ANDT Oil and Gas Brochure - MISTRAS Group, Inc.
ANDT Oil and Gas Brochure - MISTRAS Group, Inc.
ANDT Oil and Gas Brochure - MISTRAS Group, Inc.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
TANKS 2<br />
TankPAC<br />
Specific tank related damage mechanisms are:<br />
• Internal <strong>and</strong> external corrosion of roofs,<br />
floors <strong>and</strong> shells<br />
• Weld <strong>and</strong> weld heat affected zone<br />
integrity<br />
• Structural deficiencies (Settlement<br />
Surveys, Out of Roundness, Strapping)<br />
Advanced techniques used to determine the above<br />
damage mechanisms are:<br />
ACOUSTIC EMISSION TANKPAC<br />
<strong>MISTRAS</strong> utilizes a proprietary methodology for<br />
evaluating the condition of tank floors using<br />
Acoustic Emission (AE) while the tank is in service.<br />
An overall condition assessment is performed <strong>and</strong><br />
individual areas of concern are noted to pinpoint<br />
follow up areas to inspect during a subsequent<br />
Out of Service inspection.<br />
TALRUT: ULTRASONIC TANK ANNULAR LONG<br />
RANGE INSPECTION<br />
Utilizing our proprietary LSI system, we are able<br />
to generate semi-quantitative data regarding the<br />
tank floor integrity adjacent to the shell to floor<br />
weld. This inspection technique encompasses<br />
approximately 10” into the tank floor from the<br />
exterior of the tank using an ultrasonic technique<br />
<strong>and</strong> a proprietary algorithm. The annular area of<br />
the tank is critical to the support structure, <strong>and</strong><br />
safe operation of the tank.<br />
TALRUT<br />
www.mistrasgroup.com | +1.609.716.4150 | sales@mistrasgroup.com<br />
TIME-OF-FLIGHT-DIFFRACTION (TOFD)<br />
Ultrasonic TOFD is a rapid survey tool used to<br />
evaluate the shell <strong>and</strong>/or roof weld <strong>and</strong> weld heat<br />
affected zone looking for original fabrication type<br />
defects, or in service corrosion occurring in the<br />
heat affected zone. Follow up phased array inspection<br />
may be required in any area that exhibits<br />
potential damage discovered through the TOFD<br />
inspection.<br />
AUTOMATED ULTRASONIC LSI<br />
The ultrasonic LSI is a rapid erosion/corrosion<br />
scanning tool used for ultrasonic “drops” down<br />
the tank shell or the roof. The device is magnetically<br />
attached to the tank <strong>and</strong> operated remotely.<br />
The amount <strong>and</strong> quality of data is far superior to<br />
ultrasonic thickness readings, in that actual trending<br />
can be visualized as in the case of liquid to air<br />
interface corrosion. In the case of roof readings,<br />
the ability to attach the scanner enhances the<br />
safety of the project, as there is no need to access<br />
the roof by inspection personnel.<br />
C e n t e r s o f E xc e l l e n c e<br />
Tank Inspection<br />
LSI<br />
• Avoid opening tanks <strong>and</strong> eliminate<br />
costs associated with cleaning <strong>and</strong><br />
waste disposal.<br />
• <strong>Inc</strong>rease probability of detecting<br />
corrosion using LSI high speed<br />
corrosion mapping<br />
• Enhance safety using remote crawlers<br />
on roofs.