PURPOSES : Carbon dioxide (CO2) is a cheaper and easier to installer fire suppressant than other extinguishing gases and is easy to install, but extinguishes fires by is suffocation. As a result, suffocation accidents continue to occur in facilities equipped with CO2 fire-extinguishing facilities, Emission standards have yet to be established. This study aims to address the issue. METHODS : To effectively remove CO2 emitted from installed systems, we reviewed and analyzed previous related research and existing international standards. RESULTS : In protected areas where CO2 fire-extinguishing systems are installed, emission facilities should discharge the emitted CO2 before it enters the protected spaces. CO2 sensors can determine whether safe entry is possible or whether respirators are required. CONCLUSIONS : This study presented a specific installation method for emission facilities capable of actively discharging CO2. Applying this method is expected to contribute to improving safety in facilities equipped with CO2 fire-extinguishing facilities.

High rising of the buildings offers a number of risk factors than ever before with regard to fire prevention. Especially in the construction site of high-rise buildings, people waste golden-time during the evacuation because temporary fire fighting facilities are not installed and transferred to a large fire because of fire suppression failure. In this study, the researcher derives the problems of fire protection in high-rise buildings construction sites and proposed the measures in such the legal aspects as fireᆞ building construction code and etc. There are the legal improvements such as orders of construction suspension in the problems of fire safety, appointing fire safety manager, temporary fire protection installation standards, enhancing penalty provisions regarding the use of fire, operating self fire brigade, confirming on-site after completing fire-protection facalities, establishment or strengthening special fire-protection investigations

Industrial disaster caused the deaths of 2,114, construction workers among them was the highest of 621 deaths. In the construction industry, has established a number of safety alternatives to prevent accidents. But until now, the cause of the accident has stopped being superficial analysis, awareness on the root cause of the acciden did not reflect. In this study, we analyze the characteristics and causes in G contractors' safety accidents. And innovation strategy, organization-wide safety management system and detailed tasks to derive essentially was to prevent the occurrence of large construction companies. A lot of business for accident prevention effect was transient and formal, to reflect a management style and organizational culture, and try to prevent construction accidents. we will strive to prevent the disaster from the construction site through the improvement of these.

As of Dec. 31, 2011, the number of nation's escalators accounts for 24,248 units, 5.4% of total elevators in our country, safety accidents take up as many 539 case, 55.2% of total elevators' safety accidents. Escalator safety accidents show high incident ratio of primary safety accidents breaking out by users' careless and abnormal use type, taking up multi-caused accident, which mainly take place from vulnerable age groups such as children under 13, and elders above 65. The Government will have to devote itself for policy and support for the establishment of safety management system fit for current state, the revitalization of preventive education for safety accident, the enhancement of safety awareness to escalators' users in order to secure escalator safety environment on an international level and support domestic industrial development.

There are something unreasonable, unsatisfactory on the law system for laboratorial safety enforced by the government from April 2006. Therefore, the system should be reviewed and revised to be satisfactory for current research condition. This study is to analyze research areas for improving laboratorial safety and to show safer ideas. With more detail, more practically improving ideas have been shown for systemizing safety assessment in advance, effective organization of laboratory, safety committee and their regulation. It is expected that better safety level all the concerned engagement, reasonable revision of safety regulation of laboratory, can be made by this research result.

비탈면 붕괴의 한 요소로 동절기 및 해빙기 과정에서 동결-융해에 따른 풍화, 수축-팽창 등의 영향으로 비탈면 안정성에 영향을 미치는 것으로 알려져 있으며, 실제 국내외에서 해빙기 시기에 비탈면 붕괴사고가 빈번히 발생하고 있다. 본 연구에서는 해빙기 비탈면의 안전 확보를 위하여 해빙기 비탈면 유지관리 방안을 제시하였다. 외관조사 및 자료조사를 통한 상세 점검을 바탕으로 고도화된 위험성 평가 여부를 결정하고, 위험성 평가에서도 위험성이 높다고 판단되는 경우, 전기비저항 등을 통해 위험단면을 선정하여 실시간 모니터링을 경제적으로 실시할 수 있도록 유지관리 프로세스를 계획하였다.

The number of expressway structure management is continuously increasing, and the aging of structures is proceeding rapidly. In order to secure the safety of expressway structures, we propose improvement methods such as advancement of structure management system, lifetime improvement methods such as prevention of structure deterioration, and the preemptive reflection of the structure maintenance budget.

It is required development on the work process of the legal system, quality management and safety management for safety securement of construction. Therefore, this study examines the status and issues surrounding the current legal systems and proposes improvements of material for safety securement of construction.

It is required development on the work process of the legal system, quality and safety management for safety securement of small sized buildings. Therefore, this is suggested the improvement on the quality and safety management for safety securement of small sized buildings.