Press

An overview of the benefits of a field-proven subsea CT scanner


The effective maintenance of subsea pipelines is absolutely vital to those working within the gas and oil industries.  From complying with legal regulations, as well as making sure that offshore operations are carried out safely – subsea pipeline inspection is paramount.  Flow assurance equipment must be reliable and accurate and be able to find pipeline integrity issues quickly as well as calculate wall thickness to a high degree of accuracy. All of this must be obtained with minimal disruption to the pipelines in operation.

‘Hotspot' inspection problems

Issues in subsea pipeline maintenance can arise as techniques such as in-line inspection aren't always feasible. In this instance, operators may fall back on ‘hotspot' inspections in localised areas. From this, more inspections can be carried out — but it isn't efficient nor cost-effective to do this.

With a field-proven subsea CT scanner, operators do not have to waste time on these hotspot inspections. Instead, the software can find defects and inform the operator whether or not these issues are impacting the pipeline enough to push it out of its specified tolerance. With these issues accounted for, operators can then undertake a more detailed scan of that area, rather than extending the scanning scope blindly after hotspot inspections.

Inspecting all coating types  

A field-proven subsea CT scanner using a non-intrusive method of scanning has the benefit of being able to work with any coating or covering the pipeline may have. One such subsea pipeline inspection scanner, Discovery, can scan for wall thickness in a number of different pipeline systems, from risers, piggyback lines, and pipe-in-pipe. The below shows how Discovery software does this in one, real-time scan:

Lloyd's Register recognition benefits

With third-party recognition from maritime classification society Lloyd's, another benefit of using field-proven subsea CT scanners such as Discovery is the wealth of experience and reliability it has already amassed. For example, with over 2,000 scans and numerous accurate readings and findings in its repertoire, this scanner can surely help operators in the industry the world over. Not only does implementing such a scanner help save time, it also helps financially — operators could see savings of up to 1/3 on inspection campaigns by using a more accurate method than traditional scanning or hotspot inspections.



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