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Fig. 1.2. Schematic Diagram of VPBER-600 ReactorUnit
The reactor unit consists of the following main circuits and systems:
•
primary circuit (reactor and cleanup system (KBE));
•
secondary circuit (LAB and LBA);
•
intermediate cooling circuit (КАА);
•
emergency heat removal system (JNB);
•
pressure containment system;
•
liquid poison injection system (JDJ);
•
primary overpressure protection system that actuates in case of anticipated acci-
dents;
•
reactor depressurization system;
•
primary coolant makeup system (KBA);
•
gas system;
•
maintenance shutdown cooling line (JNA);
•
safety enclosure;
•
safety enclosure ventilation system.
The reactor unit is installed inside a sealed containment.
The emergency heat removal, pressure containment, liquid poison injection and
primary overpressure protection, and depressurization systems, the safety enclosure, and
the containment make up the reactor safety system.
The primary circuit
is intended for the heat removal from the core to the secondary
circuit.
The primary circuit includes:
•
an integral-type water-water reactor, the pressure vessel of which comprises the
core with control rods drive mechanisms, steam generator units, core cooling circuit,
