| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a washing method capable of reducing the amount of used pure water in a pipe washing process of a nuclear power plant. <P>SOLUTION: The pipe washing method in a nuclear power plant has pipe washing equipment which supplies pure water supplied from a pure water producing device 1 to a washing object system 6 through a supply system 3, recovers washing water after washing the washing object system 6 to a recovery system 7 and further is branched into a water discharge 11 connected to water discharge processing equipment 12 and a circulation system 13 connected to the supply system 3. The pipe washing method in a nuclear power plant includes: a water filling process of filling pipe washing equipment and washing object system 6 with pure water; an extrusion washing process of discharging the pure water of an amount about one to two times the holding water amount of the pipe washing equipment and the washing object system 6 to the water discharge processing equipment 12 through the supply system 3, washing object system 6, recovery system 7 and water discharge 11; and a circulation washing process of circulating the pure water through the supply system 3, the washing object system 6, a circulation strainer 8 and a filtration filter 10 in the recovery system 7, and the circulation system 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
