• Title/Summary/Keyword: Hazardous materials

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Brief study on Restriction of Hazardous Substances Directive (RoHS) (유해물질(有害物質) 제한지침(制限指針)(Restriction of Hazardous Substances Directive, RoHS)의 현황(現況))

  • Kumar, J. Rajesh;Lee, Jin-Young;Kim, Joon-Soo;Shhn, Jeong-Soo
    • Resources Recycling
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    • v.17 no.6
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    • pp.3-9
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    • 2008
  • The Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment commonly referred to as the Restriction of Hazardous Substances Directive or RoHS was adopted in February 2003 by the European Union. The RoHS directive took effect on 1 July 2006, and is required to be enforced and become law in each member state. This directive restricts the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. It is closely linked with the waste electrical and electronic equipment directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods and is part of a legislative initiative to solve the problem of huge amounts of toxic e-waste.

A Method to Measure Damage Areas on Railway Accidents by the HAZMATs types using GIS Spatial Analysis (GIS 공간 분석기법을 활용한 위험물질별 철도사고 피해규모 자동추출방안에 관한 연구)

  • Park, Min-Kyu;Kim, Si-Gon;Lee, Won-Tae
    • Journal of the Korea Safety Management & Science
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    • v.12 no.1
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    • pp.35-42
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    • 2010
  • Due to the industrialization and urbanization, the transport of hazardous materials increases, which rises possibilities in occurring prospective accidents in terms of hazardous material transport as well. This study applied the model developed from the previous research to analyze the scale of damage areas from the accidents related to hazardous material accidents, as well as suggested a method to measure automatically the scale of accident including casualties and environmental damage based on the guideline which suggests the quantities of hazardous materials exposed from an accident and was defined in the study of standardization for hazardous material classification. A buffering analysis technique of Geographic Information System (GIS) was applied for that. To apply the model which evaluates the scale of population and exposure to environment on each link, rail network, zones, rail accident data, rail freight trips, and locations of rivers etc were complied as a database for GIS analysis. In conclusion, a method to measure damage areas by the types of hazardous materials was introduced using a Clip and a Special Join technique for overlay analysis.

Nanosecond Gated Raman Spectroscopy for Standoff Detection of Hazardous Materials

  • Chung, Jin Hyuk;Cho, Soo Gyeong
    • Bulletin of the Korean Chemical Society
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    • v.35 no.12
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    • pp.3547-3552
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    • 2014
  • Laser Raman spectroscopy is one of the most powerful technologies for standoff detection of hazardous materials including explosives. Supported by recent development of laser and sensitive ICCD camera, the technology can identify trace amount of unknown substances in a distance. Using this concept, we built a standoff detection system, in which nanosecond pulse laser and nanosecond gating ICCD technique were delicately devised to avoid the large background noise which suppressed weak Raman signals from the target sample. In standoff detection of explosives which have large kill radius, one of the most important technical issues is the detection distance from the target. Hence, we focused to increase the detection distance up to 54 m by careful optimization of optics and laser settings. The Raman spectra of hazardous materials observed at the distance of 54 m were fully identifiable. We succeeded to detect and identify eleven hazardous materials of liquid or solid particles, which were either explosives or chemical substances used frequently in chemical plants. We also performed experiments to establish the limit of detection (LOD) of HMX at 10 m, which was estimated to be 6 mg.

A Study on the Fire Risk Assesment of Solvent-based Paints (유성페인트의 화재 위험성평가에 관한 연구)

  • Lee, Bong-Woo;Kwon, Seong-Pil
    • Fire Science and Engineering
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    • v.31 no.6
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    • pp.1-7
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    • 2017
  • Currently, flammable liquids account for more than 87 wt% of the hazardous materials in circulation in Korea, and paint products are the most commonly used mixed hazardous materials. Therefore, one of the most urgent and important issues is that we have to secure the safety for manufacturing, storage and transport of paint products. In this study we investigated and analyzed the domestic hazardous materials safety management method, the international GHS test method and so forth. We tested risks for a variety of oil paints and found a relation between the results. Furthermore, the risk test method and criteria adapted for domestic situation was presented. Paints were classified as hazardous or non-hazardous according to the results of the flash point test, the amount of flammable liquid or the UN-combustion persistence test. It was revealed from the test results of 6 kind of oil-based paints using different resins that they were hazardous materials with very high risks and belonged to the Category 1 or the Category 2.

