Subsea Hot Tap Clamp

STATS subsea Mechanical Hot Tapping clamps facilitate the connection of new branch pipework to existing infrastructure without the requirement for hyperbaric welding or pre-installed tees. Mechanical clamps are routinely used to provide a flanged off-take to enable hot tapping into an existing pipeline while under pressure and with no interruption to production. The clamps can also be utilised as an access point to deploy a temporary double block and bleed BISEP isolation, STATS proprietary line plugging technology.

Subsea Mechanical Hot Tap Clamp

Subsea mechanical clamps are routinely used to provide a flanged off-take to enable hot tapping into an existing pipeline while under pressure and with no interruption to production. The clamps can also be utilised as an access point to deploy a temporary double block and bleed BISEP isolation, STATS proprietary line plugging technology.

Subsea Hot Tap Clamp

Mechanical Hot Tap Clamp Applications

  • Tie-in or re-route of subsea pipeline infrastructure
  • Subsea pipeline repair: hot tapping access point to deploy BISEP, double block and bleed line plugging technology

Key Features

  • Designed to meet clients pipeline pressure and size requirements
  • Dual seal design, independent activation of seals and locks
  • Designed to be compatible with STATS BISEP line plugging technology
  • Designed to withstand full pipe separation loads (full structural design)
  • Hydrogenated Nitrile Butadiene Rubber (HNBR) seal supplied as standard, alternative sealing material available upon request
  • DNV Design Review Certificate available upon request (optional item)
  • Annulus test port allows a pressure test between the dual seal arrangement
  • Designed for compatibility with a wide range of pipe materials including carbon steel and stainless steel as standard, duplex available on request
  • External grip assembly applies even linear and circumferential grip load around the host pipe, eliminating localised material deformity and localised stress fractures.
  • Easily installed and commissioned by divers with basic training
  • External grip, lock and seal assemblies eliminate possible flow disturbance and turbulence

Applicable Standards & Specifications

  • DNVGL-ST-F101 Submarine Pipeline Systems
  • ASME Boiler and Pressure Vessel Code, Section VIII, Div 2API 5L, Specification for Line Pipe
  • ASME B16.5, Pipe Flanges and Flanged Fittings
  • ASME B31.8, Gas Transmission and Distribution Systems
  • ASME B31.4, Pipeline Transportation Systems for Liquid Hydrocarbons
  • API 6H, Specification on End Closures, Connectors and Swivels
  • External coated in accordance with Norsok M501 System 7

Related Resources

Subsea Mechanical Clamp and Hot Tap Tie-In

Subsea Mechanical Clamp and Hot Tap Tie-In

STATS were contracted by a global engineering and construction company to provide subsea mechanical clamp and hot tapping services in the Bass Strait, offshore ...
Read the Case Study
SureTap Subsea Hot Tapping, Pipeline Rerouting

SureTap Subsea Hot Tapping, Pipeline Rerouting

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Subsea Mechanical Hot Tap Fittings

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