Featherstone Prison, Wolverhampton
Donegan Civil Engineering were appointed by Kier Construction to undertake this specialist subcontract which included the design, build and installation of an underground pumping station on the extension works to HMP Featherstone.
A 9.00m internal diameter shaft was sank by caisson method to a depth of approx 10m in sands, gravels and founded in very weak sandstone.
Surrounding structures included a Valve Chamber, Flow Control Chamber, Isolation Penstock Chamber and Macerator Chamber. Along with these structures there was also the interconnecting pipework, ductile iron backdrop pipework and rising main pipework.
The M&E works included 3 variable speed submersible pumps, rising main pipework, isolating penstock for maintenance purposes, a macerator channel grinder for breaking up solids and all electronic control equipment.
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