Leak-Tight Double Block & Bleed Isolation
Trusted By
"During the planning and execution of this valve repair, STATS Group was thorough, knowledgeable, and professional throughout. In essence, they became an extension of our project team. As our company continuously strives to further its safety culture, our work with the STATS team has given us confidence that the BISEP is cost-effective, proven solutions to achieving double isolation and bleed.”
Kelly Hilkewich
Senior Engineer, Western Region
Enbridge Pipelines Inc.
USA Offices
From our Houston base, we service clients across the USA.
It features a substantial 25,000 sqft office and a 42,000 sqft workshop and holds a wide range of hot tapping, inline isolation (Tecno Plug®) and line stopping (BISEP®) assets.
The facility is supported by over 60 staff, including expert field technicians. Local design and project engineering teams ensure dedicated project support.
USA – Houston
STATS International Inc
11330 Brittmoore Park Drive
Houston, Texas 77041, USA
Tel: +1 (713) 896 3150
Jamie Frederick
Tel: +1 832 755 2351
See the BISEP In Action
Hot Tapping & Line Stop Case Studies
The BISEP® has been deployed extensively across North America, and is the world’s first hot tap installed leak-tight double block and bleed isolation of high pressure hydrogen and liquid CO2 pipelines.
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3" – 56"Pipelines
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-20°C – 100°CTemperatures
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Ambient to 2220 psiPressure Range
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DNV TypeApproval
Field-Proven
Line Stop Technology
Product Information
BISEP Line Stopping
BISEP® offers significant safety advantages over traditional line stop technologies, with the hydraulically activated dual seals providing leak-tight isolation of live, pressurized pipelines.
Applications
- Pipeline launcher valve installation / replacement
- Pipeline repair, replacement, or decommissioning
- Pipeline / pipework re-routing
- Mid-line repair of pipeline defects
- Isolating pressure vessels
- Isolation of pipeline end manifolds, pipeline end terminals for repair, upgrade, or replacement
Multiple BISEPs® can be used to provide mid-line isolation of pipeline sections, and the introduction of a bypass line allows sectional isolation to take place without the need to shut down your entire system – or affect product flow.
The BISEP® is designed to resist backpressure and therefore can also be used as a test boundary for pipeline reinstatement testing.
Uniquely the BISEP® is designed to take 50% of its design pressure in the reverse direction. This allows pressure higher than the isolated pipeline pressure to be applied to the reinstated pipework (as a pressure test or purge) prior to removing the BISEP®.
STATS also supply split tee fittings or mechanical tie-in clamps for hot tap and line stop applications along with its patented dual seal slab valves and SureTap hot tap machines.
To allow the BISEP® and valve to be recovered a completion plug and blind flange can be provided to isolate the fitting branch off-take.
