METHOD FOR CLEANING EXISTING PIPELINE

METHOD FOR CLEANING EXISTING PIPELINE

PROBLEM TO BE SOLVED: To provide a method for cleaning an existing pipeline capable of improving cleaning workability by evenly removing foreign substances in the whole region of the inner face of the pipeline in the circumference direction and in the direction in which the pipeline is laid at the t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: MAKI YUUICHI
Format: Patent
Sprache:eng
Schlagworte:
CLEANING
CLEANING IN GENERAL
PERFORMING OPERATIONS
PREVENTION OF FOULING IN GENERAL
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for cleaning an existing pipeline capable of improving cleaning workability by evenly removing foreign substances in the whole region of the inner face of the pipeline in the circumference direction and in the direction in which the pipeline is laid at the time of moving in the existing pipeline. SOLUTION: In this existing pipeline 1-cleaning method for removing foreign substances such as dust adhering to the inner face of an existing pipeline 1, at least an electrically charged pig 3, a static eliminator pig 4, and a cleaning pig 5 of an elastic body containing a cleaning liquid are arranged from the upstream side to the downstream side in the direction in which the pigs are moved in the existing pipeline 1 and the respective pigs are inserted into one aperture of the existing pipeline 1 and moved in the pipeline.