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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Fire Science and Engineering
Journal Basic Information
Journal DOI :
Korea Institute of Fire Science and Engineering
Editor in Chief :
Volume & Issues
Volume 19, Issue 4 - Dec 2005
Volume 19, Issue 3 - Sep 2005
Volume 19, Issue 2 - Jun 2005
Volume 19, Issue 1 - Mar 2005
Selecting the target year
Prediction of Minimum Oxygen Concentration(MOC) of Hydrocarbons and Halogenated Hydrocarbons
Ha Dong-Myeong ; Jeong Kee-Sin ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 1~7
An accurate knowledge of the minimum oxygen concentration(MOC) is important in developing appropriate prevention and control measures in industrial fire protection. In this study, by using the literature data and RSM(response surface methodology), the new equations for predicting the MOC are proposed. The A.A.P.E.(average absolute percent error) and the A.A.D.(average absolute deviation) of the reported and the calculated MOC for hydrocarbons were
, respectively and the correlation coefficient was 0.919. The A.A.P.E and the A.A.D of the reported and the calculated MOC for halogenated hydrocarbons and hydrocarbons were
, and the correlation coefficient was 0.938. The values calculated by the proposed equations were in good agreement with the literature data. Therefore, it is expected that this proposed equations will support the use of the research for other flammable substances.
Simulation of a Clean Room Fire I. Effects of Smoke Curtain
Park Woe-Chul ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 8~12
A fire in a clean room may cause a serious loss by spreading smoke particles. The effects of the width of smoke curtains on delay in smoke spread, which is located the work area boundaries, were investigated by using a computational fluid dynamics, for loss prevention by smoke spreading from one fire area to another. The fire scenario was set to a 1 MW methanol fire in a space of
floor and 4 m high. Distributions of temperature and smoke particles were compared for the width of the smoke curtains 0 (without smoke curtains), 1, 2, 3m. It was confirmed that a larger width of the smoke curtain delays spread of smoke more, and that making the work areas compartments is necessary to confine the smoke in the fire area.
Fire Drill on Virtual Reality Using GIS Technology
Lee Jae-Bok ; Kang Sang-Hyeok ; Chung Yeung-Jin ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 13~19
The vitual reality technology to assist fire activities has been developed using Geographic Information Systems (GIS). For this, the 3D-geographic information of Nagasaki city, Japan was constructed from tracing the aerial photograph and adding the height information of measured buildings including stairs. And also, with large multi-plane stereo presentation equipment called Immersible Projection Technology (IPT), and the 3D-digital map was presented in actual scale of town. As the result, the observer could obtain three-dimensional information in the various angles as if we can gain our experience at first hand, it will help to assist fire activities.
A Study on Evacuation of Patients in Hospital : Part I
Kim Eung-Sik ; Lee Jeong-Su ; Kim Myeong-Hun ; You Hee-Kwon ; Song Yong-Ho ; Min Kyung-Chan ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 20~28
The existing algorithms or programs of egress time estimations rule out the walking velocity of each single person. But this algorithm can not be applied to estimation of evacuation in a hospital, because most patients are handicapped or walking on various kinds of tools. This study measured the moving velocities of patients according to different types of physical handicap. Also evacuation drills in several hospitals were carried out to establish an algorithm for prediction of total egress time of wards. Besides these measurements awareness of staffs about safety was investigated with the questionnaire. The results of this study is divided into two serial papers.
Discharge and Fire Extinguishing Test of Inert Gas Clean Agent
Song Eun-Seok ; Kim Jae-Duck ; Park Yang-Won ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 29~36
We carried out discharge and fire extinguishing tests of new inert gas clean agent, which consists of
carbon dioxide, as an alternative of Halon that is banned by Montreal Protocol to protect the ozone layer of the earth. Discharge and fire extinguishing tests were performed in
rooms with piping which allows gaseous agent to transport from storage to test rooms. We confirmed that it took less than regulation time, 60 seconds for the discharge of over
initial charged amounts. Discharge test variables were piping length and orifice size. Fire extinguishing tests verified that this new inert gas clean agent is suitable for both n-Heptane fire and deep seated fire of wood crib.
