• Title/Summary/Keyword: Korean Workplaces

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Exposure and Risk Assessment of Nitrogen Dioxide and Ozone for Sub-population Groups using Monte-Carlo Simulations (Monte-Carlo 모의실험을 통한 부분 인구집단별 이산화질소와 오존의 노출 및 위해성 평가)

  • Park, Jinhyeon;Ryu, Hyeonsu;Yang, So Young;Park, Yunkyung;Heo, Jung;Kim, Eunchae;Choe, Youngtae;Cho, Mansu;Yang, Wonho
    • Journal of Environmental Health Sciences
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    • v.45 no.2
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    • pp.113-125
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    • 2019
  • Objectives: Although the risk assessments for nitrogen dioxide ($NO_2$) and ozone ($O_3$) have been extensively studied, most of the existing risk assessments were limited mainly to indoor environments such as workplaces, schools, and multi-use facilities. Therefore, integrated risk assessment is needed to consider exposure in all microenvironments, including outdoors. The purpose of this study was to assess the differences in risk among sub-population groups according to time-activity patterns and reported concentrations, as well as the lifetime risk of Koreans. Methods: In this study, we estimated time-weighted average exposure concentrations of $NO_2$ and $O_3$ for preschool children, students, housewives, workers, and seniors using residential time and indoor concentrations (house, school or workplace, other), outdoors, and transport by meta-analysis method. The risk for $NO_2$ and $O_3$ were assessed by hazard quotient using reference concentrations 30 and 60 ppb, respectively. The risk assessments were conducted through 1,000,000 Monte-Carlo simulations for probabilistic analysis. Results: Preschool children, students, housewives, workers, and seniors spent 91.9, 86.0, 79.8, 82.2, and 77.3% of their day in a house, school, or workplace, respectively. The risk assessment for the lifetime of a housewife and a worker showed that 33.8 and 28.4% of hazard quotients of $NO_2$ exceed 1, respectively, and more than 99% of hazard quotient of $O_3$ were less than 1. Conclusions: The risk of $NO_2$ and $O_3$ by sub-population group and for the lifetime of housewives and workers were assessed. The risk for $NO_2$ was higher than for $O_3$ and showed a different risk by sub-population group. Both $NO_2$ and $O_3$ showed a higher risk for housewives than for workers. This study can be used as a basis for lifetime exposure and risk assessment for $NO_2$ and $O_3$.

Implementing a Model for Developing Participatory Labor Archives for Shipbuilding Labor Digital Archives in Young-do, Busan Metropolitan City (참여형 디지털 아카이브 구축 실행 방안 부산 영도 지역 조선(造船) 노동 아카이브 구축을 위하여)

  • Hyun, Moonsoo;Jeon, Bobae;Lee, Dong-Hyun
    • The Korean Journal of Archival Studies
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    • no.42
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    • pp.245-285
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    • 2014
  • This study aims to implement a model for developing participatory labor archives for shipbuilding labor archives in young-do, Busan, and to find possibilities of building digital labor archives as participatory ones. The methodology of locality documentation has been applied, and locality archives accepting participation of people with experiences from shipbuilding industry have been examined. Omeka was applied because it is an open-source software and provides additional functions which support various user participations and web-publishing. Following the the model, firstly, a preliminary investigation was conducted and research of participatory agents and records was proceeded. Secondly, it collected and described information of the agents and records by institutions with records and provenance. Thirdly, it developed archival contents specific to events, persons and workplaces in association with archival information. For the follow-up study, plugins were installed and tested to apply for further experiment with participation.

Analysis of the Fine Particulate Matter Particle Size Fraction Emitted from Facilities Using Solid Refuse Fuel (고형연료제품 사용시설에서 배출되는 미세먼지 입경분율 분석)

