Quote:
Originally Posted by oldE
Through brilliant deduction and reading the photo identifiers, one might conclude the first is of the London England "Fatberg" which weighed many tons and had to be manually removed from the sewers. The second is of steel balls which can be drawn through the Paris sewers to shift minor clogs.
Best
Les
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AKA "pigging" a line. Done in pipelines and refineries a lot.
They send a pig down the line using hydraulic pressure, and the pig is sized and designed so that it cleans stuff out of the pipe.
they even have smart pigs that can take pictures, sent out signals of location, measure and record wall thickness of miles of pipe at a time, etc. Pretty friggin neat.
