배관의 부식 상태 진단에 사용되는 ER 부식센서의 가속부식환경에서의 신뢰성 평가
Reliability Evaluation of ER Type Corrosion Sensor for Monitoring Corrosion of Piping System Under Accelerated Corrosion Environment
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초록
In this study, the reliability of a commercial ER-type corrosion sensor was evaluated under an acceleratedcorrosion environment to verify its suitability for application in monitoring of ship’s seawater piping system. A closed-loop pump piping testbed was designed and constructed to compare the wall thicknessreduction of the pipe and the response from the sensor. The sensor was attached inside the pipe near theoutlet of the pump that was exposed to a 3.5% NaCl solution with or without copper accelerated acetic acid(CASS). The results demonstrated that the presence of CASS significantly increased the corrosivity of thesolution as well as the thickness reduction of the pipe, as expected. On the other hand, the corrosion productsformed by the solution with CASS were thicker compared with those without CASS. The sensorresponse to temperature variation was found to be a clear linear relationship for the solution without CASSbut there was a non-linear relationship where CASS was present.
Abstract
In this study, the reliability of a commercial ER-type corrosion sensor was evaluated under an acceleratedcorrosion environment to verify its suitability for application in monitoring of ship’s seawater piping system. A closed-loop pump piping testbed was designed and constructed to compare the wall thicknessreduction of the pipe and the response from the sensor. The sensor was attached inside the pipe near theoutlet of the pump that was exposed to a 3.5% NaCl solution with or without copper accelerated acetic acid(CASS). The results demonstrated that the presence of CASS significantly increased the corrosivity of thesolution as well as the thickness reduction of the pipe, as expected. On the other hand, the corrosion productsformed by the solution with CASS were thicker compared with those without CASS. The sensorresponse to temperature variation was found to be a clear linear relationship for the solution without CASSbut there was a non-linear relationship where CASS was present.
참고문헌 (13)
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