• Journal of the Korean Society of Marine Environment & Safety
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• v.7 no.2
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• pp.105-121
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• 2001

After the Sea Prince oil spill accident in 1995, the korean government has taken a measure to establish an emergency response system and equip clean-up capacity against large spill, major contents of which are as follows: First, Korea Marine Pollution Response Corporation has been established as a non-government organization for recovery of spilled oil in order to improve private response capabilities. Second, clean-up equipments, such as large clean-up vessels and oil fences for the open sea operation has been expanded. Third, a national contingency plan on the large spill accidents has been established compliance with the provisions of Article 6 of the OPRC 1990. However, there exist some problems in the national response system, such as clearly roles definition between government and private agencies; propel amendment of the Marine Pollution Prevention Act to incorporate major contents of the OPRC 1990; and training and exercises of clean-up personnel. With the above problems in mind, this paper reviews the current issues on the national oil pollution response system and recommends policy-making to tackle to those problems.

• Journal of Electrical Engineering and Technology
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• v.9 no.6
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• pp.1967-1977
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• 2014

In this paper, for the development of a safe and reliable DC home appliance suitable for DC home power supply system, we classified a number of inherent problems with help of the comparative analysis of existing AC and new DC home appliance. Several new technical problems of DC home appliances are mainly linked to the DC transient state. Among them, this paper concentrates on start-up inrush current problem, uni-polarity problem, and heavy DC load control problem. And to address these problems, we herein present an implementation of robust safety circuits for DC home appliances. Specifically, we investigate several multi-circuit countermeasures and select the best among them through comparative evaluation, based on theoretical, simulational, and experimental results.

• Journal of the Korea Safety Management & Science
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• v.8 no.3
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• pp.143-157
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• 2006

The purpose of this thesis is to develop a heuristic algorithm evaluating the layout to maximize number of boxes when a single-box-type is packed into a container. Actually because three-dimensional problems are involved in NP-complete, much study has been focused on heuristic algorithms. The basic concept of this study is as follows. The problem is solved as palletizing problems with each side of the container respectively. By using the height of boxes, the problem is extended to a three-dimensional problem. Consequently, through this thesis, we can get good solution and the result is displayed by three-dimensional computer graphic.

• Journal of the Korea Safety Management & Science
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• v.12 no.3
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• pp.163-168
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• 2010

Recently, there are many problems of service qualities such as regular-rapid-safe -comfortable transport, that was traditionally advantages in urban railway transportations. These problems cause train delays that affects consecutive schedule, capacity, operation plans, and it is hard to prevent the propagation of delay and find the recovery solution. Because the urban transport demands is continuously increased and the railway service is also expanded, the railway operation company makes efforts to improve operation performance and efficiency for passengers. In this paper, we analyse the issues and problems existing in the major operation line of high-density urban railways, and suggest the development direction of intelligent operation technology to improve the urban railway service by minimizing the occurrence and propagation of delay. And the result of numerical case study is also presented.

• Journal of the Korean Society of Safety
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• v.18 no.2
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• pp.92-97
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• 2003

There are many and various problems due to a disease in the work. These problems result in serious social Problems such as individual and family Problem, economical loses of company. The objective of this study is to analyze the worker's consciousness and provide the precautionary measures far prevention of a disease in the work. Also, this paper presents quantitative value of priorities for prevention of a disease in the work using QFD technique. The samples for this study are chosen from the companies with less than 300 employees under charge of the Kangnung Ministry of Labor during three months (2002. 3. 2 - 2002. 5. 31).

• 대한예방의학회:학술대회논문집
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• 1993.10a
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• pp.211-212
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• 1993

• Journal of the Korean Society of Safety
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• v.21 no.5 s.77
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• pp.72-76
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• 2006

This study deals with problems of technical assistance through accidents analysis and questionnaires on small-sized construction sites which are difficult to understand real condition and administrate legally and indicated following efficient methods of technical assistance. (1) Ensuring access to the small-sized construction sites. (2) Delegation technical assistance service to civilian and supporting selected. (3) Raising of the person's safe consciousness concerned with the small-sized construction sites. (4) Safety consulting for the head office of small-sized construction sites.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2013.11a
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• pp.228-229
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• 2013

As the rapid and various changing of social aspects, the structures are getting bigger, higher and more complex. This study is research trend of fire safety in high-rise buildings to Asia country. Research Trend for the Fire Safety to present the plan to clean up the problems and ways to improve future domestic.

• Journal of Korean Society of societal Security
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• v.2 no.2
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• pp.55-61
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• 2009

The statistics of disaster and safety control which have been produced by NEMA(National Emergency Management Agency) and other related agencies have some problems which show redundancies and the lack of connections. These problems can result in disbelief of disaster-management related policies and cause uncertainties on standardization. One of the main problems is caused by the lack of an integrated system that can coordinate available statistical resources. The objectives of this paper are to propose possible ways for the rearrangement of statistics categories, the improvement of statistics indicators and the integration of statistics of disaster and safety management based on the improvement of related laws and regulations. Through the integrated system for an efficient production of disaster and safety-related statistics, it will be possible to establish more accredited disaster-management policies based on the scientific statistics and international standard.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.7
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• pp.593-599
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• 2021

The demand for e-VTOL aircraft is expected to be increased rapidly in the future as a means of urban transportation due to operating cost reduction, eco-friendliness and convenience of vertical take-off and landing using pilot-aids automation system. However, there are many technical hurdles to be solved in securing safety and certification which are essential for commercialization and urban operation. So far, there is no e-VTOL aircraft that has received type certificate and standard airworthiness certificate due to the technical problems and safety requirement differences with conventional aircraft. The e-VTOL aircraft certification should also meet the equivalent level of safety required by the current airworthiness standards, but there are existing problems in securing safety and meeting current standards. In this study, the e-VTOL's certification problems and technical limitations in satisfying the current standards are presented.