Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

11th QUENCH Workshop Forschungszentrum Karlsruhe

WELCOME

Werner ScholtyssekForschungszentrum Karlsruhe GmbH

Programme Nuclear Safety Research (NUKLEAR)

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

The „Helmholtz-Gemeinschaft“ (HGF)

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

Research Areas at Forschungszentrum Karlsruhe

Structure of Matter

Energy

FissionFusion

BtLHydrogen

Geothermal

Nano, MicroMed

50 % 33 %

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

Research Area „Energy“ at Forschungszentrum Karlsruhe

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

Programme Nuclear Safety Research (NUKLEAR)

Safety of Nuclear Reactors: Study and evaluation of existing nuclear reactors with respect to

• Design basis accidents and severe accident phenomena • Analysis of accident sequences • Radiological consequences

on the basis of advanced R&D work

Safety of Nuclear Waste Disposal: Study and examination of concepts of

• Characterization and immobilization of nuclear waste • Reduction of radiotoxicity (including P&T) • Safety barriers for repositories • Radiation research

to guarantee the long-term safety of nuclear waste disposal

Maintenance of Competence and Education 11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

Safety Research for Nuclear Reactors Investigations on severe accident phenomena

QUENCH: Investigations on fuel rods during reflood

LIVE: Phenomena of core melting and in-vessel corium relocation

DISCO: Molten corium dispersion

COMET: Molten corium concrete interaction and coolability

Hydrogen: Behaviour of hydrogen in the reactor system

Objectives:

• Evaluation of safety margins

• Reevaluation of SAM measures

• Contribution to a common knowledge

base (ASTEC)

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

Alliance for Competence in Nuclear Technology Foundation due to initiative of BMWA Evaluation Commission (2000)

Objectives: Coordination of Nuclear Safety Research in Germany Definition of research topics Quantification of staff required

Additional Members:

Federal Ministries BMBF, BMU, BMWA

Project Agencies PT-R, PTWt+E

BGR, ITU, MPA

German utilities

ForschungszentrumKarlsruhe

Alliance for Competence in Nuclear Technology

ForschungszentrumJülich

ForschungszentrumRossendorf

TU DresdenFH Zittau/Görlitz

GRS

TU München

TU KarlsruheUniv. Stuttgart

Univ. Heidelberg

RWTH AachenFH Aachen/Jülich

+ +

++

WGL

ForschungszentrumKarlsruhe

Alliance for Competence in Nuclear Technology

ForschungszentrumJülich

ForschungszentrumRossendorf

TU DresdenFH Zittau/Görlitz

GRS

TU München

TU KarlsruheUniv. Stuttgart

Univ. Heidelberg

RWTH AachenFH Aachen/Jülich

+ +

++

WGL

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Decision for phase out of nuclear use for commercial electricity production but

• nuclear electricity is 30 % of total• economical and environmental aspects• new government and, in any case

• safety of existing plants must be guaranteed during next two decades

Nuclear Power in Germany

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Growing energy demand while• fossil resources become expensive • potentials of renewables are limited• fusion is far away therefore

• bright future for nuclear as a quasi sustainable energy source• for electricty, heat, desalination, hydrogen

Nuclear Power worldwide

Gen 3+, Gen IV

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Energy demand worldwide

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Increased safety requests for future nuclear technology, e.g. Generation IV nuclear energy systems• operations will excel in safety and reliability. • will have very low likelihood and degree of reactor core damage. • will eliminate the need for offsite emergency response.

Next generation nuclear reactors

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

National and international projects – e.g. OECD-MCCI -

could not demonstrate melt coolability outside the RPV.

„The case of basemat penetration“

Therefore, in future reactors core catcher would be needed, e.g. COMET or melt retention, cooling, stabilisation is to be demonstrated within RPV

Second option needs better understanding of late core degradation phenomena, evaluation of coolability of partly degraded cores modeling of related phenomena for PSA

Experimental basis projects like QUENCH, LIVE

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

Experimental basis - QUENCH, LIVE

Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft

11th QUENCH Workshop, Forschungszentrum Karlsruhe, 25-27. 10. 2005

11th QUENCH Workshop Forschungszentrum Karlsruhe

Welcome again and best wishes for a successful

meeting!

Werner ScholtyssekForschungszentrum Karlsruhe GmbH

Programme Nuclear Safety Research (NUKLEAR)