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KOREAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL

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수록범위 : 1권1호(1991)~32권1호(2022) |수록논문 수 : 1,081
한국산업보건학회지
32권1호(2022년 03월) 수록논문
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KCI등재

1납에 대한 국내 직업적 노출 문헌 자료 고찰을 통한 노출 특성 평가

저자 : 최상준 ( Sangjun Choi ) , 서성철 ( Sung Chul Seo ) , 박주현 ( Ju-hyun Park ) , 고동희 ( Dong-hee Koh ) , 김환철 ( Hwan-cheol Kim ) , 박동욱 ( Donguk Park ) , 최희은 ( Hee Eun Choi ) , 성예지 ( Yeji Sung ) , 오세은 ( Se-eun Oh ) , 고경윤 ( Kyoung Yoon Ko )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 1-9 (9 pages)

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Objectives: The purpose of this study is to evaluate exposure characteristics of lead using data from the domestic occupational exposure literature.
Methods: Occupational airborne exposure data on lead reported in the domestic literature from 1981 to 2018 were collected and re-analyzed. The exposure levels in the data were expressed as an estimated arithmetic mean and a weighted arithmetic mean (WAM) of the number of samples. Lead exposure characteristics were analyzed by industry, process, and year.
Results: From a total of 14 documents, 8,305 airborne lead measurements for 17 industries were identified, and the WAM concentration in eight industries exceeded the occupational exposure limit of 50 ㎍/㎥. Three industries (battery manufacturing, lead smelting, and litharge manufacturing) accounted for 95% of the total data, and exposure trends could be confirmed over 10 years. Exposure levels continue to decrease in all three industries.
Conclusions: Considering the distribution outlook of lead and lead compounds, the main management targets are lead storage battery manufacturing and secondary smelting for lead regeneration.

KCI등재

2LCD 제조공정 종사근로자의 극저주파자기장 노출특성 연구

저자 : 김준범 ( Joonbeom Kim ) , 강준혁 ( Joon Hyuk Kang ) , 정은교 ( Eun-kyo Chung ) , 정기효 ( Kihyo Jung )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 10-20 (11 pages)

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Objectives: The aim of this study is to evaluate exposure levels of the extremely low frequency magnetic fields(ELF-MF) radiated from various electric facilities in Liquid Crystal Display(LCD) manufacturing processes.
Methods: This study measured the exposure levels of personal and local ELF-MF for the electronic facilities installed in two LCD manufacturing companies. Samplers were installed around workers' waist during working hours to identify personal exposure levels, and direct reading equipment were located at 3 cm, 10 cm, and 30 cm away from the surface of the electronic facilities to measure local exposure levels. Average and maximum(ceiling) values were calculated for personal and local exposure levels.
Results: Average and maximum of personal exposure levels for each worker were 0.56(mean) ± 0.02(SE) μT and 6.31 ± 0.75 μT, respectively. Statistical analyses of the study found that maximum of the personal exposure levels for engineers was significantly higher than that for operators since engineers spend more time near the electronic facilities for repairing. The range of maximum personal exposure levels was 0.50 ~ 43.50 μ T and its highest level was equivalent to 4.35 % of ACGIH(American Conference of Governmental Industrial Hygienists) exposure limit value(1 mT). Maximum of local exposure levels was 8.18 ± 0.52 μT and the electronic facilities with higher exposure levels were roof rail and electric panel, which were not related to direct manufacturing. The range of maximum local exposure levels was 0.60 ~ 287.20 μT and its highest level was equivalent to 28.7 % of the ACGIH exposure limit value. Lastly, the local exposure levels significantly decreased as the measurement distance from the electronic facilities increased.
Conclusions: Maximum of personal and local exposure levels did not exceed the exposure limit value of ACGIH. However, it is recommended to keep the workers as far as possible from the sources of ELF-MF.

KCI등재

3불검출 자료를 포함한 작업환경측정 자료의 분석 방법 비교

저자 : 박주현 ( Ju-hyun Park ) , 최상준 ( Sangjun Choi ) , 고동희 ( Dong-hee Koh ) , 박동욱 ( Donguk Park ) , 성예지 ( Yeji Sung )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 21-30 (10 pages)