  • You, Han-Jo;Jung, Yeon-Hoon;Kim, Jin-guil;Shin, Hyung-Soon;Lim, Yoon-Jung;Lee, Sang-Soo;Son, Hae-Jun;Lim, Sam-Hwa;Kim, Jong-Su
    • Journal of Environmental Health Sciences
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    • v.46 no.6
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    • pp.719-725
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    • 2020
  • Objectives: With the growth of national interest in fine particulate matter, many complaints about pollutants emitted from air pollution emitting facilities have arisen in recent years. In particular, it is thought that a large volume of particulate pollutants are discharged from workplaces that use Solid Refuse Fuel (SRF). Therefore, particulate contaminants generated from SRF were measured and analyzed in this study in terms of respective particle sizes. Methods: In this study, particulate matter in exhaust gas was measured by applying US EPA method 201a using a cyclone. This method measures Filterable Particulate Matter (FPM), and does not consider the Condensable Particulate Matter (CPM) that forms particles in the atmosphere after being discharged as a gas in the exhaust gas. Results: The mass concentration of Total Suspended Particles (TSP) in the four SRF-using facilities was 1.16 to 11.21 mg/Sm3, indicating a very large concentration deviation of about 10 times. When the fuel input method was the continuous injection type, particulate matter larger than 10 ㎛ diameter showed the highest particle size fraction, followed by particulate matter smaller than 10 ㎛ and larger than 2.5 ㎛, and particulate matter of 2.5 ㎛ or less. Contrary to the continuous injection type, the batch injection type had the smallest particle size fraction of particulate matter larger than 10 ㎛. The overall particulate matter decreased as the operating load factor decreased from 100% to 60% at the batch input type D plant. In addition, as incomplete combustion significantly decreased, the particle size fraction also changed significantly. Both TSP and heavy metals (six items) satisfied the emissions standards. The measured value of the emission factor was 38-99% smaller than the existing emissions factor. Conclusions: In the batch injection facility, the particulate matter decreased as the operating load factor decreased, as did the particle size fraction of the particulate matter. These results will help the selection of effective methods such as reducing the operating load factor instead of adjusting the operating time during emergency reduction measures.

Evaluation of the Odor around an Industrial Complex Area and the Operational Effects of the Odor Monitoring System in Seo-gu, Daegu City (대구시 서구 산업단지 주변 지역의 악취오염도와 악취감시시스템 운영 평가)

  • Lee, Myeong-Sug;Keum, Jong-Lok;Kang, Dong-Hoon;Jo, Hang-Wook;Kwon, Byoung-Youne;Kim, Eun-Deok;Lee, Chan-Hyung;Song, Hee-Bong;Shin, Sang-Hee
    • Journal of Environmental Health Sciences
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    • v.47 no.1
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    • pp.45-54
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    • 2021
  • Objectives: This study evaluated the odor around an industrial complex area (#1-#5) and the operational effects of the Odor Monitoring System in Seo-gu in Daegu City. Methods: Samples were collected from November 2012 to December 2018 and were analyzed for complex odor. The odor occurrence rate and the odor reduction rate were calculated. Results: In 2018, the mean concentration of complex odor decreased 20.9% and the odor occurrence rate decreased from 65.0 to 27.5% around the industrial complex area (#1-#5) in Seo-gu compared to 2013. After the operation of the Odor Monitoring System, the standard excess rate (3.0%→40.8%) and the excess concentration of complex odor (1,442→4,304) increased at odor-emitting workplaces. In addition, the mean concentration of complex odor (15.9%) and the odor occurrence rate (60.6%→32.9%) around the industrial complex area (#1-#5) and the number of odor complaints (23.4%) in Seo-gu decreased. Conclusion: In order to reduce the odor around the industrial complex area, it is important to improve the odor emitting facilities. The Odor Monitoring System uses scientific and systematic monitoring methods that can help control and manage the odor emission facilities.

A Study on Green Space Location Selection to Reduce Particulate Matter by Projecting Distributions of Emission Source and Vulnerable Groups - focusing on Seongdong-gu, Seoul - (미세먼지 배출원과 취약계층 분포 추정을 통한 미세먼지 저감 녹지 입지 선정 연구 - 서울시 성동구를 대상으로 -)

