Lappeenrannan-Lahden Teknillinen Yliopisto LUT
Lappeenranta-Lahti University of Technology (LUT) is the leading educator of energy sector professionals in Finland. The LUT Nuclear Engineering Laboratory has been building and operating nuclear safety related thermal hydraulics facilities since 1974. Large–scale nuclear safety experiments in LUT cover VVER and PWR reactor system thermal-hydraulics (the REWET facility series, and PACTEL and PWR-PACTEL facilities), BWR containment thermal-hydraulics and dynamics (the PPOOLEX facility), and core catchers for severe accident management. Recently, the LUT Nuclear Engineering Laboratory has completed construction of PASI, a half-height large model of a Passive Containment Wall Cooler, with funding from the Finnish National Nuclear Safety Research programme SAFIR2018. Construction of the next-generation nuclear system thermal-hydraulics facility MOTEL (for Modular Test Loop) is ongoing, with project NextGenTH funded by the Finnish Academy of Sciences.
The LUT Nuclear Engineering Laboratory has a long track record in successfully testing at various scales individual components and processes that have been proposed for backfitting in the Finnish nuclear power plants; in such tests, the facility infrastructure is utilized.
In APAL, LUT contributes to the project activities of WP1 and WP2. Under WP1, LUT will help identify and gather available experimental TH data for PTS – usable for validation of TH computer codes. In WP2, LUT will lead task 2.1 where the impact of LTO improvements and human factor on TH analysis boundary conditions will be quantified. LUT will use CFD (OpenFOAM) in TH analysis related to PTS phenomenology itself and to LTO improvements. LUT also contributes to the code uncertainty assessment using insights gained in the project. LUT will also take part in preparation of the best-practice document (WP5). Like all partners, LUT contributes also to WP6 and WP7.