중소규모 제조업의 건강·안전·실천에 대한 화학물질 인식도 비교

어원석,이상민,박근섭,Eoh, Won Souk,Lee, Sangmin,Park, Keun Seop 한국안전학회 2019 한국안전학회지 Vol.34 No.4

There was a difference in recognition of chemical substances according to cognitive level of GHS, knowledge level of organic solvents and each department of workers. they were showed higher recognition of chemical substances by research group, partially group and good group. To identify the relationship between types of job classification(group of department, group of GHS cognitive level and group of organic solvents knowledge level) and the levels of recognition of chemical substances, a total of 153 workers in a small and medium business workplace. Descriptive statistics(SAS ver 9.2)was performed. the results of recognition of chemical substances were analyzed the mean and standard deviation by t-test, and anova, (P=0.05). These results In general, small- and medium-sized workplaces have low levels of GHS awareness and organic solvents knowledge. The perception of chemical substances according to the departments. In general, the demand for chemical substances education was highly suggested regardless of the job type. There was a significant difference in the perception of health, safety and practice according to the level of GHS cognitive, and a high perception in the incomplete group. There was not much difference in average awareness of health, safety and practice according to organic solvents knowledge level, but there was a high perception in good group. It is very important to regularly check the worker's perception of the workplace and identify problems with the work environment and improve the work environment. In addition, each department presents appropriate safety and health education such as chemical process safety, toxicity of chemical substances and human exposure. We also propose a chemical substances assessment and management plan that integrates safety and health.

안면부 여과식 방진마스크와 안경 동시 착용 시 불편감과 밀착계수 비교

어원석,최영보,신창섭,Eoh, Won Souk,Choi, Youngbo,Shin, Chang Sub 한국안전학회 2018 한국안전학회지 Vol.33 No.2

This study compares the differences of the fit factor by the order of wearing preference between Particulate filtering facepiece respirators(PFFR) and glasses when participants wore simultaneously and a survey of physical and visual complaint. Recognition level about fit of respirators was investigated and the educational (before- and after-) effect of the fit factor. When participants wore PFFR and glasses, physical complaints were nose pressure, slipping, nose and ear pressure, ear pressure and rim loosen, the most highly physical complaints were nose pressure. Visual complaints were demister, blurry vision, dizziness, visual field, and lens dirty, the most highly visual complaints were demister. But, there was significant difference in physical complaint such as nose pressure(10.3%), slipping (23.0%), nose and ear pressure(14.3%), and rim loosen(16.2%), visual complaint such as visual field(13.8%) and lens dirty(32.4%). For the recognition of fit of respirators, respirators fitness, leak site, an initial point and an object, faulty factor, recognition level was higher. Fit factor was increased after education of proper wearing of respirator. Change of the fit factor was smaller compared to the normal breathing and after 6 actions in case of after education. Questionnaire consisted of general characteristics and physical/visual complaint, recognition of fit. Complaints were measured after the QNFT with multiple choices. Quantitative fit factor was measured by device and compared the result of (before- and after-) educational effect. Also, we selected to 6 actions (Normal breathing, Deep breathing, Bending over, Turning head side to side, Moving head up and down, Normal breathing) among 8 actions OSHA QNFT (Quantitative Fit testing) protocol to measure the fit factors. The fit factor was higher after the training (p=0.000). Descriptive statistics, paired t-test, and Wilcoxon analysis were performed to describe the result of questionnaire and fit test. (P=0.05) Therefore, it is necessary to investigate the quantitative research such as training program and glasses fitting factor about the wearing of PFFR and glasses simultaneously.

일개 화장품 제조업체 근로자의 소음 인식도와 청력역치 조사에 관한 연구

어원석 ( Won Souk Eoh ),함완식 ( Wan Shik Ham ),김현욱 ( Hyun Wook Kim ) 한국산업위생학회 2011 한국산업보건학회지 Vol.21 No.3

To identify the relationship between types of job classification (typical and atypical) and the levels of recognition of noise and the hearing threshold shift, a total of 457 workers in a cosmetic company were studied utilizing a questionnaire and the audiometric hearing test. The results were analyzed by factor analysis, t-test, and general linear model, as appropriate. The results showed that atypical workers had higher level of noise recognition but had lower levels of hearing ability, noise exposure, and the knowledge on hearing loss prevention, compared with those of typical workers. The high noise level group of typical workers showed higher threshold shift levels than that of atypical workers. Significant differences were found at 4 kHz for both ears and in right ear only for hearing threshold shift after adjusting age.

