Ultrasonic cleaning procedures for pipes or nuclear fuel assemblies and equipment therefor

摘要

An ultrasonic cleaning device for cleaning a fuel assembly constituting an item (105) to be cleaned, includes: a plurality of ultrasonic transducers (111) which irradiate the outside of this item to be cleaned with ultrasonic waves from at least two directions; an ultrasonic transducer translating mechanism (110) which moves ultrasonic transducers (111) vertically along a support member (109) and which is provided with a steel housing constituting an ultrasonic wave reflecting structure which reflects ultrasonic waves from ultrasonic transducers towards the item to be cleaned ; a feed pump (129) arranged outside the item to be cleaned and constituting a cleaning liquid supply means which supplies cleaning liquid in pressurized condition into the interior of the item to be cleaned ; a discharge pump (118) constituting a cleaning liquid discharge means that discharges cleaning liquid from the cleaning liquid supply means to a filter device (120). IMAGE