Hydrostatic Level Measurement Test Facility

Investigations on hydrostatic level measuring systems where the reference level is represented by the water/vapor phase boundary in a slightly inclined miniature tube (Zero Chamber Level Vessel, ZCLV). The experiments aim at analyzing the stability of the reference level at Boiling Water Reactor parameters (T = 286 °C, p = 70 bar) for different boundary conditions:

  • Inner tube diameter (via adapters)
  • Inclination angle (via an inclinable desk)
  • Weldments at the junction of miniature tube and large-volume vessels
  • Presence of non-condensable gases


Since the gas/liquid interface is very sensitive towards mechanical influences, in cooperation with the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the completely non-invasive x-ray radiographic imaging technique is applied for visualizing the phase distribution. The experimental data are used for:

  • Analysis of transition processes in ZCLV and their dependence on geometric constraints
  • Characterization of the impact of dynamic transitions (e.g. draining of excess condensate mass, dissolution of non-condensable gases) on the hydrostatic level measuring system
  • Generation, improvement and validation of the CFD code ANSYS CFX 12

Lab supervisor

Sören  Alt

Lab supervisor IPM

Haus VIIc / Raum 2

+49 3583 612-4879

+49 3583 612-3449
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