December 12, 2017

Using the Live Mains Insertion (LMI) method, tRIIO, a joint venture owned by Skanska UK and Morrison Utility Services working on behalf of Cadent, Britain’s largest gas distribution company, recently inserted a new 355mm PE gas main 740 metres into an 18” underground cast iron pipe in one push. This exceptionally long insertion, given the diameter of the PE, was carried out in minimum time...

February 13, 2017

Steve Vick International’s (SVI) Contract Service team have renewed ten 1.5” live gas risers in multi storey buildings in an affluent suburb of Leeds, without the need to decommission the services whilst the work was in progress. Using their Live Gas Riser Transfer technique, SVI were able to offer Northern Gas Networks (NGN) a service that kept external pipework to a minimum and thus...

January 5, 2017

Location: Winfrith Project: Isolation of four Primary Circuit Feeder Pipes from the Steam Generating Heavy Water Reactor Contractor: Magnox Limited (previously RSRL) Equipment: SVI FOAMBAGS™, umbilical filling system, CCTV and closed cell polyurethane foam Steve Vick International (SVI) has recently completed a project for Magnox Ltd. The project required SVI to design, test and...

April 20, 2015

Located in a busy area of Dudley, the gas mains that run under Shaw Road in the West Midlands town not only serve numerous homes and businesses but are also feeder mains for the local gas network.  West Midlands Gas Alliance, a partnership between National Grid and engineering contractor Morgan Sindall, embarked on a renewal programme of an 800m stretch of pipeline, running from the old gas...

A leaking drain which was causing waste water to enter the basement pool complex of a luxury Kensington town house was successfully sealed off by Dyno-Rod using the DRAINBLOCK BAG™ technique developed by Steve Vick International. Dyno-Rod franchisee, Candid Services Ltd of Staines, Middlesex, were called in when the home owners found water on the floor around their underground swimming pool....

Located on South Quay, close to a gas holder, the 200 metre sections of two-way fed main were being abandoned so that governors could be installed in order to connect into a medium pressure system. Two x two-way flow stop operations, using a total of eight bags, were carried out by a two-man team using the Foam Bag™ technique, developed by Steve Vick International. The Foam Bags were...

As part of the push to ensure all gas replacement works are completed before the Olympics arrive in London, National Grid Gas called upon Steve Vick International’s Special Contracts Team to carry out a Live Gas Main Stub End Abandonment on a 12” low pressure cast iron main, in the heart of Piccadilly. Where a new 315mm PE pipe had been laid, the existing 12” cast iron main needed to be...

As part of the utilities refurbishment project at Tottenham Court Road, Barhale Construction plc was contracted to replace a 600mm cast iron water main, possibly dating back to the 1820s, by inserting it with over 300 meters of 500mm diameter PE pipe. When sliplining a main in the water industry it is customary to use a winch. This involves threading the existing main with a wire cable, which...

  Southern Gas Networks (part of Scotia Gas Networks) has recently renewed a 3” steel gas riser in a four storey block of 45 flats in Southwark, London, using the Live Riser Transfer technique. This enabled the company to replace the service without turning off the supply, thus avoiding inconvenience for the consumer and reducing costs at the same time. When compared with using...

Farmoor supplies water to areas including Oxford and Swindon and the contractors were given only a 12 hour window to complete the project. Damar sub-contracted the cutting operation to Steve Vick International Ltd who used the N600 Keel cutter supplied by South+West Pipe Tools. The hydraulically powered machine automatically tracks around the circumference of the pipe wall whilst the tungsten...

The technique was introduced into the UK in the 1980s by British Gas and has been pioneered and enhanced over three decades by Steve Vick International. Essentially, the major advantage of keeping the old cast iron main live whilst inserting it with a new PE pipe, is that customers are off gas for much shorter periods and, being a trenchless technology, it results in far less disruption to road...

Morrison Utility Services, who hold the joint Western Gas Alliance contract alongside Amec, were recently contracted by Wales & West Utilities to carry out 3.6 kilometres of gas mains renewal in Cheltenham. The company decided to use the Live Mains Insertion (LMI) method of replacing the cast iron mains by inserting new PE pipe whilst the gas still flowed, thus minimising disruption and...