{HEAD ~ The present invention} is directed to a power system consisting of a non buoyant metal structure for powering motor or pump selected for {TAIL ~ cleaning}, filling, chemical treating, pigging, hydrostatic testing or dewatering the pipeline that are in a skid subsea near the pipeline 
{ HEAD ~ The present invention } is directed to a power system consisting of a non buoyant metal structure for powering motor or pump selected for { TAIL ~ cleaning } , filling , chemical treating , pigging , hydrostatic testing or dewatering the pipeline that are in a skid subsea near the pipeline
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