Utile have recently completed a 201K upgrade of the gas system on the 4No. digesters in partnership with A.C Chester Ltd as part of Severn Trent Water’s AMP4 digester refurbishment program.

The contract had many facets including the installation of a continuous digester gas mixing system in Digester No.1, design and installation of gas collection pipe work between the digesters to the new gas holder, and off-takes to boilers, CHP and flare.

Our brief was to ensure the plant remained operational at all times, thus requiring existing gas pipe work to remain in service until final tie-ins could be achieved.

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