Intrinsically Safe Camera

CorDEX Instruments to Donate £150000 of Equipment to University of Aberdeen ...

The deal will see CorDEX provide equipment and onsite training in the correct use of these groundbreaking oil and gas tools, which are certified for safe use offshore and in explosive environments.

Over the next three years, CorDEX will donate its latest handheld devices to the university. The ToughPIX digital camera and UT5000 Intrinsically Safe Thickness Gauge, which measures pipeline thickness to detect corrosion, are being supplied in the first phase.  A student will spend the summer using the UT5000  - the world's first pipeline tester designed for use offshore - in a research project.

Dr , head of chemical engineering within the Department of Engineering, welcomed the new partnership. He said: "CorDEX Instruments' tools are groundbreaking and we are excited about the prospect of having access to the equipment and also the expertise that the CorDEX team will bring to the department.

"The UT5000 Intrinsically Safe Thickness Gauge is of particular interest as I know first-hand how much of a challenge asset integrity and corrosion testing is for the oil and gas industry. To have access to a tool that can be brought offshore or into a plant at any time without having to wait for a scheduled shutdown has the potential to change the way operators work.

"The cost and time saving on the administration alone is staggering and if you add to that the value of the data the tool records and its ability to build predictive maintenance reports, the impact could be far reaching. It has the potential to improve safety inspections in ageing assets, which supports the Health and Safety Executive's KP4 inspection standards introduced last year."

is a leading educator of engineers in the UK and we are pleased to be involved in the cutting-edge research taking place there. We feel it is vital for students of this discipline to gain knowledge from current industry practice and we hope to achieve this through the partnership."

CorDEX aims to give the students a better understanding of the tools available in the workplace and the restrictions required when working within hazardous petrochemical environments.

MSc student will be putting the technology to use over the summer as part of his Subsea Engineering degree.

He said: "My dissertation on pipeline corrosion and reliability aims to build a model for corrosion patterns which will be used as part of the university's overall research on this area, and may even be adopted by industry. It is crucial to have accurate results and the equipment we had before wasn't very reliable or quick. The UT5000 will not only provide enhanced time efficiency but will also validate the outcomes of my research.

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Overview

Laser beam profiling instruments measure the following quantities:

Beam width: There are over five definitions of beam width.

Beam quality: Quantified by the beam quality parameter, M2.

Beam divergence: This is a measure of the spreading of the beam with distance.

Beam profile: A beam profile is the 2D intensity plot of a beam at a given location along the beam path. A Gaussian or flat-top profile is often desired. The beam profile indicates nuisance high-order spatial modes in a laser cavity as well as hot spots in the beam.

Beam astigmatism: The beam is astigmatic when the vertical and horizontal parts of the beam focus in different locations along the beam path.

Beam wander or jitter: The amount that the centroid or peak value of the beam profile moves with time.

Instruments and techniques were developed to obtain the beam characteristics listed above. These include:

Camera techniques: These include the direct illumination of a camera sensor. The maximum spot size that will fit onto a CCD sensor is on the order of 10 mm. Alternatively, illuminating a flat diffuse surface with the laser and imaging the light onto a CCD with a lens allows profiling of larger-diameter beams. Viewing lasers off diffuse surfaces is excellent for large beam widths but requires a diffuse surface that has uniform reflectivity (<1% variation) over the illuminated surface.

Knife-edge technique: A spinning blade or slit cuts the laser beam before detection by a power meter. The power meter measures the intensity as a function of time. By taking the integrated intensity profiles in a number of cuts, the original beam profile can be reconstructed using algorithms developed for tomography. This usually does not work for pulsed lasers, and does not provide a true 2D beam profile, but it does have excellent resolution, in some cases <1 m.

Historical techniques: These include the use of photographic plates and burn plates. For example, high-power carbon dioxide lasers were profiled by observing slow burns into acrylate blocks.

As of 2002[update], commercial knife-edge measurement systems cost $5,000$12,000 USD and CCD beam profilers cost $4,0009,000 USD. The cost of CCD beam profilers has come down in recent years, primarily driven by lower silicon CCD sensor costs, and as of 2008[update] they can be found for less than $1000 USD.

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