METHOD FOR WATER LEAKAGE INSPECTION AFTER CORPORATION COCK CONSTRUCTION, AND DEVICE FOR WATER LEAKAGE INSPECTION FOR IMPLEMENTING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for water leakage inspection after corporation cock construction that can inspect whether there is a possibility of water leakage before water conduction to a rehabilitation pipe by conducting a hydraulic pressure test on a corporation cock using a simple hydraulic pressure test tool without supplying water to the rehabilitation pipe after implementation of the same corporation cock construction technique as patent application 2011-179747 although it uses the construction technique.

SOLUTION: There is provided the method for water leakage inspection after the corporation cock construction, the method including: a first step of sending a corporation cock attachment member from one end opening part of an existing pipe having a corporation cock attachment hole bored through a rope; a second step of fitting a sleeve of the corporation cock attachment and a rubber ring to the corporation cock attachment hole; a third step of performing inspection on water leakage and then detaching a hydraulic pressure testing device; a fourth step of taking the corporation cock attachment member out of the pipe from the one end opening part of the existing pipe through the rope after the inspection on the water leakage; and a fifth step of mounting a corporation cock on the sleeve projecting out of the existing pipe.

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