한국인 20대 남성의 NIOSH Lifting Equation 계수평가에 관한 연구

배동철 ( Dong Chul Bae ),김용재 ( Yong Jae Kim ) 한국안전학회 2009 한국안전학회지 Vol.24 No.4

The objective of this paper was to evaluate the effectiveness of horizontal, vertical, asymmetric and coupling multipliers for manual material handling. Lifting tasks with 5 different horizontal distances (30~70cm) for 6 vertical distances(ankle, knee, waist, elbow, shoulder and head height) were experimented. The muscle activity and muscle exertion level during asymmetric load handling(without trunk flexion) was experimented. Lifting tasks with and without handle tote box for three postures(straight, bending, right angle posture) were experimented. The degrading tendency did not appeared almost in 60~70cm interval`s horizontal distance. As a result of ANOVA, MVC paid attention to horizontal and vertical distance but cross effect was insignificant(p<0.01). The change of the MVC according to the horizontal, vertical distance appeared similar from of RWL. The results of normalized MVC measurement were decreased about 16%, 24%, 34% respectively as the asymmetry angle was 30˚, 60˚, 90˚. RMS.EMG values of right erector spinae muscles were decreased as the work posture went to 90˚ and those of left erector spinae muscles were increased until the asymmetry angle was 40˚ but decreased continually over 40˚. 7 subjects, activities of left and right latissimus dorsi muscles were maintained constantly, while for remainer, those were irregular. MVC reduced maximum 23% by type of handle. MVC was highest in straight posture, but was lowest in right angle posture. As a result of ANOVA, MVC paid attention to posture, coupling(p<0.01). To all handle types, biceps brachii activity was increased in right angle posture, but reduced in straight posture. Based on the results of this study, it is suggested that the NIOSH guideline should not be directly applied to Korean without reasonable reexamination. In addition, we need to afterward study through an age classification.

산업재해 예방을 위한 재정지원사업의 수요자 설문조사를 통한 제도적 개선방안 연구

배동철 ( Dong Chul Bae ) 한국안전학회(구 한국산업안전학회) 2018 한국안전학회지 Vol.33 No.4

The purpose of this study is to conduct surveys on demanders using financial aid projects to prevent industrial accidents and to improve them. It is divided into clean business and loan support business through the structured questionnaire. In the case of clean business, the following results were obtained. Most of the applications were received within three months after application. The most important factor considered by the consumer is the amount of support, which is considered to consider the substantial improvement as follows.The expectation for the reduction of industrial accidents after the project was 96.1% and compared to before and after the actual business, it showed a 46.8% decrease from the previous year. In addition, the cost decreased by 21.8%, the facility utilization rate increased by 24.4%, the sales increased by 15.9%, and the average number of workers increased by 6.0. As for the sustainability of the business, 86.6% of the respondents said that they should continue to do so. The following results were obtained in the case of loan support projects. Industrial accidents decreased by 45.2% from the previous year. Costs decreased by 19.4%, facility utilization rose by 26.7%, sales increased by 14.9%, and the number of workers increased by an average of 2.8. In the case of suppliers, prevention of industrial accidents at the business sites participating in the clean business was the highest factor (67.0%). 89% of respondents were aware of the disposal criteria for ineligible suppliers. 50.6% of the respondents answered that it is appropriate to maintain the current level, and 39.4% of respondents answered that they should strengthen. The prices for the support items were more than 15% higher than the market prices.

