http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
농산물 가공사업장 발생 안전사고 사례에 대한 근본 원인 분석
정원건(Wongeon Jung),김경란(Kyungran Kim),김효철(Hyocher Kim),서민태(Mintae Seo) 대한인간공학회 2021 大韓人間工學會誌 Vol.40 No.6
Objective: The purpose of this study was to investigate the cases of safety accident that occurred in Agricultural Product Processing Plants (APPPs), and the root cause and system of safety were analyzed by using logic tree diagraming method. Background: Local rural development organizations have been expanding agricultural processing-related facilities by supporting related education and starts-ups in order to increase non-agricultural income and create jobs. However, since the machinery and equipment of agricultural processing plants use high-pressure, high-temperature, and high-speed rotation, workers are exposed to various risks. Since the number of safety accidents occurring at APPPs is increasing every year, it is necessary to manage and control the characteristics of accidents. Method: The cases of 29 safety accidents that occurred in 10 APPPs were collected. Demographic characteristics and risk factors were investigated for 29 people who experienced accidents. In addition, logic tree diagraming method was conducted in order to analyze root causes and systems of safety. Results: For the rate of 29 accidents by type of accident risk, high-temperature (41.4%) was identified as the highest rate, followed by excessive force/movement (20.7%), bump (13.8%), and jammed (6.9%). As for the type of injury, burns (48.3%) had the highest rate, followed by musculoskeletal disorders (20.7%), incised wound (10.3%), and cut (6.9%). Fracture, amputations, and stabbed were 3.4%, respectively. As results of logic tree diagraming method, 119 root causes were derived, which were classified into six categories in systems of safety. The most common system of safety was mitigation (28.6%), followed by design (23.5%), personal protective equipment (19.3%), training (17.6%), warning (9.2%), and communication (1.7%). Conclusion: It was confirmed that the accident types in APPPs were similar to those in general industries, and it was determined that control and management of burn accidents were necessary. In addition, it is considered that measures such as installing protective devices, attaching warning signs, and wearing appropriate personal protective equipment are necessary to minimize the risk of APPPs. Application: It is hoped that the results of this study will be utilized in the development of safety guidelines, checklist items, and manuals for the prevention of safety accidents for workers in APPPs.
농작업현장에 적용 가능한 안전보건 기술지침 항목 선정에 관한 연구
정원건 ( Wongeon Jung ),김경수 ( Kyungsu Kim ),서민태 ( Mintae Seo ),김효철 ( Hyocher Kim ) 한국산업보건학회 2021 한국산업보건학회지 Vol.31 No.4
Objectives: This study aimed to select items for technical guidelines through the guidelines of the Korean Occupational Safety and Health Agency (KOSHA) for agricultural workplaces. Methods: All 1,308 guidelines provided by KOSHA were reviewed and categorized using a Delphi technique questionnaire on their compatibility and urgency. Results: Among all the KOSHA guidelines, 100 items related to agricultural workplaces were selected. After that, two Delphi questionnaires were conducted and 46 items were finally selected. The average compatibility was calculated as 4.26, and urgency was 2.39. As a result of measuring the content validity of 46 items, six items were identified that were not relevant to agriculture. The final selected items were classified into four categories: Health examination and management, machinery standards, safety and health standard guides, and workplace environment management. Conclusions: The various risk factors at agricultural workplaces should be prevented and managed. It was shown that related technical guidelines or work standard manuals should be prepared. The technical guidelines of KOSHA will be provided as basic categories in the agricultural sector.
일부 밀폐형 무창계사에서 발생하는 PM<sub>10</sub> 및 엔도톡신의 특성 및 연관성 분석
김효철 ( Hyocher Kim ),신소정 ( Sojung Sin ),김경수 ( Kyungsu Kim ),정원건 ( Wongeon Jung ) 한국산업보건학회 2021 한국산업보건학회지 Vol.31 No.4
Objectives: The aim of this study was to evaluate the concentrations and relationships of coarse particles with a diameter of 10 μm (PM<sub>10</sub>) with endotoxins according to the time of measurement in windowless poultry houses. Methods: In this study, measurement was performed on ten windowless poultry houses with a vertically integrated system from July to November. PM<sub>10</sub> was measured using personal environmental monitors and polytetrafluoroethylene (PTFE) filters with a 4 L/min-calibrated pump in selected sampling locations (two near the door and two near an exhaust fan). The endotoxin on PTFE filter was analyzed by the LAL turbidimetric method. Results: The range of geometric mean concentrations of PM<sub>10</sub> and endotoxins for each of the 38 samples were 0.12-3.30 mg/㎥ and 11.9-3553.66 EU/㎥, respectively. PM<sub>10</sub> and endotoxin concentrations varied by farm, increasing with the decrease in ventilation. The range of the coefficient of determination between PM<sub>10</sub> and endotoxin was 0.0009-0.9249. As the atmospheric temperature decreased, it was confirmed that the concentrations of PM<sub>10</sub>and endotoxin increased because the volume of ventilation was decreased. Conclusions: Endotoxins were more affected by time of measurement and ventilation than PM<sub>10</sub>, which means that endotoxins could be an important indicator for intervention programs for improvement of indoor environments.
