Our Special Contract Service team was in Stockholm at the end of April 2005 to flow stop a 24” low pressure gas main in the very heart of the city, outside the government buildings.
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 cut out and capped off the abandoned section.
Date published – 7th April 2005
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