학술논문
노후 엘리베이터의 위험성에 관한 연구 / A Study on the Risk of Decrepit Elevator
Document Type
Dissertation/ Thesis
Author
Source
Subject
Language
Korean
Abstract
본 논문은 2012년 발간된 안전행정부 승강기사고조사판정위원회에서 판정한 엘리베이터와 덤웨이터에서 발생된 사고사례를 조사하고 주요사고원인을 분석하여 기존 운행되고 있는 노후 엘리베이터에서 일어날 수 있는 여러 결함과 위험요인을 찾아 내고 위험성 분석을 통해 새로이 교체되는 엘리베이터의 안전성을 확보 할 수 있는 방안을 제시하였다.그 사례로는 전기설비 제어분야의 브레이크 3상 정류회로, 도어스위치의 모니터링 구성회로, 승강장 도어단락 감지회로, 브레이크 개방확인 감지회로등과 과부하감지스위치의 A접점 구성의 위험성 등이 있다.기계설비 장치분야의 상승과속방지 및 개문출발 방지장치, 도르래 보호망, 승강장문 이탈방지장치 등이 있다.또한 엘리베이터의 부품내구연한 산정결과에 따라 잔여수명이 산출된 자료를 통해 안전관리 주기에 따른 노후부품믜 최적의 교체시기와 항목을 제시하여 무분별한 교체에 따른 경제적 손실을 최소화하고 필수적으로 갖추어야 할 안전장치의 구성품을 제시하였다.본 논문을 통해 제기된 위험성분석에 따른 노후 엘리베이터의 불안전한 요소들이 교체과정에서 제거되어 이용자들의 안전확보와 국가적인 안전에 대한 인식이 제고되고 차후 관련 안전기준들이 보완되어 엘리베이터를 이용하는 국민의 안전의식수준이 향상되어 우리나라의 안전에 대한 이미지가 국제적으로 인정받는 계기가 되기를 기대한다.
This study examined accident cases of elevators or dumdwaiters. Those cases were judged and published by the judgment Committee on Accident Investigation of the Ministry of Security and Public Adminisration in 2012. This study analyzed main causes of accidents, discovered various defects and risk factors available on decrepit elevator, proposed ways ensuring safety of elevator by risk assessment.In electrical installation control field, there are cases of three-phase brake rectifier circuit, door switch monitoring circuit, hall door short detector sensing circuit, brake open confirmation sensing circuit and risk of over load switch at A contact.In machine equipment field, there are ascending car overspeed protection brake for elevator, starting with doors open protection device, traction machine sheave guard, and hall door keeping assistor.And this study proposed optimum replacement time and items of old parts according to safety mamagement cycles calculated by limit of endurance and residual life of elevator part. And this study proposed safety components which should be essentially epuipped to minimize economic loss by ill-considered replacement.Through this study, unsafe factors of decrepit elevators in the process of replacement are expected to be removed, recognition of user-safety and national safety is expected to be improved. Afterwards relative safety standards are expected to be compensated, level of elevator users safety consciousness is expected to be enhanced. And this study is expected to be an opportunity that Korean image of safety gets recognition internationally.
This study examined accident cases of elevators or dumdwaiters. Those cases were judged and published by the judgment Committee on Accident Investigation of the Ministry of Security and Public Adminisration in 2012. This study analyzed main causes of accidents, discovered various defects and risk factors available on decrepit elevator, proposed ways ensuring safety of elevator by risk assessment.In electrical installation control field, there are cases of three-phase brake rectifier circuit, door switch monitoring circuit, hall door short detector sensing circuit, brake open confirmation sensing circuit and risk of over load switch at A contact.In machine equipment field, there are ascending car overspeed protection brake for elevator, starting with doors open protection device, traction machine sheave guard, and hall door keeping assistor.And this study proposed optimum replacement time and items of old parts according to safety mamagement cycles calculated by limit of endurance and residual life of elevator part. And this study proposed safety components which should be essentially epuipped to minimize economic loss by ill-considered replacement.Through this study, unsafe factors of decrepit elevators in the process of replacement are expected to be removed, recognition of user-safety and national safety is expected to be improved. Afterwards relative safety standards are expected to be compensated, level of elevator users safety consciousness is expected to be enhanced. And this study is expected to be an opportunity that Korean image of safety gets recognition internationally.