METHOD AND SYSTEM FOR MEASURING LIQUID LEVEL OF SPENT FUEL POOL WITHOUT USING ELECTRICAL POWER

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring a liquid level of a spent fuel pool of a light water reactor without using electrical power.SOLUTION: A system may use a pressurized gas source connected to a tube or pipe through which a gas can be discharged to the vicinity of a bottom surface of a spent fuel pool. The system may include a flow meter and a throttle valve that may be used to determine a required gas pressure to provide a specified flow rate of gas for known spent fuel pool water levels. By obtaining calibration data points of pressure and flow for multiple spent fuel pool water levels, a calibration curve may be obtained that allows for the measurement of spent fuel pool liquid levels using the system, without the need for electrical power.