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Paper Information

Journal:   INDUSTRIAL ENGINEERING & MANAGEMENT SHARIF (SHARIF: ENGINEERING)   SUMMER 2007 , Volume 23 , Number 38; Page(s) 67 To 74.
 
Paper: 

DETERMINING THE REQUIRED INFORMATION IN SCANNING OF THE OIL PIPLEINE CORROSIONS

 
 
Author(s):  RAVAN BOD H., BEHNIA F., JALALI A.
 
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Abstract: 

For nondestructive testing of oil pipelines, an ultrasonic scanning system moves inside the pipes by the aid of oil pressure and measures the existence and location of the corrosions by the sensors well mounted on it. With these gathered data, critical points along the pipeline can be detected and probable difficulties can be handled. In this method, measuring of the time between the original pulse and the reflected one shows the situation of the internal and external walls of the pipe and, at last, the thickness of the pipe wall. The reduction in this amount shows corrosion at that location. In this research, first, the fundamental affairs of ultrasonic scanning and the effective factors in achieving the desired accuracy are considered thoroughly. Then, the corrosion depth resolution, ultrasonic transducer bandwidth, corrosion length resolution and sampling frequency of the ultrasonic transducer along the pipeline were determined and extracted. Considering the accomplished designs and justifying the results with simulations, the results of this research can be applied in the designing and the feasibility study of oil pipeline scanning systems.

 
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