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Overview of In-line Inspection (ILI)
In-line Inspection (ILI) involves the evaluation of pipes and pipelines using “smart pigs” (both tethered and non-tethered) that utilize non-destructive examination techniques to detect and size internal damage. ILI measures and records irregularities in pipelines including corrosion, cracks, deformations, or other defects.
ILI is a common practice throughout the oil and gas industry and has proven invaluable for examining extensive pipelines. It makes inspecting the condition of long stretches of pipelines, a task that used to be incredibly expensive and time consuming, far more easy and economical.
There are several different types of smart pigs utilized in ILI activities, each with its own set of advantages and disadvantages. Some are more effective at detecting certain types of corrosion or damage in different types of pipes, depending on their NDE capabilities. More recently though, some manufacturers are combining the various functions of these separate tools into one. This way a single tool can now be used to detect several different types of damage, making it more efficient and effective.
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Hydrostatic Testing Nondestructive Testing (NDT) Visual Inspection
Articles about In-line Inspection (ILI)
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BlogJanuary 9, 2019 By John Reynolds at Intertek
The 2019 API Inspection and Mechanical Integrity Summit will be kicking off later this month in Galveston, TX. This four-day event will begin with 14 high level training courses offered Monday, January 28th, and then a top notch conference and exhibition running from Tuesday, January 29th through Thursday, January 31st. If you've been then you already know; but if you haven't been, here are the top reasons you need to attend.
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November/December 2017 Inspectioneering JournalBy Elizabeth Allen at DNV GL, and Michelle Havlock at DNV GL
This article explains the Statistically Active Corrosion Assessment, which is a tool for determining appropriate and realistic corrosion growth rates which can assist pipeline operators in optimizing the value of in-line inspection data, remediation programs and excavation costs, and determine a re”‘inspection interval; all while maintaining safety.
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March/April 2017 Inspectioneering JournalBy Matt Ellinger at DNV GL
The purpose of this article is to describe the various in-line inspection (ILI) technologies that are currently available to the market. The pros, cons, and applicability of each type of tool will be discussed in greater detail.
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Gains with Advanced Data Assessment in ILI: Leveraging pipeline data to eliminate risk, prioritize and schedule necessary repairsMay/June 2015 Inspectioneering JournalBy Ian D. Smith, P.Eng. at Quest Integrity Group, and Michael McGee at Quest Integrity Group
For traditional in-line inspection (ILI) vendors, considering 21.4 miles of a piggable 4” diesel pipeline is typically not a big deal. However, significant threats like 3rd party damage and external corrosion seem to come with the territory in nearly any pipeline territory.
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Combining High Resolution In-Line Geometry Tools and Finite Element Analysis to Improve Dent AssessmentsMay/June 2015 Inspectioneering JournalBy Rhett Dotson, P.E. at Stress Engineering Services
Historically, regulations regarding dent severity have been governed by one of two metrics: dent depth or strain. In the case of the former, plain dents with a depth up to 6% of the nominal diameter are permitted in both gas and liquid pipelines. However, many operators typically set stricter limits on dent depth targeting those above a depth of 2% for evaluation.
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May/June 2015 Inspectioneering JournalBy Vibha Zaman, P.E. at Asset Optimization Consultants, and Peter Dsouza at LyondellBasell
Direct assessment is often seen as the best option to verify pipeline integrity. But, it's particularly challenging due to the difficulty of pipeline access, as well as the limitations in available technology to perform subsea wall thickness inspections. Addressing these challenges requires action rather than reaction.
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Videos related to In-line Inspection (ILI)
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Sponsored Video Published on June 14, 2017Effective pipeline integrity management has been problematic for a large number of pipelines that were not designed for in-line inspection. Quest Integrity understands the complexities involved with this challenging segment and offers a comprehensive pipeline integrity management solution.
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Sponsored Video Published on May 15, 2017InVista Subsea, an advanced ultrasonic ILI tool from Quest Integrity, provides a solution for challenging and difficult-to-inspect subsea pipelines.
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Events related to In-line Inspection (ILI)
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April 10 - 11 2019Location: Phoenix, Arizona, United States
Hosted By: American Petroleum Institute
Dates: April 10, 2019 - April 11, 2019
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Apr 29 - May 3 2019Location: Galveston, Texas, United States
Hosted By: Refining Community
Dates: April 29, 2019 - May 3, 2019
Conferences Exhibitions & Trade Shows Training Courses -
June 11 - 12 2019Location: Houston, Texas, United States
Hosted By: Petrochemical Update
Dates: June 11, 2019 - June 12, 2019
Conferences Exhibitions & Trade Shows -
May 21 - 24 2019Location: Grapevine, Texas, United States
Hosted By: American Fuel & Petrochemical Manufacturers (AFPM)
Dates: May 21, 2019 - May 24, 2019
Conferences Exhibitions & Trade Shows Seminars & Workshops -
May 6 - 9 2019Location: San Antonio, Texas, United States
Hosted By: American Petroleum Institute
Dates: May 6, 2019 - May 9, 2019
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