Determinants of Indoor PM<SUB>2.5</SUB> Concentrations in Ger, a Traditional Residence, in Mongolia
Ju Young Ahn(안주영),Lim Song(송림),Hyerin Shin(신혜린),Wongeon Jung(정원건),Chimedsuren Ochir,Kiyoung Lee(이기영) 서울대학교 보건환경연구소 2018 보건학논집 Vol.55 No.2
Objectives: Use of coal by residents of ger, the traditional Mongolian residence, is a major cause of increasing indoor PM<SUB>2.5</SUB> concentrations. While high-level of indoor PM<SUB>2.5</SUB><SUB></SUB> concentrations of ger have been reported in the previous studies, the contributions of daily activities, such as indoor coal burning, cooking and smoking to the indoor PM<SUB>2.5</SUB> concentrations have not been clearly determined. The aims of this study were to determine the factors of indoor PM2.5 concentration in ger and to quantify the effect of them on both average and real-time indoor PM<SUB>2.5</SUB> concentrations. Methods: PM<SUB>2.5</SUB> concentrations of gers and dwellings were measured in winter over three years. During the measurement, information of residents’ indoor activities were observed. Multiple regression was carried out with daytime average indoor PM2.5 concentration as a dependent variable. In order to determine the effect of indoor activities on real-time indoor PM<SUB>2.5</SUB> concentration, the peak analysis was performed. Results: Indoor PM<SUB>2.5</SUB> concentration and I/O ratio were significantly higher in gers than dwellings. Outdoor PM<SUB>2.5</SUB> concentration and indoor smoking were significant factors affecting daytime average of indoor PM<SUB>2.5</SUB> concentration in gers. Daily activity factors were associated with real-time PM<SUB>2.5</SUB> concentration - average peak magnitude of 224.3 μg/m3 occurred with fuel addition, 260.1 μg/㎥ with cooking, and 407.7 μg/㎥ with indoor smoking. Conclusion: Indoor PM<SUB>2.5</SUB> concentration of ger was extremely high, even more than dwellings in adjacent area. The indoor smoking and outdoor air pollution affected average indoor PM<SUB>2.5</SUB> concentration in ger. Daily activities of residents of ger such as fuel usage, cooking and smoking increased indoor PM<SUB>2.5</SUB> concentration in a short time.
이원진 ( Won Jin Lee ),윤충식 ( Chungsik Yoon ),이혜진 ( Hye Jin Lee ),정지연 ( Jee Yeon Jeong ),이경희 ( Kyong-hui Lee ),정원건 ( Wongeon Jung ),박미진 ( Mijin Park ) 한국산업보건학회 2021 한국산업보건학회지 Vol.31 No.4
Objective: This paper aimed to provide estimates the burden of cancer attributable to occupational exposures in South Korea and to review the processes of estimating the population attributable fraction(PAF). Methods: The PAFs of occupational cancer were reviewed from previous studies. The number and proportion of cancer cases attributable to occupational carcinogens were estimated by multiplying the PAFs by recent Korean cancer data(up to 2016 for incidence and 2017 for death) obtained from the Statistics Korea. The estimation of PAFs included occupational exposures defined as definite or probable human carcinogens by the International Agency for Research on Cancer. Results: In South Korea, an estimated 10,769 new cancer cases(9,017 among men, 1,752 among women) in 2016, and 7,030 cases of death from cancer(6,047 in men, 983 in women) in 2017, were attributable to occupational exposures, representing 1.5-4.7% of all new cancer cases(2.1-7.5% and 0.3-1.6% among men and women, respectively) and 2.7-8.9% of all cancer death cases(3.4-12.4% and 0.5-3.3% among men and women, respectively). Among men and women, lung cancer was the most impactful. The estimation process of PAFs, however, has a variety of uncertainties. Conclusions: Occupational exposures contribute to a substantial burden of cancer in South Korea. PAFs for cancer provide useful information for prevention initiatives and prioritizing health policies for workers. However, PAFs need to be interpreted cautiously and updated regularly.