• Journal of the Korean Society of Safety
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• v.31 no.2
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• pp.76-82
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• 2016

A 2-D hydrodynamic model for predicting the movement of debris flow was developed. The developed model was validated against a dam break flow problem conducted in EU CADAM project, and the performance of the model was shown to be satisfactory. In order to suggest structural alternative for hazardous zone vulnerable to debris flow disaster, two types of initial mass distribution and two shapes of defensive structure were considered. It was found that 1) the collapse of debris mass initiated with square pyramid shape induced more damage compared with that of cubic shape; and 2) a defensive structure with semi-circular shape was vulnerable to debris flow disaster in terms of debris control or primary defense compared with that of rectangular-shaped structure.

• Journal of the Korean Institute of Rural Architecture
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• v.9 no.3
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• pp.33-45
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• 2007

Recently, large scale disasters have been occurred in rural areas. Most people suffering from the disaster live in the temporary containers. These could not provide the fundamental occupancy performances such as thermal insulation, ventilation and heating system. It is very important to rebuild the residence for sufferers quickly and safely. Because modular building system has some advantages such as short construction time, mobility, light-weight structure, modularity, flexibility and economical efficiency, it is expected that it could be easily applied to the disaster restoration. So, this research aims at developing the design model of modular building system for disaster restorations in fishing and agrarian villages. For this purpose, current counterplan for restoration was firstly investigated. Also the basic guideline was established through the investigation of current status of residence in fishing and agrarian villages. Finally, 2 types of design model such as single story residence and temporary accommodation facility were proposed. We could see that we could make the flexible building plan when applying the modular building system to the temporary housing for the sufferers.

• Journal of the Korea Safety Management & Science
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• v.13 no.1
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• pp.41-49
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• 2011

The automatic fire detection system is an important facility installed with focusing on minimizing the damage from a fire. This paper presents in the followings as the methods to reduce the false alarm of the automatic fire detection system; first, to prepare for legal standard so that revised legal standard can be applied to the fire fighting property prior to revision; second, to introduce the performance based fire detection protection design in the law based fire protection design; third, to maintain the wiring of worn-out detector; forth, to introduce an evaluation system to the education for the fire warden; fifth, to extend the standard of MTBF(meantime between failure) of the detector; sixth, to extend of installing the analog type detector; seventh, to improve the structure of reset switch.

• Korean Journal of Construction Engineering and Management
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• v.7 no.3 s.31
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• pp.56-64
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• 2006

The current disaster management manual is being utilized as a book or document-based type. It causes a low applicability and interoperability in practical business because each information has a different document format and it is difficult to recycle those information as common disaster information. The information reading by text type without electronic data and visual object also has a limitations in guaranteeing a quickness of disaster management business. Accordingly, the electronic document management system with visual information is necessary and the system needs to tie framed by XML schema because the electronic document standard will be changed from DTD to XML schema. This study attempts to develop a procedural methodology of an electronic document management system based on XML for disaster management. The applicability of the proposed results is verified by the simulated scenario.

• Journal of the Korean Society of Hazard Mitigation
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• v.1 no.2 s.2
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• pp.123-137
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• 2001

Based on basic characteristics of urban disasters and their data availabilities in Korea, this study provides risk assessment models which are derived from Cheongju examples. In specific, the application models are confined to fire, facility and escape risk survey results in the paper. For the assessment criteria, major independent variables for the categories of fire include both the frequency levels and the amount of damage. And the degree of facility risk assessment is heavily hinged on both the weighted values of key facilities and their weighted rank-sizes. In the same context, the degree of escape risk assessment is hinged on both the weighted values and the amount of the classification of land. From the empirical configuration, this paper presents that the potential figure of fire risk is relatively higher in the built-up areas within the existing Central Business District where accommodates a number of dilapidated housing units and community-supportive facilities. In contrast, the potential figure of facility and escape risk is higher in both old residential areas and the newly-built apartment complex. In short, the CBD and its neighboring residential areas record a high potential figure in terms of total risk, juxtaposing fire, facility and escape risk all together.

