Isolation & Intervention

Tecno Plug Pressurised Pipeline Valve Changeout
Isolation of pipelines and pipework systems is a key requirement for the maintenance and modification of oil, gas and petrochemical infrastructure. STATS Group has access to a wide range of pipeline isolation techniques and offers a consultation service to assist operators in assessing the optimum solution for their pipeline isolation challenges. Our comprehensive range of products and services provide the highest practical pipeline isolation integrity for a vast variety of applications.

STATS supply isolation devices from ¾ inch to 48 inches that are compliant with 1D to 5D bends. Our extensive product range allows for isolations to be undertaken safely and efficiently on ambient or pressurised systems. This product range also allows for isolations to be undertaken where full bore access is not available. STATS have designed and manufactured a number of world-beating products, which have led major operators to reassess how they manage isolation and intervention projects.

The Tecno Plug™ provides fail-safe double block and bleed isolation of high pressure pipelines while the system remains live and at operating pressure. Dual seals provide a zero-energy zone to enable maintenance work to be carried out safely and efficiently. Piggable isolation tools require no welding or cutting into live lines, leaving no residual fittings or hardware on the pipeline.

Hot Tapping and Plugging can be achieved using STATS patented BISEP™. The fail-safe double block and bleed isolation is deployed through a single full bore hot tap penetration, without the need for additional bleed or vent ports. The BISEP™ offers significant safety advantages over traditional line stop technology, the hydraulically activated dual seals provide leak-tight isolation of live, pressurised pipelines.

A unique process to address problems with small bore pipework that have absent or limited isolation facilities. This innovative solution enables small bore pipework and branches to be isolated, cut and terminated with a full bore valve whilst the system remains live.

DNV GL Type Approval

STATS Tecno Plug™ and BISEP™ are fully certified by DNV GL to verify that the design criteria satisfies the requirements for Pipeline Isolation Plugs to provide dual seal and isolation in accordance with Offshore Standards; DNV-OS-F101 (Submarine Pipeline Systems) and recommended Practices; DNV-RP-F113 (Subsea Pipeline Repair) and in compliance with the following code; ASME BPVC Section VIII, Division 2.

STATS have an extensive track record of providing temporary pressurised isolation of onshore and subsea pipelines in a range of sizes. Isolation operations have been undertaken in most pipeline mediums including, gas, crude oil, liquid CO2 and condensate.