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Closed Circuit Television
This is another means of carrying out internal inspection inside small diameter pipelines . The CCTV camera is being moved through the pipeline at a constant speed and stop wherever to allow inspection from the display screen , to take video and photographs as necessary . The site supervisor should prepare the key plan to locate the pipelines being inspected , associated manholes , chambers and structures , together with details including date , location , pipe material , pipe diameter , chainage of inspection , manholes , junctions and occurrence and type of defects observed in each pipeline inspected .
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