Investigation of source energy effect on the quality of counting profile obtained using gamma scanning technique in troubleshooting of a lab-scale tray type column

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10.22052/4.4.21

Abstract

The source energy effect on the quality of counting profile obtained using gamma ray scanning technique was investigated. A lab-scale tray type column (one-pass tray type with 51 cm diameter) along with a 1×1 inch NaI(Tl) has been applied to investigate the source energy effect. MCNPX Monte Carlo code was used to simulate the column in normal and abnormal operating conditions. Cs-137 and Co-60 sources were used to investigate the source energy effect. The simulation results of the column scanning were validated by experimental measurement results. Based on the outcomes, Cs-137 leads to a better statistics and the foaming defect is better distinguished using Cs-137 compared with Co-60.
 
 

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References

[1] P. Walinjkar, and G. Singh. Dual energy gamma scanning technique to analyze condition of distillation columns, Indian Journal of pure & Applied Physics, 49 (2011) 669-672. [2] H. Shahabinejad, S.A.H. Feghhi, M. Khorsandi. Structural Inspection and Troubleshooting Analysis of a Lab-Scale Distillation Column Using Gamma Scanning Technique in Comparison with Monte Carlo Simulations, Measurement, 55 (2014) 375-381. [3] International Atomic Energy Agency (IAEA), Industrial Process Gamma Tomography, (2008). [4] J. Abdullah, Gamma-ray scanning for troubleshooting, optimization and predictive maintenance of distillation columns, Hydrocarbon Asia, (2005) 62-65. [5] H. Shahabinejad, S.A.H. Feghhi, and M. Khorsandi. Impact of Measurement Approach on the Quality of Gamma Scanning Density Profile in a Tray Type Lab-Scale Column, Radiation Measurements. 61 (2014) 1-5. [6] H. Shahabinejad, S.A.H. Feghhi. Design, optimization and performance of sourceand detector collimators for gamma-ray scanning of a lab-scale distillation column, Applied Radiation and Isotopes 99 (2015) 25-34. [7] H.G. Hughes. MCNPX TMx 2.4.0, User´s Manual – Version 2.4.0, Los Alamos National Laboratory, LA-CP-02-408, (2002).
Journal of Radiation Safety and Measurement
Volume 5, Issue 4 - Serial Number 16
December 2016
Pages 21-26

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