인간/시스템안전분야 : 한국인 20대 남성의 NIOSH Lifting Equation 계수평가에 관한 연구

배동철 ( Dong Chul Bae ),김용재 ( Yong Jae Kim ) 한국안전학회(구-한국산업안전학회) 2009 한국안전학회지 Vol.24 No.2

한국 요양보호사 산업재해의 연도별 변화추이

손미아 ( Mia Son ),전거송 ( Geo-song Jeon ),배동철 ( Dong-chul Bae ),손병창 ( Byungchang Son ),김태운 ( Taeun Kim ),윤재원 ( Jae-won Yun ) 한국산업보건학회 (구 한국산업위생학회) 2021 한국산업보건학회지 Vol.31 No.2

Objectives: To investigate the trends of industrial injuries among long-term health care workers in Korea Methods: T7866 injuries were selected from the total industrial injuries approved by the Industrial Accident Compensation Insurance Act(Occupational Safety and Health Act) among long-term health care workers between 2007 and 2016 in Korea. We analyzied the trends of industrial injuries according to work process, occurrence type, and causes. Results: The industrial injuries among long-term health care workers increased since 2012. The mostly occurred area for industrial injuries were low back areas, which is related that the most serious industrial injuries occurred when the one long-term healthcare worker lift manually the recipient, from bed(ondol, Korean floor heating system) to a wheelchair, bed to bath bed, and wheelchair to bath chair. In addition to this, lack of workforce, increased work intensity due to overwork contributed the increasing of occupational injury. Conclusions: This study suggests that the main causes of industrial injuries were Lack of facilities and equipment for small private long-term care institutions, The physical load that goes into lifting the recipient directly, work intensity such as excessive workload and increased work speed. We suggest that the social publicization of long-term care service for the elderly, avoiding ways to lift recipients directly, introducing lifting machines as well as improving working methods, and reducing the workload of caregivers are required.

중소규모 조선업 사업장을 위한 자율 위험성 평가 모델의 개발

임현교 ( Hyeon Kyo Lim ),이경태 ( Kyung Tae Lee ),배동철 ( Dong Chul Bae ),장성록 ( Seong Rok Chang ) 한국안전학회(구 한국산업안전학회) 2011 한국안전학회지 Vol.26 No.2

Industrial accident frequency in small- and medium-sized ship-building plants is much higher than that of large-sized ones so that safety management activities should be different. In that sense, voluntary hazard assessment would be helpful for small-and medium-sized plants. However, conventional hazard assessment items and methods had some problems that discouraged voluntary participation of plants concerned. This study aimed to develop a new model for small-and medium-sized ship-building plants that can promote and encourage voluntary hazard assessment activities. For that purpose, ship-building process was assumed as a sequence of phases, and accident characteristics were compared with them. From that result, relative weights of accident factors including ship-building phases, accident types, occupational category, accident-induced objects, and hazardous items were determined with accident frequency data and with the help of expert groups. Therefore, for web-based integrative computer programming, a plain but accident data-dependent model was developed, with an additive function for related agencies that want to collect assessment results. It is expected that this model would help small-and medium-sized ship-building plants that wanted not only simple checklists but also effective assessment and management guidelines.

연삭작업시 작업자세와 작업시간에 따른 근전도 분석에 관한 연구

장성록,배동철 한국산업안전학회 2001 한국안전학회지 Vol.16 No.1

Posture of the upper limbs in field works is known to be an important risk factor associated with CTD(Cumulative Trauma Disorders). In particular, uncomfortable posture and highly repetitive works in shipbuilding industry(for instance, sand blasting, grinding and blast painting, etc) made workers exposed to a great risk of injuries. The purpose of this paper is to analyze recruitment pattern of the muscles according to posture(joint angle displacement) during grinding. In this study, EMG signals of pectoralis major, latissimus dorsi, and posterior deltoid muscle were measured and analyzed from FlexComp EMG solution. And subjective ratings of perceived exertion were made using Borg's CR-10 rating scale.

인적오류에 의한 항공사고 분석

장성록,황진태,배동철 釜慶大學校 2001 釜慶大學校 論文集 Vol.6 No.-

This study aimed to investigate the human-related causes of aircraft accidents and present the basic data for developing human-error prevention program. Peterson's model of accident causation and Cooper's model of safety culture were applied to analyze the severe causes of aircraft accidents for last 10 years. For analyzing the causes of aircraft accidents, expert's opinion method was adopted. The analyses showed that the overload and decision error were major causes of aircraft accidents. The causes and backgrounds of human error were found with respect to human, tasks, organization.