Articles & Case Studies

SAINT-GOBAINíS COST-SAVING, EASIER-TO-INSTALL PIPELINE SOLUTION WINS MAJOR PROJECT

Posted: Wednesday 12th November 2008

PAM Natural ductile iron pipe, innovative protection and improved mechanical anchorage together with cost savings, technical performance and ease of installation proved the winning combination for Saint-Gobain Pipelines (SGPL) when it secured an £8m Wing Pipeline contract with Anglian Water Services.

Saint-Gobain was chosen after an intensive tender process which included proposals from suppliers of other materials including steel. Ductile iron was the preferred material because of its durability, ease of installation, corrosion protection and commercial viability.

The objective of the project is to provide an additional 50 mega litres of potable water per day from Rutland Water in the north to Beanfield Reservoir at Corby and Hannington Reservoir near Wellingborough in the south. This will enable Anglian Water to meet the increase in demand over the next 20 years resulting from the significant development planned for the area between Corby and Milton Keynes.

Raw water will be drawn from Rutland Water to the Empingham Pumping Station, then pumped to the Wing Water Treatment Works 8km away. When treated, the water will be pumped to the Beanfield reservoir 15km away and then, finally, onto the Hannington Reservoir which is a further 18km. In addition to the pipelines, the Wing programme of work includes new pumping stations and a new water treatment works. The total value of the Wing programme is £115m, of which the pipeline project comprises £35m.

PAM Natural ductile iron pipe has been specified in diameter DN900 for 18km and DN1000 for 23 km. The pipes are coated with 400 gm zinc aluminium and finished with blue epoxy for the potable section and black bitumen for the raw water section. In areas where the ground was deemed to be highly aggressive, TT coating was specified. The wider field of applications for which 400 gm natural zinc aluminium is suitable allowed the number of areas where the pipeline required the additional TT protection to be reduced from an original estimate of 12km to just 1.8 km, significantly reducing both material and installation costs.

SGPL has worked with the project team comprising Anglian Water, Mott MacDonald and contractor JN Bentley to develop a solution that delivers a quality pipeline at the lowest overall cost. One cost saving solution provided by SGPL for the Wing Pipeline Project is the recently launched Rapid Mechanical Anchor joint, designed to reduce installation costs by making the on-site anchoring of pressure pipelines quicker and easier.

The Rapid Mechanical anchor joint, which is capable of restraining an operating pressure of up to 64 bar (depending on diameter), offers a more environmentally beneficial alternative to concrete thrust blocks traditionally used to anchor pressure pipelines. Anchorage is provided by the use of a rapid mechanical anchor ring which offered installation cost savings over traditional thrust block or Tybar type systems.

Ability to supply to match the intended programme was another contributing factor to SGPL being chosen.

www.saint-gobain-pipelines.co.uk




Read the magazine online

December 2018

About the magazine »
Magazine archive »


Advertisements

Information for advertisers »

Pulsar New Banner
Water Aid Prominent Fluid Controls Pulsar Button June 13 British Water Verder buttonwood marketing Huber Harvey Communications wateractive
Grundfos 2018