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FBOS (Foambag Operation on Stubs) is a method of replacing short lengths of T1 stubs/stranded mains for diameters of 4” up to 8” including one-way fed in sensitive locations or where access onto the main is restricted

FBOS – Foambag Operation On Stubs

The ESEAL technique is used for the safe, remote, 100% abandonment of unwanted sections of gas main, including the last transition joint. ESEAL is the replacement technique for Live Stub End Abandonment.