Specifications

Section 1 Acoustic Emission
 SYSTEMS
The use of Acoustic Emission to save costs and reduce down time on a plant.
We believe that our range of Acoustic Emission equipment, by Physical Acoustics Ltd, could have significant
benefits to your organisation. Coupled with the cost effectiveness of acoustic emission this technique has become
ever more popular the world over. The majority of tests carried out using Acoustic Emission (AE) is MONPAC and
TANKPAC.
TANKPAC
The cost of shutting down and cleaning storage tanks ready for internal inspection is costly and timely. If no
repairs are required the costs have been largely wasted and could have been better spend on other projects, or
not at all.
PAC, together with it's major customers have developed a method of evaluating overall floor condition without
removing the tanks from service. The evaluation is based on experience from follow up internal inspection and in
many case the floor scanning of tanks monitored under carefully controlled conditions.
TANKPAC is not an inspection method, but a sorting system which can separate good tanks from bad ones and
in so doing concentrate maintenance where it is most needed. Highly sensitive sensors are placed along the
perimeter of the tank wall. Following a period of conditioning during which the valves are closed and the
heaters/agitators are turned off the tank is monitored for a period of time. The fracture of corrosion products is
detected together with leaks which are active during the monitoring phase. Defects may be located using a
method of triangulation however the most important information from a maintenance point of view is the overall
condition of the tank floor which is graded by the AE software from "A" to "E". A being the best result and E being
the worst.
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