Repair of underwater pipe line damaged by ship's anchor in river crossing near Philadelphia; ruptured 12 in. line serves as 6300-ft "casing" for 8 in. standby products line; crews installed repair coupling under river, threaded pulling cable through old line with air pressure behind pig and pulled 8 in. through, using fuel oil fill in annulus to lubricate pipe walls and reduce drag.
Socony pulls 8-inch through damaged 12-inch under Delaware river
Pipe Line Industry
Pipe Line Industry ; 9 , n 5
1958
Aufsatz (Zeitschrift)
Englisch
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