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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Institute of Gas
Journal Basic Information
Journal DOI :
The Korean Institute of GAS
Editor in Chief :
Volume & Issues
Volume 9, Issue 4 - Dec 2005
Volume 9, Issue 3 - Sep 2005
Volume 9, Issue 2 - Jun 2005
Volume 9, Issue 1 - Mar 2005
Selecting the target year
Risk Assessment of Fire and Explosion of Methane
Ha Dong-Myeong ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 1~7
The thermochemical parameters for safe handling, storage, transport, operation and process design of flammable substances are explosive limit, flash point, autoignition temperature, minimum oxygen concentration, heat of combustion etc.. Explosive limit and autoignition temperature are the major physical properties used to determine the fire and explosion hazards of the flammable substances. Explosive limit and autoignition temperature of methane fur LNG process safety were investigated. By using the literatures data, the lower and upper explosive limits of methane recommended 4.8 vol
and 16 vol
, respectively. Also autoignition temperatures of methane with ignition sources recommended
at the electrically heated cruicible furnace (the whole surface heating) and recommended about
in the local hot surface. The new equations for predicting the temperature dependence and the pressure dependence of the lower explosive limits for methane are proposed. The values calculated by the proposed equations were a good agreement with the literature data.
A Study on Estimation of Overpressure Damage Caused by Rupture of Butane Can (volume : 34 g)
Leem Sa Hwan ; Choi Ic Whoan ; Lim Dong Yeon ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 8~15
With the introduction of 40 hour working week system, more households enjoy picnics on weekends. More gas accidents take place on Saturdays and on Sundays than any other days of week. As of October, 2004 casualties resulted from butane can accidents increased 1.5 times compared to the same period of the previous year. In this study, the influence of explosion over-pressure caused by the rupture of butane can thrown away after use was calculated by using the Hopkinson's Scaling Law and the accident damage was estimated by applying the influence on the adjacent structures and people into the Probit model. As a result of the damage estimation conducted by using the Probit model, both the damage possibility of explosion over-pressure to structures 50 meters away and that of over-pressure to people 10 meters away showed nothing. The explosion efficiency used was 100 percent. As a result of this, the actual damage influenced by the rupture of butane can would be lower than the value calculated in this study and expected to be safer.
The Analysis of Inground LNG Storage Tank Compression Ring Behavior during Concrete Pouring
Kim Y.K. ; Kim J.H. ; Yoon I.S. ; Oh B.T. ; Yang Y.M. ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 16~21
Functions of the compression ring plate fixed at the concrete side wall are to connect and support the steel roof plate. It should be designed to endure stably all the loads such as weight of steel roof, inner pressure and concrete weight. Behavior of the compression ring during construction has been analyzed by the finite element method and real measured data. Additionally, on the basis of results from parametric study of design variables for the steel roof a more reasonable design method for the compression ring has been proposed.
An Analysis on the Cryogenic Distillation Process for
Separation from LNG by Short-Cut Method
Lee Youngchul ; Song Taekyoong ; Cho ByungHak ; Baek Youngsoon ; Song KyuMin ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 22~27
In this study, we analyze computational simulation of cryogenic distillation process to separate
from LNG by using the cryogenic energy. Used computational simulation program is made Smoker's equation and FUG(Fenske-Underwood-Gilliland)'s method by short-cut method. Generally speaking, the technology of carbon isotope separation is studied by many methods, especially the separation by cryogenic distillation process is commercialized because of many merits.
Development of Risk Representation System for Chemical Plane
Ko Jae Wook ; Lee Jung Woo ; Lim Dong Ho ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 28~33
Because chemical industrial facilities deal with large amount of hazardous materials, the damage affect to off-site as well as on-site when an accident occurs. So it is necessary to develop a Risk Representation System for effective control and response to major accidents. In this study a Risk Representation System(S/W) was developed to help analyzing actual risk and to set an alternative that can reduce the analyzed risk by drawing the level of individual plant's risk on a digital map network.
A Study for Prediction of Fatigue Life in Membranes of LNG Storage Tanks
Yoon I.S. ; Kim J.K. ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 34~37
The membrane for LNG storage tank behaves linearly in macroscopic view, but behaves elasto-plastically in some local areas, and has the structure undergoing both tension and bending. That is, the membrane is not able to be evaluated with the fatigue characteristics of the material, and it is so difficult to evaluate the membrane with a real big model because of the difficulty of imposing complex loads. Therefore, a prediction formula fur the fatigue life of the membrane is proposed to use for the design of LNG storage tank.
A Study on the Modified Safety Valve for Vessels of Liquefied Petroleum Gas
Rhim Jong-Kuk ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 38~42
This study introduced concept of safety valve about development of valve for LP gas cylinders. LP gas cylinders are used more because of convenience of use, but a lot of accidents are occurred. Specially, it is used by purpose to injure glossary or others and is sometimes used to a demonstration tool. Korean government was making mandatory to use overuse cutoff valve to reduce accident, but it is real condition that product development is not following. In this study, introduce concept of safety valve that introduce more original safety concept than overuse cutoff valve. This was developed by method that insert module to present use valve and flowing of gas is controlled in state that hose or regulator un-connects to valve. Also, flowing of gas cut-off immediately if hose is cut or occurrence of overuse is produced even if is using normally.
Development of Emergency Response System for Toxic Gas Facilities Using Quantitative Risk Analysis
Yoo Jin Hwan ; Kim Min Seop ; Ko Jae Wook ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 43~49
Today toxic gas has various uses. If there is a release accident, the gas rapidly disperse into the atmosphere. The extent of damage due to toxic gas accident is very wide and fatal to human being. So, it is necessary for toxic gas facilities which have high risk to construct an emergency response system that prepare to toxic release and make immediate response to be possible at accident appearance. In this study accident scenario were selected and frequency analysis was executed using FTA technique. Dispersion effect of toxic gas release was analyzed using DNV company's PHAST(Ver. 6.2). Finally, an emergency response system was developed using results of quantitative risk analysis.
Characterization and the Catalytic Properties of Alkali- Exchanged Y-Zeolites on NOx Conversion
Lee Chang-Seop ; Lee Kyung Hee ;
Journal of the Korean Institute of Gas, volume 9, issue 2, 2005, Pages 50~55
The compositional and structural properties of alkali metal ion exchanged Y-zeolites have been investigated by la number of analytical techniques and their catalytic activities were tested for NOx reduction in combination with a non-thermal plasma. The NOx conversion data for LiY, NaY, KY and CsY were measured by chemiluminiscent NOx meter in the temperature range of 100 to
. The initial activities of the catalyst at
increased in the order LiY < KY < NaY < CsY in alkali series. The activity of CsY and NaY were increased and showed maximum at
and then decreased in the plasma reactor, as the temperature increased. The activity of KY maintained same by
and then decreased, whereas the activity of LiY decreased with the increasing temperature. The CsY catalyst, which showed the highest activity in alkali metal series, exhibits a NOx conversion efficiency of