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

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 pushing machine as powerful as a hydraulic machine and pushed the 94 metres of pipe in...

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 off operation using the Foam Bag™ system, in half a...

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 for the technique, was on site to offer help and advice. Only one excavation was required for the insertion,...

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 of varying sizes from 20mm to 12”. The deepest manhole was 1.5 metres and the...

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 be abandoned before cutting out and tying the new PE to the live section. One-way traffic was maintained in the narrow, busy street....

Steve Vick International has been working with Corus Process Engineering (CPE) to provide sealing solutions for redundant sludge and effluent lines at Sellafield. The latest project is to eliminate any potential fault scenarios on the plant and reduce operator dose uptake during implementation by avoiding the need to drain the effluent tank pipes of radioactive sludge before the sealing...

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 transferring the old services to the new PE main can then be...

A two kilometre section of the main, which was cast iron at one end and steel at the other, was to be abandoned. The team installed two double-skin FOAMBAGS™ at each end of the section. Once the expanding foam was cured, the main was vented and then purged using Steve Vick International’s new Mini Purge Ejector. It took just 45 minutes to purge the gas from the abandoned main. The team then...

This medium pressure gas main had previously been blanked off but the valve, acting as an end cap, was leaking. The customer, Manx Gas, decided that using the FOAMBAG™ technique to seal off the pipe was a costeffective alternative to conventional flow stopping methods. The project was carried out by our Special Contract Service team.