Lying between the dead water material to leakage inspection manner and leakage

摘要

PROBLEM TO BE SOLVED: To inspect a water leakage before water is filled fully.;SOLUTION: In a specifying operation of a gas leakage position, nitrogen gas under a definite pressure is injected between a main water shutoff plate and an auxiliary water shutoff plate via an injection tube, and an acqueous soap solution is coated along the upperstream side of a transverse joint. When a gas leakage is present at the transverse joint, the nitrogen gas is discharged from its part, the soap solution is swollen, and a hemispherical soap bubble is formed. When a face coated with the soap solution is visually observed, a gas leakage generation place is detected so as to be specified simply. When a diameter of the soap bubble formed by swelling the soap solution is measured, a gas leakage amount and a size of a gas leakage place are estimated. The gas leakage generation place is substantially identical to a water leakage generation place when a quantitative problem of leak water is not taken into consideration.;COPYRIGHT: (C)2004,JPO