The findings were summarized as follows. The safety check by manufacturer showed that 6 of 13 companies are over the average occurrence of defects. It was expected that there would be a difference between manufacturing technology capability and production system of each manufacturer. Consequently, manufacturers should institutionally improve and strengthen certification items for the upward standardization of safety certification before factory. Second, the safety check by year showed that the results of this study accord with those of previous studies on defect time. Consequently, manufacturers should classify the 3-year-old equipment for vehicle-mounted MEWP into a special check subject to do a nondestructive test according to proven results, and also reflect the test in a safety test system to do regular preventive activities of equipment defects. Third, the safety check by part showed that the boom and outrigger parts of vehicle-mounted MEWP have the most defects. Stress concentration resulted in defects as the boom part was most frequently operated in the structural parts for a real work. To prevent this, it is suitable to improve the hardness of boom materials. The outrigger part needs improvement in safety devices with materials. As an outrigger supports the overturning moment of equipment, it is most affected by its load based on the operating radius, resulting in fatigue crack.

목적 : 본 연구는 완전척수손상자(C5∼C6) 3명을 대상으로 목과 상지의 근활성도, 근골격계의 피로인지도, 그리고 보조도구로 인한 작업수행도와 만족도의 변화를 측정하여 휠체어용 키보드 작업대의 효과를 알아보고자 실시되었다. 연구방법 : 3명의 척수손상자는 손바닥 지지용 키보드 포인터를 착용한 채 두 가지 작업대(일반책상, 휠체어용 키보드 작업대)에서 5분간 초 당 1타 정도의 속도로 문서 입력 작업을 실시하였다. 실험 동안 목세움근, 위 등세모근, 중간 등세모근, 그리고 손목 폄근군의 근활성도(%RVC)를 표면근전도로 측정하였다. 근골격계의 불편함은 Borg RPE를 이용하여 측정하였으며, COPM은 휠체어용 키보드 작업대의 작업수행 증진도와 만족도를 알아보고자 사용하였다. 결과 : 휠체어용 키보드 작업대를 사용한 결과 목, 어깨, 그리고 손목폄근군의 근활성도가 감소하였다. 또한 피로인지척도 점수가 감소하였으며 COPM의 작업수행도와 만족도도 증가하였다. 결론 : 일반책상과 휠체어용 키보드 작업대를 비교한 결과, 척수손상자의 키보드 입력 작업시 휠체어용 키보드 작업대가 유용 하였다. 이러한 과제 조정은 척수손상자의 상지 통증과 누적외상성 질환을 예방하기 위한 인간공학적 접근을 기초로 이루어져야 한다. 차후 연구에서는 보다 다양한 기능수준의 척수손상자를 위한 인간공학 도구의 개발과 객관적 효과 검증이 필요하다.

As contemporary building construction type is getting higher and deeper, construction equipment usage is getting more, and related fatal accidents are on an increasing trend. Because of this, a method was drawn which could grasp the present state of construction equipment management and manage safety of the equipment more easily for accident prevention by choosing 2 kinds of Construction equipment which cause safety accident frequently among the equipment mainly used in construction site. This study suggested a method about construction equipment safety management using "smart phone" base which could be used in safety management for construction equipment by whomever in construction site. After attachment of QR code included safety checklist, It became possible that site managers could check more efficiently by scanning with their smart phone when they inspect equipment. Moreover, by the construction interested who didn't know what and how they have to inspect could point out unsafe condition in the early stage of equipment entering or take unsafe one out of the site by using new smart phone safety checking system is installed, it became possible that critical accident caused by construction equipment was prevented in advance.

As contemporary building construction type is getting higher and deeper,construction equipment usage is getting more, and related fatal accidents are on an increasing trend. In these days, due to the deteriorating construction business circumstance, job finding problem of equipment operator, and dumping contract, equipment lease suppliers are putin jeopardy. In high-rise building construction, especially tower crane, mobile elevated work platform and other High place operation cars among construction equipment cause many critical accidents because of drop supply of construction biding bringing out dumping contract could cause unsafe and poor construction management. Because of this, a method was drawn which could grasp the present state of construction equipment management and manage safety of the equipment more easily for accident prevention by choosing 2 kinds of Construction equipment which cause safety accident frequently among the equipment mainly used in construction site. This study suggested a method about construction equipment safety management using ‘‘smart phone’ base which could be used in safety management for construction equipment by whomever in construction site. After attachment of QR code included safety checklist, It became possible that site managers could check more efficiently by scanning with their smart phone when they inspect equipment. Moreover, by the construction interested who didn’t know what and how they have to inspect could point out unsafe condition in the early stage of equipment entering or take unsafe one out of the site by using new smart phone safety checking system is installed, it became possible that critical accident caused by construction equipment was prevented in advance.