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Objectives: The purpose of this study is to suggest an optimal method by comparing the analysis methods of work environment measurement datasets including left-censored data where one or more measurements are below the limit of detection (LOD).
Methods: A computer program was used to generate left-censored datasets for various combinations of censoring rate (1% to 90%) and sample size (30 to 300). For the analysis of the censored data, the simple substitution method (LOD/2), β-substitution method, maximum likelihood estimation (MLE) method, Bayesian method, and regression on order statistics (ROS)were all compared. Each method was used to estimate four parameters of the log-normal distribution: (1) geometric mean (GM), (2) geometric standard deviation (GSD), (3) 95th percentile (X95), and (4) arithmetic mean (AM) for the censored dataset. The performance of each method was evaluated using relative bias and relative root mean squared error (rMSE).
Results: In the case of the largest sample size (n=300), when the censoring rate was less than 40%, the relative bias and rMSE were small for all five methods. When the censoring rate was large (70%, 90%), the simple substitution method was inappropriate because the relative bias was the largest, regardless of the sample size. When the sample size was small and the censoring rate was large, the Bayesian method, the β -substitution method, and the MLE method showed the smallest relative bias.
Conclusions: The accuracy and precision of all methods tended to increase as the sample size was larger and the censoring rate was smaller. The simple substitution method was inappropriate when the censoring rate was high, and the β-substitution method, MLE method, and Bayesian method can be widely applied.

KCI등재

4DID와 PSM 분석을 통한 건설업 클린사업장 대상 재정지원사업 평가

저자 : 장성은 ( Seong-eun Jang ) , 유성열 ( Sung-yeol Yu ) , 김화일 ( Hwa-il Kim )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 31-40 (10 pages)

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Objectives: The purpose of this study is to understand the impact on accident reduction by analyzing the policy effectiveness of an industrial accident prevention clean workplace support project targeting the construction industry.
Methods: In this study, DID and PSM models were used to analyze workplaces receiving and not receiving financial support based on the status of industrial accidents in recent years and the status of the workplaces by year.
Results: The research results show that meaningful effects continued to occur in terms of reducing accidents and increasing employment.
Conclusions: In this study, we show the effectiveness of the clean workplace support project, one of the South Korean government's financial support projects in the field of occupational safety and health focusing on the construction industry. Financial support projects such as clean projects should be further expanded based on the results of this study.

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5청소노동자 화학물질 노출 관리의 제도적 한계 고찰 - 물질안전보건자료 작성·제출 제외 조항을 중심으로

저자 : 신새미 ( Saemi Shin ) , 기노성 ( Nosung Ki ) , 이혜민 ( Hea Min Lee ) , 김동현 ( Dong Hyeon Kim ) , 위서현 ( Seohyeon Wee ) , 변상훈 ( Sang-hoon Byeon )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 41-52 (12 pages)

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Objectives: This study intends to review the impact on cleaning workers and suggest directions for improvement by reviewing the legal and institutional ways in which Article 86 Nos. 7 and 16 of the Enforcement Decree of the Occupational Safety and Health Act work on the maintenance and promotion of cleaning workers' health.
Methods: The following laws and systems were reviewed and considered: First, the occupational safety and health legislation obligated or required to be applied to protect the health of cleaning workers; Second, the status of control of chemicals or mixtures used at cleaning sites through the Consumer Chemicals Product and Biocide Safety Control Act; Third, Control of consumer products according to foreign material safety data sheet related laws.
Results: Legal and institutional measures necessary to protect the health of cleaning workers include the legal control of harmful substances to be controlled, work environment monitoring, and special health examinations. The application of the Consumer Chemicals Product and Biocide Safety Control Act does not satisfy the legal and practical level of health maintenance and promotion required by the Occupational Safety and Health Act, and the communication of chemical information is insufficient. Overseas, there are restrictions on the use of consumer products in the workplace without material safety data sheets.
Conclusions: It is necessary to improve the system to ensure the health of workers handling consumer chemical products. The remaining laws and regulations exempted from the obligation to prepare material safety data sheets should be additionally reviewed.

KCI등재

6다회용 마스크 유형에 따른 성능 비교연구

저자 : 류회진 ( Hoe-jin Ryu ) , 박원희 ( Won-hee Park ) , 이춘영 ( Chun-yeong Lee ) , 정선옥 ( Seon-ok Jeong ) , 최희진 ( Hee-jin Choi ) , 이정미 ( Jeong-mi Lee ) , 황인숙 ( In-sook Hwang ) , 신용승 ( Yong-seung Shin )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 53-63 (11 pages)

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Objectives: This study was designed to evaluate the filtration efficiency, inhalation resistance, and liquid resistance of commercial reusable masks in comparison to the performance of KF-AD masks (reference masks).
Methods: Thirty-six masks were purchased from an online market. Filtration efficiency and inhalation resistance were determined in the same manner as in MFDS certification testing, respectively using TIL/IL & Filter Test 1300S (SFP Services, UK) and Breathing Resistance Analyzer DA2001 (Lambda Ray, South Korea).
Results: Most of the filtration efficiencies found for the 19 masks were far lower than the test standard for KF-certified masks. Four masks met KF94 and three masks even met KF80. Most inhalation resistances were also much lower than the standard, with many almost one-half of the standard. In addition, all the masks except KF-AD masks did not pass the liquid resistance test.
Conclusions: Although most of the filtration efficiency performance results found in this study for the reusable masks, which emerged as an alternative, were lower than the standard for health masks, multi-use masks can be used with a replacement filter inserted.