• Journal of the Korean Society of Radiology
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• v.16 no.6
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• pp.741-749
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• 2022

Radiography-Testing that verify the quality of welding structures without destruction are overwhelmingly used in industries, but many safety precautions are required as radiation is used. The workers for Radiography-Testing perform the inspection by moving the Iridium-192 radiation source embedded in the transport container of the gamma-ray irradiator within or outside the facility. The general facility is completely blocked about radiation from the outside with thick concrete, but if it is difficult for worker to handle object of inspection, facilities ceiling can be opened. A general facility may be constructed using a theoretical dose evaluation method because all exterior facilities are blocked, but if the ceiling is open, it is not appropriate to evaluate radiation safety with a simple theoretical calculation method due to the skyshine effect. Therefore, in this study, the radiation safety of the facility was evaluated in the actual field through an ion chamber survey-meter and an accumulated dose-meter called as OSLD, and the actual evaluation environment was modeled and evaluated using the Monte Carlo simulation code as FLUKA. According to the direction of the irradiation, the radiation dose at the facility boundary was difficult to meet the standards set by the regulatory authority, and radiation safety could be secured through additional methods. In addition, it was confirmed that the simulation results using the Iridium-192 source were valid evaluation with the actual measured results.

• Journal of the Society of Disaster Information
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• v.20 no.1
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• pp.177-191
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• 2024

Purpose: In this study, the Drenzer facility, which is a facility installed to prevent the spread of fire caused by fire in adjacent buildings in the fire prevention zone, was analyzed legally and technically. We confirmed the uncertainty of the Building Act and the Fire Protection Act, and suggested the revision of the necessary standards. Method: Although the Drenzer facility is a building facility, it is actually applied in the field of firefighting, so the Delphi analysis was conducted on a panel composed of architectural experts and firefighting experts in the first, second, and third rounds to find the issuses and important facility component elements. Finally, the IPA(Importance-Performance Analysis) analysis was conducted to identify the importance of the elements that need to be revised. Result: Delphi analysis was carried out for experts on various components of Drenzer equipment in the first, second, and third rounds, and it was found that the survey items of the head, detector, and other facilities of the Drenzer equipment are valid items to identify problems. The IPA analysis indicated that the revision of the standards for Drencher head was necessary as a priority. Conclusion: In this study, it was possible to confirm the opinions of experts through Delphi analysis on the legal and technical problems of Drencher facilities, and it was confirmed that among the components of the Drencher facility, the revision of the head-related regulations is required as a priority.

• Journal of The Korean Society of Agricultural Engineers
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• v.62 no.1
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• pp.117-126
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• 2020

The area of facility horticulture in Korea is increasing rapidly, the single-span pipe house which uses galvanized steel pipe as the main rafters occupies 78.7% of the facility area. Lightweight structures such as the single-span pipe house are vulnerable to meteorological disasters such as strong winds, economic losses of the state, local governments and farmers are continuing as construction does not meet the design standards. In order to minimize economic losses in the horticultural specialty facilities sector, the Rural Development Administration has been operating the horticultural disaster resilient standard for horticultural specialty facilities since April 2007. The only standard for the pipe connector is the disaster resilient standard, there is no standard for the uplift capacity of the house pipe foundation and the research on it is also insufficient. The purpose of this study is to investigate the characteristics of uplift capacity according to the foundation type, compaction ratio and embedded depth through soil box test. The results of the maximum uplift capacity according to the type, compaction ratio and embedded depth can be used as the basic data for the basic design of the pipe house conforming to the disaster resilient standard. Due to the limitation of soil box test, it may be different from the behavior of pipe house installed on site. In the future, the field test and the actual pipe house should be made and supplemented by comparing this result with the field test values.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.2
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• pp.259-266
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• 2023

Global climate change is increasing, and the damage and scale of localized torrential rains are increasing. Pre-flood analysis simulation results should be derived from rainfall data through rainfall forecasts to prevent flood damage. In addition, it is necessary to control the use and management of flood response disaster prevention facilities through immediate decision-making. However, methods using spills and flood models such as XPSWMM and GATE2018 are limited due to professional usability and complex analytical procedures. Prototype (flood disaster prevention facility simulator) of this study is developed by calculating rainfall (short-term and long-term) using CBD software development methods. It is also expected to construct administrator and user-centric interfaces and provide GIS and visible data (graphs, charts, etc.).

• Journal of the Society of Disaster Information
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• v.9 no.3
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• pp.290-299
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• 2013

This study is to present an improvement of security for the National Assembly by survey of persons who use the National Assembly facilities. Most of respondent said that their security consciousness level is above average, and they know National Assembly building is National Major Facility First class but they did not know well what the Major Facility First class is. Many of respondents thought security design of National Assembly building is inadequate, so reinforcement of access control management is necessary. For reinforcement of access control management, security gate and preparing of some obstacles are required. They said that they could put up with inconveniences incurred as a result of reinforcement of access control management, that could be affected positively for the reinforcement. The recognition on the necessity of security education is high, but there is no proper security education program. For practical security education, contents and different method followed by different facilities user should be considered.