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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Fire Science and Engineering
Journal Basic Information
Journal DOI :
Korea Institute of Fire Science and Engineering
Editor in Chief :
Volume & Issues
Volume 26, Issue 6 - Dec 2012
Volume 26, Issue 5 - Oct 2012
Volume 26, Issue 4 - Aug 2012
Volume 26, Issue 3 - Jun 2012
Volume 26, Issue 2 - Apr 2012
Volume 26, Issue 1 - Feb 2012
Selecting the target year
A Study on Fire Extinguishing Performance of Closed Type Water Mist Nozzles for Ship's Accommodation
Kwark, Ji-Hyun ; Kim, Young-Han ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 1~9
DOI : 10.7731/KIFSE.2012.26.1.001
Since accommodation, public space and service areas where people stay for all day occupy about 70% of a huge cruise ship, they have to be protected from the fire. International Maritime Organization has resolved that a water mist system should be equipped in this cruise ship according to SOLAS II-2 Reg. 10.6 and FSS code Ch. 7. The water mist system consists of mist nozzles, pressure vessels, section valves and pump unit etc. In particular, the water mist nozzles should be recognized by fire tests in accordance with IMO Res. MSC 265(84). In this study, the fire tests for cabin, corridor, public space and storage area have been conducted to develop the water mist nozzles appropriate to the regulation. Totally 5 types of nozzles were developed and have satisfied the whole performance requirements.
Cable Functional Failure Temperature Evaluation of Cable Exposed to the Fire of Nuclear Power Plant
Lim, Hyuk-Soon ; Bae, Yeon-Kyoung ; Chi, Moon-Goo ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 10~15
DOI : 10.7731/KIFSE.2012.26.1.010
The fire event occurred in fire proof zone often causes serious electrical problems such as shorts, ground faults, or open circuits in nuclear power plants. These would be directed to the loss of safe shutdown capabilities performed by safety related systems and equipments. The fire event can treat the basic design principle that safety systems should keep their functions with redundancy and independency. In case of a cable fire, operators can not perform their mission properly and can misjudge the situation because of spurious operation, wrong indication or instrument. These would deteriorate the plant capabilities of safety shutdown and make disastrous conditions. In this paper, investigation and cause analysis of cable fire in Nuclear Power Plant, we described the cable fire temperature and functional failure criteria and the cable functional failure temperature evaluation by exposed fire is studied.
Calculation of Uncertainty in Measuring Heat Release Rate in Room Corner Test
Noh, Kwang-Chul ; Kim, Chi-Hoon ; Lee, Seung-Chul ; Lee, Duck-Hee ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 16~22
DOI : 10.7731/KIFSE.2012.26.1.016
In fire test, accurate heat release rate measurements provide important information to define the fire safety characteristics of products. The calculation of heat release rate depends on the errors of measuring parameters in experimental set-up. In this study, the uncertainty factors of heat release rate in the room corner test facility, which is installed at Korea Railroad Research Institute, were analyzed. Through the fire testings for the KTX interior materials, the uncertainties of heat release rate were calculated. Results showed that uncertainty was high in the initial stage of fire test and gradually decreased with the growth of fire. The oxygen concentration was a major factor contributing to the combined relative standard uncertainty.
An Experimental Study on the Fire Resistance behaviour of Asymmetric Slimfloor Beam According to Cross Section Shape Variation
Kim, Hyung-Jun ; Kim, Heung-Youl ; Lee, Jae-Sung ; Kwon, Ki-Hyuck ; Yeo, In-Hwan ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 23~30
DOI : 10.7731/KIFSE.2012.26.1.023
The temperature development of a structural element is dependent on section factor, which is estimated as a ratio of the fire-exposed perimeter to the cross-section area. Hence, with the higher section factor, the faster temperature development of the section os observed. Composite beam member, partially embedded asymmetry H beam, has a good fire resistance to the cross-section. The study was intended to conduct with change with section factor. The experimental result of section type which the Slim Beam Floor is bottom flange reinforced method.
