Skip to main content

Two-phase flow water hammer transients and induced loads on materials and structures of nuclear power plants

Objective

In NPPs water hammers occur due to an inflow of sub-cooled water into parts of the equipment filled with steam. Relevant scenarios are: Actions such as start-up o f systems, switch-over from one component to another, activation of safety or auxiliary systems, transients with activation of emergency core cooling or feed water systems. The proposal aims at improved and innovative tools and methods for maintaining and improving the safety by achieving an accurate prediction of the loads on equipment and support structures of NPP. This includes evaluation of existing results on steam condensation in contact with sub-cooled water, new experiments with an innovative two-phase flow instrumentation, scaling studies, improved condensation models and validation of thermal hydraulic codes, new experiments on dynamic stresses in component walls with a complex geometry, and the qualification of fluid-structure interaction models to predict the loads.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

UNIVERSITE CATHOLIQUE DE LOUVAIN
Address
2,Place Du Levant 2
1348 Louvain-la-neuve
Belgium

Participants (10)

COMMISSARIAT A L'ENERGIE ATOMIQUE
France
Address
Ctr Etudes De Grenoble - Ce-g
38041 Grenoble
ELECTRICITE DE FRANCE SERVICE NATIONAL*
France
Address
Site Des Renardières, Route De Sens, Ecuelles
77818 Moret Sur Loing
EMPRESARIOS AGRUPADOS INTERNACIONAL SA
Spain
Address
Magallanes 3
28015 Madrid
FRAMATOME ANP GMBH
Germany
Address
Freyeslebenstrasse 1
91058 Erlangen
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Germany
Address
3,Osterfelder Strasse 3
46047 Oberhausen
IBERDROLA SA
Spain
Address
8,Hermosilla 3
28001 Madrid
JOZEF STEFAN INSTITUTE
Slovenia
Address
Jamova 39
1001 Ljubljana
KFKI - ATOMIC ENERGY RESEARCH INSTITUTE - HUNGARIAN ACADEMY OF SCIENCES
Hungary
Address
Konkoly-thege Ut 29-33
1525 Budapest
RESEARCH CENTER ROSSENDORF
Germany
Address

01314 Weissig - Dresden
TRACTEBEL SA
Belgium
Address
Place Du Trône 1
1000 Bruxelles