NUCLEAR POWER UNIT Russian patent published in 1995 - IPC

FIELD: nuclear power engineering. SUBSTANCE: heat exchanger case of secondary and auxiliary coolant circuits is mounted on reactor cover wherein there are at least two holes passing pipings for coolant admission to and discharge from heat exchanger of primary and secondary coolant circuits. Coolant admission piping running to heat exchanger of primary and secondary circuits communicates with space under heat transfer surface of heat exchanger in secondary and auxiliary coolant circuits; coolant discharge piping communicates with space above this surface. EFFECT: reduced mass and size of nuclear power unit, improved nuclear safety. 3 cl, 2 dwg