August 2011, Vol. 238 No. 8

Features

Automatic Multiple Cleaning Pig Launching System Passes Test

A patented automatic multiple pig launching (AMPL) system has been developed and undergone its first commercial use. The system individually launches multiple pigs from a preloaded cassette. The system requires no modification to the existing pipeline launcher because the pig launching process is controlled by a hydraulic system incorporated with the pigs rather than by using complex pipeline on the launcher. The new system allows a series of pigs to be launched into a pipeline at operator-controlled intervals while minimizing the number of times a pig launcher door has to be opened to access the pipeline. Because the system is hydraulically operated, it does not require any ex

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