Thepmanee, Teerawat

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Thepmanee, Teerawat
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teerawat.th@kmitl.ac.th

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    Foundation fieldbus-based laboratory: A case study of Harmonas-DEO system
    (2011-01-01)
    Thepmanee, Teerawat
    ;
    Pongswatd, Sawai
    ;
    Julsereewong, Amphawan
    ;
    Julsereewong, Prasit
    This paper presents a Foundation Fieldbus-based laboratory for education of automation infrastructure. Design and implementation of a level-control plant model using multi-vendor field devices is proposed. Harmonas-DEO fieldbus system is described as an illustrative case study for configuring and commissioning fieldbus segment, defining control strategy, designing human machine interface (HMI) screen, and troubleshooting. Fieldbus control valve diagnostics based on the use of Valstaff are also included. © 2011 SICE.
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    Sil assessment for tail gas treating process using layer of protection analysis
    (2018-06-01)
    Poomhuang, Jirawat
    ;
    Julsereewong, Prasit
    ;
    Thepmanee, Teerawat
    A tail gas treating process is one of pollution control processes in refineries and natural gas processing plants required to manage process safety. Based on IEC 61511 safety lifecycle, the safety must be maintained during all design, operation, and maintenance activities. This paper addresses an allocation of specific functions performed by a safety instrumented system (SIS) to protection layers in analysis phase of the safety lifecycle for the studied tail gas treating process. An application of layer of protection analysis (LOPA) process to evaluate three scenarios identified in a prior hazard and risk assessment by using a hazard and operability (HAZOP) study is proposed. The results obtained from the proposed assessment are the specifications of the safety function requirements and the safety integrity requirements. The safety integrity level (SIL) determination results can be utilized as the criterions for the safety instrumented function (SIF) design and engineering in order to conform the required SIL.
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    Waste-heat thermoelectric power source for industrial wireless transmitters
    (2010-07-30)
    Thepmanee, Teerawat
    ;
    Julsereewong, Prasit
    ;
    Taratanaphol, Naruchit
    This paper presents Seebeck effect-based thermoelectric power source utilizing waste heat in manufacturing processes for industrial wireless transmitters. An industrial wireless transmitter can be supplied by its internal battery in combination with the proposed thermoelectric power source to conserve battery lifetime. Moreover, the proposed power source can operate as the backup power supply for new battery replacement without tuning the transmitter off. Experimental results showing the capacity to power a Rosemount 3051S wireless pressure transmitter as a target application example are also included.
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    Improving process data reporting system using IT process automation software in sulfuric acid production
    (2012-12-01)
    Sookjadit, Sakchai
    ;
    Thepmanee, Teerawat
    ;
    Julsereewong, Amphawan
    ;
    Julsereewong, Prasit
    This paper presents a method to improve process data reporting system in a sulfuric acid plant, which faced difficulties in accessing historical process data for effective use in process engineering, production management, quality management, and maintenance system. The proposed method running on existing distributed control system is based on the use of an IT process automation software called OpalisRobot to provide scheduled logging, reporting, and e-mailing criteria and quality control parameter files. Experimental results verify that not only ease of accessing and reporting electronic documents for use of production data and some economic benefits of the proposed work can be obtained, but also errors caused by manual records affecting to final product quality, environmental quality, instruments, safeguarding process equipments, and operator safety can be reduced. © 2012 ICROS.
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    Design and implementation of the laboratory for foundation Fieldbus-Based industrial automation
    (2012-05-01)
    Thepmanee, Teerawat
    ;
    Pongswatd, Sawai
    ;
    Julsereewong, Amphawan
    ;
    Julsereewong, Prasit
    This article focuses on a design and implementation of the laboratory for education of Foundation Fieldbus-based industrial automation. A Centum VP system connected with level-control plant model via field digital network is described as an illustrative case study for configuring and commissioning fieldbus segment, defining control strategy, designing human machine interface (HMI) screen, and troubleshooting.
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    Process alarming in PID loop using foundation fieldbus with control in the field: A case study of DeltaV host system
    (2014-01-30)
    Arayawat, Suvishchan
    ;
    Thepmanee, Teerawat
    ;
    Julsereewong, Prasit
    ;
    Julsereewong, Amphawan
    This paper presents a software configuration guideline for process alarming in proportional-integral-derivative (PID) loop using Foundation Fieldbus (FF) with control in the field. Process alarm configuration of FF H1 segment installed in a level-control plant model and operated by the DeltaV host system is examined as an illustrative case study. Experimental results showing relations between alarm configuration and alarm notification of the studied system are included. The proposed practical guideline can be applied to develop a good fieldbus system alarm strategy for industrial processes.
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    Replacement of existing analog with digital fieldbus: A case study of raw cane sugar production
    (2013-03-28)
    Thepmanee, Teerawat
    ;
    Julsereewong, Amphawan
    ;
    Julsereewong, Prasit
    ;
    Jetanacheawchankij, Chaiwat
    This article focuses on a digital fieldbus replacement for existing analog communications to bring automation infrastructure for operational excellence. Economic analysis between conventional and Foundation Fieldbus systems for new instrumentation and control installations in a raw cane sugar production is described as an illustrative case study. Surpassing the traditional analog system during project implementation, the digital fieldbus provides saving in material, installation, and commissioning costs. The studied case can be applied as a useful tool that can support planning and decision making for any small or large upcoming projects. © 2013 ICIC International.
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    Design of functional safety model for tail gas treating process
    (2016-01-24)
    Poomhuang, Jirawat
    ;
    Julsereewong, Prasit
    ;
    Thepmanee, Teerawat
    This paper addresses the design of functional safety model for process automation in accord with IEC 61508/61511 standard. Functional safety design of a tail gas treating unit has been conducted in this study. The quantitative fault tree analysis approach which has been proved to be acceptable and widely applied in many applications of modeling and methods supporting the designer and safety engineer not only to identify how subsystems and components could fail and what are the corresponding effects on the whole system, but also to quantify the reliability parameters for complex systems. The analytical evaluation of the probability failure on demand and the failure rate for the system, all these component are supposed to be not repairable and the probability distributions of time to failure random variables are assumed to be exponential function. The calculation result is used as the criterion for the safety instrumented function design in order to conform the required safety integrity level. The experimental show that the subsystem architecture of safety instrumented function has a significant impact on improving the average probability of failure on demand of the process.
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    LabVIEW-based system for testing centrifugal pump efficiency
    (2017-11-10)
    Aiamsamang, Somkit
    ;
    Thepmanee, Teerawat
    ;
    Julsereewong, Prasit
    ;
    Julsereewong, Amphawan
    This paper presents a test system for testing efficiency of single-suction centrifugal electric pumps for quality control in a manufacturer's production line. The proposed system based on testing an individual pump for an expected total head provides automatic test procedures to be conducted in accordance with the requirements specified in the Thai Industrial Standard (TIS) 2618-2557. The hardware implementation consists of instruments for measuring process data and pump input parameters, controllers for maintaining test conditions and test procedures, and engineering/operator workstation. Pump testing, real-Time monitoring, data gathering, and test reporting of the implemented system are based on LabVIEW. Centrifugal pump manufacturers in Thailand can use the proposed test system for determining the efficiency of their products on assembly line before official product testing and certification or customer shipment.