• International Journal of Safety
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• 제5권1호
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• pp.5-9
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• 2006

The present study reports on the results of a risk survey of machinery safety at a shoe factory in Qingdao, China. The aim is to decrease industrial accidents and increase worker job satisfaction by searching for a change from a trend analysis and making improvements in problem areas. The first risk survey for machinery safety was carried out in April 2005. Based on the analysis of the survey results, machinery safety devices was installed in the factory by using CATlA V5. Also, we investigated job satisfaction concerning working apparatus and work tool improvement in a questionnaire about the working environment. The second survey of machinery safety was carried out in September 2005. We are in the process of comparing the first survey results with the second survey results in order to analyze decreasing trend in industrial accidents and improvement in job satisfaction. So far the data have shown improved short-term turnover and absenteeism. It means CATIVA V5 and CFR has had positive effect regarding safety in shoe manufacture industry. The survey with CATIVA V5 and CFR will be expanded to other East-Asian countries including Vietnam. The hope is that the present approach could make a significant contribution toward improved safety.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2024년도 제69차 동계학술대회논문집 32권1호
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• pp.321-324
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• 2024

본 논문에서는 LLM(Large Language Models) 기반의 STT 결합 챗봇 시스템을 제안한다. 제조업 공장에서 안전 교육의 부족과 외국인 근로자의 증가는 안전을 중시하는 작업 환경에서 새로운 도전과제로 부상하고 있다. 이에 본 연구는 언어 모델과 음성 인식(Speech-to-Text, STT) 기술을 활용한 혁신적인 챗봇 시스템을 통해 이러한 문제를 해결하고자 한다. 제안된 시스템은 작업자들이 장비 사용 매뉴얼 및 안전 지침을 쉽게 접근하도록 지원하며, 비상 상황에서 신속하고 정확한 대응을 가능하게 한다. 연구 과정에서 LLM은 작업자의 의도를 파악하고, STT 기술은 음성 명령을 효과적으로 처리한다. 실험 결과, 이 시스템은 작업자의 업무 효율성을 증대시키고 언어 장벽을 해소하는데 효과적임이 확인되었다. 본 연구는 제조업 현장에서 작업자의 안전과 업무 효율성 향상에 기여할 것으로 기대된다.

• 대한인간공학회지
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• 제5권1호
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• pp.43-48
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• 1986

This study aims to investigate the effect of biorhythm to work performance. In order to do this, the data are collected from the manufacturing factory which produce a sportware, and the statistical test are made to testify the relationship between the number of defective items and the biorhythm chart of the workers. The number of defective items which made in the peak day, usual day, and critical day on the worker's biorythm chart are compared with each other, and the statistical test are made to see if there are difference between them, and the correlation analysis are made to see if there is any correlation between the work performance and the biorhythm chart. The result of the statistical test shows that the biorythm of the worker gives an effect to his work performance with a correlation.

• 한국산업보건학회지
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• 제31권4호
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• pp.295-303
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• 2021

Objective: Paint manufacturing industry workers are exposed to various lung cancer carcinogenic substances including hexavalent chromium and crystalline silica. Studies have been conducted on lung cancer in Paint manufacturing industry workers and the concentration of hexavalent chromium in paint industry; however, the concentration of crystalline silica and hexavalent chromium and cases of lung cancer in a single Paint factory has never been reported in Korea. Methods: To determine whether the cancer was related to his work environment, we assessed the level of exposure to carcinogens during pouring and mixing talc and pigment. In addition, a mask fit test was performed for the worker. Results: Analysis of talc and silica bulk powder materials showed that crystalline silica (quartz) was 5% in talc and 100% in silica. The green and yellow pigments contained 87% and 92% of lead chromate, respectively. Our quantitative analysis of pigment powder samples showed that the hexavalent chromium contents quantified in the green and yellow pigment samples were 87% and 92%, respectively. In order to estimate his exposure level of hexavalent chromium, we measured a personal exposure level of hexavalent chromium for a worker in accordance with the National Institute for Occupational Safety and Health #7605 method. The results showed that the worker was exposed to the high level of hexavalent chromium (0.033 mg m-3). In addition, the talc powder also contained 5% quartz, and the worker's exposure level to respirable quartz exceeded OEL. As a result of the respiratory protection fit test for workers, the overall Fit Factor was '15' when wearing a second-grade mask and '25' when wearing a first-grade mask, significantly lower than the US Occupational Safety and Health Agency (OSHA) pass value of "100". Conclusion: Workers who pouring and mixing powder materials such as talc or colored pigments in paint manufacturing company may be exposed to high concentrations of carcinogenic substances. These findings indicate that it is necessary to local ventilation system inspection, safety and health education for employers and workers, and periodically monitoring and manage the working environment.

