Research Article

PACTEL and PWR PACTEL Test Facilities for Versatile LWR Applications

Table 2

PACTEL experiments, examples on performed experiment types.

Experiment typeSpecific focusesRelated NPP

Small break loss of coolant accident (SBLOCA)Natural circulation, steam generator behaviour, feed and bleed proceduresVVER-440
Stepwise coolant inventory reduction (SIR)Natural circulation, ISP-33 caseVVER-440
Primary to secondary leakage (PRISE)Multiple-tube ruptureVVER-440
Anticipated transient without scram (ATWS)Natural circulation with reduced primary inventory, maximum pressure while inadvertent control rod withdrawalVVER-440
Pressure and heat loss experimentsFacility characterizationVVER-440
Loss of secondary feedwater (LOF)Deterioration of heat transferVVER-440
Improved accident management (IMPAM)Starting of depressurization during SBLOCAVVER-440

Passive safety injection, core make up tank (CMT) behaviourBreak size and location effect, CMT position effectAPWR
Passive heat removal system behaviourStart up of natural circulation and long term coolingVVER-640
Thermal stratificationHot and cold water stratification effect on thermal loadsā€”
Dissolved noncondensable gasesEffect of noncondensable gases on system thermal-hydraulics and heat transfer in steam generatorsā€”