The Affecting for Awareness of Exposure at Hazardous Materials on the Working Satisfaction of Female Workers in the Small Scale Industry (중소규모 산업장 여성근로자들의 작업환경에 대한 인식이 직무만족에 미치는 영향)

  • Han, Seung-Hyun;Lee, Myung-Kun;Ahn, Kyung-Hyuk;Lee, Jung-Hwa
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.6 no.2
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    • pp.281-291
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    • 1996
  • 458 female workers working in the small and medium scaled industries in Inchon area were surveyed to study their general characteristics, health behavior, working and environmental conditions, awareness of exposure at hazardous materials, current health status, and degree of working satisfaction. Self-administered questionnaire was distributed to the female workers with the explanation by trained interviewer on the purpose of survey and the method how to answer. The results were as follows : (1) 75.5% of the respondents are living with their families and others are living in domitary or rent house for herself. Age distribution ranges from teenagers to warren in their forties. In marital status 69.0% of workers are single and 31.0% of them have ever married. 69.4% of workers are high school graduate. The size of factory is 48.3% with less than 300 workers, 42.1% with 300~500 workers. (2) Most of the workers(86.7%) are full time workers, 52% of the respondents have working experiences in other factories. More than 65% have fewer than 5 years working experience. (3) The awareness of exposure at noise was 33% of respondents, it was significantly different by skilled status. The awareness of exposure at dust, other hazardous material was each 13.3%, 12.4% of respondents. (4) 26% of them are unsatisfied with their working cognitions and 43.7% of them are unsatisfied with their welfare in occupational system unsatisfactory rate of promotion is higher in the unmarried workers(45.6%), skilled workers(47.2%), full time workers(47.4%), long term workers(50%), and awareness group of exposure hazardous material(51.3%), compared to married women workers, unskilled workers, part-time workers, short term workers and unawareness group of exposure at hazardous materials. (5) The index of working satisfaction is rated on a scale of 1 to 10 with the higher point indicating higher satisfaction. Among the selected variables, marital status, working status, the awareness of exposure at hazardous materials, were statistically significant with the index of working satisfaction. (6) By multiple regression analysis showed that the determinant factors of index of working condition were health index, the awareness of exposure at dust, the awareness of exposure other hazardous materials, marital status and working period. In conclusion, there is a significant relationship between the awareness of exposure at hazardous material the index of working satisfaction. Therefore if the workers are less exposed to the hazardous material and are educated properly they will be more satisfied with their work thus improving their health and productivity. Finally, with the result of this study, there is a great need for the development of a health promotion program and a welfare policy for small-scale factories.

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A Study for the Safety Regulation of Tank Car for the Hazardous Material - General Oil Tank Car (위험물 수송 탱크 차량의 국내외 안전기준 비교 연구-유류 차량 중심)

  • Kim, Jae-Hoon;Goo, Byung-Chun
    • Fire Science and Engineering
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    • v.22 no.4
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    • pp.70-75
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    • 2008
  • Recently, there are so many studies related safety of railway vehicle. But these studies are focused on the passenger car, metro system and high speed train. However, the leakage of hazardous materials may contaminate the environment and cause terrible damage to the ecology, even the human and properties. And so, Safety and security have been already established in many countries, currently they are investing lots of money on the development of technology to prevent accidents. Therefore it is necessary to make a systematic plan and develop safety specifications. In this study, we compared between domestic and international general oil tank car safety regulations for the hazardous materials, and prepare the basic for the making of systematic safety plans and safety regulations for the transport of hazardous materials by tank car.

