Research
Since year 1975 experimental studies of the nuclear reactor
thermal hydraulics has been carried out at Lappeenranta
University of Technology in cooperation with VTT.
The Nuclear Safety Research Unit has or had have also several
itegral and separate effect test facilities. We have good
readiness to construct new facilities. With separate effect test
facilities we have carried out experiments for power companies
and for power plant suppliers.
The following phenomena or situations have been
studied with our facilities
- rewetting
- reflood
- natural circulation in VVER-440 geometry
- small break loss of coolant accidents
- loss of steam generator feed water
- gravity driven ECC
- CCFL
- primary to secondary leakages
- ATWS
- behavior of boric acid
- temperature stratification
- behavior of non-condensable gases in primary circuit
- remove of decay heat in VVER-640
- accident management of BWRs
- accident management of EPR
We have also potentials for thermal-hydraulic and fluid
dynamic safety analyses of transient and accident phenomena with
available codes.