The functions of water-level measurement

control

and protection in pressure stabilizer of the reactor cooling system in one loop of Dayabay Nuclear Power Station have been presented.The calculated and calibrated pressure for water-level in the pre- ssure stabilizer

and the differential pressure value being subjected by the level transducer under full load condition

as well as the pressure value needed for checking the level transducer during shutdown of the reactor for refuel and maintenance

and the risks re- sulting from non-accuracy of checked data for the level transducer etc.have been analysed.