• 한국안전학회지
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• 제38권2호
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• pp.15-22
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• 2023

In this study, the process and the environment of a melting furnace, located in Workplace A in Chungnam Province was inspected, and the insulation resistances of electrical circuits and motors were measured, and their changes over five years (2017-2021) were analyzed. It was found that the exhaust fan, oil pumps #A and #B, and heater were installed in 2010. Their insulation resistances decreased from 2017. Specifically, the insulation resistance of Oil Pump #A decreased from 100 (㏁) in 2018 to 20(㏁) in 2021, an 80% reduction. The fast decrease in insulation resistance was due to the high temperature of the melting furnace affecting surrounding the electrical facilities. A safety management scheme on the electrical facility of the melting furnace was proposed.

• 토지주택연구
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• 제10권3호
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• pp.67-75
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• 2019

The modular construction means that more than 70% of the parts such as walls, windows, electrical wiring, facility piping, bathrooms, and kitchen appliances are pre-assembled at the factory and transported to the site. It is possible to shorten the construction period than general construction work and to secure high quality through modular mass production since the modular construction works in the field at the same time as the modular production. However, there are only four domestic modular manufacturers, and each company's modular components and construction methods are different, so it is necessary to standardize them. Therefore, this study investigated the construction process centering on the stacking method of modular housing construction work applied to D site in Cheonan-si, and proposed the key points of quality management by construction stage. As the project was conducted as a pilot project for government R&D projects, some differences may occur from general modular housing construction. However, the construction process and quality control focus of each unit box type modular house analyzed in this study can be used as basic data in the future of modular housing construction. In addition, the results of this study can be used to establish construction standards, such as the development of checklists and establishment of standard processes.

• 대한안전경영과학회지
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• 제13권1호
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• pp.41-49
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• 2011

The automatic fire detection system is an important facility installed with focusing on minimizing the damage from a fire. This paper presents in the followings as the methods to reduce the false alarm of the automatic fire detection system; first, to prepare for legal standard so that revised legal standard can be applied to the fire fighting property prior to revision; second, to introduce the performance based fire detection protection design in the law based fire protection design; third, to maintain the wiring of worn-out detector; forth, to introduce an evaluation system to the education for the fire warden; fifth, to extend the standard of MTBF(meantime between failure) of the detector; sixth, to extend of installing the analog type detector; seventh, to improve the structure of reset switch.

• 설비공학논문집
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• 제29권5호
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• pp.269-277
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• 2017

This study consists of an analysis of pre-existing ceiling construction systems as well as the development of a replacement unitary, lightweight steel ceiling system and related legal standards. Based on the material conditions and progression of the study, appropriate components were chosen and details were modified by mock-up test. A final study model was evaluated for performance and adaptability based on four parameters (indoor environment, constructability, budget economy, and aesthetics) and compared to the pre-existing ceiling system. As a result of the initial study, a lightweight steel design was created consisting of a reinforced structure with modular bars and entry holes for components. This system was hung directly on the suspension structure. The new design increased lighting and acoustic performance adapted to an indoor environment. Moreover, the speed of construction was increased by approximately 30%, the cost was decreased by approximately 20%, and ceiling aesthetics were improved.

• 시큐리티연구
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• 제30호
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• pp.33-60
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• 2012

기계경비업무의 오경보는 불필요 출동에 따른 기계경비원의 사기저하, 업무량 증가에 따른 피로도 증가, 기계경비업자의 경영상 부담 증가, 고객의 불신으로 기계경비서비스 이용률 하락 등 여러 가지 심각한 부작용을 초래하게 된다. 따라서 본 연구에서는 현재 한국 기계경비업무의 오경보 대응책을 제시하고자 하였다. 본 연구에서는 오경보 대책의 시스템적 해결과제와 정책적 과제를 제시하였다. 시스템적 해결과제는 첫째, 기계경비업자는 최초 경비대상시설에 대한 Security Consulting 및 Security Planning 시점부터 정확하고 세밀하게 기계경비시스템을 구축하여야 한다. 둘째, 영상관제시스템의 설치 운용을 장려해야 한다. 셋째, 감지기 결선의 구분설치가 요구된다. 넷째, 시스템의 주요 원인별 오경보 대책을 마련해야 한다. 그리고 '세트 해제 알림음' 발생장치 설비 의무화를 검토해야 하며, 감지기별 특성에 따른 오경보 대책이 마련되어 표준화되어야 한다. 다섯째, 보수점검을 강화해야 한다. 오경보 대책의 정책적 과제는 첫째, 교육훈련의 강화가 요구된다. 기계경비업자 스스로 개별적 양성교육과정을 운영하거나 또는 "경비업법"상의 직무교육시 오경보 대책 등에 대한 집중적인 교육이 필요하다. 둘째, 법제적 규제강화와 장치의 마련이 요구된다. 경찰기관에서 오경보관련 서류를 표준화하여 서식으로 제공하고, 이러한 서류를 정기적인 신고사항이나 제출서류로 의무화한다면 향후 오경보 대책이 실질적인 자료에 기초하여 좋은 대책들이 나올 수 있을 것으로 기대된다. 셋째, 오경보 대책방안을 논의할 수 있는 '기계경비업무 오경보 대책 협의회'와 같은 협력기구의 구성과 운영을 제안한다. 넷째, 기계경비업자와 기계경비지도사의 관심과 역할 증대가 요구된다.