• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2007.04a
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• pp.270-276
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• 2007

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2009.04a
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• pp.218-228
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• 2009

The basic law about disaster and safety management and the fire fighting law state that the central government and the local governments are responsible for protecting the life and assets of the people. The well-fare developed nations have developed and are implementing diverse safety programs with making safe cities as their prime objective. Our nation has not yet practiced such actions. However, it is in demand to evaluate what safety policies are practiced by local governments for the people and to inform the people of those. Therefore, this research developed and suggests the assessment criteria and the assessment method to evaluate the safety level of a city by assessing the safety of buildings and facilities.

• Steel and Composite Structures
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• v.35 no.2
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• pp.199-213
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• 2020

This paper proposes a Global-Local Analysis Method (GLAM) to assess the progressive collapse of steel framed structures under fire-induced column failure. GLAM obtains the overall structural response by combining dynamic analysis of the heated column (local) with static analysis of the overall structure (global). Test results of two steel frames which explicitly consider the dynamic effect during fire-induced column failure were employed to validate the proposed GLAM. Results show that GLAM gives reasonable predictions to the test frames in terms of both whether to collapse and the displacement verse temperature curves. Besides, several case studies of a two-dimensional (2D) steel frame and a three-dimensional (3D) steel frame with concrete slabs were conducted by using GLAM. Results show that GLAM gives the same collapse predictions to the studied cases with nonlinear dynamic analysis of the whole structure model. Compared with nonlinear dynamic analysis of the whole structure model, GLAM saves approximately 70% and 99% CPU time for the cases of 2D and 3D steel frame, respectively. Results also show that the load level of a structure has notable effects on the restraint condition of a heated column in the structure.

• Fire Science and Engineering
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• v.23 no.4
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• pp.59-66
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• 2009

This research aims to conduct a pilot study for the in-fire performance of headed studs, commonly used in composite structures over the world. The robustness of the shear studs in fire appears to be a key element to govern the composite behaviour after a sudden local instability developed in structures such as trusses and cellular beams. In order to experimentally evaluate the residual strength of studs in fire, the standard push-out test was modified for a half of the original set-up to be equipped with a furnace. The adjustments allow the steel section to have a 3-sided exposure against fire. Under the Standard ISO fire, the modified push-out tests under loading were conducted to identify the failure mechanism of the studs in relation to temperature developments.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.478-481
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• 2011

This study is intended to evaluate and optimize the characteristics of smoke spreading and the appropriateness of evacuation time extended by operation of smoke control system during fire within the underground space of the building structured in compliance with the smoke control system performance criteria from the local fire safety standard, which has been currently applied to the buildings in Korea. Using the heat release per unit weight of the combustibles, a numerical analysis both in case of smoke control system in operation and the system not in operation was carried out at the several different shopping malls. From the viewpoint of securing the evacuation time, the results were compared in an attempt to assess the appropriateness of the fire safety criteria.

• Fire Science and Engineering
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• v.26 no.4
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• pp.55-62
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• 2012

The suppression mechanisms of carbon dioxide ($CO_2$) as a representative fire suppression agent were revisited using a counterflow diffusion flame which could be applied the concept of a local application system. To end this, the low strain rate $CH_4$/air counterflow diffusions with $CO_2$ addition in either fuel or oxidizer stream were examined numerically using detailed-kinetic chemistry. Radiative heat loss due to radiating gas species including $CO_2$ added was considered by the optically thin model (OTM). As a result, the critical $CO_2$ volume fractions in the oxidizer stream required to extinguish the flame were in good agreement with the experimental data reported in the literature, while somewhat under-prediction was observed with $CO_2$ added in the fuel stream. The surrogate agents were adopted to estimate the quantitative contribution with changing in global strain rate ($a_g$) on the flame extinguishment among pure dilution effect, thermal effects including radiation heat loss and chemical effect due to the $CO_2$ fire suppression agent.

• Fire Science and Engineering
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• v.25 no.2
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• pp.60-70
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• 2011

Due to the city concentrated symptoms, high-rise building symptoms and diversity, the scale of fire disaster is increasing. So the economic expectation of fire disaster industry is growing. The domestic fire industry has an inadequate system, and hasn't a methodical system to foster the industry. And also most of the fire industry company are small and poor scale. So they haven't enough infrastructure like technical skill, manpower, marketing and so on. In order to drive fire industry from local fire protection industry to knowledge service, in this study, the items of human resources fostering, infrastructure and R&D were set and analyzed as detailed growth analysis factors. Also, the improvement plans were suggested and compared with IT industry which is defined as core industry in the 21st century knowledge-based economy in Korea.

• Journal of Sport and Applied Science
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• v.5 no.1
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• pp.11-15
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• 2021

Purpose: Swimming industry is improving faster than the other types of sport industries and populations of participating swimming are promptly increasing. Lack of recognition of fire safety in swimming facilities is issues related-studies has only recently begun to pay attention. This study is to review and extract fire safety factors for managing swimming pool. Research design, data, and methodology: The study reviewed related-ordinances, governmental documents, and studies discussing safety management of sport facility. Given the literature review, the study produced an initial construct presenting items and factors including fire safety elements and experts' review were conducted to ensure conceptual validity. Finally, the study generated the final factors and subitems representing fire safety elements for swimming pool management. Results: The study confirms factors and elements as follows: the study identifies fire safety equipments as first factors presenting fire extinguisher' place, its proper run, check list and so forth, Second factor is warning system including fire warning equipment, its proper operation, sprinkler and its proper operation, switch and lamp of emergency panel and their proper run and so on. Third factor is evacuation system including a fire exit, exit sign, broadcasting equipment, and their proper operation, and so on. The other factors are an electronic equipment and its subelements, gas management including safety management of LPG, gas valve, pipe, and fire prevention facility including a fire door and its proper operating. Conclusions: Regarding safety management of swimming pool, further discussions and implications were made, and future directions for related-studies were discussed.

• Fire Science and Engineering
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• v.27 no.4
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• pp.47-55
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• 2013

The importance of fire safety services has increased expanding its services into prevention of danger and the reinforcement of safety services. The purpose of this study is to suggest a way for effective safety service by surveying fire fighters and residents of Gyeonggi Province and examining theories of safety services and actual status of 119 safety units. This study suggests the use of social capital by local community, establishment of cooperation between organizations, supports by citizens, cooperative activities by organizations, difference between emergency report and non emergency report and social safety net role of safety fire services.

• Fire Science and Engineering
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• v.20 no.4 s.64
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• pp.116-124
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• 2006

Multiplex movie cinemas are cultural spaces where an indefinite number of people from a variety of classes and ages can enjoy movies, food, and leisure all together in one place at the same time. Those facilities which a great number of people use together like multiplex movie theaters are relatively vulnerable to fire safety, compared with other facilities to protect from fire. Considering the special nature and vulnerability of multiplex movie theaters from a fire safety standpoint, this study aims to seek measures to acquire fire safety performance of the specific facilities by selecting exemplary models of local multiplex movie theaters, performing fire and evacuation simulations for them, and reviewing and analyzing their present problems in evacuation safety as well as the relevant regulations of many countries.