A Study of the Characteristics of Flow and the Distribution of
Agent Concentration According to the Number of
Park Chan-Su ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 37~44
We have conducted a numerical simulation under three-dimensional unsteady conditions in order to analyze the characteristics of flow and the distribution of
agent concentration according to the number of
agent nozzle. The engine room of a ship was selected as a protection space, and flow fields and
concentration fields were measured. In case of increasing the number of
nozzle from 2 nozzles to 4 nozzles, the distribution of CO2 concentration showed low, and in case of increasing the number of
nozzle to above 6 nozzles, the recirculating flow affected to all region was generated. In case of increasing the number of
agent nozzle to above 4 nozzles, the iso-concentration line below 0.36 expanded or contracted slightly. Therefor, the proper number and the arrangement of
agent nozzle are considered when
fire fighting system is designed.
A Study on Civil and Criminal Liabilities of 119 Rescue and Its Legal Protection
Bae Hyun-A ; Yun Soon-Young ; Jung Koo-Young ; Lee Kyung-Whan ; Kim Chan-Woong ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 45~62
This thesis has defined the legal status of 119 rescue who plays a major role in the Korean prehospital emergency medical system and reviewed the various issues that may occur depending on work related legal liabilities. As a result, the purpose of this study was to represent the countermeasures for legal protection of 119 rescue required for the quality improvement of prehospital emergency medical system and as well as the countermeasures for risk management prepared for its related lawsuits. The legal liabilities of 119 rescue officers can be divided largely into public law liabilities and civil and criminal liabilities. In order to decrease the incidences of legal problems and provide the legal protection to rescue officers, the liability of supervising physician should be emphasized when the emergency medical practice is performed by a rescue officer under their supervision by consolidating medical control and the rescue officer should have legal liability on his emergency medical practice. itself Also, the emergency medical service guideline for 119 rescue officers should be prepared and their works should be performed according to such a guideline and procedures. In addition, the accurate legal documentation on emergency medical system from on-site to ER and related mobilization should be framed and preserved. Moreover, it is required to enact a new law such as the Good Samaritan Act or the Rescue Officers Protection Act.
The Arc Dispersion Properties by Switching of High Sensitivity Type RCD Contacts
Choi Chung-Seog ; Kim Dong-Woo ; Kim Young-Seok ; Lee Ki-Yeon ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 63~68
In this study, the arc dispersion properties were analyzed according to switching of high sensitive type Residual Current Protective Device(RCD) contacts. Arc dispersion and ignition process was taken by high speed imaging system(HSIS). In this experiment, electric lamps(60 W) and heaters(950 W) were connected in parallel as loads. In case of normal RCD, it took about 2.3(ms) from the generation of arc to the extinction of uc. When arc was dispersed in normal RCD, it did not ignite cotton. Whereas, in case of RCD deteriorated by NaCl solution, the range of arc dispersion was wider and the arc lasted for 3.3[ms] more compared to normal RCD. And the arc ignited cotton. In order to prevent accidents caused by RCD, we should be careful of environmental factors, such as dust and humidity, and the parts of RCD should be used as incombustible materials.
A Study of the Application of Inert Gas Generator to the Fire Extinguishing System
Han Yong-Shik ; Kim Myoung-Bae ; Kim Su-Yong ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 69~74
A study of the utilization of inert gas generator(IGG) that generates a large amount of inert gas for the fire extinguishing equipment was performed. In this study, the fire extinction performance of gas generated from a 1GG which is implemented to a gas turbine was investigated. A simulated mixture gas of which composition is the same as that of the gas generated from ICG was used in all experiments. First, the extinction concentration was measured using a cup burner method. The extinction design concentration and the volume of extinction space was calculated by applying the obtained extinction concentration to a method recommended by NFPA 2001. In practical respects, the fire extinction performance of IGG-generated gas was confirmed through the fire suppression experiment within a
A Study on the Characteristics of the Multilayer-Type PTC Thermistor for Fire Detection Sensor
Chu Soon-Nam ; Baek Dong-Hyun ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 75~80
This dissertation is about the development of PTC(Positive Temperature Coefficient) thermistor by composition method. A multilayer-type PTC samples were fabricated under optimal conditions after setting the experimental composition equation as
and their testing results were analyzed. The fabrication method of SMD(Surface Mounted Device) multilayer -type sample based on the composition ratio has the advantages in lowering its resistivity at room temperature, considerably, and increasing maximum current level, as needed. Although there is a disadvantage of peak resistivity drop by the multilayer, causing the increasement of thermal capacity. and thereby, increasing the switching delay time, a high applying voltage can increase the peak resistivity and shorten the switching delay time. The voltage-current characteristic showed that the more multilayers increased the initial maximum current and the transition voltage that increased the resistivity abruptly according to the curie point. The element it could be applied with the sensor for the fire detector.
