Kummool, Sart

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Kummool, Sart
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Email
sart.ku@kmitl.ac.th

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    Item type:Publication,
    Effective energy saving for cold rolling mill driven by large DC motors in steel production industry
    (2014-02-04)
    Kummool, Sart
    ;
    Julsereewong, Prasit
    ;
    Lerdlum, Nattawoot
    A useful technique to reduce power consumption for cold rolling mill driven by large direct current (DC) motors in steel production industry is introduced. The proposed method is based on automatically stopping cooling units and shunt-field winding exciters of DC motors for operating the mill in maintenance mode and long-time stand-by mode. The smart relay modules and normally-closed contractors used for energy saving are controlled via an existing direct digital control (DDC) system. Performance of the proposed technique has been observed at a Sendzimir cold rolling mill using the stand driven by three couples of 2,150 kW DC motors in Thailand. Experimental results show that the proposed method provides saving in energy cost in a short payback period. © 2014 ISSN 2185-2766.
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    Flow metering modification for avoiding control valve cavitation in hydrocarbon industry
    (2016-11-01)
    Pilaoon, Pongsak
    ;
    Kummool, Sart
    ;
    Julsereewong, Prasit
    ;
    Julsereewong, Amphawan
    This paper presents a practical technique for solving noise and vibration problems caused by control value cavitation in existing pipeline measurement system for condensate residue flow metering of an aromatics plant in hydrocarbon industry. A cause of cavitation in the control valve is due to change in the purpose of flow metering system from use for custody transfer measurement to use for normal process monitoring and control. In order to avoid damaging effects of cavitation, pipeline modification by installing a new monitoring and control system is proposed. Based on the recommended practice of International Society of Automation (ISA) for evaluating control valve cavitation, the evaluation results confirm that no incipient cavitation occurs in the selected control valve for new installation in the proposed modification under normal service conditions.
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    Item type:Publication,
    Using fieldbus physical layer diagnostics in maintenance practice
    (2013-02-15)
    Kummool, Sart
    ;
    Julsereewong, Amphawan
    ;
    Julsereewong, Prasit
    ;
    Mekkrajai, Nukool
    An availability of valuable physical layer diagnostic information in maintenance practice is presented in this article. Establishing an effective and efficient maintenance capability for Foundation Fieldbus segments installed at the Tail Gas Treating Unit, IRPC Public Company Limited, Thailand is described as an illustrative case study. Diagnostic-driven maintenance strategy not only reduces fixed and variable maintenance costs but also extends useful asset life by reducing the interval between maintenance events, reducing the cost of failures, and making it easier to plan maintenance and service work. © 2013 ICIC International.