KCI등재

7근로복지공단 사례관리자의 업무 효율 및 스트레스에 영향을 미치는 요인

저자 : 이수진 ( Su-jin Lee ) , 김승원 ( Seung Won Kim )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 64-77 (14 pages)

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Objectives: The purpose of this study is to objectify the level of case management performance and the factors influencing performance, to improve the case management performance at the Korea Worker's Compensation & Welfare Service (KWCWS) on the basis of the recognition of the objective realities of case management by job coordinators at the KWCWS, to develop a model of case management fit for the KWCWS, and to provide a basis for establishing guidelines for standardized case management.
Methods: A total of 156 questionnaires were distributed to job coordinators at the KWCWS's headquarters, six regional headquarters, and 55 branches. One hundred forty-one questionnaires were collected and 126 were analyzed statistically using SPSS 21.0. Factor analysis and reliability analysis were conducted to verify the validity and reliability of the main measurement items in the research model. Frequency analysis was conducted for general characteristics of survey subjects. Frequency analysis or descriptive statistics were conducted to identify the level of independent variables (case manager's individual variables, job variables, institutional and organizational variables). Dependent variables (case management performance) and the degree of correlation were analyzed through correlation analysis between research variables. Multiple regression analysis and hierarchical regression analysis were conducted to examine the effect of independent variables on case management performance.
Results: The results of the study showed that the level of overall performance in the five stages of case management was ordinary, with an average level of 3.45 on a 5-point scale. Levels of performance by step were institutional approach and intake (3.69), assessment (3.63), goal setting and intervention planning (3.46), implementation of intervention plan (3.32), and evaluation and termination (3.20), in that order. The explanatory power of case management performance (overall) by case managers with the KWCWS was case manager's institutional and organizational variables, job variables, and individual variables, in that order. At each stage of case management, the explanatory power of a case manager's institutional and organizational variables was found to be the greatest. The model changes at each stage of case management assume similar aspects statistically. In hierarchical regression analysis, it was institutional support that had a significant effect on case management performance (overall), and institutional support had the greatest effect. The results of multiple regression analysis in which all variables are input simultaneously showed that institutional support and expertise as well as self-efficacy had a positive effect. However, case management work experience, expertise (technology), and autonomy were found to have a negative effect during the stage of case management performance.
Conclusions: As a result of the study, it was confirmed that raising the case manager's expertise and support from the institution and organization are important factors to improve the level of case management performance. The research also derived practical ways of reinforcement of case manager capacity, institutional and organizational support, operation of rehabilitation-case management teams, and occupational healthrelated aspects.

KCI등재

8사물인터넷 기술을 이용한 가스상 물질 측정용 스마트센서 개발과 향후과제

저자 : 김욱 ( Wook Kim ) , 김영교 ( Yongkyo Kim ) , 유연선 ( Yunsun You ) , 정기효 ( Kihyo Jung ) , 최원준 ( Won-jun Choi ) , 이완형 ( Wanhyung Lee ) , 강성규 ( Seong-kyu Kang ) , 함승헌 ( Seunghon Ham )

발행기관 : 한국산업보건학회 간행물 : 한국산업보건학회지 32권 1호 발행 연도 : 2022 페이지 : pp. 78-88 (11 pages)

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Objectives: To develop the smart sensor to protect worker's health from chemical exposure by adopting ICT (Information and Communications Technology) technologies.
Methods: To develope real-time chemical exposure monitoring system, IoT (Internet of Things) sensor technology and regulations were reviewed. We developed and produced smart sensor. A smart sensor is a system consisting of a sensor unit, a communication unit, and a platform. To verify the performance of smart sensors, each sensor has been certified by the Korea Laboratory Accreditation Scheme (KOLAS).
Results: Chemicals (TVOC; Total Volatile Organic Compounds, Cl2: Chlorine, HF: Hydrogen fluoride and HCN: Hydrogen cyanide) were selected according to a priority logic (KOSHA Alert, acute poisoning statistics, literature review). Notifications were set according to OEL (occupational exposure limit). Sensors were selected based on OEL and the capabilities of the sensors. Communication is designed to use LTE (Long Term Evolution) and Wi-Fi at the same time for convenience. Electronic platform were applied to build this monitoring system.
Conclusions: Real-time monitoring system for OEL of hazardous chemicals in workplace was developed. Smart sensor can detect chemicals to complement monitoring of traditional workplace environmental monitoring such as short term and peak exposure. Further research is needed to expand the scope of application, improve reliability, and systematically application.

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