Articles & Case Studies

Pump Supplies completes overpumping job in Worcester

Posted: Friday 14th August 2009

Pump Supplies has completed a project at Severn Trent Water’s Worcester Sewage Treatment Works, setting up a bypass over pumping system from the main inlet works, working for contractor Morgan Est.

The ten week hire contract at the works, which serves the whole of Worcester, a population equivalent of approximately 110,000, focused on over pumping the raised inlet works and screen-house whilst essential works took place. Morgan Est was upgrading the facility for Severn Trent Water, including constructing a new pumping station and inlet works.

Working within a tight operating space, Pump Supplies supplied four no. Flygt NS3301 LT 55kw sewage pumps with the new “N” type impellers to handle a flow of 1200 l/s over the hire period. Once operational on a duty, assist, standby basis, they transferred the screened sewage into the works, diverting flows away from a five metre high concrete channel which was rebuilt.

Pump Supplies designed, installed and tested the installation over a six day period before commissioning. A 12” digital flow meter was also installed to monitor the flows, flanged steel and quick release galvanised steel pipework, generators and starter panels completed the installation.

Commenting on the contract, Morgan Est’s site manager, Zoe Lonsdale, said: “In the 10 week hire timeframe, the overpumping system performed continuously 24 hours a day and we experienced no significant downtime. This meant the flows were uninterrupted and the STW continued to operate at full capacity whilst our construction work progressed.”

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