A Saxony collaboration consisting of the Institut fur Sicherheitsforschung of the Forschungszentrum Rossendorf (FZR) e. V., the University of Dresden (TUD) and the Hochschule fur Technik, Wirtschaft und Sozialwesen Zittau-Gorlitz (HTWS) are going to take over the NOKO facility, which will be reconstructed as TOPFLOW (Transient Two Phase Flow Test Facility) at FZR. TOPFLOW will mainly be used for the investigation of generic and applied steady state and transient two-phase flow phenomena in power and process industries. Main fields of activities are the investigation of:

— transient flow regimes in horizontal, vertical and inclined tubes,

— critical mass flows and oscillations during depressurization,

— natural convection in parallel channels and feed pipes,

— condensation phenomena in horizontal tubes,

— dynamic behaviour of interphase area in bubble columns,

— non-equilibrium effects.

The philosophy of the facility is, that working groups throughout Europe shall be invited to come to Rossendorf with their ideas and to perform their experiments here making use of the wide range of parameters (power, water and steam mass flow, pressure range, measuring instrumentation) offered by TOPFLOW.