The goals of automatic fire detection equipment in Japan and South Korea are the detection in early fire stage, alarm and finding the location of the fire. Japan also has similar operation system and signal transmission method compared with South Korea. The standards of fire detection equipment in Japan are established their own standards. The automatic fire detection equipment in Korea has been developed with benchmarking the Japanese system in early 1950’s and follows the decree on the basis of Japan’s fire services. NFPA 72, which is automatic fire detection equipment in U.S.A. and verified through the experiment and test, expects to reflect to our automatic fire detection equipment after modification and supplement.
초가속수명시험(HALT:Highly Accelerated Life Test)은 온도변화와 진동을 통해 부품초기 고 장을 빠르게 찾아 개선함으로써 제품의 신뢰성을 향상시킨다. 이에 따라 기업들은 초가속수명시 험에 집중하게 되었고 장비의 수요와 가동률이 증가하고 있다. 그러나 초가속수명시험 장비는 대부분 해외 장비에 의존하고 있어 고장이 발생한 경우 유지보수에 대한 비용이 높고 보전까지 의 시간 또한 길다. 뿐만 아니라 장비에 대한 적절한 보전절차가 없어 비용과 시간의 손실이 발 생되는 실정이다. 본 논문에서는 국산화 개발중인 초가속수명시험 장비에 고장유형과 원인에 따른 계획보전 활 동을 진행 할 수 있도록, FMEA(Failure Modes and Effects Analysis)를 사용하여 계획보전절 차를 제시하였다.
엔진 시 운전 후 엔진 내부 주요 부품 상태를 검사하기 위해 분해하는 작업을 엔진 개방 작업 공정이라 하는데 엔진 개방 작업 공정 중 콘 로드 분해 시간이 평균 대당 187.8분으로 표준 시간 90분을 과도하게 초과하여 시급히 개선이 요구 되어 현상파 악, 원인분석, 대책수립 및 실시를 하여 개선 후 86.7 분으로 감소하여 생산성 향상으 로 인한 원가절감을 연간 4200만원 달성하였다.
Currently, the construction industry in Korea implements the risk assessment that is implemented by managers and working team leaders. However, it is difficult to share the result of risk assessment meeting to substructural workers in korea system and the workers don't understand meaning and effect about risk assessment. The risk assessment is that the workers in the construction site have to know risk factors and reducing ways to the risks. But, the education and sharing methods for risk assessment system is insufficient in korea. For this risk assessment problems identified were surveyed. In order to improve the problems of the risk assessment, proposes the following three methods. First, Implement to educate the risk assessment during the basic safety and health training of construction industry. Second, the training way about workers' participation in risk assessment is necessary. For example, after watching videos, etc, the workers create risk assessment in person and make a presentation about it. Third, the risk assessment utilize during TBM(Tool Box Meeting). Before working every day, we need to educate risk factors and the reducing ways to the risk during TBM.
This study highlights empirically the relationship among major constructs such as accident, fear and anxiety emotion, self-efficacy, and negative spillover of work, focused on the railway drivers. The differentiated factor of this study is in that the experience of accident was posed as exogenous variable. Hypothesis tests based on 201 samples verified that the experience of accidents showed a significant effect on negative spillover of work mediated by fear and anxiety, with moderating effect of self-efficacy between fear and anxiety and negative spillover of work. However, the moderating effect was shown as increasing the degree of negative spillover of work, since the drivers recognized their fear and anxiety accrued by accident experience as uncontrollable. This finding suggests the need for mitigating driver's negative emotion - fear and anxiety - through an introduction of practice such as exemption of settlement obligation in accident site and lowering of the penalty for accident responsibility.