• 한국인터넷방송통신학회논문지
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• 제18권5호
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• pp.237-244
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• 2018

중소기업 제조공장의 스마트팩토리 수준이 현재에는 기초 수준으로 창고를 관리하기 위해 재고 입출입에 따른 정확한 재고량을 파악하는 시스템이 부족하다. 또한 근로자 수작업과 경험에 의한 생산방식으로 데이터 손실로 정확한 자재를 관리하기 어려운 상황이다. 이를 해결하기 위해 근로자의 재고 파악을 위한 수작업을 최소화하며 자동화를 향상시키기 위해 재고량 자동 수집을 진행한다. 본 논문에서는 IoT기반의 자율이동모듈을 이용한 스마트 창고관리 시스템으로 자율이동모듈이 창고를 이동하면서 재고 보관함의 데이터를 수집한다. 이는 해당 보관함의 자재들 파악하기 위해 카메라 모듈이 비전처리 방식 통해 재고보관함의 네임텍을 인지한다. 인지한 문자화 처리 결과가 일치할 때 센서에 의해 측정된 데이터가 서버로 전달되고 데이터를 처리하여 데이터베이스에 저장한다. 저장된 데이터는 관리자용 웹 기반 모니터링 환경에서 실시간 재고량을 파악할 수 있다. 이를 통해 수작업을 줄이고 자동화된 재고관리시스템의 효과를 기대한다.

• Journal of Preventive Medicine and Public Health
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• 제28권3호
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• pp.551-562
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• 1995

To assess the status of safety accidents, authors reviewed and analysed the records of safety accidents of a welding material manufacturing factory at Pohang city from January 1989 to December 1993. The results are; 1. The total incidence of safety accidents was 295 spells for five years. 2. Average age of workers with accident was 35.7 years. Average duration of employment was 6.2 years and the duration of employment increased as the year increased. 3. There was no statistical significance on season, month, weekday and time by year in the incidence of safety accidents. The most frequent part of body injured was upper extremities and the most frequent type of injury was abrasion. 4. Mean admission rate of safety accidents was 12.6% and the ratio of treated spells as occupational injury was 7.8%. 5. The most frequent cause of injury was worker's mistake and the most frequent action for the prevention of further accidents was safety education. 6. The incidence rate of safety accidents on 1993 was 116.2 spells per 1,000 persons. Above results suggest that to prevent safety accidents, safety education should be done continuously, the environmental and human factors were controlled and more exact reporting system of safety accidents was needed.

• 시스템엔지니어링학술지
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• 제11권2호
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• pp.41-49
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• 2015

Industrial safety is one of the crucial agenda for Government as well as Manufacturing Industry. To cope with the needs, a great deal of policies and technical implementation have been proposed and implemented. With a great increasing attention on the Industry 4.0 and Smart Factory, industrial safety has received as a crucial agenda by the manufacturing industry in particular. Up until now, almost all of them have been made from the environmental aspects, rather than operator or workers. In this paper, we present our research results how to increase the workers' safety via smart factory technology, such as IoT and CPS. Our approach has been to see the problem from SE perspectives, to draw the real issues from the various stakeholders, and define how to solve the problem based on the emerging technologies. The developed systems can give conceptual framework for the 'smart' industrial safety system by providing solution architecture for how to monitor the location of workers, and moving equipments, and generate solutions how to avoid safety problems between them if detected.

