Community Research and Development Information Service - CORDIS


WAHALoads Project: Two-Phase Flow Water Hammer Transients and Induced Loads on Materials and Structures of Nuclear Power Plants

Project ID: FIKS-CT-2000-00106
Funded under: FP5-EAECTP C


The project aimed at the elaboration of improved and innovative tools and methods for maintaining and improving the safety of existing reactor installations. The global objective was to predict the loads on equipment and support structures, which are caused by water hammers and shock waves. In particular, the following goals were set:
- review, evaluation and selection of existing experimental data;
- supply of new experimental data on water hammer using innovative two-phase flow instrumentation and including the measurement of loads on supports;
- supply of new experimental data on dynamic stresses in equipment walls;
- quantification of scaling effects by evaluating tests in different scales;
- development of new as well as improvement of existing condensation models to increase accuracy of thermal hydraulic modelling for water hammer calculations;
- development of a new 1D two-phase flow code for water hammer and shock wave transients in piping networks;
- validation of thermal hydraulic models including the new computer code for condensation-induced water hammers and shock waves in two-phase flows;
- qualification of 1D and 3D computational tools for the analysis of the structural response including fluid-structure interaction and validation of complex response models.

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