{HEAD ~ The Power Platform} also is used as {TAIL ~ a testing system} for control umbilicals that usually are near the pipelines 
is used as
{ HEAD ~ The Power Platform } also is used as { TAIL ~ a testing system } for control umbilicals that usually are near the pipelines
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH