| 摘要 |
PROBLEM TO BE SOLVED: To provide a water leakage detecting method of a deep layer intake pipe capable of easily detecting water leakage and a water leakage place of the deep layer water intake pipe. SOLUTION: A water filling riser 2 is connected to the vicinity of a drain port 6 in a water intake chamber 3 of the deep layer water intake pipe 1 via a directional control valve 5, and after switching the directional control valve 5 to the water filling riser 2 side, liquid having a specific gravity smaller than seawater is filled up to an intake port 10 of the deep layer water intake pipe 1 from the water filling riser 2, a water level in the water filling riser 2 at this time is recorded, and water leakage is determined by a change in the water level in the water filling riser 2. The depth from a water surface of the water leakage place is calculated by the water level difference, and the vicinity is observed by an ROV so that the water leakage place can be confirmed.
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