• 한국직업건강간호학회지
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• 제18권2호
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• pp.153-164
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• 2009

Purpose: This study investigates the relationship between job stress, depression, health-related behavior and type A behavior patterns among male workers at a steel factory. Methods: The study was done on 171 male workers, using the structured questionnaire. The data were collected in April, 2009 and analyzed by descriptive statistics, t-test, ANOVA, and pearson correlation coefficient. Results: The results showed that 65.5% of workers were under moderate stress, 25.7% high stress and 0.6% extremely high stress. The overall score of these workers' occupational stress was 41.9, lower than the Korean workers' average. Occupational stress was correlated with depression, type A behavior patterns, a very poor physical condition without sufficient sleep. Conclusion: Stress management program is strongly needed for these subjects working over 45 hours a week, with a very poor subjective physical condition, insufficient sleep, type A behavior patterns and signs of severe depression. Further longitudinal study is recommended to show the effect of such worker's stress management program to mitigate job-related stress.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.235-239
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• 2009

As robotic technologies have become more actively utilized to automate many construction tasks, they have been able to improve the construction productivity, quality, and worker's safety on site. A new advanced system, Robot-based Construction Automation (RCA) system, is currently being developed. To accomplish RCA system effectively, Design for automation (DFA) should be performed in automation system developing phase. The performance criteria of this system are a major cause of design changes. It is required exhaustive review for development new system. This research analyzed the design changes of Climbing Hydraulic Robot system and Construction Factory (CF), being currently developed in the field of applied RCA systems. And the design change matters according to performance criteria in each system's design-by-step were analyzed. The purpose of this research is developing the performance criteria in the developing phase of RCA system, and then will be served as basis for system design in similar projects.

• 한국식품영양과학회지
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• 제40권2호
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• pp.274-282
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• 2011

본 연구는 학교급식 식재료의 위생관리 실태를 파악하기 위하여 식재료 생산 가공업체의 생산직원 221명을 대상으로 위생지식을 조사하고, 위생관리 수행수준, 위생관리 현황을 5점 척도로 평가하였다. 생산직원의 위생관리 수행수준의 평균은 4.63/5.0점으로 높은 편이었으나, 위생 지식수준은 4.63/9.0점으로 낮았다. HACCP 인증업체 직원의 위생교육 횟수, 만족도, 위생관리 태도 등이 비인증업체에 비해 유의하게 높았고(p<0.05), HACCP 비인증업체에서의 시설설비에 대한 관리가 요구되었다. 또한 위생관리 수행영역에서 작업대와 작업장의 매일 청소 및 철저한 소독, 냉장고와 냉동실의 청결유지, 작업장의 온도확인, 작업 중 교차오염 방지, 작업 중 작업도구의 철저한 소독, 작업장 출입 시 신발소독 및 에어샤워, 작업복의 매일 세척의 항목은 HACCP 비인 증업체에서 유의하게 잘 지켜지지 않아 위생교육 및 평상시 작업관리 시 철저한 관리가 요구되는 항목이었다. 생산직원들이 학교급식 식재료를 생산하면서 가장 어려운 점은 위생관리와 납품시간 맞추기였고, 위생교육의 불만족한 이유는 일방적인 강의 때문이 가장 높았다. 따라서 생산 가공업체 에서는 교육대상자의 요구에 맞추어 위생교육 내용을 선정하고, 일방적인 강의형식의 교육보다는 활동자료나 교육매체를 활용한 보다 능동적이고 흥미로운 위생교육을 실시하여 교육효과를 최대한 높일 수 있도록 하여야 할 것이다.