, Igor A. Lipatov, S.vetlana A. Galchanskaya:
Report about PSB-VVER Heat Losses (PSB-VVER REPORT, PSB-04)
- I.V. Elkin, I.A. Lipatov, A.I. Antonova, G.I. Dremin, M.A. Berezutskaya:
Report about PSB-VVER Hydraulic Losses (PSB-VVER REPORT, PSB-05)
- O.I. Melikhov et al.:
Pre-test Experiment Proposal Report (Test 1) (PSB-VVER REPORT PSB-06)
- O.I. Melikhov et al.:
Post-test Quick Look Experimental Data (Test 1)(PSB-VVER REPORT, PSB-07)
- O.I. Melikhov et al.:
Post-test Full Experimental Data Report (Test 1) (PSB-VVER REPORT, PSB-08)
- O.I. Melikhov et al.:
Standard Problem Definition Report (Test 1) (PSB-VVER REPORT PSB-09)
- O. V. Gavritenkova, I. V. Parfenov, O.I. Melikhov, V.I. Melikhov:
Standard Problem RELAP5/MOD3.2 Analysis Report (Test 1) (PSB-VVER REPORT PSB-12)
- O. V. Gavritenkova et al.:
Comparative Assessment Report (Test 1) (PSB-VVER REPORT, PSB-13)
- A.G.Kraev:
Code Maintenance Report (Test 1) (PSB-VVER REPORT, PSB-14)
- O.I.Melikhov et al.:
Pre-test Experiment Proposal Report (Test 2) (PSB-VVER REPORT PSB-10)
- O.I.Melikhov et al.:
Post-test Quick Look Report (Test 2) (PSB-VVER REPORT PSB-11)
- O.I.Melikhov et al.:
Post-test Full Experimental Data Report (Test 2) (PSB-VVER REPORT, PSB-15)
- O.I.Melikhov:
Pre-test Experiment Proposal Report (Test 3) (PSB-VVER REPORT, PSB-16)
- O.I. Melikhov, I.V. Elkin, I.A. Lipatov, G.I. Dremin, S.M. Nikonov, S.A.
Galchanskaya, A.V. Kapustin, A.A. Rovnov, V.I. Gudkov, A.I. Antonova, A.F.
Chalych:
Post-test Quick Look Report (Test 3) (PSB-VVER REPORT, PSB-17)
- O.I. Melikhov, I.V. Elkin, I.A. Lipatov, G.I. Dremin, S.M. Nikonov, A.V.
Kapustin, A.A. Rovnov, V.I. Gudkov, A.I. Antonova:
Post-test Full Experimental Data Report (Test 3) (PSB-VVER REPORT, PSB-18)
- Ilya V. Elkin, Igor A. Lipatov, Alexandra I. Antonova, Sergey M. Nikonov,
George I. Dremin, Andrey V. Kapustin:
Single-phase Performance Characteristics of the PSB-VVER Pump (PSB-VVER REPORT,
PSB-19)
- I.V.Elkin, A.I.Suslov, O.I.Melikhov:
Pre-test Experimental Proposal Report (Test 4) (PSB-VVER REPORT, PSB-20)
- O.I. Melikhov et al.:
Standard Problem Definition Report (Test 3) (PSB-VVER REPORT, PSB-21)
- O.I. Melikhov et al.:
Standard Problem Final Analysis Report (Test 3) (PSB-VVER REPORT, PSB-22)
- O.I. Melikhov et al.:
Post-test Final Analysis Report (Test 2) (PSB-VVER REPORT, PSB-23)
- O.I. Melikhov et al.:
Analytical Exercisse Specification Document
Test 4: Primary to Secondary Leak (PSB-VVER REPORT, PSB-24)
- I.V. Elkin et al.:
Post-test Quick Look Report Test 4 (PSB-VVER REPORT, PSB-25)
- I.V. Elkin et al.:
Experimental Data Report Test 4 (PSB-VVER REPORT, PSB-26)
- O.I. Melikhov, I.V. Elkin, M.P. Gashenko, I.A. Lipatov, G.I. Dremin, A.V.
Kapustin, S.M. Nikonov, A.A. Rovnov, A.V. Basov, V.I. Gudkov, A.I. Antonova:
"Preliminary AE Comparison Report" (Test 4) - July 2005, PSB-27
- O.I. Melikhov, I.V. Elkin, I.A. Lipatov, A.V. Kapustin, G.I. Dremin, S.M.
Nikonov, A.A. Rovnov, A.V. Basov, A.I. Antonova:
"Proposal Report - Test 5: Large Cold Leg Break" (Test 5) - Rev3, 28 Feb. 2007,
PSB-28
- O.I. Melikhov, I.V. Elkin, I.A. Lipatov, M.P. Gashenko, A.V. Kapustin:
"Final AE Comparison Report" (Test 4) - Final, 4 Feb. 2008, PSB-29
- O.I. Melikhov, I.V. Elkin, S.M. Nikonov, A.A. Rovnov:
"Test 5a: Actual Initial and Boundary Conditions" - 14 Feb. 2008, PSB-30
- I.V. Elkin, S.M. Nikonov, A.V. Basov:
"Experimental Data Report - Test 5a" 26 March 2008, PSB-31
- O.I. Melikhov, I.V. Elkin, S.M. Nikonov, A.V. Basov, A.V. Kapustin:
"Final Report - OECD PSB-VVER Project (Version 4)" 31 October 2008, PSB-32
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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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15. ESTABLISHMENT

Poject participants: NRI (Czech Republic); VTT and other organisations (Finland); IRSN, CEA, EDF (France); GRS (Germany); ANL with DOE supervision and funding (USA); RMINSC, EREC, OCRK, KI, Gosatomnazor (Russian Federation).
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16. MATERIAL AVAILABLE
CSNI2200/01
Reports and data for tests 1, 2, 3, 4 and 5
Reports and data for tests 1, 2, 3 and 4
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17. CATEGORIES
  • Y. Integral Experiments Data, Databases, Benchmarks

Keywords: VVER type reactor, matrix.