DRAINAGE SYSTEM LEAKS WITH RADIAL axial bearing of the main circulation PUMP UNIT

摘要

The invention relates to auxiliary systems, namely systems for drainage of leaks with axial-radial bearing (RRR) of the main circulation pump unit (MCPA). The scope of its application are the reactor systems of water-water type of nuclear power plant (NPP), which include the main circulation pumps (MCPA) with water-cooled radial-axial bearing (RRR). System leaks drains with axial-radial bearing of the main circulation pump unit (RCP) comprises a pressureless conduit drains drain leakage with PMA and collection and return circuit from leaking into the intermediate circuit RRR reactor plant. Circuit collection and return leaks with OPD includes leakage collection tank which is connected via a water seal drain conduit pressureless drainage of leaks with PMA and from the working space which is withdrawn tank drainage and overflow pipes and suction pipes to the pumps return drains leaks with OPD. Each recirculation pump equipped with a drainage pipeline leak collecting tank leaks and pressure lines of pumps drains leakage return duct connected to a drain system intermediate circuit via a shut-off valve. Leakage collection tank is provided with level sensor distillate in the tank and all piping system provided with adjusting, locking and cut-off and test equipment. The height of the water trap is 1.0-1.5 m. Drainage system and an overflow collecting tank leaks produce a system for collecting leaks of general boron-containing water. Circuit collection and return leaks with OPD comprises at least two return pumps drainage of leaks with OPD.; 3 ZP f ly-1-yl.