Optimizing the Nuclear Concentration Measuring System of the Cutter Suction Dredger Using MCNPX Monte Carlo Code
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Using a dredger to remove mud and garbage accumulated in the river or sea docks is a common and important process. In order to monitor the condition of sediments on the sea bed, it is necessary to use an online measurement system for the concentration of transfer slurry from the floor to the surface. The nuclear-based systems have this important and operational capability to provide the possibility of online monitoring of the passing slurry by installing it on the pipeline without causing any disruption in the transfer process. The concentration measurement system of the cutter-suction dredger uses the combination of two nuclear and non-nuclear parts to measure the fluid parameters desired by the client, such as the volumetric and mass flow rate of the two-phase fluid and its components. In using hybrid systems for this purpose, basic conditions such as online measurement capability, non-physical, chemical or environmental interference in the passing flow, compatibility with the operational conditions of temperature, pressure, humidity and vibrations in the dredging site, measurement accuracy should be met and safety principles should be considered. In this study, using Monte Carlo simulation with MCNPX code, the effect of different geometrical and dimensional parameters of output gamma ray collimator on the accuracy of measuring the concentration of passing slurry was investigated, and with the considerations related to personnel radiation safety, the final optimal mode was proposed. The decrease in the placement depth of the horizontal spring inside the beam is associated with the simultaneous maximum of gradient and count statistics. In all of the mentioned situations, the opening of the conical beam-forming aperture has a higher sensitivity and resolution compared to a rectangular one.
Keywords:
Language:
Persian
Published:
Journal of Modeling in Engineering, Volume:22 Issue: 79, 2024
Pages:
243 to 254
https://www.magiran.com/p2823279
سامانه نویسندگان
از نویسنده(گان) این مقاله دعوت میکنیم در سایت ثبتنام کرده و این مقاله را به فهرست مقالات رزومه خود پیوست کنند.
راهنما
مقالات دیگری از این نویسنده (گان)
-
Conceptual Design of a Static-Equivalent Device for Different Multi-Phase Flow Regime Preparation
M. Sharifzadeh *, M. Askari
Journal of Nuclear Research and Applications, Spring 2025 -
Simulation and Two-phase Void Fraction Measurement Utilizing Gamma Technique in Conjunction with Flat Panel Detector
Mojtaba Askari, Amirmohammad Beigzadeh, *
Petroleum Research,