Hot Tapping & Plugging

Hot Tapping & Plugging

Hot Tapping and Plugging Technology Opens Pathway for Safe, Efficient Projects

Regardless of the size, complexity, or location of a pipeline project, hot tapping and plugging (HT&P) is the preferred method for performing maintenance, repairs, or modification work that requires making safe entry into a live, pressurized line. The technology also makes it possible for pipeline owners and operators to isolate and bypass sections of pipeline so they can complete their projects without shutting down the system or losing product.

TDW has been a trusted source of HT&P equipment and consumables for decades, and when operators turn to TDW services to complete their projects, the company provides certified specialists — whose training fully aligns with U.S. Department of Transportation (DOT) operator qualification requirements — to ensure the work is done properly.

HT&P Solutions

All TDW equipment and consumables — including engineered-to-order solutions — can be paired with the company’s HT&P services, from installing corrosion monitoring systems to executing pipeline relocations. TDW is fully prepared to provide pipeline alterations or repairs on any system, anywhere in the world, including subsea environments.

The company’s HT&P solutions include:

  • Fittings – The hot tapping process begins when an operator connects a high pressure fitting or low pressure fitting to a pipeline. These fittings can range from a welded nipple to a full-encirclement for additional pipeline support.  
    • Completion plugs – These plugs are inserted to temporarily stop product flow after the operator completes a hot tap and removes the valve. For example, the TDW STOPPLE® Plus fitting utilizes a LOCK-O-RING® Plus completion plug.
  • Tapping and drilling machines  – Operators use these tools to bore a pilot hole and make a new connection into a live pipeline. TDW offers tapping systems for a vast array of pipeline diameters, pressures, and compositions.
  • Valves  – Operators perform hot taps by cutting out a coupon (curved section of pipeline wall) and pulling it out through an open valve, which is sandwiched between the fitting and hot tapping machine. These temporary devices contribute significantly to the safety and efficiency of TDW hot taps.
  • Isolation technology  – TDW isolation solutions temporarily seal off the area of pipeline that requires work, which allows the operator to safely complete pipeline maintenance and modifications. When paired with a bypass, there is minimal impact on product flow. This includes the proprietary STOPPLE® Train isolation system utilizing double block and bleed technology.
  • Welding services – TDW provides in-service welding to prepare lines for modifications and to repair damage. Operators have the assurance that all job requirements will be met by tested, qualified, and experienced welders, and that welding on the lines will be according to code.
  • Repair wraps and sleeves – TDW offers steel repair sleeves and RES-Q® composite wraps, which operators can use for all repairs, from temporary to permanent, on most pipeline diameters.

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Tapping

Tapping Machines

TDW provides hot tapping services and equipment that enable pipeline owners and operators to safely, efficiently, and cost effectively perform pipeline modification and repair activities without shutdown and with minimal disruption to product flow.

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Isolation

Isolation

In addition to saving pipeline owners and operators time and money by eliminating the need to blow down miles of line in between valves, line isolation plays an integral role in performing a variety of both planned and unplanned activities, including routine maintenance, new construction, expansions, and emergency interventions.

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Valves

Valves

TDW designs and manufactures high-performance valves that improve safety and efficiency when conducting tapping and isolation operations on in-service pipelines, tanks, and storage vessels.

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Low Pressure Fittings

Low-Pressure Fittings

TDW designs and manufactures a full suite of low-pressure fittings that enable operators to perform work on pipelines, tanks, and storage vessels without shutdown.

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High Pressure Fittings

High-Pressure Fittings

Developed through more than 95 years of experience in the pipeline industry, high-pressure fittings from TDW are furnished with patented features that can help operators safely and efficiently repair and maintain high-pressure lines without shutdown or interruption of service.

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Repair

Repair

Repairing defects, dents, gouges, corrosion, and leaks in pipelines can be a costly and resource-intensive task. For more than 60 years, TDW has worked to make that task less costly and more efficient by offering a range of repair and reinforcement products that are capable of permanently restoring pipelines to their maximum operating pressure without having to replace the entire section.

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Weldings

In-Service / Hot Tap Welding

In-service pipeline welding requires a great deal of knowledge, experience, and expertise to be completed safely and cost-effectively. Improper execution of welding can present any number of risks - from burn-through to hydrogen cracking to material degradation - that can compromise the integrity of the pipeline, as well as the safety of the people and environment around it.

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Training

Training

TDW provides the most comprehensive hot tapping, plugging, pigging, and composite wrap installation instruction available in compliance with Department of Transportation covered tasks standards requirements.

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