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14 06, 2020

How Can Pipeline Operators Evaluate Novel Non-welding Repair Technologies?

Flaws and defects in pipelines can result in significant problems. Fortunately, a new generation of tools are now available to detect circumferential crack-like features. Once detected, pipeline operators have a few options to repair these flaws: Replace the section of pipe; Weld a metal sleeve over an extended area; or Use any one of many possible non-welded repair technologies. One main challenge for operators is choosing the right repair solution for their specific operating conditions. Why Not Repair the Flaw with Traditional Welding? Welding a metal sleeve is the traditional approach, but it can also create problems. Welding [...]

11 03, 2020

3D Visual Image Correlation

Non-contact Strain Measurement Digital Image Correlation technology provides three-dimensional (3D) measurements of shape, global displacement and relative displacement (strain) on the surface an object using an optical method. Generally, Digital Image Correlation systems involve two or more imaging sensors (i.e. cameras) to provide sufficient information to for the software to triangulate and track objects in three dimensions. With the help of a randomized speckle pattern applied to the object’s surface, Digital Image Correlation systems can resolve displacements into continuous stress and strain measurements within the area of focus. Some of the main advantages of Digital Image Correlation [...]

10 03, 2020

On Water Leak Detection

Detecting Oil Spills on Inland Waterways Pose Significant Challenges Detecting oil spilled on inland waterways poses a significant challenge to pipeline operators due to: Changing water levels and flow rates; Presence of debris and suspended sediment; Floating and submerged oil; Ice cover for large portions of the year; and Remote locations with no supporting infrastructure. Bringing Value to Technology Evaluation by Simulating Realistic, Full-scale Conditions in a Controlled Environment The project will identify potential technologies and set up realistic, full-scale trials to help operators select the best technology to rapidly and reliably detect oil spills on inland waterways. [...]

3 03, 2020

Strain Based Design

How to Limit Permanent Pipeline Deformation when Conventional Methods Can't be Applied Ground movements or constrained thermal expansion can cause stresses in a pipeline or other structure to exceed the yield strength of the pipe material, resulting in permanent deformation of the pipe. Conventional stress-based design methods would suggest that higher strength materials and thicker pipe walls are required to limit the stress in these pipes; however, in many cases, these designs become impractical due to the cost or size of the pipe. A design approach is required to provide cost effective designs for the desired service life in [...]

26 02, 2020

Monte Carlo Simulation of Corrosion

Consider all Uncertainties in Your Data C-FER Technologies uses Monte Carlo simulation and statistical models to consider the uncertainty in all of your data. Below is a basic implementation of Monte Carlo simulation used to evaluate the burst pressure of corrosion features. Set the size and sizing accuracy of a corrosion feature and see how the simulated burst pressure distribution compares to the nominal deterministic value. You can also modify the burst pressure model and the number of simulations ran.

26 02, 2020

Historical Failure Rates

Visualize Your Data C-FER Technologies can leverage historical data to assist in identifying potential threats to your assets. Interactive, web-based visualizations allow you to make quick and meaningful insights based on your data or the results of C-FER’s assessments. The following visualization explores PHMSA Incident data. Use the slider to adjust the charted year from 1968 to 2019. Incidents are categorized based on their product, type and cause. Significant shifts in the data can be seen over years with changing reporting practices, such as in 1970 and 1984. [...]

26 02, 2020

PIRAMID Tutorial – Considering Line Failure History

CONSIDERING LINE FAILURE HISTORY - PIRAMID TUTORIAL Watch the PIRAMID tutorial video below to learn how to incorporate line specific failure history when using PIRAMID’s historical-based probability estimation modules. Using a Bayesian technique, PIRAMID’s baseline historical failure rates can be adjusted with the failure history of the line being analyzed.

22 02, 2020

Airborne Leak Detection

Introducing Leak Detection Systems for Monitoring Pipeline Operations Pipeline operators are interested in using a variety of leak detection systems to ensure the safe operation of their pipelines. Among the systems being considered are various detectors that can be mounted on aircraft that can augment the regular right-of-way inspections that are already being conducted. Some technologies are already used to detect leaks from natural gas pipelines; however, leaks from liquid pipelines can be more difficult to detect due to the behavior of the liquid hydrocarbon as it enters the soil. The challenge is to detect small liquid hydrocarbon leaks [...]

22 02, 2020

Low Temperature Operations

Accounting for the Harsh Effects of Cold Temperature Operations Operations in the Arctic and cold weather regions are challenging due to embrittlement of components, and generation of significant thermal stress loads, which can lead to structural cracking and failures under otherwise normal loading conditions. Temperature variations also change the elasticity and dimensions of sealing components leading to reduce performance and leaks.   For example bladder accumulators stiffen at cold temperatures, limiting their performance in safety systems such as blow out preventers and transient pressure suppression systems on pipelines. Rapid changes in equipment temperatures can cause differential expansion of components leading [...]

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