| 摘要 |
PROBLEM TO BE SOLVED: To efficiently recover foreign matter coming off to fall down into water or scattered in the water. SOLUTION: This recovery device 20 is constituted of a suction pipe assembly suspended vertically from a fuel replacing crane 37, a suction side hose 27, a strainer 29, an Wilden pump 31 and a discharge hose 33. The suction pipe assembly is constituted by connecting an upper suction pipe 21, a lower suction pipe 23 and at least one intermediate suction pipe 25 each other. A bag filter 35 is provided in a water discharge port of the discharge side hose 33.
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