METHOD OF REMOVING A RESIDUAL MATERIAL FROM A CONDUIT
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United States of America Patent
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Issued Date -
Apr 16, 2009
app pub date -
Apr 25, 2007
filing date -
Apr 27, 2006
priority date (Note) -
Abandoned
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Abstract
An underground cable (2) comprises a housing (4) filled with conductive elements (6) and an insulating oil (12). To remove the insulating oil and prevent contamination, a visco-elastic formulation is prepared, suitably from cross-linked polyvinylalcohol, and introduced into the cable (2). The fluid is forced through the cable whereby it removes insulating oil therefrom.
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