STATS were contracted by a major 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.

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STATS Tecno Plugs™ feature leak-tight dual seals to provide a zero-energy zone, enabling maintenance work to be carried out safely and efficiently while meeting industry-led double block and bleed requirements.

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