A Numerical Analysis for Fire Spread Mechanism of Residential Building Fire
Ahn, Chan-Sol ; Kim, Heung-Youl ; You, Yong-Ho ; Kim, Hyung-Jun ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 31~37
DOI : 10.7731/KIFSE.2012.26.1.031
This study is intended to present a computational thermal model for a residential building. As the Performance Based Design is more popular, fire-intensity and fire-load have turned out to be very important factors for building design and can be predicted through some computational work. To predict and estimate the fire properties of a residential fire, we made some numerical models of combustibles and residential building. In a bid to validate the estimate values, computational analysis results from numerical models were compared with real fire tests. For computational analysis, the Fire Dynamics Simulator (FDS) was used with Large Eddy Simulation (LES) model for turbulence. Consequently, fire-intensity was well predicted and flash-over of rooms were successfully estimated.
A Study on the Safety Management of the Petrochemical Complex Area
Kim, Kug-Rae ; Hwang, Sae-Yeon ; Kim, Bong-Hoon ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 38~42
DOI : 10.7731/KIFSE.2012.26.1.038
Major industrial accidents such as fires, explosions and toxic releases have occurred in Ulsan, Yeosu petrochemical complex area every year. In this study, we analyzed the causes of the previous major accidents in order to provide reasonable measures for safety regulations and process safety management. Consequently, It is necessary to make constant revisions of safety regulations and to improve process safety management in other to prevent major industrial accidents in the petrochemical complex areas.
An Experimental Study on the Estimation for the Flow Coefficient of Elevator Hoistway
Kim, Hak-Joong ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 43~48
DOI : 10.7731/KIFSE.2012.26.1.043
Recently, evacuation safety of building resident become the major concern, as the building has been higher and more complicated. Required evacuation time using stairway is longer in high-rise buildings, moreover it is impossible for the disabled to evacuate by using stairway. For this reason the study on the effectiveness of using elevator for evacuation is progressing. This study shows the flow coefficient of hoistway when elevator is moving. The results of this study can be used for the study of elevator piston effect as basic data. Experiments were performed in 5 different hoistways at 3-story and 2-story buildings. According to the result of flow coefficient experiments, average flow coefficient is 0.954. Considering the
to guarantee 99.99 % reliance, it is 0.86. This result is 3.6 % bigger than 0.83 that Klote and Tamura suggested. It represents that the maximum critical pressure is decreased about 7 % on the same condition of elevator and elevator shaft. When the smoke control performance of high-rise building is evaluated, the result is significant economically by applying a more realistic and less value of elevator piston effect.
Comparison of Surface Fuel and Soil Layer Moisture after Rainfall in Broad-Leaved Forest at Young Dong Region
Kwon, Chun-Geun ; Lee, Si-Young ; Lee, Hae-Pyeong ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 49~60
DOI : 10.7731/KIFSE.2012.26.1.049
The change in fuel moisture in accordance with the number of days after rainfall is an important factor in predicting forest fire dangers and supporting forest fire rangers. Therefore, in order to clear up these forest fire occurrence conditions, forest fire danger levels for surface fuel 0.6 cm or lower, 0.6~3.0 cm, 3.0~6.0 cm, and 6.0 cm or above by fallen leaves layer, humus layer, soil layer, and diameter after rainfall of 5.0 mm and higher in accordance with tree density in 2008, 2009 Spring/Autumn Young Dong region have been analyzed. Research showed an approximate 17 % fuel moisture which is a dangerous forest fire occurrence level after 5 days from rainfall in medium-density areas and 3 days after rainfall in loose-density areas of Spring time in the fallen leaves layer. On the other hand, the humus layer showed a 40 % or higher fuel humidity even after 6 days from rainfall regardless of the season, while the upper and lower parts of the soil layer had a little change. In loose-density areas with 0.6 cm or less surface fuel per diameter in Spring time, the fuel humidity displayed a dangerous level in fire forest occurrence after 3 days, and 4days in medium-density areas, and for loose-density areas with 0.6~3.0 cm surface fuel per diameter in Autumn time it showed a dangerous level in forest fire occurrence after 3 days, and for medium-density areas, 5 days. In the case of 3.0~6.0 cm of fuel moisture per diameter in both Spring and Autumn times, even after 6 days, low and medium-density areas showed that they maintain fuel moisture and therefore the dangers of forest fires were very low, and in the case of 6.0 cm or higher, it showed 25 % or higher fuel moisture even after 6 days from rainfall regardless of the season.
