METHOD FOR CLEANING INNER SURFACE OF PIPE, AND DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To reduce the cost by decreasing the consumption of a polishing agent and personnel expenses almost without a difference in the removal of an adherent matter and without the necessity of a pretreatment, and also prevent the scattering of dust and the clogging of a pipe with the polishing agent from occurring. SOLUTION: An adherent matter such as rust sticking to the inner surface of a pipe P is scraped off by passing a mixed fluid obtained by mixing the polishing agent S and water W through the pipe P for a specified time.