  • Shin, Ye-Eun;Park, Jin-Sil;Kim, Su-Yeon;Lee, Sang-Woo;An, Kyung-Jin
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.24 no.1
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    • pp.53-68
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    • 2021
  • The study aims to propose a locating method of green space for reducing Particulate Matter (PM) in ambient air in conjunction with its source traces and vulnerable groups. In order to carry out the aims and purposes, a literature review was conducted to derive indicators of vulnerable area to PM. Based on the developed indicators, the vulnerable areas and green spaces creation strategies for each cluster were developed for the case of Seongdong-gu, Seoul. As a result, six indicators for vulnerability analysis were came out including the vulnerable groups (children's facilities, old people's facilities), emission sources (air pollutant emission workplaces, roads), and environmental indicators (particulate matter concentration, NDVI). According to the six selected indicators, the target area was divided into 39 hexagons and analyzed to result the most vulnerable areas to particulate matter. As a result of comprehensive vulnerability analysis, the Seongsu-dong area was found to be the most vulnerable to particulate matter, and 5 clusters were derived through k-means cluster analysis. Cluster 1 was analyzed as areas that most vulnerable to particulate matter as a result of the comprehensive analysis, therefore urgent need to create green spaces to reduce particulate matter. Cluster 2 was areas that mostly belonged to the Han River. Cluster 3 corresponds to the largest number of hexagons, and since many vulnerable groups are distributed, it was analyzed as a cluster that required the creation of a green spaces to reduce particulate matter, focusing on facilities for vulnerable groups. Three hexagons are included in cluster 4, and the cluster has many roads and lacks vegetation in common. Cluster 5 has a lot of green spaces and is generally distributed with fewer vulnerable groups and emission sources; however, it has a high level of particulate matter concentration. In a situation where various green spaces creation projects for reducing particulate are being implemented, it is necessary to consider the vulnerable groups and emission sources and to present green space creation strategies for each space characteristic in order to increase the effectiveness of such projects. Therefore, this study is regarded as meaningful in suggesting a method for selecting a green area for reducing PM.

A Study on the Improvement of the System to Reduce Damage on Ammonia Chemical Accident (암모니아 화학사고 피해를 줄이기 위한 제도개선 연구)

  • Lee, Joo Chan;Jeon, Byeong Han;Kim, Hyun Sub
    • Journal of the Society of Disaster Information
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    • v.18 no.2
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    • pp.306-313
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    • 2022
  • Purpose: The purpose of this study is suggested to improve upon current existing methods of ammonia chemical accident prevention and damage reduction. Method: Ammonia is one of the most common toxic substances that causes frequent chemical accidents. And it was selected as leakage materials according to statistics on chemical accident. Based on actual cases of chemical accidents, CARIS modeling was used to compare the damage impact range of Ammonia and HCl and Cl. Also, find out problems with the current systems. Result: As a result of find out the range of accident influence that spreads to the surroundings when an ammonia chemical accident, it was longer than the range of influence of hydrochloric acid and shorter than that of chlorine. In addition, it was found that when chemical accident by ammonia, hydrochloric acid, or chlorine, there are apartments and schools, which can have an effect. Conclusion: It is decided that it is necessary to determine whether or not chemical accident prevention management plans and statistical investigations are submitted for workplaces dealing with ammonia, and detailed guidelines and reviews are necessary. In addition, it is judged that it is necessary to establish a DB for ammonia handling plants, and it is considered that information sharing and joint inspection among related organizations should be pursued.

A Case Study on the Parenting Resources of Fathers in Single-Parent Families: Focusing on Divorced Man (부자가족 아버지의 자녀 양육 자원에 대한 사례연구: 이혼한 남성을 중심으로)

  • Lee, Mansoo;Park, Jeongyun
    • Journal of Family Resource Management and Policy Review
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    • v.26 no.4
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    • pp.1-13
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    • 2022
  • This study was aimed at exploring the parenting experience of fathers in single parent families as well as comprehensively determining their parenting experiences and the various parenting resources and support systems that have emerged in the process. The subjects were five divorced fathers who had not remarried and had been raising their children on their own. This qualitative case study involved data collect through in-depth interviews. The inter-case analyses derived two topics, five categories, and 17 concepts related to the issues of interest. The results indicated, that, first, there was "psychological confusion in the early stages of parenting" because of the sudden onset of this responsibility after divorce. Second, in the parenting experience, the fathers felt that "family survival was at stake". Third the support systems that the fathers had in raising single parent families were "social resources" made available through workplaces, acquaintances, institutions, and the government. Such systems also took the form of "family resources" including brothers and parents. An "internal resource" was the presence of children along with psychological sources of support, such as responsibility and the satisfaction experienced by the fathers through parenting. This study, uncovered the reality, resources, and support systems of fathers in single families. It is meaningful in that it will serve as a basis for supporting practical measures and educational interventions for fathers in single-parent households.

