• Title/Summary/Keyword: Thermal Safety

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A Study on the Actual Conditions of Safety Management in Thermal Oil System (열매체유 시스템의 안전관리 실태에 관한 연구)

  • Lee, Joo Yeob;Lee, Keun Won;Woo, In Sung
    • Journal of the Korean Society of Safety
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    • v.29 no.5
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    • pp.60-66
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    • 2014

  • Depending on the progress of the industrial advances, the use of the thermal oil system in the utility system has been increased, which became an important part in the operation of the plant. However, fire or explosion have occurred due to lack of risk awareness and safety management, more frequently than we know. In this study, by using a questionnaire, actual conditions of safety management in thermal oil system is surveyed and analyzed, it is composed of general, a safety status of the thermal oil system component and the stage of recognition and management in the thermal oil system. These results of this study can be used as basic data to the safety management and the accident prevention of fire or explosion in the workplace.

  • https://doi.org/10.14346/JKOSOS.2014.29.5.060 인용 PDF KSCI

An Evaluation of Thermal Stability of Raw Materials in the Vinyl Acetate Polymerization Process (비닐아세테이트 중합공정에서 원료물질의 열적 안정성 평가)

  • Lee, Keun-Won;Han, In-Soo;Lee, Jung-Suk
    • Journal of the Korean Society of Safety
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    • v.25 no.3
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    • pp.61-65
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    • 2010

  • Most of the chemical reactions performed in the chemical industry are exothermic, meaning that thermal energy is released during the reaction. It is also important to understand the thermal hazards such as thermal stabilities and runaway reactions, which are governed by thermodynamics and reaction kinetics of the mixed materials. The paper was described the evaluation of thermal behavior caused by an exothermic batch process in manufacture of the vinyl acetate resin. The aim of the study was to evaluate the thermal stabilities of raw materials with operating conditions such as a reaction inhibitor, heating rate, reaction atmosphere and the mount of methanol charged in the vinyl acetate polymerization process. The experiments were performed in the differential scanning calorimeter(DSC), C 80 calorimeter, and thermal screening unit($TS^u$). It was suggested that we should provide the thermal characteristics for raw materials to present safe precautions with operating conditions in the vinyl acetate polymerization process.

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An Evaluation of Thermal Stability on Esterification Process in Manufacture of Concrete Mixture Agents (시멘트 혼화제 제조시 에스테르화공정의 열 안정성 평가)

  • Lee, Keun-Won;Lee, Jung-Suk;Choi, Yi-Rae;Han, In-Soo
    • Journal of the Korean Society of Safety
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    • v.24 no.4
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    • pp.40-46
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    • 2009

  • The early identification of thermal hazards associated with a process such as the heats of reaction, exothermic decompositions, and the understanding of thermodynamics before any large scale operations are undertaken. The evaluation of reaction factors and thermal behavior on esterification process in manufacture of concrete mixture agents are described in the present paper. The experiments were performed in the differential scanning calorimetry(DSC), C 80 calorimeter, and thermal screening unit($TS^u$). The aim of the study was to evaluate the thermal stability of single material and mixture in esterification process. We provided the thermal data of chemical materials to present safe operating conditions through this study.

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Assessment of Thermal Hazard on Esterification Process in Manufacture of Concrete Mixture Agents by Multimax Reactor System (Multimax Reactor System을 이용한 시멘트 혼화제 제조시 에스테르화공정의 열적 위험성 평가)

  • Han, In-Soo;Lee, Keun-Won;Pyo, Don-Young
    • Journal of the Korean Society of Safety
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    • v.24 no.5
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    • pp.13-20
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    • 2009

  • The risk assessment of thermal hazard to identify chemical or process hazard during early process developments have been considered. The early identification of thermal hazards associated with a process, such as rapid heats of reaction, exothermic decompositions, and the potential for thermal runaways before any large scale operations are undertaken. This paper presents to evaluate the safe operating parameters/envelope for exist plant operations. The assessment of thermal hazard with operating conditions such as amount of process materials, inhibitor, and catalyst on esterification process in manufacture of concrete mixture agents are described. The experiments were performed by a sort of calorimetry with the Multimax reactor system as a screening tool. The aim of the study was to evaluate the thermal risk of process material and mixture in terms of safety security to be practical applications in esterification process. It suggested that we should provide the thermal hazard of reaction materials to present safe operating conditions with cause of accident through this study.

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