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Benefits of AET
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AET
benefits the user in the following ways:
Global Monitoring -
AET is not geometry sensitive and thus detect AE signals from considerable distances
making it an ideal tool for the global monitoring of large structures. Once a problem
area is found it can be verified/inspected using other NDT methods.
On line testing - This
is a big plus when having to do an inspection and the unit to be tested cannot be brought
off line such as the case with de-aerators etc. For most storage vessels however the
testing is possible by filling it with product, controlling the temperature or introducing
a gas into the vapor space. Depending on the process other parameters can also be
used for a successful test.
Not overly intrusive -
In the case of an insulated vessel only small holes are required for sensor
mounting. On high temperature applications wave-guides are used to make contact with the
vessel surface. The sensors are mounted outside the vessel insulation and temperature is
dissipated via the wave-guide.
Quick turn around -
The use of AET gives a vast amount of information in real time and takes only a couple of
hours (in some cases even less) to perform. The information gained from such a test can
now be utilized to better plan and schedule maintenance, improve integrity of the plant
overall and reduce plant maintenance costs considerably.
Data availability -
The data from the test is stored on computer hard drive/disk and can be made available to
the client with the written report upon request. This provides permanent record of the
test, which can be revisited and reanalyzed at any time in the future. It also gives a
good reference for future tests in that they can be compared to one another, making it
easy to see if a suspected problem is getting worse or not.
In
Conclusion:
AET
can be used on virtually any material as long as the proper studies are done to determine
the correct sensor spacing and care is taken to use the right wave velocity for the
structure under test. Location of suspected areas can usually be done quite accurately if
the above is adhered to, giving you the ability to do a global test as part of regular
maintenance, before or during a shut down, or even after a shut down to see if repairs
made was successful. AET can also be used as a very helpful tool on newly manufactured
vessels enabling you to get a “fingerprint” of the vessel, which can now be used
in subsequent tests for correlation as is the case with in service vessels, pipelines,
storage tanks etc.
Acoustic
Emission Testing has many successful applications used in the Petrochemical Industry that
has assisted our customers in preventing premature equipment failures, unnecessary down
time, delays in service and loss of revenue.
We
believe that our company will have both the experience and the capabilities to provide you
with a superior AE field-testing service as we have an increasing number of qualified
personnel who are skilled at conducting professional AE services.
ATT
now provides over 38 years of experience in this specialized field and operates
with offices in Arizona, California and Hawaii.
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