22 October 2015

CiM6 (Costain Integrated with MWH for AMP6) has successfully risen to the challenge of achieving even greater efficiencies, with the delivery of its first AMP6 project for Severn Trent Water (STW).

The CiM6 team based at Longbridge near Warwick has already begun commissioning the upgraded Wootton Wawen wastewater treatment works in Warwickshire. The upgrade ensures the works meet the new standards on phosphates removal required by the EU’s new Water Framework Directive. The project involved the design, procurement, construction and commissioning of a new ferrous chloride chemical dosing plant, along with a drainage pumping station and bunded area for tanker deliveries.

“STW set the challenge of delivering even greater efficiencies in AMP6 equalling a 20% saving over identical AMP5 projects,” said Scott Hughes, Costain WLPM (Whole Life Project Manager). “To meet this tough challenge, new project delivery models and strategies were developed during the last year of AMP5 comprising collaborative planning and production control, factory thinking and design for off-site manufacture, standard products and batching. We set ourselves a target reduction of 30% faster in the STW project delivery end-to-end process (E2E), which includes client gateway governance, feasibility, outline design, detailed design, construction and commissioning.

“We also employed our own improvement strategy and delivered the civils work in-house, building new roads, paths, a small drainage pumping station and dosing plant slab, as well as landscaping. This helped us reduce the time associated with competitive tendering and enabled a more flexible approach on site when problems were encountered. It also allowed the team to have direct control over safety on site, leading to zero accidents, and the quality of the finished product, leading to zero defects. We also achieved a greater than 20% outturn cost reduction against a traditional subcontracting approach.

“Embracing off site manufacture and standard products, the chemical dosing plant from Gee & Co was 100% factory built, and factory commissioned fully on water, removing the need for nearly all testing on site prior to chemical delivery. It has been standardised to suit all five projects in Batch 1, and will be suitable for more than 10 future projects.

“We carried out all the design in 3D, which helped the team and STW operational staff easily visualize the finished product well before construction even started. This ensured we were completely confident that STW could take over the asset without any concerns or defects.”

The project is due for completion in November. Meanwhile the Longbridge team has held several workshops on the lessons learned at Wootton Wawen, and plans to implement them to deliver other, almost identical AMP6 projects even more efficiently.

Said Scott: “We have already achieved this 30% faster target at Wootten Wawen by employing all of these industry leading strategies, but it is fair to say that as it is our first project there is still room for improvement.”

He added: “I have a great team of dedicated people, all wanting to continually improve our performance, and I’m very proud of what they have achieved. A big thanks to every one of them.”

Ends

 

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