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762 views
09:53 Aug-02-2005
Andre van Vuuren
Lazer on Internal Pitting Corrosion

Hi
Just how accurate is lazer scanning on the bore of 1" & 3/4" carbon steel tubing that is severly pitted on the internal surface.

Regard
Andre



 
06:24 Aug-03-2005

Rich Roberts

Engineering, Executive Managment
Quest Integrity Group,
USA,
Joined Nov 1998
78
Re: Lazer on Internal Pitting Corrosion Good Day Andre van Vuuren,

The laser scanning technologies are very accurate when measuring depth and area dimensions of small internal pitting. The laser beams diameter is typically 0.010” (0.25mm) which enables a pit with a area diameter as small as ½ the beam with or 0.005” (0.127mm) to be resolved. The depth measurement accuracy is typically +/-0.002” (0.05mm).

About 5-6 years ago the Electrical Power Research Institute (EPRI) and Materials Technologies Institute (MTI) did a joint study comparing the LOTIS ‘laser” method to IRIS, ET, MFL, RFET and others. During this study the LOTIS was found to be the superior method on internal pitting in tube diameters between 5/8” (16mm) to 2” (51mm). Many other comparison studies by major oil companies have come up with similar results.

We commonly apply the LOTIS laser technology in tubes with diameter ranging from 5/8” (16mm) and 6” (152mm). If you would like any further details, please feel free to forward the questions.

Regards, Rich

----------- Start Original Message -----------
: Hi
: Just how accurate is lazer scanning on the bore of 1" & 3/4" carbon steel tubing that is severly pitted on the internal surface.
: Regard
: Andre
------------ End Original Message ------------




 
09:00 Aug-06-2005

James Doyle

Consultant
Laser Techniques Company, LLC,
USA,
Joined Jan 2003
6
Re: Lazer on Internal Pitting Corrosion ----------- Start Original Message -----------
: Hi
: Just how accurate is lazer scanning on the bore of 1" & 3/4" carbon steel tubing that is severly pitted on the internal surface.
: Regard
: Andre
------------ End Original Message ------------

I would also suggest that you visit www.Laser-NDT.com

Laser Techniques Company is a leader in the field of laser-based NDT

Best regards,

James Doyle



 


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