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산업안전보건교육이 산업재해발생에 미치는 영향에 관한 연구
장공화 ( Kong Hwa Jang ),하권철 ( Kwon Chul Ha ) 한국산업보건학회 2016 한국산업보건학회지 Vol.26 No.1
Objectives: The aim of this study is to analyze the status of implementation of occupational safety and health education and evaluate the relation between the implementation of education and occupational accidents. Methods: This study used data on occupational safety and health education from the 2012 Current Status of Occupational Safety and Health survey by the Korea Occupational Safety and Health Agency. The sample is 7,010 persons working in relation to occupational safety and health in industry. An ANOVA test is used to analyze the status of and need for education. Poisson regression is used to evaluate the relation between education and occupational accidents. Results: The rate of implementation of education is 53.3% for periodic education on workers holding office positions, 68.3% for periodic education for workers not holding office positions, 60.3% for periodic education for persons holding managerial and supervisory positions, 65.5% for education provided upon hiring, 50.5% for education provided upon changes in work activities and 37.2% for special education. In the Poisson regression, these data strongly suggest that the probability of occupational accidents occurring with education implemented is much lower than without the implementation of any kind of safety and health education. Conclusions: It is clear that implementation of education has a positive effect on reducing occupational accidents, although its application in domestic industry is insufficient. Thus, it is concluded that education on occupational safety and health should be strengthened for the prevention of occupational accidents.
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Development of the KOSHA Proficiency Testing Scheme on Asbestos Analysis in Korea
권지운,장공화,황은성,김기웅 한국산업안전보건공단 산업안전보건연구원 2017 Safety and health at work Vol.8 No.3
This commentary presents the regulatory backgrounds and development of the national proficiency testing (PT) scheme on asbestos analysis in the Republic of Korea. Since 2009, under the amended Occupational Safety and Health Act, the survey of asbestos in buildings and clearance test of asbestos removal works have been mandated to be carried out by the laboratories designated by the Ministry of Employment and Labor (MOEL) in the Republic of Korea. To assess the performance of asbestos laboratories, a PT scheme on asbestos analysis was launched by the Korea Occupational Safety and Health Agency (KOSHA) on behalf of the MOEL in 2007. Participating laboratories are evaluated once a year for fiber counting and bulk asbestos analysis by phase contrast microscopy and polarized light microscopy, respectively. Currently, the number of laboratory enrollments is > 200, and the percentage of passed laboratories is > 90. The current status and several significant changes in operation, sample preparations, and statistics of assigning the reference values of the KOSHA PT scheme on asbestos analysis are presented. Critical retrospect based on the experiences of operating the KOSHA PT scheme suggests considerations for developing a new national PT scheme for asbestos analysis.
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Exposure Assessment for Toxic Hepatitis Caused by HCFC-123
김기웅,박해동,장공화,노지원 한국산업안전보건공단 산업안전보건연구원 2018 Safety and health at work Vol.9 No.3
This case report attempts to present a case of acute toxic hepatitis in fire extinguisher manufacturing workers exposed to 2,2-dichloro-1,1,1-trifluoro-ethane (HCFC-123) in August 2017 in Korea. Twenty-twoyear- old male workers were exposed to HCFC-123 for 1.5 hours one day and for 2.5 hours the other day, after which one worker died, and the other recovered after treatment. The workers were diagnosed with acute toxicity of hepatitis. However, exposure levels of HCFC-123 were not known with no work environment measurement done. Therefore, this study was conducted to estimate the exposure concentration of HCFC-123 via a job simulation experiment. In the simulation, the HCFC-123 exposure concentration was measured with the same working practice and working time as with the workers aforementioned. As a result, the workers who infused HCFC-123 into storage tanks were estimated to be exposed to HCFC-123 at a concentration of 20.65 10.81 ppm, and a mean concentration of area samples within a working radius were estimated as 70.30 18.10 ppm. Valve assembly workers working on valves of a fire extinguisher filled with HCFC-123 were exposed to HCFC-123 at concentrations of 91.65 4.03 ppm and 115.55 7.28 ppm, respectively, in the simulation, and area samples simulated within the working radius were also found to be high with concentrations of 122.75 91.15 ppm and 126.80 60.25 ppm, respectively. Nitrogen gas packing workers, who did not handle HCFC-123 directly, were exposed to the agent at a concentration of 71.80 8.49 ppm. These results suggest that exposure to HCFC-123 at high concentrations for 1.5e2.5 hours caused acute toxic hepatitis in two workers.
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일개 항공기 정비시설의 화학물질 노출의 정성 및 정량 노출평가
백기욱 ( Baek Kiook ),김민석 ( Kim Minseok ),박해동 ( Jang Konghwa ),장공화 ( Park Haedong ),정은교 ( Chung Eunkyo ) 국군의무사령부 2019 대한군진의학학술지 Vol.50 No.1
Objectives; To evaluate exposure of chemicals, especially organic solvent, of aircraft maintenance facility in Korean army. Methods; We sampled bulk sample of solvent and air sample from maintenece facility workplace; cleaning and painting process. Air sampling was done by area sampling and personal sampling method. Analysis of sampling was done by gas chromatography/ mass spectrometry. Results; Benzene, heptane, toluene, ethylbenzene, xylene were detected among cleaning process. Comparison of TLV limit value, benzene was detected at a level of 22% of time weighted average level. Toluene, ethylbenzene, xylene were detected among painting process. Conclusions; We detected several organic solvents which is not enlisted on material safety data sheet. Carcinogenic or reproductive toxic agents were detected. Although the level was lower than exposure limit, safetly and health issues of workers should be concerned.
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