Recently, elevator inspection and self-examination were strengthened through the revision of the Elevator Safety Management Act, but there have been no significant reduction in serious accidents and major failures. Therefore, the government intends to lay the foundation for reflecting the safety quality rating system, which adjusts the elevator inspection cycle, as a policy to induce safety management of preemptive and active management entities. This study systematically reviewed and classified the safety quality rating system for elevator inspection cycle adjustment in previous studies, collected expert opinions, and reconstructed the key items into realistic evaluation items, and evaluated and scored the relative importance of each factor through the AHP technique.

As the duty to report and investigate major elevator failures has expanded due to the total amendment of the Elevator Safety Management Act in 2018, more important information on major elevator failures that have been partially identified has been collected. As of 2019, the number of elevators in Korea exceeded 700,000, making it the eighth-class elevator powerhouse in the world, but there is a trend of increasing casualties due to accidents and breakdowns. An Seung-gang-gi is a term that encompasses an elevator that moves vertically and an escalator that moves horizontally. It is an important means of transportation for most citizens that are encountered almost every day in daily life, and it is also necessary as a means of transportation that enables the construction of skyscrapers. And it seems that its importance will never diminish in the future. Major elevator failures are the main cause of dispatch when accumulating the number of 119 dispatches, and the frequency of occurrence is high. It's a shame. According to Heinrich's Law, 300 minor signs and danger phenomena precede, 29 minor accidents and 1 major accident. Accidents caused by elevators are increasing every year due to the increase in the number of installations, and the damage is threatening the valuable lives and property of users and workers in related fields due to fatal risks such as death and serious injury. Elevator safety management can achieve its purpose only when it is managed with the usual interests, awareness of safety, and full efforts of the users, workers, and the government concerned. This study was analyzed based on 2019 data notified to the Korea Elevator Safety Agency on major breakdowns improved after the revision of the Elevator Safety Management Act in 2018, and a total of 8,256 data were analyzed using the SPSS 21 version, a statistical analysis tool, to analyze the correlation with technical statistics. Proceeded. Through the analysis, it was possible to obtain preventive safety management data to prevent serious elevator safety accidents from occurring, and to derive meaningful implications that related safety management and maintenance can be effectively operated to prevent serious failures. In addition, through this analysis, we expect the development of related industries and legal and institutional improvement.

Korea’s elevator industry is one of the world’s eighth-largest industrial sectors and the third largest in the world by new installations. This year, the number of elevators has exceeded 700,000, and the number of new installations is 30,000-40,000 every year. However, the news of elevator-related accidents is reported continuously through the media and the accident rate is not decreasing. In particular, among the recent accidents related to elevators, accidents related to elevator workers are increasing, causing social problems. This year, the National Assembly’s Environmental Labor Relations Commission’s National Auditors lost five lives a year and 12 elevator workers were killed in fall and stenosis accidents during the installation, maintenance and replacement of the elevators for about two years since 2018. It took place to adopt the representatives of four domestic elevator companies as witnesses. An elevator worker is a collective term for workers involved in the design, manufacturing, installation, replacement, maintenance, inspection, management, and supervision related to the elevator industry, and the related accidents are called elevator worker accidents. Analysis of elevator-related accidents in the past has shown that the fault of the user accounted for 70% of the total, and the fault of the worker accounted for about 2.5%, and the accident occurred to the user or the user due to carelessness of the worker during the lift-related work. Currently, elevator-related accidents are reported by the Korea Elevator Safety Agency under Article 48 of the Elevator Safety Management Act under the Ministry of Interior and Safety. If deemed necessary for the prevention and prevention of recurrence of an elevator accident, the cause and condition of the elevator accident may be investigated. However, the current draft law is limited only to elevators after installation inspection, and is separated from the Ministry of Employment and Labor’s data on accidents occurring in the manufacturing and installation stages related to the elevator industry. This study analyzes the recent safety accidents of elevator workers and prepares safety measures to prevent them through the risk analysis, and also draws out the problems and improvements of the current elevator worker accident investigation to find the elevator worker accident rate that is on the increase trend.

In this study, the elevator safety device was investigated analytically. It is the only safety device that can lift the brake in an emergency situation. When the safety device is in contact with the guide rail and the brakes applied, the structure can be stopped due to the friction occurring between them. Study on the shape of the portion contacting the safety device and the guide rail wedge directly were performed based on four cases. Each cases were classified according to the contact conditions. The contact conditions are mainly line contact, surface contact, and point contact. According to the contact conditions, the frictional stress due to the forced displacement that occurred during the elevator braking is also considered. For the perpendicular guide rail and sliding distance, the braking force shows excellent results for the line contact conditions. The results also showed less distribution.

일반적으로 화재 시에는 승강장의 승강기문을 통한 열전달 및 연기유입으로 인해 승강로 및 승강기 카 내부의 화재안전성이 확보되지 못할 가능성이 크므로 재실자가 승강기를 이용하여 피난하지 못하도록 하고 있다. 그러나, 소방관들은 일정 높이 이상의 건축물에서의 인명구조 및 화재진압을 위해 비상용 승강기를 사용하고 있으며, 특히 최근에는 국내에서도 유럽 등 해외 선진국과 마찬가지로 고층 건축물에 피난용 승강기를 설치토록 하여 화재 시에도 승강기를 통한 재실자의 피난이 이루어지도록 하는 등 승강기의 피난 용도로의 사용이 확대되고 있다. 이에 본 연구에서는 화재 시 재실자가 승강기를 이용하여 피난하는 상황에서 승강기 카가 화재가 발생한 층에서 정지할 경우를 가정하여 승강기 카에 대한 Mock-up 시험을 실시하여 인명 안전과 관련한 화재안전성을 향상할 수 있도록 관련 제도의 개선을 위한 기초자료를 제시하고자 하였다.