Harsco mastclimbers provide access to storm water tank

Harsco Infrastructure recently provided six mastclimbers to assist contractor John Murphy & Sons (JMS) in the construction of the Maryport UID scheme in Cumbria, UK.

JMS is constructing a large-scale detention tank at the existing pumping station to prevent storm water surges entering the Solway Firth. The new 25 m circular concrete tank has been built inside a secant piled wall and is 14.5 m in depth.

Harsco installed the six mastclimbers to enable the concrete formwork to be poured inside the excavation while at the same time providing full access to the walls of the shaft.

The mastclimbers were fitted with a special curved face that allowed the workforce direct access to the tank walls as they were being built. The mastclimbers could be raised or lowered as needed to allow for several construction activities to be carried out simultaneously.

The use of modified mast climbing work platforms was first used at the JMS site at Deephams for Thames Water, and was adapted to suit the Maryport scheme.