Solutions Engine

Step 2 / Select A Condition

Long Seam Cracks

Pipeline seams can contain defects that, under abnormal conditions, can cause cracking and lead to pipeline failure. TDW offers a suite of solutions to help pipeline owners and operators detect such threats, including hook cracks, lack of fusion in long seams, and other pipeline seam flaws.

TDW services enable the Liquids Transmission market to:

  • Detect seam flaws before they lead to failure.
  • Perform comprehensive seam assessments with no damage to the pipeline.
  • Prioritize repairs.
  • Avoid pipeline shutdown.
  • Keep pipelines running safely and efficiently, in compliance with company, industry, and regulatory standards.

STEP 3 / VIEW SOLUTIONS

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Pigging programs enhance pipeline integrity for Liquids Transmission operators by reducing the risk of leaks through the removal of built-up liquids, contaminants, and deposits on the pipe wall. Cleaning pigs prepare the pipeline for evaluation, helping to improve data capture and accuracy, providing the most valuable information possible.

  • VANTAGE® V cleaning pig – Multi-use pig designed to remove both hard, crust-like and soft, gummy deposits, as well as ferrous materials.
  • PitBoss™ cleaning pig – Removes soft to medium-hard deposits from internal pits, which is essential to improving the effectiveness of corrosion inhibitors.
  • WCK cleaning pig – Removes contaminants and deposits that increase resistance to flow.
  • REDSKIN™ foam pig – Used for light cleaning; one version incorporates a urethane cleaning wrap with bypass groove that effectively removes paraffin and other soft deposits that could lead to corrosion.
  • V-Jet® corrosion inhibitor pig – Sprays corrosion inhibitor onto the hard-to-reach inside top portion of multi-phase gas gathering and transmission lines.
  • OptionAll™ batching pig – Designed for light cleaning, line filling and dewatering, batch separation, and liquid removal.
  • VANTAGE® V batching pig – Multi-use pigs used for batching, displacing, and light cleaning,
  • UNISPHERE™ pig – Provides heavy-duty removal of liquid hydrocarbons and water from pipelines and piping systems.

Technical assistance is available from TDW subject matter experts for special circumstances or if the path to a solution requires consultation.

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Through advanced inline inspection (ILI) technology to detect and characterize long seam cracks, lack of fusion, and hook cracks, TDW helps Liquids Transmission operators optimize the number of inspections and unnecessary excavations, saving time while lowering operational risks and costs

  • Multiple Dataset (MDS) platform Combines multiple technologies to generate comprehensive, critical information in a single tool run. To detect seam defects, MDS utilizes SpirALL® Magnetic Flux Leakage (SMFL), and leverages Axial Magnetic Flux Leakage (MFL) to improve characterization of seam related features.
  • SpirALL® Electromagnetic Acoustic Transducer (EMAT) – Using a unique sensor/magnetizer configuration, guided ultrasonic (sound) waves are transmitted into the pipe wall through direct contact, allowing EMAT to inspect natural gas and liquids pipelines. Axially oriented crack/crack-like defects are detected by EMAT and the orientation of the long seam is confirmed with SMFL. EMAT will find the crack/crack-like defects in the seam that are below the detectable limit of SMFL.
  • XYZ mapping (XYZ) – Supplies highly accurate location information about every defect reported by pairing global positioning system (GPS) coordinates with inertial mapping.

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TDW provides Liquids Transmission operators non-destructive in-ditch assessment to detect and size crack and crack-like anomalies in the pipe wall, including inside welds, near mechanical damage, and in high-stress areas such as seams.

  • Phased array – An advanced ultrasonic inspection used to detect and size planar anomalies such as long seam cracks. This evaluation allows for permanent documentation of acquired data for anomaly growth monitoring.
  • Conventional shear wave ultrasound – This technology detects and sizes planar anomalies that are perpendicular to the pipe wall.
  • Magnetic particle inspection (MPI) – A combination of magnetic flux leakage (MFL) testing and visual inspection, this evaluation checks exposed pipe for surface anomalies such as long seam cracks.

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In the Liquids Transmission market, where pipeline shutdown often is not an option, TDW offers safe and efficient hot tapping and plugging (HT&P) solutions for a wide array of pipeline defects and maintenance challenges, from dents to corrosion to valve failure.

The HT&P process incorporates a high pressure pipeline fitting, valve, tapping machine, and isolation equipment – all working together to provide a safe and proven isolation solution. Once the area of pipeline that needs work has been safely isolated and evacuated, the line modification can be performed.

TDW isolation technology plays a critical role in this process, and a temporary bypass allows work to be performed without the need to stop product flow. The TDW STOPPLE® Train isolation system, for example, uses double block and bleed technology to help increase efficiency and safety during pipeline modification. This approach to line isolation, which only requires a single pipeline tap, reduces costs associated with fittings, valves, welding and inspection services. The bleed port affixed on the line ensures that any product that bypasses the first seal is contained and evacuated through the bleed port, which helps operators better protect people and the environment.

Because double block and bleed plays such a large role in protecting people, the environment, and communities that a number of regulators in Canada now require it for HT&P repairs. American regulators are likewise moving in that direction. 

Whether operators purchase equipment to perform their own HT&P jobs or turn to TDW to execute the service, they can rely on the company’s broad line of equipment and consumables. TDW engineers and manufactures nearly every component needed for an HT&P project, and the company’s tapping and plugging machines are considered the industry standard. To meet regional needs quickly and efficiently, TDW maintains equipment and consumables in service centers around the globe.

TDW can also partner with operators before the work begins, providing consulting services to help them make optimum use of TDW products and services. TDW application engineers are recognized industry experts, ready to assist operators through each project phase – from start to finish. 

TDW also offers RES-Q® Wrap and Steel Repair Sleeves, quick, simple solutions that allow operators to keep their pipeline operational and within code

To prepare for future challenges, operators have the option of creating an Emergency Pipeline Repair System (EPRS), which equips them to take a proactive approach to pipeline emergencies. Working with the TDW team, operators will have the planning and resources in place to repair and recommission the pipelines — and restore product flow — in the shortest time possible.