• Title/Summary/Keyword: Flammable materials

Search Result 133, Processing Time 0.021 seconds

Offsite Risk Assessment on Flammable Hazard Site (가연성물질 저장설비의 사고시 사업장외에 미치는 영향평가)

  • Lee, Dong Hoon;Park, Kyo Shik;Kim, Tae Ok;Shin, Dong Min;Shin, Seo Yun
    • Korean Journal of Hazardous Materials
    • /
    • v.3 no.1
    • /
    • pp.52-58
    • /
    • 2015
  • Since the HF release in 2012 in Korea, it became one of the most significant to evaluate consequence to the vicinity of industry facilities handling hazardous materials. BTX plant is selected to assess off-site risk to check whether the facility satisfies the Chemical Control Law by Korea Government. Accident scenarios were listed using process safety information. The scenarios having effect to the off-site were selected and assessed further according to guideline provided by Korea government. Worst case and alternative scenarios including other interested scenarios were evaluated using ALOHA. Each evaluated scenario was assessed further considering countermeasures. The results showed that the facility handling chloric acid is safe enough and needed no further protections at the moment.

3D Terrain Model Application for Explosion Assessment

  • Kim, Hyung-Seok;Chang, Eun-Mi;Kim, In-Won
    • 한국지역지리학회:학술대회
    • /
    • 2009.08a
    • /
    • pp.108-115
    • /
    • 2009
  • An increase in oil and gas plants caused by development of process industry have brought into the increase in use of flammable and toxic materials in the complex process under high temperature and pressure. There is always possibility of fire and explosion of dangerous chemicals, which exist as raw materials, intermediates, and finished goods whether used or stored in the industrial plants. Since there is the need of efforts on disaster damage reduction or mitigation process, we have been conducting a research to relate explosion model on the background of real 3D terrain model. By predicting the extent of damage caused by recent disasters, we will be able to improve efficiency of recovery and, sure, to take preventive measure and emergency counterplan in response to unprepared disaster. For disaster damage prediction, it is general to conduct quantitative risk assessment, using engineering model for environmentaldescription of the target area. There are different engineering models, according to type of disaster, to be used for industry disaster such as UVCE (Unconfined Vapor Cloud Explosion), BLEVE (Boiling Liquid Evaporation Vapor Explosion), Fireball and so on, among them.we estimate explosion damage through UVCE model which is used in the event of explosion of high frequency and severe damage. When flammable gas in a tank is released to the air, firing it brings about explosion, then we can assess the effect of explosion. As 3D terrain information data is utilized to predict and estimate the extent of damage for each human and material. 3D terrain data with synthetic environment (SEDRIS) gives us more accurate damage prediction for industrial disaster and this research will show appropriate prediction results.

  • PDF

APPLICATION OF 3D TERRAIN MODEL FOR INDUSTRY DISASTER ASSESSMENT

  • Kim, Hyung-Seok;Cho, Hyoung-Ki;Chang, Eun-Mi;Kim, In-Hyun;Kim, In-Won
    • Proceedings of the KSRS Conference
    • /
    • 2008.10a
    • /
    • pp.3-5
    • /
    • 2008
  • An increase in oil and gas plants caused by development of process industry have brought into the increase in use of flammable and toxic materials in the complex process under high temperature and pressure. There is always possibility of fire and explosion of dangerous chemicals, which exist as raw materials, intermediates, and finished goods whether used or stored in the industrial plants. Since there is the need of efforts on disaster damage reduction or mitigation process, we have been conducting a research to relate explosion model on the background of real 3D terrain model. By predicting the extent of damage caused by recent disasters, we will be able to improve efficiency of recovery and, sure, to take preventive measure and emergency counterplan in response to unprepared disaster. For disaster damage prediction, it is general to conduct quantitative risk assessment, using engineering model for environmental description of the target area. There are different engineering models, according to type of disaster, to be used for industry disaster such as UVCE (Unconfined Vapour Cloud Explosion), BLEVE (Boiling Liquid Evaporation Vapour Explosion), Fireball and so on, among them, we estimate explosion damage through UVCE model which is used in the event of explosion of high frequency and severe damage. When flammable gas in a tank is released to the air, firing it brings about explosion, then we can assess the effect of explosion. As 3D terrain information data is utilized to predict and estimate the extent of damage for each human and material. 3D terrain data with synthetic environment (SEDRIS) gives us more accurate damage prediction for industrial disaster and this research will show appropriate prediction results.

  • PDF

Design of Non-Flammable Electrolytes for Highly Safe Lithium-Ion Battery (리튬 이온전지의 안전성을 구현하기 위한 난연성 전해액의 설계)

  • Choi, Nam-Soon;Kim, Sung-Soo;Narukawa, Satoshi;Shin, Soon-Cheol;Cha, Eun-Hee
    • Journal of the Korean Electrochemical Society
    • /
    • v.12 no.3
    • /
    • pp.203-218
    • /
    • 2009
  • The development of lithium-ion battery (LIB) technologies and their application in the field of large-scale power sources, such as electric vehicles (EVs), hybrid EVs, and plug-in EVs require enhanced reliability and superior safety. The main components of LIBs should withstand to the inevitable heating of batteries during high current flow. Carbonate solvents that contribute to the dissociation of lithium salts are volatile and potentially combustible and can lead to the thermal runaway of batteries at any abuse conditions. Recently, an interest in nonflammable materials is greatly growing as a means for improving battery safety. In this review paper, novel approaches are described for designing highly safe electrolytes in detail. Non-flammability of liquid electrolytes and battery safety can be achieved by replacing flammable organic solvents with thermally resistive materials such as flame-retardants, fluorinated organic solvents, and ionic liquids.

