Gas Mains Renewal

SVI pioneered a gas mains replacement technique called Live Gas Mains Insertion.  Thousands of miles of gas mains around the world have been inserted live since the technique was introduced in the 1980s.

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Live Gas Mains Insertion is similar to normal insertion of polyethylene pipe (PE) into an old cast iron main with one very beneficial difference. By using a special gland box, the old main is kept live throughout the insertion process and the new PE is gassed up to maintain gas supplies to customers.

Live Gas Mains Insertion

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Live Mains Insertion is a flexible technique which can be adapted for situations where you have properties shielding during the current Covid 19 pandemic.

Live Gas Mains Insertion During Covid 19