• 한국안전학회지
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• 제31권5호
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• pp.141-148
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• 2016

There exists required safety integrity level (SIL) to assure safety in accordance with international standards for every electrical / electronics / control equipment or systems with safety related functions. The SIL is allocated from lowest level (level 0) to highest level (level 4). In order to guarantee certain safety level that is internationally acceptable, application of methodology for SIL allocation and demonstration based on related international standards is required. Especially, in case of the SIL allocation method without determining of quantitative tolerable risk, the additional review is needed to check whether it is suitable or not is required. In this study, the quantitative risk reduction model based on the safety integrity allocation results of railway platform screen door system using Risk Graph method has been examined in order to review the suitability of quantitative risk reduction according to allocated safety integrity level.

• 한국안전학회지
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• 제32권4호
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• pp.89-99
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• 2017

The purpose of this study is to analyze safety and health managers' perceptual maps on the effective educational contents and its methods of workplace safety and health education. Self-administered survey was successfully conducted to 582 workers who were 339 in manufacturing, 68 in construction, and 175 in service & others by industry classification. Survey sites were recruited based on business size, incidence of occupational accident, and compliance of workplace safety and health education regulation. Questionnaire included personal factors, workplace factors, and needs of safety and health education at work. Male workers were 85.3% and more than 50% were in their 30s and had university education. Overall needs of educational contents and its methods were greater in manufacturing and services than construction. Two dimensional properties of effective educational contents perceived were 'knowledge structure' which divided to safety and health, and 'behavior outcomes' which divided to indirect and direct. Two dimensional properties of educational methods were 'class activity' which divided to experience-based and verbal-based and 'class participation' which divided to passive and active. Effective educational contents and its methods perceived by safety and health managers commonly included the characteristics of direct, case-based, and participation.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.47-48
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• 2019

Currently, the government has made a lot of efforts to improve construction productivity but there are few studies which measure between safety perception level and productivity in the South Korean construction industry. Therefore, the objective of this study is to analyze correlation between safety perception level of domestic construction companies and construction productivity. To achieve the objective, first, the concept of safety perception level was defined. Second, the safety perception level and construction productivity were investigated in the case projects. Third, correlation analysis was conducted between safety perception level and productivity. As a result, it was concluded that a high level of safety perception of executive and manager would increase construction productivity. In addition, To improve the safety perception level in the construction company, it is suggested that the provision safety resources for managements and the equal communication system between workers and managements and the development safety education tools considering the worker's experience. In the future, these findings can be utilized to develop future evaluation tools for a safety perception level in domestic construction company.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 C
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• pp.1832-1834
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• 2005

In the electrical equipments, there are lots of phenomena such as loosening of connectin parts, So, heat generation and oxidation growth is considered to have a possibility to cause fire. In this Paper, we were carried out to study the oxidation growth and voltage waveform of connecting parts. In case of copper and copper connection, the growing of Cu2O elongated more than the other copper alloys. According to oxidation growth, the voltage waveform is distorted. And the contact voltage and the power dissipation increased rapidly.

• 한국안전학회지
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• 제34권1호
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• pp.98-107
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• 2019

In the case of a disaster, the damage caused by the disability vulnerability of persons with disabilities is significantly increased, discussing about a problem for the protection of the vulnerable class. However, until now policy, technology and response guidelines for disaster and safety have been focused on the general public. Therefore, it is necessary to develop customized support technology for disaster and safety considering vulnerable characteristics of vulnerable class. Firstly, it is necessary to prepare draft improvement proposal of act and support system related disaster and safety for persons with disabilities and older persons. So, this study was carried out analysis of act, policy and support system on disaster and safety for persons with disabilities and older persons of domestic and overseas in order to draw implication. Furthermore, we established direction for improvement of act and policy on disaster and safety for persons with disabilities based on the analysis, and suggested draft improvement proposal.

• 대한안전경영과학회지
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• 제24권2호
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• pp.33-39
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• 2022

In order to improve the implementation of safety and health education at the site for industrial accident prevention activities, research was conducted to minimize inconvenience and increase utilization by redesigning and developing existing education methods. To date, occupational safety and health education has been conducted without considering the general work characteristics and functional facilities (mechanical, electrical, instrumentation, chemical) of workers (mechanical: turbine, valve, pump, hydraulic system, electrical: generator, breaker, motor, etc.). In particular, plant facilities were classified as mechanical and electrical facilities to improve the methodology for industrial safety and health education for plant maintenance workers. In addition, the "One Page Education Plan" was announced as a learning case because the spread of COVID-19 infectious diseases made it impossible to reduce or control the number of people in all groups and groups. The improvement of this training method will play a major role in improving the effectiveness of safety education in power plant workplaces.