The Problems of the Emergency Rescue and First-aid and the Plan of Improvement in Korea
Jung Gi-Sung ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 81~92
It is natural that The government should be responsibility for the fulfillment of obligation to prevent a notional life, accurate rescue and first-aid from various calamities. Although, The government policy is established a foundation that is reventing a national life and a property from the calamity with deciding of the fire line, that is not satisfied with taking precautions against a calamity. In case of the calamity there is always pointed the confrontation procedures, especially, In case of crisis The government is lacking to come to an developed country on account of system of the emergency rescue and first-aid. The prevention and provision are the most important thing with reference to a confrontation of the calamity. But calamity is happened without warning, so We should establish line of prompt rescue and first-aid lately that is very important thing. The First, We should get the single line of the rescue and first-aid through a integration and elimination in terms of a law of the emergency rescue and first-aid, but also we strengthen a line of a scene confrontation ability and speciality. To raise awareness of improving a rescue and ability of first-aid, through reinforcing the human and material equipment of The 119 rescue party to charge of emergency rescue and first-aid in effect.
The Actual Condition of the Arson and Countermeasure
Jung Gi-Sung ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 93~104
Nowadays, the arson is not common interest happening. the arson has been handled with a crime of violence along with murder, robbery and rape. because of being detrimental to the public clam. but the arson a has not been made award of a serious social problem. There is a rise in the control possibility according to a level of national concern. we have known that the last fire accident of the Deagu underground It took a heavy toll of lives and the property due to our no interest in arson. The government and regional self governing community have fully aware of the serious of the arson so that we can make arrangement for overall measures. The government should not only make up for legislation and systematize to correct a defect but also there is uniting the countermeasure system of the organs. The government establish particular research institution of the arson to consider a useful countermeasure. The investigation authorities should develop the investigation technique to arrest an arsonist. The relevant post strengthen the public relation to bring up a private organization of fire prevention in order to prevent the arson to try the government best.
A Study on Char Characteristics of Fire Retardant Treated Douglas Fir
Park Hyung-Ju ; Oh Kyu-Hyung ; Kim Eung-Sik ; Kim Hong ;
Fire Science and Engineering, volume 19, issue 2, 2005, Pages 105~110
We tested the char characteristics of fire retardant treated Douglas fir at each of five constant external irradiance levels
. A Cone heater was used to expose the wood specimens to the heat flux. The size of specimens is 100- by 100- by 50-mm and the kinds of specimens are non-treated wood(N) and treated wood(F2 and f4) by water soluble fire retardants. The water-soluble fire retardants were made from mixture of aqueous solutions of monoammonium phosphate, sodium borate and zinc borate, and those are used for immersion of Douglas fir. In result of test, char fraction of fire retardant treated Douglas fir showed a considerably low char fraction than it of non-treated wood irrespective of increase of external heat flux. And char fractions has low levels with increase of fire retardant content. Burning rate of non-treated wood(N) was showed a relatively high burning rate than it of fire retardant treated wood(F2 and F4). And difference of burning rate shown more rapidly in high external irradiance than low external irradiance. When the external heat flux is
, average char rate of non-treated wood is rapidly about twice than fire retardant treated wood. Water-soluble fire retardants mixed in this study find out it has fire suppression and adiabatic effect by char layer from results of char fraction, burning rate, and char depth and rate.