en.Wedoany.com Reported - Barhale has commenced design work for the next phase of mechanical, electrical, instrumentation, control and automation (MEICA) works at Mogden Sewage Treatment Works.

The infrastructure specialist stated in a project update that this phase encompasses a comprehensive upgrade package for both above-ground and underground infrastructure.

Thames Water appointed Barhale in 2024 to deliver a £21 million upgrade at the Mogden Sewage Treatment Works in west London, aimed at improving freshwater supply in the western part of the capital. The plan includes converting an existing Thames Water ring main manhole into a new pumping shaft.

Tunnelling work between the Mogden site and the Worton Road car park has now been completed. Barhale carried out a 176-metre tunnel drive using 120mm pipe jacking. The company also installed DN1000 steel E-type joint pipes in 4-metre sections within the tunnel, followed by pipe pressure testing.

Excavation of a 28-metre by 17-metre cofferdam began in October last year, alongside site preparation for riser installation. Barhale stated that the riser connection will link the newly installed tunnel pipes to the existing 33in trunk main. Riser installation commenced in early November and progressed concurrently with the cofferdam excavation. Other works included backfilling the reception shaft, installing concrete cover slabs, and restoring the Worton Road car park.

Barhale indicated that it plans to return to the site in 2027 to complete the final connection to the existing 33in trunk main. The current MEICA phase involves excavation between the reception shaft and the existing 33in Kew Trunk Main to install connecting pipes and a T-piece for tapping into the main, along with the construction of a new motor control centre and welfare facilities. Other works will include building pressure vessels and a pressure tank, as well as installing two new transformers with concrete foundations. Four pumps will be installed within the existing shaft, complete with associated valves and pipework. These units will be supported by a new cover incorporating steel beams for the rising main and pressure columns, with maintenance access provided.

This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com