Pre-Commissioning

When a pipeline is new, and before it is put into operation, it is important to ensure that the line is commissioned effectively and efficiently. Also, as part of this pre-commissioning phase, it is common to take a snapshot of its condition, both as a check that the pipeline meets it design specification, and as a baseline for future assessments on threats such as corrosion growth or cracking. TDW provides a variety of products and services during this critical phase of pipeline life.

TDW provides a variety of pigging and inline inspection (ILI) solutions to prepare new pipelines for service, including:

  • Removing contaminants and construction debris.
  • Line filling for hydrotesting and dewatering afterward.
  • Identifying and verifying dents, defects, ovality, and damage.
  • Providing a baseline, or fingerprint, of defects that can be compared in future inspections.

STEP 3 / VIEW SOLUTIONS

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Because they are efficient, effective, and easy to launch and retrieve, pigs are the preferred tools for a variety of pre-commissioning activities, from cleaning and gauging to post-hydrotesting liquids displacement and preparation for pre-inline inspection (ILI).

TDW can help Gathering operators select and deploy the appropriate pig for the purpose, pipeline, and product.

Pigs for cleaning and pre-ILI preparation:

  • OptionAll™ cleaning pig – Effective for cleaning, maintenance, batching, and displacement. Can be customized with attachments appropriate for clearing pipeline solids, including discs, cups, magnets, brushes, and blades.
  • VANTAGE® V cleaning pig – Can be equipped with brushes to remove hard, crust-like deposits, urethane blades for removing gummy deposits, scraper discs to clean both hard and soft deposits, and magnet kits to remove ferrous material.
  • PitBoss™ cleaning pig – Designed to remove soft to medium-hard deposits from internal pits.
  • FJR/JRN cleaning pig – Equipped with wire brushes and urethane cups to remove contaminants and deposits from pipelines.
  • VANTAGE®+ cleaning pig – Removes hard internal pipe deposits such as mill scale, crust, and calcium deposits as well as thick, soft contaminants including sludge and mud.
  • REDSKIN™ foam pig – Available in five different configurations, including the REDSKIN RoughRider® pig for removing hard deposits.
  • WCK cleaning pig – Built to remove pipeline contaminants and deposits, with an outlet port at the pig’s front end to prevent loosened material from piling up. Available in a dual diameter model for cleaning multiple sizes of pipe in one run.
  • Pencil brush cleaning pig – Heavy duty, aggressive, and effective at removing black powder and cleaning deposits from internal pits. Removable bypass plugs provide jetting action to improve cleaning effectiveness.

Pigs for gauging deformation:

Pigs for liquids displacement:

  • UNISPHERE™ pig – Heavy-duty inflatable sphere that removes liquid hydrocarbons and water from pipelines and piping systems.
  • OptionAll™ batching pig  Designed for cleaning, line filling and dewatering, batch separation, and liquid removal.
  • VANTAGE® V batching pig – Used for batching, displacing, and cleaning.
  • X-Pig® multi-purpose utility tool  Flexible and versatile all-urethane pig that can negotiate tight pipeline turns. Appropriate for cleaning, batching, and displacement operations.
  • VANTAGE® + pig – Can be used for batching and displacement. Flexible in tight bend pipelines and can traverse a 20 percent reduction in interior pipe diameter.   

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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Advanced inline inspection (ILI) technology is used during pipeline pre-commissioning to locate, assess, and characterize any anomalies that meet specifications developed by the construction contractor or Gathering operator. This information provides a baseline for monitoring and future assessments. 

  • KALIPER® 360 – Captures baseline bore assessment information for new construction, as well as in-service pipelines.
  • Deformation (DEF) – High-resolution geometry tool that efficiently detects dents and other minute bore reductions, with accuracy to calculate dent strain.
  • Gas Magnetic Flux Leakage (GMFL) – High-resolution technology optimized for compressible inspection mediums detects and sizes volumetric features such as metal loss.
  • Multiple Dataset (MDS) platform – Provides a comprehensive baseline assessment by combining multiple technologies, including deformation, high field axial magnetic flux leakage (MFL), SpirALL® MFL, low field MFL, and XYZ mapping to generate critical information in one tool run. Can assess the pipeline for bore reductions, metal loss, long seam defects, mechanical damage, hard spots, and more in a single inspection.
  • XYZ mapping (XYZ) – Supplies highly accurate location information about every defect reported by pairing global positioning system (GPS) coordinates with inertial mapping. Also offers the ability to calculate bending strain.