Relining pipes at Anglo Gold – Landau Colliery

Anglo Gold – Landau Colliery , Witbank

One of the lime water tanks at the mine was decommissioned due to a piping problem. The 110mm galvanized drainage pipe running underneath the tank was corroded to the extent where the tank could not be used and that section of the plant shut down.

The mines greatest concern was downtime. Replacing the pipe would mean chopping open the bottom of the tank, replacing the pipe and then repairing the tank. This would be a time consuming process during which that section of the plant would be un-operational. The mine turned to Nu Flow for a quicker, less disruptive solution.

Nu Flow was called to clean the corroded 110mm pipe and then reline it. Nu Flow used specialized cleaning equipment to descale the galvanized pipe. Once the pipe had been descaled and returned to its full diameter, Nu Flow pulled an epoxy saturated liner into the pipe. Within the liner is a rubber bladder which is inated when the liner is in position.

The bladder is left inated until the epoxy has cured. Once the epoxy has cured, the bladder is removed leaving behind a ‘nu pipe’ within the host pipe.

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