폭발사고예방을 위한 위험물 교체작업의 안전교육 ( safety Education for Workers changing Explosive Gases )

임현교 대한인간공학회 1997 대한인간공학회 학술대회논문집 Vol.1997-2 No.-

사고 특성요인들의 다중대응분석에 기반한 연구실안전 개선 방안

임현교,김윤태 한국안전학회 2024 한국안전학회지 Vol.39 No.1

Unlike in general manufacturing process, safety management in laboratorybased research area is complicated because the latter generally involves trying untested methods or handling unusual substances in small amounts. Laboratory accidents in South Korea have recently shown an increasing trend. Unfortunately, statistics on such accidents are not officially published by any domestic public agencies. In this study, multivariate analysis was performed on the relationships between variables to develop effective strategies for preventing laboratory accidents. A Cross-Tabulation Analysis of accident-related factors in 179 accident cases revealed that the laboratory type, accident type, and unsafe-act type are all statistically significant, whereas the unsafe condition and management factors differ with the statistical criteria. Furthermore, the results of a Multiple-Correspondence Analysis showed that accidents can be divided largely into three groups having different accident causes and injury types; this confirms the necessity of different strategies to prevent accidents of each type. The findings also reveal differences between the distribution of accident types mentioned in the accident case collection books and actual reported cases. This suggests that an official statistical system administered by a public institution would be necessary for effective prevention of laboratory accidents.

제조물책임법에 대비한 산업안전분야의 대응방안

임현교,이동하 한국산업안전학회 2001 한국안전학회지 Vol.16 No.4

From July 1st, 2002, the Product Liability Act will be efficacious in Korea, and its influence will be prevalent over all industrial fields. However, little attention has been paid to the Act and its influence in the area of Industrial Safety. Therefore, this paper aimed to call the people's attention to them, and to suggest some points for counterplans in that area. As for counterplans to the Product Liability, there are two different approaches - Product Liability Prevention (PLP) and Product Liability Defense (PLD). Between them, PLP is more safety-oriented approach, and especially Product Safety (PS) will be the core of it. Related with this, it was noted that productive goods which are utilized as productive materials or tools in the later process or industries could be troublesome when the Act is efficacious. As a solution, the necessity of cooperation among manufacturing plants belong to the similar industry, and of development of qualitative techniques applicable to analyses of consumer's behavior was emphasized. And, the interest and participation of Human Behavioral Scientists, Ergonomists as well as Consumer Psychologists were called upon. Also, it was suggested that an integrative approach including administrative or governmental management system for industrial goods should be developed.

고령자의 수지기능 특성

임현교,고병인 대한인간공학회 2007 대한인간공학회 학술대회논문집 Vol.- No.-

This study was performed to establish reasonable criteria for the requirement of finger function characteristics of the Aged. Based on the result of the study, the ratios of the reduction of finger functions in male the aged were more remarkable than those in female. In grips, whereas male the aged exerted 54% of the function of the males in their 20's and 61% of the males in their 40's, female old persons exerted 63% of the function of each of the females in their 20's and 40's and this tendency was similar in grasping power, back strength or torque. In the patterns of muscular strength exertion too, old persons showed the characteristics of muscular strength exertion completely different from those of the persons in their 20's or 40's.

사고 유발 불안전행동의 위반 여부에 대한 객관적 판단절차 개발

임현교,함승언,박건영,이용희,Lim, Hyeon Kyo,Ham, Seung Eon,Bak, Geon Yeong,Lee, Yong Hee 한국안전학회 2022 한국안전학회지 Vol.37 No.2

When an accident occurs, the associated human activity is typically regarded as a "human error," or a temporal deviation. On the other hand, if the accident results in a serious loss or if it evokes a social issue, the person determined to be responsible may be punished with a "violation" of related laws or regulations. However, as Heinrich stated, it is neither appropriate nor reasonable in terms of probability theory and cognitive science to distinguish whether it is a "human error" or a "violation" with a criterion of resultant accident severity. Nonetheless, some in society get on the social climate to strengthen regulations on workers who have caused accidents, especially violations. This response can present a social issue due to the lack of systematic judgment procedure which distinguishes violations from human errors. The purpose of this study was to develop an objective and systematic procedure to assess whether workers' activities which induced industrial accidents should be categorized as violations rather than human errors. Various analysis techniques for the determination of violation procedure were investigated and compared using an analysis approach method. An appropriate technique was not found, however, for judging the culpability of intentional violations. As an alternative, this study developed the process of creating violations, based on cognitive procedure, as well as the criteria to determine and categorize an activity as a violation. In addition, the developed procedure was applied to cases of industrial accidents and nuclear power plant issues to test its practical applicability. The study demonstrated that the proposed model could be used to determine the existence of a violation even in the case of multiple workers who work simultaneously.

