Gaseal – gas line repair without destroying the pavement

Laurie Gibbons
Industry Applications
December 31, 2008

Energy repair crews are increasingly cost-conscious as they try to repair more leaks within budget and time restrictions. To facilitate this, Gaseal allows repair with minimal destruction of the street.

Permabond Gaseal anaerobic sealant allows repair by drilling through the top of the cast iron bell. Then inject Gaseal into the bell joint. This improved the process by eliminating the need to undermine (clear underneath) the pipe.

As surgeons began doing less invasive surgery on humans, utility crews were doing less invasive repair of gas pipelines. If less invasive surgery was the buzzword of the 90’s minimally invasive surgery the buzzword of the 00’s.

Square 1’ by 1’ holes improved the time required as well as reducing the risk of injuries from men working underground. Over time pavement cracks from the corners of these squares may need some subsequent attention.

So like the surgeons, the energy industry stepped it up another notch with cored hole repair. Although the hole is almost the same size, the shape is the key improvement. A service truck equipped with a special drill and vacuum cores into the pavement removing a perfect circle of pavement and underlayment. After sealing the bell with Gaseal, the plug is put back into the hole without weakening the surrounding pavement.

With the original repair process, one leak could be filled per day. The cored hole process allows up to 4 leaks per day with a smaller crew and leaves the street intact.

For further information on Gaseal, please contact Permabond.

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