안면부 여과식 방진 마스크의 형태 및 착용 방법 교육이 밀착계수에 미치는 영향 비교

어원석 ( Won Souk Eoh ),최영보 ( Youngbo Choi ),신창섭 ( Changsub Shin ) 한국안전학회(구 한국산업안전학회) 2016 한국안전학회지 Vol.31 No.5

Particulate filtering facepiece respirators (PFFR) is one of the most widely used items of personal protective equipments, and a tight fit of the respirators on the wearers is critical for the protection effectiveness. In order to effectively protect the workers through the respirators, it is important to find and evaluate the ways that can be readily applicable at the workplace to improve the fit of the respirators. This study was designed to evaluate effects of mask style (cup or foldable type) and donning training on fit factors (FF) of the respirators, since these are available at various workplace, especially at small business workplace. A total of 40 study subjects, comprised of 30~50s aged male and female workers in metalworking industries, were enrolled in this study. The FF were quantitatively measured before and after training related to the proper donning and use of cup or foldable-type respirators. The pass/fail criterion of FF was set at 100. After the donning training for the cup-type mask, subjects who passed the fit test were increased from 10 to 33. Moreover, the geometric mean (GM) of FF was increased by 340% in subjects who failed the test. In addition, the training effects for the cup-type mask were significant in female and 50s aged subjects. On the other hand, although the GM of FF for the foldable-type mask was also increased after the donning training, the GM of FF for the foldable-type mask and it’s increase rate were smaller as compared to the cup-type mask. Furthermore, the differences of the increase rates of the GM of FF in sex and aged of the subjects were not significantly for the foldable-type mask. The multi-distribution of leak points for the foldable-type mask may be one of causes for the less effect of training on the fit of the foldable-type mask. These results imply that the raining on the donning and use of PFFR can enhance the protection effectiveness of cup or foldable-type mask, and that the training effects for the foldable-type mask is less significant than that for the cup-type mask. Therefore, It is recommended that the donning training and fit tests should be conducted before the use of the PFFR, and that efficient tranining programs for the foldable-type mask are required.

안전보건교육과정별 참여도 및 교수방법 변경 후 만족도 비교

어원석 ( Won Souk Eoh ),이상민 ( Sang Min Lee ),조인옥 ( In Ok Cho ) 한국산업보건학회 (구 한국산업위생학회) 2021 한국산업보건학회지 Vol.31 No.1

Objectives: This study was performed to investigate the level of participation in and satisfaction with training courses at job training institutions and to improve participation and satisfaction through changes in the training method for industrial ventilation subjects. Methods: The results were analyzed for the mean and standard deviation by t-test and ANOVA, (p=0.05). Participation rates were examined for three courses: specialization, job training, and supervisory. The participation inthe education was 428 people, and the result of satisfaction with the change of education method was 878 people. Satisfaction was investigated for the specialized curriculum and job training curriculum,but not the supervisor curriculum. The satisfaction results for six items(contents, quality, skill, level, degree of understanding, degree of practical) were analyzed according to the change in the training medium and the method among people in one occupational ventilation subject. Results: The participation rate was similar in the job training and specialized training courses, but the lowest rate was in supervisory courses(p=0.05). In general, there was the lowest participation on the first day of education, and the participation rate improved after the second day. Satisfaction with the course was high for the specialized education course with a number of practical education assignments(p=0.278). The satisfaction level for the teaching method in the industrial ventilation subjects was high in a mixed group which combined lecture and practice. The industrial ventilation course in the basic job training course showed a difference between lecture and mixed education(p=0.111), but there was no significant difference. However, the industrial ventilation course in the advance job training course showed a clear difference between lecture and the mixed education(p=0.036). Conclusions: Therefore, the first day of training should start in the afternoon so that more trainees can participate, and it is recommended to assign important subjects after two days. In addition, it is suggested that job competency-enhancing education utilize various educational methods and media.

화장품 제조업 근로자의 화학물질 인식도 비교

이상민,박근섭,어원석,Lee, Sangmin,Park, Keun Seop,Eoh, Won Souk 한국안전학회 2020 한국안전학회지 Vol.35 No.2

To identify the relationship between types of employment(regular and non-regular group) and departments classification (administration, product and research group) and the levels of recognition of chemical substances, a total of 117 workers in cosmetics workplaces. Mainly, regular group and research group showed higher recognition of chemical substances (PPE, ventilation, chemical management, hazards in handling chemicals, skin contact) than non-regular group and administration, product group, but In some cases, production and administrative groups were high. Descriptive statistics(SAS ver9.2)was performed. the results of recognition of chemical substances were analyzed the mean and standard deviation by t-test, and anova, (P=0.05). These results cosmetics manufacturing workplaces have normal level of the perception of chemical substances. In most of the employment types, the regular workers showed high recognition, and the working departments showed high recognition in the research and production groups. Therefore, OEM and ODM cosmetics manufacturers regularly identify characteristics and needs of workplaces and workers, and suggest the development of experience and practiced education programs and risk assessment tools that can raise worker awareness.

군부대에서의 라돈 측정 실태 조사: 북미의 측정 방법 및 기준과의 비교 연구

박주영(Juyoung Park),이준원,어원석(Won Souk Eoh),신동현(Dong Hyun Shin),김병직(Byungjick Kim) 한국해군과학기술학회 2023 Journal of the KNST Vol.6 No.3

Radon measurement in military installations is essential for the health and safety of soldiers and has broader implications for public health and safety. Accurate measurement is paramount as it forms the foundation for effective radon exposure assessment and mitigation efforts. Providing clear regulations and guidelines for radon reduction is crucial, but precision in measurement is the key to informing successful strategies and policies for reducing radon exposure both within the military and in the general population.

