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The test facility is designed for investigations in the steady-state conditions and in the conditions of thermocycling of thermo-technical characteristics of thermo-mechanical equipment elements, and for testing of isolating and control valves at rating parameters of reactor plants as well.
To perform investigations, two recirculation circuits: primary circuit (heating) and secondary circuit (heated) are available in the test facility.
The primary circuit contains (see also the sketch) an electrical pump, high pressure heaters of the primary and secondary stage (heat-exchangers) and an electric heater for heating the coolant. The secondary circuit system has a jet pump, ejector and water coolers. Each circuit has its own pressurizer.
Both circuits are connected with the tested thermo-mechanical equipment (to the steam generator, for instance).
In the course of the test facility run, the following process mediums are used: superheated steam (pressure – up to 10 MPa, temperature – up to 450 °C, flow rate – up to 4 kg/s), and feedwater (pressure – up to 16 MPa, temperature – up to 170 °C, flow rate – up to 5 kg/s).
The instrumentation and control system enables testing in all conditions required. The automated data acquisition and processing system has 100 measuring channels ensuring registration of thermo-physical parameters with frequency up to 20 Hz.
The test facility ensures testing over the range of operating conditions as follows:
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Primary circuit
Pressure Temperature Flow rate Secondary circuit Pressure Temperature Flow rate |
up to 16 MPa
up to 310 °C
up to 30 kg/s
up to 7 MPa
up to 285 °C
up to 2,5 kg/s |
The schematic diagram of the test facility is represented in the picture.
In 2005-2006, the thermo-hydraulic and thermo-cyclic testing of the full-scale model of steam generator model manufactured by DOOSAN Company (South Korea) was performed successfully. In 2009 the second phase of this work is carried out.
The problem of thermal-hydraulic tests was to investigate the hydraulic characteristics of the steam generator in stationary conditions at various regime parameters: power, flow rate and input temperature of the heating medium; pressure, flow rate and input temperature of the heated medium. The main studied parameter is the output temperature of the heated medium. At present about half of the planned regimes were carried out, the rest regimes will be carried out in 2009.
The task of thermo-cyclic testing was the experimental verification of the integrity of the steam generator at operating power 20%. Disturbance factor during thermo-cyclic testing was an outage of the heated medium for 7 minutes and the restoration of the supply for 5 minutes. For the control of the integrity of the cassette control thermo-hydraulic regimes were carried out at SG operating power 20%.
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Schematic diagram of the thermo-technical test facility
1 – the investigation model (steam generator); 2 – the first stage of the high pressure heater; 3 – the second stage of the high pressure heater; 4 – the electrical heater; 5 – the electrical pump; 6 – the pressurizer (2k); 7 – the jet pump;
8 – the ejector; 9, 9a – water coolers; 10, 10a, 10b, 10c – filters; 11 – steam cooler; 12- the pressurizer (2k).
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