IMASI23 ABB Bailey distributed control system industrial DCS module card

Description

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The contamination level of the oil (from clean and
new to practically black and highly contaminated
with particles present) →7, temperature (from -5 °C
to 27 °C) and the impact of the robot on the oil
were examined. The findings show that the oil
maintains its integrity throughout the inspection
process if procedures are followed.
It is known that remotely operated vehicle (ROV)
propulsion systems often generate bubbles
through cavitation. Design elements were
carefully included to prevent this. For example,
the propulsion system of the robot can be a
source of cavitation. A stroboscopic investigation
of the propeller was performed at all possible
rotational frequencies to evaluate this process.
There were no gas bubbles detected, even in
areas likely to act as cavitation nucleation sites
such as the leading edge of the propeller or the
gap between the propeller and shroud.
Pilot system inspections were conducted under
various conditions and temperatures; the result
was a dramatic reduction in inspection time
to less than two-hours. Clear and accurate
images were taken →8, recorded and provided
to the customer in the form of a detailed
report that documents the inspection. All
relevant information could be shared with
experts worldwide in near-real-time. This
capability ensures customer will have the right
diagnosticians to deal with any transformer
issues encountered. TXplore inspection allows a
return to service with confidence that the future
plan of operation or repair of the transformer
asset can be maintained.

Case study
Robotic inspection test results have been
reaffirmed by transformer inspections conducted
in 2016 at the St. Louis power transformer factory
on production transformers and on a critical
substation that provides power to the highvoltage test facility →9.
Additionally, American Electric Power (AEP),
a large utility in the United States, viewed a
demonstration of a remotely driven robot
inspection of a tank at ABB Customer World in
March, 2017. AEP approached ABB about the
possibility of performing an inspection of one
of their large power transformers that would be
taken out of service.
During the summer of 2017, ABB’s development
team brought the robot and control and recording
equipment to the AEP station and successfully
performed an internal inspection of a transformer
that was more than 50 years old without the
need for any oil handling. TXplore successfully
inspected the transformer and ABB could verify
the benefits of effective mobility of the robot,
visualization ability and collaboration potential,
both remote and local, as well as the efficient
overall operation.