STATS Group were contracted by a North Sea operator to supply high pressure isolation plugs to provide a double block and bleed isolation barrier for the safe tie-in of a wye structure on 24-inch gas export pipeline.
To facilitate the double block isolation and enable a reinstatement leak test in accordance with the pipeline design code, STATS provided two remotely controlled Tecno Plugs™.
The first Tecno Plug™ provided a proven double block isolation from pipeline pressure. The second Tecno Plug™ provided a local leak test boundary.
Using two plugs in this manner maintains a safe isolation until the leak test is completed and prevents pressurising the entire pipeline up to leak test pressure, STATS wrote.
Recently STATS Group received the DNV GL seal of approval for its Tecno Plug and BISEP range of pipeline isolation tools.