Thames Water awards Hayward Tyler contract to modify High Integrity Valve Actuation
Posted: Monday 19th February 2007
Hayward Tyler Services, a division of the Hayward Tyler Group Ltd – a manufacturer, supplier and service repairer of pumps and motors – has won a competitively tendered contract to modify and repair two Thames Water High Integrity Valves on its Ring Main project.
The Ring Main, based at Hampton, supplies drinking water to inner and greater London with its connection of reservoirs and water treatment works. As a result of significant wear and tear, the Hampton site had encountered a number of mechanical issues in regards to these valves. This led to Hayward Tyler being initially approached in early 2005 to investigate alternative methods of repairing the valves.
The original valves were commissioned with an Actuator and Line Shaft arrangement to a gearbox, mounted directly onto a gate drive mechanism. Eventually, Hayward Tyler settled on the most straight-forward method to repair the valves: a hydraulic motor drive direct to the gearbox input shaft powered from the surface – having ruled out other potential alternative actuation methods such as pneumatic and hydraulic ram operations.
Neil Langdown, General Manager of Hayward Tyler Services, said: “Having supplied Thames Water with over 30 high integrity valves for over 25 years, Hayward Tyler was well placed in terms of history and technical knowledge to offer a more cost effective engineered solution. We are delighted that our capabilities have been recognised above that of other sub-contractors and look forward another productive year alongside Thames Water.”
Costain Group Plc, the international engineering and construction group, was awarded the overall contract for all civil and mechanical projects at the Hampton site for commencement in February 2007. Black & Veatch audited the functional design of the proposed modification to actuation and the project is due to commence phase one 21st February 2007.