Examined of reinforcement for the fire protection of the outside insulation Urbantype Housing with flammable insulation material (가연성 단열재를 사용한 외단열 도시형 생활주택의 방화를 위한 보강재 검토)

  • Lee, Kwang-Hee;Jung, Ui-In;Kim, Bong-Joo
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2015.11a
    • /
    • pp.28-29
    • /
    • 2015
  • Due to the big fire in Uijeongbu, the status of construction, fireproof materials and structural method were examined to prevent fire propagation through outside insulation parts of urban living homes. Through research and experiments, the following results were obtained. It was confirmed that outside heat-insulation wall method was used in a large number of urban living homes which were made of materials and structures spreading fire easily.Through experiments, it was revealed that lightweight plate material, as a fireproof material, can save the cost as well as the period of construction and obtain more than 30 minutes of evacuation time which is twice the maximum evacuation time.

  • PDF

Evaporation Cooling of a Droplet containing a Surfactant (계면활성제를 첨가한 액적의 증발냉각)

  • Riu, Kap-Jong;Bang, Chang-Hoon;Kim, Hyun-Woo
    • Transactions of the Korean Society of Mechanical Engineers B
    • /
    • v.27 no.4
    • /
    • pp.424-431
    • /
    • 2003
  • The evaporation cooling phenomenon of a droplet containing a surfactant on a heated surface has been studied experimentally. The two kinds of heater modules made of brass and Teflon$^{TM}$ were tested to investigate the cooling characteristics of droplet. Solutions of water containing Sodium Lauryl Sulfate(0 ppm, 100 ppm, 1000 ppm) were tested in the experiments. The results showed that the contact angle decrease as the concentration of surfactant increases. The tendency did not very with different heated solid materials. As initial temperature of the heated surface becomes high, time averaged heat flux increases and evaporation time decreases with the denser concentration of surfactant. Therefore, water with denser concentration of surfactant could be effective to cool flammable materials. However, the effect of surfactant becomes low as the material temperature is higher than the boiling temperature of water.

An overview of new oxidation methods for polyacrylonitrile-based carbon fibers

  • Shin, Hye Kyoung;Park, Mira;Kim, Hak-Yong;Park, Soo-Jin
    • Carbon letters
    • /
    • v.16 no.1
    • /
    • pp.11-18
    • /
    • 2015
  • The process of oxidizing polyacrylonitrile (PAN)-based carbon fibers converts them into an infusible and non-flammable state prior to carbonization. This represents one of the most important stages in determining the mechanical properties of the final carbon fibers, but the most commonly used methods, such as thermal treatment ($200^{\circ}C$ to $300^{\circ}C$), tend to waste a great deal of process time, money, and energy. There is therefore a need to develop more advanced oxidation methods for PAN precursor fibers. In this review, we assess the viability of electron beam, gamma-ray, ultra-violet, and plasma treatments with a view to advancing these areas of research and their industrial application.

Experimental Procedure for Design Allowances of Mechanical Joint in Non-flammable Composites (불연성 복합재의 기계적 접합부 설계 허용치 도출을 위한 실험적 절차)

  • Lee Chang-Hun;Kim Jin-Bong;Park Ji-Sang;Hwang Byung-Sun
    • Proceedings of the Korean Society For Composite Materials Conference
    • /
    • 2004.04a
    • /
    • pp.258-261
    • /
    • 2004
  • This paper contains the tension-tension, the tension-tension bearing and the tension-tension steel bolt joint fatigue characteristics of glass fabric/phenol composite laminates. The experimental results show that the bearing and the steel bolt joint fatigue characteristics of the material is so excellent compared with the simple tension fatigue characteristics, that there are no needs of additional strengthening for mechanical joint parts when the parts are properly designed.

  • PDF

Development of Fire and Explosion Index Estimation Program for Risk Assessment in Chemical Processes (화학공정의 위험성 평가를 위한 화재 폭발 지수 산정 프로그램의 개발)

  • 김기수;백종배;고재욱;노삼규
    • Journal of the Korean Society of Safety
    • /
    • v.8 no.2
    • /
    • pp.58-63
    • /
    • 1993
  • Recently, a large amount of flammable or explosive materials have been handled or stored in chemical industries. H the equipments fail or the materials release in consequence of operation errors, fire and explosion could occur to them. Thus, risk assessment using quantification of risks is very important when design of processes and modifications of installed processes are performed. The purpose of this study is to develop the program for fire and explosion index in order to quantify the expected damage of fire and explosion incidents in chemical plants, to identify equipment that would be likely to contribute to the creation or escalation of an incident, to comunicate the potential fire and explosion risk to management and to account of damage cost.

  • PDF

A Study on the Risk of Fire Caused by Sparks during Grinding Operation (그라인딩 작업 중 발생하는 불티의 화재 예방에 관한 연구)

  • Seong-En Kim;Geun-Chul Lee;Kyong-Jin Park
    • Journal of the Korean Society of Industry Convergence
    • /
    • v.26 no.5
    • /
    • pp.751-756
    • /
    • 2023
  • In this study, We investigated a fire case and performed an experiment to prevent fire from sparks that is generated during grinding operation. Before conduct the test, confirmed that the generating mechanism of fire-flakes in working grinder and the fire experiment was conducted using commonly tools, flammable materials in industrial field. in result, It could be measured scattering distance, temperature, ignition possibility by type of combustible materials. Based on the results of this study, We are expected to be used as basic data for fire prevention in grinding Industry.