Defects diagnosis technology of water supply pipe's network usingpipe endoscope camera of high resolution/high pressure resistanceperformance

The size of pipe network accident caused by aging of water distribution system, rapid urbanization, abnormal climate or a disaster such as an earthquake is gradually becoming larger.Accordingly, it is required to improve the technology to maintain the water distribution system sothat the related technologies can be scientifically and systematically applied. The paradigm ofKORn water supply service is changing from supply era to maintenance era, and it is required toapply equipment and method to effectively check, diagnose and test the internal condition of thepipe without stopping water supply. If photographing and diagnosis of the burial environmentaround the water service pipeline and inside the pipe can be carried out without stopping watersupply effectively utilizing the surrounding facilities such as straight piping and air valve to themaximum, decrepit pipe (defective pipe) improvement projects can be effectively carried out bymaking adequate decisions. Also, a systematic and more efficient water supply service maintenancesystem can be established by building a database of surrounding pipeline directly investigated andselecting priority of direct/indirect evaluation. This study has raised accuracy of a diagnosis byapplying a camera capable of securing high resolution without generation of distortion in case ofphotographing the inside of a pipe, and suggested an application method of the pipe endoscopecamera using an inspection hole inside a pipe.