일반관리분야 : 폭발성 가스 실린더 교체작업의 인간신뢰성

임현교 한국안전학회(구-한국산업안전학회) 1997 97년 춘계학술논문발표회 논문초록집 Vol.- No.-

원통형 바늘 구조의 플라즈마 제트 방출 특성

임현교,김동준,김정현,한상호,조광섭,Lim, H.K.,Jin, D.J.,Kim, J.H.,Han, S.H.,Cho, G.S. 한국진공학회 2011 Applied Science and Convergence Technology Vol.20 No.1

The plasma emission characteristics are investigated in cylindrical syringe plasma jet device. Cylindrical syringe electrode is applied AC power using inverter. In the center of syringe is injected into a inert gas and plasma jet occurs. If there is no ground electrode, firing voltage is 3 kV and plasma column length is 10 mm. According to high firing voltage and large current, the plasma column length control is difficult. The case of an internal ground electrode, firing voltage is 1 kV. Because of the losing current from internal ground, even if a higher input voltage, plasma emission does not occur. The case of an external ground electrode, the plasma column can be controlled between 0~10 mm with change the applied voltage from 1 to 2 kV, and the discharging current changed from 1 to 4 mA. 유리관에 삽입된 주사기 바늘을 이용한 플라즈마 제트 장치의 특성을 조사하였다. 원통형 주사기 바늘 전극에 교류 고전압을 인가하고, 유리관 끝에 설치된 접지전극의 형태에 따른 플라즈마의 방출 특성을 조사하였다. 접지전극이 없는 경우 방전 개시 전압이 약 3 kV이며, 플라즈마 방사 길이는 약 10 mm이다. 또한 높은 방전 개시 전압으로 인하여 플라즈마 방사 길이 및 전류 최소량의 제어가 어렵다. 내부접지 전극의 경우는 방전 개시 전압이 약 1 kV로 낮다. 그러나 플라즈마 전류가 내부에 위치한 접지 전극으로 흐르기 때문에 유리관 끝으로부터 플라즈마가 방출되지 않는다. 외부접지 전극의 경우는 인가전압 1~2 kV에서, 방전 전류 1~4 mA이며 플라즈마 방사 길이를 0~10 mm의 범위에서 용이하게 제어된다.

반도체공장의 위험물 교체작업시 인적과오에 대한 정량적 분석

임현교 한국산업안전학회 1997 한국안전학회지 Vol.12 No.4

Most plants producing semiconductors use a lot of chemicals, hazardous materials, and explosive gases. Though those materials are hazardous too much, some works still have to be done manually by human workers. However, according to a historical survey, more than half industrial accidents of those plants resulted from human errors or malfunctions. Thus, this research aimed 1) to diagnose shifting hazardous materials of semiconductor plants, 2) to estimate failure probability of human workers through human reliability analysis, and 3) to find out the tasks on which educational emphasis should be put. Through personal interview and visiting working spots, shifting tasks were analyzed, and modelled into a 24-step work, and after that, THERP and ETA was applied. During the shifting work, estimated human failure probability under the assumption of independency, 2.3004E-05, underestimated that probability 8.1008E-05 which could be calculated under the assumption of dependency. And this analysis showed that gas leakage from an old cylinder occupies 78.27% in the case of independent failures whereas gas leakage from a new cylinder occupies 75.06% in the case of dependent failures. So it was concluded that dependency assumption may gloss real situations. In addition, confirming gauge of regulators and closing valves turned out to be the most important tasks than purge tasks.

운동신경만 침범한 대상포진 후 운동마비 -증례 보고-

임현교,박종현,이광호 대한마취통증의학회 2012 Anesthesia and pain medicine Vol.7 No.3

Segmental zoster paresis is characterized by skin rash, sensory change and motor weakness in the myotome that corresponds to the dermatome of the rash. Herpes zoster induced pure motor paresis is a rare complication of herpes zoster without sensory involvement in brachial plexopathy. We present a case of segmental paresis, which involved motor nerve without sensory nerve involvement electrophysiologically.

냉음극 형광램프의 임피던스 계측에 의한 플라즈마의 특성 분석

임현교,정종문,김정현,김동준,황하청,정재윤,조윤희,구제환,최은하,조광섭 한국진공학회 2009 한국진공학회 학술발표회초록집 Vol.36 No.-