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ROCOM experiments on the coolant mixing in the upper plenum of a PWR

Kliem, S.; Prasser, H.-M.; Grunwald, G.; Höhne, T.; Rohde, U.; Weiß, F.-P.

The reactor core of light water reactors consists of fuel elements with different enrichment and exposure. This circumstance is responsible for differences in the heat release of the single fuel elements. As a consequence, the fuel element outlet temperatures differ, too. Differences of more than 30 K are reached in the stationary state at full power. It is known, that these differences in the outlet temperatures do not fully vanish during the travelling of the coolant through the upper plenum. Thus, a certain temperature profile is still existing over the cross section of the hot leg nozzle. In order to study the coolant mixing inside the upper plenum, special tests have been carried out at the test facility ROCOM (Rossendorf Coolant Mixing Model).

  • Lecture (Conference)
    Jahrestagung Kerntechnik, Berlin,20.-22.Mai 2003, Proceedings pp. 73-76
  • Contribution to proceedings
    Jahrestagung Kerntechnik, Berlin,20.-22.Mai 2003, Proceedings pp. 73-76

Permalink: https://www.hzdr.de/publications/Publ-5110