Category: Project Reports


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 …

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Steve Vick International renew 10 x Live Gas Risers for NGN in Leeds

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 …

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Project Report – Isolation of four Primary Circuit Feeder Pipes from the Steam Generating Heavy Water Reactor, Winfrith

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 …

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Speedy Insertion In Wells

Live Gas Mains Insertion is a routine operation for Wales & West Utilities. In this project, they used Steve Vick International’s newly improved 125 pneumatic pushing machine with a 5” ram.
The operation involved inserting 125mm PE into a 6” main in Wells, Somerset. WWU said that they found the …

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Winfrith Power Station

Procord, the company which manages the land and buildings at Winfrith Power Station, needed to safely seal off two 180mm (6”) underground pipes.
These pipes connect pits that are, respectively, 43 metres and 28 metres apart. As the pipes run under a concrete road that would have been costly to …

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Gas Mains Replaced Using Live Mains Insertion In St. Peter-port – Guernsey

Guernsey Gas has carried out the first live insertion of a gas main on the island for two decades. The project involved renewing 126 metre of cast iron main in Le Pollet in the centre of St. Peter-Port.
A technician from Steve Vick International Ltd, the company which supplies equipment …

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Ukaea, Harwell

The project involved filling a sump and 3-4 metres of redundant 4” clay pipe that contained residual contamination from historic operations. Following several visits to the site and specific workshop trials – and based on previous experience of similar jobs for UKAEA – Steve Vick International successfully completed the sealing …

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Bristol – Flow Stopping 6″ Main

The 6” low pressure main in the High Street of Paulton, near Bristol, was being replaced with a new PE pipe but one section needed to be kept live as it was feeding three homes.
The National Grid Transco team used a FOAMBAG™ kit to flow stop the section to …

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Steve Vick Carries Out Pipe Sealing Operations At Chapelcross Nuclear Power Station

Steve Vick International Ltd was recently retained to carry out works at Chapelcross for the nuclear decommissioning company Magnox North.
The works required Steve Vick International engineers to seal off a number of redundant manholes – 43 in total – each containing between two to six inlet and outlet pipes …

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Live Mains Insertion In New York City

Niagara Mohawk, a National Grid company, recently undertook a gas mains insertion project in West Albany, upstate New York, which was carried out ‘live’ using a special technique pioneered in the United Kingdom. ‘Live’ mains insertion allows customers to remain on gas throughout the insertion process. The final stage of …

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