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EUR volume 3 AES 92 subset Yury ERMAKOV, RosEnergoAtom Olivier ROUSSELOT, EDF European Utility Requirements for LWR nuclear power plants EUR seminar 2005 13/12/2005
EUR volume 3 AES 92 subset
Yury ERMAKOV, RosEnergoAtomOlivier ROUSSELOT, EDF
European Utility Requirementsfor LWR nuclear power plants
EURseminar
200513/12/2005
EUR seminar 2005 12-2005 page 2© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
key points of the presentation
� Presentation of AES 92 design� Main results of AES 92 assessment � Status of subset chapters� Next steps
EUR seminar 2005 12-2005 page 3© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
the AES 92 designas licensed by RF GAN for Novovoronezh-2 NPP in 1999
EUR seminar 2005 12-2005 page 4© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Overall layout of an AES-92 NPP with a VVER-1000 Reactor
EUR seminar 2005 12-2005 page 5© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Federal State Unitary Enterprise EDO «Gidropress»
Federal State EnterpriseRussian Scientific Center
«Kurchatov Institute»
Federal State Unitary Enterprise Research, Design and Engineering Survey Institute «Atomenergoproekt»
Main developers of the AES 92 project
EUR seminar 2005 12-2005 page 6© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
AES 92 Development
� USSR Governemt regulation for improving NPP safety - 1987� AES 92 design for REA Novovoronezh-2 NPP in Russia
◆ Construction license by RF Gan on April 12, 1999◆ Design approval by Minatom on December 30, 1999
� AES 92 design for NPCIL Kundankulam NPP in India◆ Construction license by Indian AERB on March 22, 2002◆ First concrete: unit 1: March 2002
unit 1: July 2002◆ Physical progress achieved (as on October 2005): unit 1 = 61%
unit 2 = 52% ◆ Scheduled date of criticality: unit 1: 2007
unit 2: 2008
EUR seminar 2005 12-2005 page 7© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
The safety concept: systematic implementation of diversity for all safety functions
EUR seminar 2005 12-2005 page 8© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
AES 92 design: main systems
EUR seminar 2005 12-2005 page 8© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
AES 92 design: main systems
The main active safety systems:� Active emergency core cooling + containment spray
(pumps + ejectors, 4 trains)� active heat removal from steam generator
(active steam condenser)� active annulus ventilation system
EUR seminar 2005 12-2005 page 8© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
AES 92 design: main systems
The main passive safety systems:� Hydroaccumulators stage 1
(compressed gas driven)� Hydroaccumulators stage 2
(gravity driven)� Passive heat removal from steam generator
(passive steam condenser)� Passive annulus filtration system� Fast boron injection system
EUR seminar 2005 12-2005 page 9© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
AES 92 Containment Outer wall
Reinforced concrete
Metallic liner
Inner wall Prestressed
concrete
Passive filtration system
EUR seminar 2005 12-2005 page 10© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Corium Catcher
Concrete shaft
Housing
Filler
Lower plate
Cantilever truss
EUR seminar 2005 12-2005 page 11© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Main results of AES 92 assessment
EUR seminar 2005 12-2005 page 12© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Partners involved in the AES 92 assessmentEUR partners:EDF:
Mr Olivier ROUSSELOTENERGOATOM:
Mr Vitaly VORONTSOVFORTUM:
Mr Bahey MOHSENIBERDROLA:
Mr Carlos PADILLA ROSENERGOATOM:
Mr Vadim SEMISHINMrs Elena SOLONKO
SOGIN: Mr Alceste RILLI
VATTENFALL/FKA: Mr Johan ANDERSSON
AES 92 Designers:ATOMENERGOPROEKT
Mr Mikhail MALTSEVOKB GIDROPRESS:
Mr Nikolay FILKURCHATOV INSTITUTE
Several experts
EUR seminar 2005 12-2005 page 13© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
first views on volume 3 AES 92 subset
From a preliminary survey of AES 92 compliance analyses:� there is a rather good level of compliance with most of the
requirements of the chapters of the EUR Volume 2, revision C
� in some cases, there is ”compliance with objectives” only◆ Russian Federation specific regulatory context◆ the designer intends to comply in the detailed design phase.
� Only several critical issues identified so far
EUR seminar 2005 12-2005 page 14© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
first views on volume 3 AES 92 subsetCompliance with the EUR objectives:� PSA targets: the results are quite low for the internal
events, thus the EUR objectives are reachable, but most internal and external hazards have not been assessed yet
� Safety classification: OPB88/97 based on different principles than EUR. The safety classified part may be a bit larger than allowed in EUR.
� Primary and Secondary Containment performance: balanced design achievable because of big reserve for optimisation
EUR seminar 2005 12-2005 page 15© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
first views on volume 3 AES 92 subset
Compliance with the EUR objectives (continued):� Fuel & core performance
◆ Average FA Burn-up: 51 MWd/kgHM (55 for EUR)◆ Type of fuel: initially UO2 core, 50% MOX feasible◆ Length of fuel cycle: initially 12 months, but capability for 24
� Codes & standards: use of Euronorms looks possible� HV Grid requirements: comparable voltage-frequency
fields
EUR seminar 2005 12-2005 page 16© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
first views on volume 3 AES 92 subset
Critical issues that may lead to non-compliances:provisional list; will be further examined for the next few weeks� Plant autonomy beyond 24 hours in case of LOCA + SBO� Spent fuel storage capacity� Refuelling & regular maintenance outage duration� External events: level of Design Basis Earthquake� Reactor vessel design life� I&C and Man-machine interface� Overall construction time
EUR seminar 2005 12-2005 page 17© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
Status of the AES 92 subset chapters
EUR seminar 2005 12-2005 page 18© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
EUR Volume 3 AES 92 subset Status of the chapters
� Chapter 3.1 AES 92 Plant Description◆ November 2005 version available within EUR Organisation
� Chapter 3.2 Highlights of the analysis of compliance◆ detailed assessment of compliance being finalised◆ synthesis reports to be approved by EUR SC tomorrow◆ list of the highlighted topics to be finalised before March 2006
� Chapter 3.3 Specific requirements◆ If requested during SC review
No text released outside the EUR Organisation so far
EUR seminar 2005 12-2005 page 19© BE, EDF, FKA, Fortum & TVO, IBERDROLA, NRG, REA, SOGIN, swissnuclear, TBL, VGB Power Tech 04/2005
EUR Volume 3 AES 92 subset Next steps
� EUR Harmonisation Review on March 13-15, 2006◆ Cross checking of AP1000, AES 92 & EPR assessments◆ Revision of the AP1000 and AES92 assessments where needed to ensure consistency
� EUR SC#66 on March 23 & 24, 2006◆ Green light for release of Volume 3 AES 92 subset
� Finalisation of the text, preparation of the published version (paper and electronic)
� Volume 3 AES 92 subset distribution◆ possibly from June ’06
European Utility Requirements for future LWR plants
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