How to quickly find a stuck PIG in your subsea pipeline

Posted by Tracerco

Jul 21, 2016 3:20:31 PM


It's a nightmare scenario no one wants... You run a PIG and it becomes stuck in the line. You now have an unsuccessful pigging campaign, a subsea pipeline blockage, and a missing PIG to deal with.

The cost of a shutdown due to a PIG stuck in a subsea pipeline can run into tens of millions in lost production, which is why it is absolutely critical to remedy the situation as quickly as possible. In this post we will examine the first step to remedying a blocked subsea pipeline due to a stuck PIG; that is locating the stuck PIG.


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Topics: Explorer, pipe in pipe, Flowlines, Subsea Technology, scanning technology, subsea pipelines, pipeline inspection, pipe bundles, subsea flowlines, pigging, stuck pig, Flow assurance, pipeline blockage

How to diagnose liquid maldistribution in packed beds: A case study - Part 2

Posted by Nicola Porter

Jun 8, 2016 11:35:29 AM

This post is the second part of the "Diagnosing liquid maldistribution inside packed beds" series.

In the previous blog, we explained how Tracerco’s Tru-Grid™ Scan technologies can be used to diagnose suspected maldistribution in packed beds. In Part 2, we will discuss how we obtain more details on distribution within the packed bed.

A challenge to process engineers is diagnosing liquid maldistribution problems inside packed beds that can cause severe mass transfer efficiency loss. In industrial distillation columns, common examples of the cause of liquid maldistribution are design, manufacture or installation defects of distributors as well as damage, plugging and process disturbance of packed beds.

In this latest blog we will explain how following a Tru-Grid Scan, Tracerco’s ThruVision technology was able to obtain a more detailed liquid distribution profile of the packed bed.

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Topics: optimising plant processing, plant processing, scanning technology, Process Diagnostics, distillation column, Distillation Column Performance, packed column performance, distillation tower scanning, annular liquid distribution, Liquid maldistribution, packed column, Suspected maldistribution, distillation column maintenance, ThruVision scan, Tracerco technologies, Suspected maldistribution in packed beds, ThruVision

How to diagnose liquid maldistribution in packed beds: A case study - Part 1

Posted by Nicola Porter

May 12, 2016 8:52:49 AM

This post is the first of the "Diagnosing liquid maldistribution inside packed beds" series.

A challenge to process engineers is diagnosing liquid maldistribution problems inside packed beds that can cause severe mass transfer efficiency loss. In industrial distillation columns, common examples of the cause of liquid maldistribution are design, manufacture or installation defects of distributors as well as damage, plugging and process disturbance of packed beds.

In this latest blog, we will explain using a case study approach how Tracerco's scanning technologies can be used to diagnose suspected maldistribution in packed beds.

The first step to determine liquid maldistribution in a packed column is to perform a Tracerco Tru-Grid™ Scan to provide an initial look at the liquid distribution in the packing.  A Tru-Grid™ scan consists of four equal-distant chords, one through each quadrant of the tower. Under ideal conditions and uniform liquid loadings, each scan plot will overlay closely with all others.

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Topics: optimising plant processing, process systems, plant processing, scanning technology, Process Diagnostics, Gamma Scanning, Distillation Column Performance, packed column performance, distillation tower scanning, annular liquid distribution, Liquid maldistribution, packed column, Tru-Grid Scan, distillation column maintenance, Tracerco technologies, optimising plant production, Suspected maldistribution in packed beds

How to measure material levels in vessels for fouling deposits:case study

Posted by Nicola Porter

Jul 6, 2015 4:08:00 PM

A problem plaguing butadiene purification unit operations is the potential for free radical polymerisation, commonly known as popcorn polymer. This popcorn polymer formation can disrupt the operation of the unit by plugging lines, sticking valves, and even physically damaging equipment. Under certain conditions the polymer growth can push apart flanges, rupture lines and even pop the head off exchangers.

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Topics: optimising plant processing, popcorn polymer, process systems, providing insight onsite, neutron backscatter, process vessels, plant processing, scanning technology, heat exchanger, butadiene purification unit, Process Diagnostics, exchanger, solids buildup, fouling deposits, polymerisation, butadiene condenser

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