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Yokogawa developed a prototype sensor that conducts noncontact measurements of pipe defects using the magnetic field around the pipe, and demonstrated the "proof of concept" at a customer's plant. The following is an example of such a proof of concept.
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The figure below shows the magnetic field around the pipe measured by our sensor and the position and depth of a defect calculated from the magnetic field. Through ultrasonic inspection, Yokogawa was able to confirm that the magnetic field sensor succeeded in noncontact detection of the defect in the pipe.
Corrosion Detection and Monitoring - Conventional Ultrasonic Inspection (UT)
Yokogawa believes it can offer the following value to customers with its pipe defect monitoring system. Regular monitoring of pipe defects makes it possible to predict the life of the pipes.
Consequently, appropriate action can be taken on deteriorating pipes. In addition, by examining the operational period during which the trend in pipe defects changed, it is also possible to take more rigorous measures by locating the root cause of the pipe deterioration. Tamanho de fonte.
lmypmoonetho.tk Resumo Internal corrosion is one of the major problems affecting the integrity of pipelines and process equipment. For this reason, the internal corrosion monitoring becomes essential to anticipate eventual problems and select the most appropriate strategy to mitigate the corrosive process. Due to the problems related to the cost, logistics and safety inherent to coupon and electric resistance ER probe retrieving, it is very important to seek alternatives to the current methods, in order to optimize the monitoring tasks.
The use of non-intrusive equipment NIE to monitor internal corrosion is an alternative that aims to optimize this step, as well as NIE has easy installation and maintenance, higher data reliability and faster results. These systems consist of estimating the trend of the corrosion rate through devices installed on the external side of pipelines without the need of access fittings, unlike conventional techniques. The great advantage of using this technique is the absence of interventions for components retrieving, minimizing operational risks.
To evaluate such equipment, tests were carried out under dynamic conditions, varying the fluid characteristics in order to verify the speed of response of some commercial devices, always comparing them to conventional methods coupon and ER probe.