Modelling of PKL test facility with TRACE code
Tahvola, Ilkka (2018)
Diplomityö
2018
School of Energy Systems, Energiatekniikka
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Julkaisun pysyvä osoite on
http://urn.fi/URN:NBN:fi-fe2018110747614
http://urn.fi/URN:NBN:fi-fe2018110747614
Tiivistelmä
The work goal was to create a TRACE nodalization of the PKL nuclear power plant thermal hydraulics test facility and validate the model heat and pressure losses by calculating reference cases. The second goal was to calculate a natural circulation case to test the model functioning. The PKL test facility replicates a 1300 MW pressurized water reactor that has elevations scaled with 1:1 ratio. The reactor power and volumes are scaled down with 1:145 ratio.
The TRACE nodalization model was built with good accuracy but some simplifications were done during the geometry modelling phase. These simplifications are described in this thesis. The TRACE model pressure and heat losses were validated in this thesis accordingly to the experimental results. The natural circulation case reached a good accuracy, but more studies should be carried out with the set of improvements that are suggested in this thesis in order to validate this TRACE nodalization model for different operation scenarios.
The TRACE nodalization model was built with good accuracy but some simplifications were done during the geometry modelling phase. These simplifications are described in this thesis. The TRACE model pressure and heat losses were validated in this thesis accordingly to the experimental results. The natural circulation case reached a good accuracy, but more studies should be carried out with the set of improvements that are suggested in this thesis in order to validate this TRACE nodalization model for different operation scenarios.