• 산업경영시스템학회지
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• 제44권2호
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• pp.132-139
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• 2021

The purpose of this study is to investigate the effect of organizational safety and health management activities on safety and health performance by using the results of safety activity level evaluation of public organizations. To this end, a research model was established by using three fields as independent variables among the four areas of the safety activity level evaluation index: safety and health system, safety and health activity plan, and safety and health activity level, and the safety and health activity performance field as a dependent variable. Correlation analysis and regression analysis between major variables were performed. As a result of the correlation analysis, the safety and health activity performance had a significant positive (+) correlation with all of the safety and health system, safety and health activity plan, and safety and health activity level. The safety and health system had a significant positive (+) correlation with the safety and health activity plan and safety and health activity level, and the safety and health activity plan had a significant positive (+) correlation with the safety and health activity level. And as a result of the regression analysis, it was found that the organization's safety and health system, safety and health activity plan, and safety and health activity level all had a significant positive (+) effect on safety and health activity performance.

• 한국화재소방학회논문지
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• 제27권2호
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• pp.40-45
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• 2013

전기화재는 다양한 원인에 의해 발생하고 있으며 최근에는 복합적인 원인에 의해 발생하기 때문에 전기적, 열적, 기계적, 환경적 영향에 의한 제품의 열화특성과 발열 메커니즘 등 체계적인 연구와 분석을 통한 과학적이고 합리적인 안전설계애안 제시를 위한 연구가 절실히 요구되고 있는 실정이다. 재해로 인한 인적 물적 손실은 국가와 기업의 대외 신뢰도 하락을 가져오고 있으며 제품 안전에 대한 수요는 무한 경쟁에 따른 규제완화의 이유로 증가하고 있다. 기업의 이미지를 증진시키고 국제적 경쟁력을 강화시키기 위해 제품에 대한 안전 설계는 반드시 필요하다. 본 논문에서는 사용량이 점차 증가하고 있는 에어컨에서 전기화재가 발생한 사례와 원인 및 재현실험을 통해 안전설계에 대한 제시를 위해 수행 하였으며 화재 예방대책 등의 기초 자료로 할용 가능할 것으로 기대한다.

• 한국가스학회지
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• 제16권6호
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• pp.29-33
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• 2012

이 연구에서는 최근의 액체수소안전관련 연구현황을 간략히 살펴보고자 한다. 액체수소 저장용기가 파손되어 액체수소가 누출될 수 있다. 누출된 액체수소는 풀을 형성하고 증발하여 수소증기 운을 형성한 뒤 증기운 폭발이 일어날 수 있다. 액체수소를 저장하고 있는 용기가 외부로부터 유입되는 열에 의하여 증발하는 가스를 처리하지 못할 경우에는 BLEVE가 발생할 수 있다. 압축된 수소가스가 있는 시설에서는 수소누출에 의한 제트화제가 발생하고 지연점화에 의하여 개방공간에서 플래시 화재 및 폭발이 발생할 수 있다. 이러한 여러 가지 사건에 대하여 최근의 기술개발과 향후연구개발 방향에 대하여 간략히 살펴보았다.

• 한국안전학회지
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• 제35권2호
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• pp.84-93
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• 2020

In recent years, the scale of damage from disasters such as earthquakes and large-scale fires and floods that are occurring in Korea is increasing. Accordingly, interest in urban disaster prevention that combines living infrastructure such as roads and parks is boosting, and it is urgent to prepare measures to reduce the damage scale of local cities. The purpose of this study is to derive implications for disaster prevention measures in areas where disaster prevention safety of local cities is weak through examples of disaster prevention safety of local cities in case of disaster. To this end, this study analyzed the regional characteristics, current status, and disaster prevention problems of regional cities in Japan, and selected disaster-vulnerable areas, and considered the distance relationship between disaster prevention bases through road network analysis. In addition, road closure simulation using ArcGIS Network Analyst was conducted to analyze disaster prevention safety in the area. As a result, the situation of the village which has a high possibility of isolation by natural disasters was grasped in advance. Through this, the suburbs confirmed the necessity of supplementing the disaster prevention function through transportation maintenance such as forest roads, and it was found that the city needs to prepare a risk management system. Furthermore, this study suggests the need for research on areas with a high possibility of isolation, especially in areas where disaster prevention functions are weak in local cities in case of disaster, and shows countermeasures for disaster prevention measures and resident education.