A Study on Device Development for Electrical Fire Protection on Open Phase of Three-Phase Motor
Choi, Shin-Hyeong ; Kwak, Dong-Kurl ; Kim, Jin-Hwan ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 61~67
DOI : 10.7731/KIFSE.2012.26.1.061
In the three-phase power system using the three-phase motor, when any one-phase is open-phase, the unbalanced current flows and the single-phase power supplied by power supply produces overcurrent to motor coil. As a result, the enormous damage and electrical fire can be given to the power system. Recently, the thermal over-current relay (THR) or electronic motor protection relay (EMPR) is mostly used as the open-phase detection device of the three-phase motor. When the over-current or overheat of electric line is generated, it detects and operates circuit breaker, but there is the defect that the sensing speed is slow, the operation can be sometimes failed, and the precision is decreased. In order to improve these problems, this paper is proposed a new control circuit topology for openphase protection using semiconductor devices. Therefore, the proposed open-phase protection device (OPPD) enhances the sensing speed and precision, and has the advantage of simple fitting in the three-phase motor control panel in the field, as it manufactures into small size and light weight. As a result, the proposed OPPD protects the three-phase motor, minimizes the electrical fire from openphase, and contributes for the stable driving of the power system. The performance and confidence of the proposed OPPD is confirmed by a great variety of the experiments of operation characteristic.
A Study on Performance-Based Design Enforcement
Lee, Yang-Ju ; Ko, Kyoung-Chan ; Park, Woe-Chul ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 68~73
DOI : 10.7731/KIFSE.2012.26.1.068
Performance-based design (PBD) for large scale high rise buildings has been enforced to secure fire and evacuation safety since July 1, 2011. As various types of trial and error were expected in the early stage, to suggest solutions to the problems that might be followed by the enforcement, the regulations on PBD were reviewed and a questionnaire survey to fire protection specialists was carried out. It was confirmed that PBD is required for large scale apartment buildings, and specific and detail criteria for PBD methodology and evaluations, education for PBD to personnel who design and evaluate are also in need.
Development of the Low Power Stand-Alone Smoke and Heat Detector for the Reliability Improvement
Jee, Seung-Wook ; Kim, Si-Kuk ; Lee, Jae-Jin ; Kim, Pil-Young ; Lee, Chun-Ha ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 74~79
DOI : 10.7731/KIFSE.2012.26.1.074
This study is described for development of the stand-alone smoke and heat detector (SASHD) according to the revised in 2011 type approval and performance inspection code for detector. The main improvement of the revised regulation is source. CMOS microcontroller with nano watt technology is use for development of the workable SASHD over 10 years. The low-power SASHD is developed by using the power-saving sleep mode of microcontroller, by making the low-power source voltage checker, heat detector and smoke detector. The stand-alone detector is developed by smoke and heat detector type for reduce false fire alarm. User can choose type of work between the heat detection mode and smoke & heat detection mode. The SASHD can communicate with each them using RS-485 communication supported from microcontroller. So, this study can develop the SASHD that is able to alarm more wide area when fire occurs and reduce a flash fire alarm.
An Experimental Study on The Fire Resistance Performance of Steel Encased Reinforcement Concrete and Steel Framed Mortar Beam with Loading Condition
Kim, Hyung-Jun ; Kim, Heung-Youl ; Yeo, In-Hwan ; Kwon, Ki-Hyuck ; Kwon, In-Kyu ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 80~88
DOI : 10.7731/KIFSE.2012.26.1.080
This study evaluates the fire resisting capacity of the beam of the legal fire resistance construction, which establishes the Article 3 of the Regulations on Escape and Fire Resistance of Buildings. There are a total of five structures that we consider as legal fire resistance constructions, however, this study has a primary target of the reinforced concrete beam, and tests the fire-resistant performance depend on the covering depth of reinforce concrete. The results showed that it meets the three hours, the maximum statutory fire resistance time, if it was a load ratio of 0.5 and covering depth of 40 cm. Steel framed mortar beam is legal fire resistance structure that it was possessed three hours fire resistance performance, if it was a load ratio of 0.4 and covering depth of 60 mm.