This study was performed to design and develop an ergonomic equipment for strawberry sorting and packing in agricultural working environments. Potential risk of work related musculo-skeletal disorders associated with farm workers performing strawberry sor

Aerial working platform is recently used broadly in heavy industry and construction field and also the utilization of it is growing. However, the raise of critical incident caused by unskilled operator is increased gradually. To reduce and prevent such incident, the training for operating is essential. It's not easy to cover the requirements for the training with real platform because of the high price of it, safety and weather condition. This paper proposes a simulator for the training based on virtual reality to give the training safely regardless to the weather condition and the simulator is deliverable in lower price than real one. The simulator proposed in this paper is available to be set according to the level of trainee's skill managing and be also applied for the design of general heavy equipment training simulator.

Aerial working platform is recently used broadly in heavy industry and construction field and also the utilization of it is growing. However, the raise of critical incident caused by unskilled operator is increasing gradually. To reduce and prevent such incident, the training for operating is essential. It's not easy to cover the requirements for the training with real platform because of the high price of it, safety and weather condition. This paper proposes a simulator for the training based on virtual reality to give the training safely regardless to the weather condition and the simulator is deliverable in lower price than real one. The simulator proposed in this paper is available to be set according to the level of trainee managing the assessment level and be also applied for the design of general heavy equipment training simulator based.

한국원자력연구소에서는 현재 사용후핵연료의 효율적인 관리를 위한 차세대관리 종합공정 (ACP)의 실증용 핫셀을 건설중에 있다. 본 논문에서는 핫셀 내부의 리어도어(rear door)와 만나는 부분에 설치될 작업대(working table)의 구조적 안전성을 유한요소 해석을 통해 평가하였다. 이 부분의 작업대는 물품들의 반출입을 위해 개폐식으로 설계되었기 때문에 다른 작업대에 비해 지지 부위가 적으므로 구조적 안전성 평가가 반드시 필요하다. 핫셀을 가동할 때 작업대 위에 공정 장치들을 반입하거나 핫셀 크레인을 사용해 적재하게 되므로, 안전성 평가를 위해 정적 구조 해석과 동적 구조 해석들 함께 수행하였다. 해석 결과를 통해 두 경우 모두에 대해 개폐형 작업대가 구조적으로 충분히 안전함을 확인할 수 있었다. 또한 50 cm 낙하 충돌의 경우에도 작업대의 파손이나 붕괴가 일어나지 않고 안전성이 유지되었다.

목적 : 본 연구는 컴퓨터 사용시 발생하는 통증 유무 및 그 부위에 대해 알아보고, 컴퓨터 작업 자세 및 환경과 통증의 관계를 확인하고자 하였다.연구방법 : 연구대상자는 모대학교에 재학 중인 대학생 600명을 대상으로 설문 조사를 실시하였다. 설문지의 내용은 대상자의 일반적인 사항, 컴퓨터 사용 실태에 관한 항목(종류: 데스크 탑, 노트북, 이용 목적, 이용 장소, 이용 시간, 휴식 시간, 통증 정도, 통증 부위 등), 컴퓨터 작업대에 관한 항목(책상, 의자, 모니터, 키보드, 마우스)을 포함한 총 36문항으로 구성되어 있다. 컴퓨터 작업대에 관한 항목은 Ergonomics Working Group에서 개발한 Creating the ideal computer workstation: A step by step guide의 작업대 평가 부분을 번역, 수정한 것으로 컴퓨터 작업대에 관한 점수가 높을수록 통증을 유발시키는 위험이 높아진다는 것을 의미한다. 수거된 설문지는 총 414부였고, 결과분석은 불성실하게 응답한 설문지를 제외한 총 321부의 설문지 결과를 SPSS를 사용하여 빈도분석, 상관관계분석, independent t-test를 실시하였다.결과 : 컴퓨터 사용과 관련하여 통증을 느끼는 학생이 전체의 80.4%였고, 어깨/목(38.4%), 허리(28.5%), 손/손목(25.9%) 부위의 통증을 호소하였다. 통증과 유의한 상관관계를 보인 컴퓨터 작업대에 관한 항목은 모니터, 의자, 키보드였고, 통증유무에 대한 컴퓨터 작업자세 및 환경평가점수를 비교한 결과 통증이 있는 경우 컴퓨터 작업대에 관한 점수가 유의하게 높았다(p<.05).결론 : 본 연구를 통하여 컴퓨터 작업대 환경이 좋지 않을수록 근골격계 통증에 영향을 미치는 것을 알 수 있다. 컴퓨터를 빈번하게 다루는 학생 또는 사무직 근로자들에게 근골격계 예방을 위한 적절한 자세에 대한 교육 및 컴퓨터 사용 환경에 대한 인간공학적인 평가가 필요하다고 사료된다.