해군 근무환경에서 노출될 수 있는 염화알루미늄의 피부독성 예방을 위한 보호크림 개발 및 효능평가

박창용(Chang-Yong Park),어원석(Won Souk Eoh),이준원(Joon-Won Lee),오영현(Young-Hyun Oh),정미경(Mi Kyoung Jung),김병직(Byungjick Kim2) 한국해군과학기술학회 2023 Journal of the KNST Vol.6 No.3

This study aimed to investigate the protective effects of a skin protection cream against aluminum chloride, a substance that can cause skin irritation and burns when exposed to the skin. After confirming the safety of the protective cream through skin sensitivity tests, we examined whether the cream could reduce the skin toxicity caused by aluminum chloride using a full-thickness cultured skin. The test results showed a significantly higher level of procollagen synthesis in the group where the skin protection cream was applied compared to the group exposed to aluminum chloride. Additionally, aluminum chloride was found to persist even after washing, but the protection cream inhibited its persistence. These results demonstrate that the skin protection cream can contribute to the prevention of occupational skin diseases among naval personnel and maintenance crew involved in tasks such as ship maintenance.

중소규모 사업장에서 위험성평가 시행과 안전성과의 관계에 관한 연구

조대진(Dae Jin Jo),이준원(Joon Won Lee),어원석(Won Souk Eoh),최상찬(Sang Chan Choi),김득환(Deuk Hwan Kim) 안전문화포럼 2023 안전문화연구 Vol.- No.25

본 연구의 목적은 중소규모 사업장의 위험성평가 시행과 안전성과와의 관계를 분석하는 것이다. 2024년 1월부터 5인 이상 사업장의 중대재해처벌법 시행을 앞두고 있으나, 중소규모 사업장의 재해율은 여전히 높은 실정이다. 중소규모 사업장의 안전행동 및 재해예방을 위해서는 자율기반 안전보건관리체계의 핵심이 되는 위험성평가의 역할이 어떠한지 분석해 볼 필요가 있다. 연구방법의 연구모형은 독립변수인 위험성평가 시행여부와 종속변수인 안전 분위기, 안전규정 준수, 안전사고 발생률, 안전 최우선 가치, 위험행동 관리와의 관계를 알아보기 위한 연구이다. 연구대상은 300인 미만 중소규모 사업장의 종사자 211명이었다. 수집된 자료는 IBM SPSS 29 프로그램을 사용하여 빈도분석, 독립표본 t-검정을 사용하여 분석하였다. 연구결과를 보면 중소규모 사업장의 위험성평가 실시 사업장과 미실시 사업장의 독립표본 t-검정 결과 안전 분위기, 안전규정 준수, 안전사고 발생률, 안전 최우선 가치, 위험행동 관리의 수준에 유의미한 차이를 보였다. 본 연구를 통해 위험성평가를 실시한 중소규모 사업장은 미실시한 사업장보다 안전성과 수준이 높은 것을 확인하였다. 이로써 위험성평가는 중소규모 사업장의 안전행동 실행 및 재해예방에 유효한 제도임을 확인하였다. 중소규모 사업장에서 위험성평가 도입을 위하여 사업주의 인식을 제고하고 내부구성원의 위험성평가 수행역량을 확보할 필요가 있음을 확인하였다. 중소규모 사업장의 위험성평가 실태와 안전성과에 대한 후속연구를 통해 위험성평가가 중소규모 사업장에 활성화되어 근로자의 건강과 생명을 보호하는 산재 예방의 효과적인 제도가 되기를 기대한다. The purpose of this study was to conduct a study on the relationship between risk assessment signal and safety in small and medium-sized workplaces. While the Serious Accidents Punishment Act, which will be applied to places of business with five or more employees, will be effected in January 2024, the accident rate in small- and medium-sized businesses is still high. Promoting safety behaviors and preventing accidents in small- and medium-sized businesses require analyzing the role of risk assessment, an integral part of the self-regulatory safety and health management system. In this regard, this study is aimed at examining the relationship between risk assessment and safety performance in small- and medium-sized businesses. The subjects of this study were 211 employees, working at small- and medium-sized businesses that hired less than 300 workers. The collected data were analyzed using the IBM SPSS 29 program, through frequency analysis and independent samples t test. The results revealed significant differences in the domains of safety climate and compliance, accident rates, safety as a top priority, and the level of risk behavior management in small- and medium-sized businesses, based on whether risk assessment was conducted or not. The businesses that conducted risk assessment, demonstrated a higher level of safety performance than those that did not. These findings confirmed that risk assessment is an effective system to improve safety behaviors and prevent accidents at small- and medium-sized businesses. Further research should be conducted on the implementation of risk assessment in small- and medium-sized businesses and their resultant safety performance, to encourage more companies to adopt this practice. This will also facilitate risk assessment to develop into an effective measure for preventing industrial accidents and protecting the health and lives of workers.