A Study on the Suitability Analysis of Tunnel Access Control for Hazardous Materials Transport Vehicles on the Expressway (위험물질 수송차량의 고속도로 터널통행규제 분석 연구)

  • Hong, Jung Yeol;Choi, Yoon Hyuk;Park, Dong Joo
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.17 no.3
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    • pp.18-31
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    • 2018
  • Since accidents of hazardous material transport vehicle on roadways cause severe damage in the form of disaster, foreign countries have long been engaged in systematic management and establishment of relevant laws and policies for the road safety. Recently, over 10-kilometer long tunnel, such as Inje-Yangyang Tunnel and Geumjeongsan Tunnel, has been opened on the expressway and the production of various hazardous materials is increasing with the development of chemical technology. However, road laws related to the safe operation of hazardous materials transport vehicles are still lacking, and policy measures for managing them have not been specified. It is an important task to recognize the risk of accidents of hazardous material transport vehicles and to secure road safety by establishing a management plan for road managers. Therefore, this study analyzed the feasibility of the traffic regulation of expressway tunnel in South Korea and suggested a direction for management. The results of this study can be utilized as the primary data for the revision of law related to hazardous materials transport vehicles on roadways and the derivation of optimal route of hazardous materials transport vehicles.

The effect of ventilation on reducing the concentration of hazardous substances in the indoor air of a Korean living environment

  • Kim, Hyunjoo;Kim, Jin Seog;Lee, Jongman;Kim, Dalho
    • Analytical Science and Technology
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    • v.33 no.1
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    • pp.49-57
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    • 2020
  • Controlling the quality of indoor air is important in order to maintain a healthy life. In this study, we investigated the correlation between the hazardous substance concentration of indoor air and circulation based on different ventilation methods in the apartment, which is one of the representative housing types in Korea. As target substances, we considered the hazardous substances which are generated during the cooking process and radon gas which is originated from building materials. We measured the concentrations of carbon dioxide and fine particles in relation to type of food and ventilation methods in order to determine the change in the concentration levels of hazardous substances which are generated during the cooking process. On the other hand, we measured the concentration of radon gas before and after letting fresh air into a room through windows in order to determine the change in the concentration level of radon gas which is originated from building materials. The results show that turning on the ventilation fan plays a major role in reducing the concentration levels of hazardous substances in the kitchen, and that it is more effective to turn on the ventilation fan during cooking than after cooking to prevent the diffusion of hazardous materials produced by cooking through the indoor air. Also, the results indicate that letting fresh air into a room through windows more than one time a day is necessary to reduce the concentration level of radon gas in the room to safe concentration range.

A Method to Measure Damage Areas by the types of Railroad Hazardous Material through GIS Spatial Analysis (GIS 공간 분석기법을 통한 철도사고위험물질별 피해규모 자동추출방안)

  • Kim, Sang-Gyun;Kim, Si-Gon;Lee, Won-Tea
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.1769-1778
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    • 2009
  • Due to the industrialization and urbanization, the transport of hazardous materials increases, which rises possibilities in occurring prospective accidents in terms of hazardous material transport as well. This study applied the model developed from the previous research to analyze the scale of damage areas from the accidents related to hazardous material accidents, as well as suggested a method to measure automatically the scale of accident including casualties and environmental damage based on the guideline which suggests the quantities of hazardous materials exposed from an accident and was defined in the study of standardization for hazardous material classification. A buffering analysis technique of Geographic Information System (GIS) was applied for that. To apply the model which evaluates the scale of population and exposure to environment on each link, rail network, zones, rail accident data, rail freight trips, and locations of rivers etc were complied as a database for GIS analysis. In conclusion, a method to measure damage areas by the types of hazardous materials was introduced using a Clip and a Special Join technique for overlay analysis.

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Relative Positioning of Vehicles Carrying Hazardous Materials Using Real-Time Kinematic GPS

  • Kim, Hee Sung;Choi, Kwang Ho;Lee, Je Young;Lim, Joon Hoo;Chun, Se Bum;Lee, Hyung Keun
    • Journal of Positioning, Navigation, and Timing
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    • v.2 no.1
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    • pp.19-31
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    • 2013
  • It is well known that the accident of vehicles carrying hazardous materials incurs huge losses economically and socially. To detect and respond rapidly against the accident of a vehicle carrying hazardous materials, it is essential to estimate the relative navigation information between the forward tractor module and the backward trailer module of the vehicle reliably and accurately. In this paper, a precise relative positioning system based on GPS is designed, implemented, and evaluated as a prerequisite to design an effective relative navigation system for the vehicle carrying hazardous materials. An experiment using field-collected 10 Hz real GPS measurements showed that the designed relative positioning system achieves 22 cm accuracy within 15 epochs by float solutions. Also, it was found that cm-level integer solutions can be generated reliably after the quick convergence of float solutions.