Disaster Reduction Plan through Forklift Accident Case Analysis (지게차 재해사례 분석을 통한 재해감소방안)

  • Young Min Park
    • Journal of the Society of Disaster Information
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    • v.19 no.1
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    • pp.173-183
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    • 2023
  • Purpose: In order to reduce industrial accidents caused by forklift trucks, it is actually necessary to analyze the causes of accidents. This study aims to present disaster prevention measures by analyzing accident cases by forklift accident type. Method: For the analysis of industrial accidents, including serious industrial accidents caused by forklifts from 2021 to 2022, accident statistics from the Korea Occupational Safety and Health Agency were used to analyze accidents in four types. Result: In the last two years, the total number of victims, including deaths and other serious injuries, was 2,559, which was 1,396 in 2021 and 1,163 in 2022. Disaster prevention measures were presented for industrial accidents by size and occurrence type of equipment that cause serious industrial accidents in which more than 1,000 people are injured annually. Conclusion: It is necessary to expand the number of workers subject to the forklift financial support project to less than 100. It is necessary to amend the proviso on boarding restrictions in Article 86, Paragraph 7 of the 「Regulations on Industrial Safety and Health Standards」. It is mandatory to install front and rear cameras. It is necessary to install driving-linked safety belts. It is necessary to install line beams obligatory. It is necessary to expand the subject of forklift special safety and health education to workplaces that have more than one forklift truck, and it is necessary to redesignate the training hours to 16 hours every year.

A Study on the Improvement of Response System through the Case of Heavy Rain Disaster Response (폭우재난 대응 사례를 통한 대응체계 개선방안 연구)

  • Woo Sub Shim;Sang Beam Kim
    • Journal of the Society of Disaster Information
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    • v.19 no.3
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    • pp.597-607
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    • 2023
  • Purpose: The Ministry of Employment and Labor has been working hard to ensure the safety of workers due to heavy rain during natural disasters as the responsible ministry in charge of preventing industrial accidents and health problems for workers. Accordingly, the Ministry of Employment and Labor intends to analyze actual cases of responding to heavy rain disasters and suggest ways to improve the response system. Method: An emergency response system implemented to respond to heavy rain disasters with an internal expert group composed of those in charge of disaster work at headquarters, local government offices, and Korea Occupational Safety and Health Agency, and an external expert group composed of professors, consulting representatives, and disaster managers from other ministries. Contents on self-inspection by industry, workplace inspection, use of serious siren, safety management and restoration work guidance were reviewed. Result: First of all, it is necessary to check the regular contact system from time to time, and it is also necessary to prepare and distribute detailed self-checklists for each industry. In addition, it is necessary to check the implementation of self-inspection when inspecting workplaces, and it seems necessary to have measures to increase the readability of information notified through serious disaster sirens. In addition, since safety work is done in the form of a contract, it seems necessary to prepare specific safety guidelines. Conclusion: In order to protect the lives of workers due to seasonal harm and risk factors, unlike the passive coping methods of the past, abnormal weather should not be regarded as an unexpected situation, and it should be actively and preemptively responding beyond the conventional framework.

A Study on Health Impact Assessment and Emissions Reduction System Using AERMOD (AERMOD를 활용한 건강위해성평가 및 배출저감제도에 관한 연구)

  • Seong-Su Park;Duk-Han Kim;Hong-Kwan Kim;Young-Woo Chon
    • Journal of the Society of Disaster Information
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    • v.20 no.1
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    • pp.93-105
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    • 2024
  • Purpose: This study aims to quantitatively determine the impact on nearby risidents by selecting the amount of chemicals emitted from the workplace among the substances subject to the chemical emission plan and predicting the concentration with the atmospheric diffusion program. Method: The selection of research materials considered half-life, toxicity, and the presence or absence of available monitoring station data. The areas discharged from the materials to be studied were selected as the areas to be studied, and four areas with floating populations were selected to evaluate health risks. Result: AERMOD was executed after conducting terrain and meteorological processing to obtain predicted concentrations. The health hazard assessment results indicated that only dichloromethane exceeded the threshold for children, while tetrachloroethylene and chloroform appeared at levels that cannot be ignored for both children and adults. Conclusion: Currently, in the domestic context, health hazard assessments are conducted based on the regulations outlined in the "Environmental Health Act" where if the hazard index exceeds a certain threshold, it is considered to pose a health risk. The anticipated expansion of the list of substances subject to the chemical discharge plan to 415 types by 2030 suggests the need for efficient management within workplaces. In instances where the hazard index surpasses the threshold in health hazard assessments, it is judged that effective chemical management can be achieved by prioritizing based on considerations of background concentration and predicted concentration through atmospheric dispersion modeling.