Combustion Characteristics and Thermal Properties for Wood Flour-High Density Polyethylene Composites
Shin, Baeg-Woo ; Chung, Kook-Sam ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 89~95
DOI : 10.7731/KIFSE.2012.26.1.089
In this study, we were manufactured wood flour-HDPE composites by modular co-rotating twin screw extruder with L/D ratio of 42. We was measured cone calorimeter test and thermogravimetric analysis (TGA) to find the combustion characteristics and thermal properties for wood flour-HDPE composites. We then evaluated the effect of three additive-type flame retardants on fire resistance performance. The cone calorimeter test showed that the heat release rate (HRR) of untreated composites was the highest Peak HRR (
) as well as Mean HRR (
). From the TGA, it was shown that composites added flame retardants began early thermal decomposition and improved thermal stability.
The Study on the Integrated Emergency Management System using Network GR-type Receiver and Control Desk
Baek, Dong-Hyun ; Song, Ho-Bin ; Kang, Won-Shun ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 96~101
DOI : 10.7731/KIFSE.2012.26.1.096
The buildings of domestic wear the upper floors and an underground in-depth reconciliation tendency to do and the possibility of fire occurrence at the time of formation accident is coming to be high. Therefore will be scattered to various place and is established and prevention of disaster information of the receiver which will integrate there is a necessity which will manage. In this paper away where each receiver is installed in the fire for the remote monitoring and controld able to connect to the Internet and fiber optic cable that can be networked fire receiver and control desk was constructed. Between each device can be used by the fire, and more depending on the status of monitoring and alarm, control and maintenance can be performed to develop an integrated management system. The system is evaluated by the criteria of the KFI, and for each segment of the signal propagation time to perform experiments confirmed the reliability of the performance.
Research for the Configuration of the Outside Sprinkler System
Min, Se-Hong ; Yun, Jung-Eun ; Sun, Ju-Seok ; Jeong, Sang-Ho ; Chea, Chang-Hun ; Kim, Suck-Jun ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 102~112
DOI : 10.7731/KIFSE.2012.26.1.102
In this research, configulation of outside sprinkler system the prevention and postponement of vertical diffusion of blaze was studied prior to this study, vertical diffusion protecting sprinkler head has been developed and the sprinkler system was applied with discharge pressure of 0.05 MPa and flow of 60 l/min witch is stated in NFPA13's Exposure Protection Sprinkler Systems. Through the system design, we applied the system to the sample building and we made pertinent system to work manually and automatically linked to a fire alarm system. Also, we conducted a real-size mock up test verify the cooling effect of the outer wall and the postponement effect of the flame.
A Study on the Development of a Head for Prevent the Fire Spread of Exterior
Min, Se-Hong ; Kim, Mi-Suk ; Jang, Young-Jin ; Sa, Jae-Chun ; Bae, Yeon-Jun ; Lee, Jae-Moon ;
Fire Science and Engineering, volume 26, issue 1, 2012, Pages 113~119
DOI : 10.7731/KIFSE.2012.26.1.113
In this research, in order to prevent spread of vertical flame from building exterior fire, A head was developed. The performance standards of Head development complied with NFPA 80A 18.104.22.168 (Recommended Practice for Protection of Buildings Exterior Fire Exposures) and the standards are applied to the discharge pressure was 0.05 MPa and the discharge flow rate was 60 l/min. The head was developed about applied to 0.05 MPa and 65 l/min through the process of the experiment of five times, it is processed from drencher head and used in domestic intended use and structure are quite different. An appropriate distances between the head and the head proved as the experimental results to within 3 m~5 m and it selectively applied to the design is being considered depending on the fire hazard strength.