6″ Boreline utilised at South African platinum mine
A South African Platinum Mine took the decision to dewater an area of their mine which had been shut down, but, with the latest platinum prices, had become viable again. The 224m shaft had filled up with water to 40m below the surface. In this unique application the water level had to be dropped to 200m below surface.
The contract was awarded to Rustenburg based Pump and Lifting Systems. Howden Pumps supplied the two pumps, capable of pumping 130 l / sec at 270m head. Based on the complexity of the situation, the time available for installation as well as height and access restrictions it was decided to go with 6″ Boreline. With its high tensile strength of 20t as well as its high burst pressure of 58bar, it made sense to use this flexible riser.
Boreline is also totally corrosion resistant which means it will not be affected when subjected to the aggressive water conditions so often found in the mine environment. Mine water has been known to break-down steel pipe in less than 12 months but with the 5 Year Warranty offered by Hose Manufacturers, the manufacturers of Boreline, this mine knew they had an added Long Term Benefit in using Boreline Flexible Riser.