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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Institute of Gas
Journal Basic Information
Journal DOI :
The Korean Institute of GAS
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Volume & Issues
Volume 7, Issue 4 - Dec 2003
Volume 7, Issue 3 - Sep 2003
Volume 7, Issue 2 - Jun 2003
Volume 7, Issue 1 - Mar 2003
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Hazard Evaluation of Gas Processes Using a Multi-distinction Equipment Screening Algorithm
Yoon En Sup ; Park Jeong Su ; Ahn Sung Joon ; Han Kyounghoon ; Yoon Jong Phil ; Kim Ku Hwoi ; Shin Dongil ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 1~9
A Multi-distinction Equipment Screening Algorithm (MESA) is proposed. It selectively integrates Dow's F&EI as its process hazard index technique and ESA (Equipment Screening Algorithm) as qualitative hazard classification technique, and retrieves a detailed list of hazardous equipments with the total hazard indices of those equipments. The inherent expert system, which includes the accident scenarios of the equipments and processes and experts' views of them, narrows further down the list of hazardous equipments and recommends only the most notable candidates. Through the case study of distinguishing the hazardous ranking of the equipments of the LPG underground storage process, using the expert system or not, the applicability of MESA has been validated. Taking the characteristics of the process equipments with hazardous ranking in the point of process intrinsic safety, this proposed algorithm would contribute to providing engineers or managers with information on constructing safely devices and mitigation devices and on scheduling emergency response planning.
Consequence Analysis of Energy Facility(City Gas Pipeline)
Park Kyo-Shik ; Lee Jin-Han ; Jo Young-Do ; Park Jin-Hee ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 10~18
Consequence model has been suggested to evaluate consequence of city gas accident considering actual situation. Through event tree analysis(ETA), probable accidents were summarized and listed. Then release rate was calculated both sonic and subsonic conditions. Among city gas accidents, fire damage is the dominant one and mainly discussed; fatality, burning injury, and damage to building were estimated using the consequence model suggested. With an appropriate conditions, calculating total cost by accident was suggested.
A Study on the Probability of BLEVE of Above-ground LP Gas Storage Tanks Exposed to External Fire
Lee Seung-Lim ; Lee Young-Soon ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 19~23
The purpose of this thesis is to investigate the BLEVE probability of LP gas storage tanks which are relatively more dangerous, by the deductive calculating method using the results of Birk's pilot tank test and the required heat capacity of BLEVE. The result that BLEVEs can occur in only above 43.68 percent of liquid filling level under
of tank pate temperature and
of inner liquid temperature, was obtained and will be useful for preventing the BLEVE of LP gas storage tanks in fire sites. In addition, this research showed conditions of external leak and fire causing BLEVE, based on 15ton capacity of LP gas tank which has the same specifications as those in Puchon LP gas filling station accident. The result of the calculation is that the minimum pool fire conditions of BLEVE are above 7.2mm equivalent diameter under a liquid release condition and above 17.6mm equivalent diameter under a two-phase release condition. In the end, the result of calculating the pool size corresponding the above conditions using EFFECTS version 2.1, concludes that a minimum of 3.3 meters of diameter and 10.4 meters of height should be needed for BLEVE outbreak.
A Study on Risk Analysis and Acident Prevention Heater Interlock By-pass
Son Jae-geun ; Park Kyo-Shik ; Kang Tae-Yeon ; Yeo Yeong-Koo ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 24~27
In this paper it was investigated 15 heaters of CDU plant heater, NCC plant heater, CO plant heater, Aromatic plant heater and so on while running in our country. It was also analysed the standard of operation procedure, the action in alarm, the interlock system, the operating situation of the interlock by-pass and major accident about the heater and so on. This paper presents the installation of the on-line monitoring, the additional installation of the local pressure gauge and temperature gauge, the check in starting operation,'the management of the interlock by-pass, the change of manufacturer causing the disorder of instrument sensor, the management method of DCS alarm for methods of the interlock prevention and facilities improvement. It was few information about the heater interlock in the inside and outside of the country We mainly have studied with reflecting the opinion of the operator and manager on site, the sheet of process trouble and operation procedure and so on. we think that the accident relating to the interlock will significantly reduce if the companies apply the conclusion of this study(i.e. methods of the interlock prevention and facilities improvement).
Estimation for Adaptability of Fiber Reinforced Plastic Composite for LNG Storage Tank
Kim S. B. ; Cho J. M. ; Cho S. H. ; Kwon Y. S. ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 28~32
In order to apply the properties of fiber reinforced plastic(FRP) to support panel of polyurethane foam in LNG storage tank, we estimated the mechanical properties, degree of vapour barrier, chemical stability and thermal conductivity changes as ageing. According to the results, the mechanical strength (i.g. compressive strength, bending strength, tensile strength and shear strength) are more than 30 times higher than those of plywood. The FRP-polyurethane foam(PUF) composites have lower thermal conductivity changes as ageing than plywood-PUF composites. FRP-PUF sandwich composite for LNG storage tank with these remarkable properties are compared the abilities of these structures with those of the conventional structures(plywood-PUF sandwich composite). Finally, we can obtain the effects such as superior mechanical properties and fuel saving through improved ability of vapor barrier.
An Approach to Risk Assessment of City Gas Pipeline
Park Kyo-Shik ; Lee Jin-Han ; Jo Young-Do ; Park Jin-Hee ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 33~40
In this work, a novel approach was introduced to assess cost of loss resulting from risk as well as to help deciding inspection period through quantifying risk. In order to quantifying risk of city gas pipeline, frequency and consequence analysis were required. The main causes of city gas accident were analyzed to be digging, external corrosion, ground movement, and equipment failure. Tools to evaluate frequency of each cause was also suggested. Among city gas accidents, fire damage is the dominant one and mainly discussed; fatality, burning injury, and damage to building were estimated using the consequence model suggested. By combining frequency and consequence analysis, evaluating cost of risk management together with calculating example. This work could be applicable for city gas companies to plan how to manage risk most effectively.
The Modeling of Temperature Changes of Acetylene Clusters formed in Free Jet Expansion
Lee Kyung Hee ; Kim Hong Rak ; Kim Cheol Hyun ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 41~46
The Phase and temperature changes of large clusters formed in a free jet expansion of acetylene in 14atm and 233K has been studied. The cluster has been treated as a sphere composed of many shells. A mean diameter of 4.88 microns was obtained by modeling the experimental cooling curve of clusters based on evaporation and heat conduction theory
Adsorption characteristics of tert-Butyl Mercaptan on Impregnated Activated Carbon
Kim S. B. ;
Journal of the Korean Institute of Gas, volume 7, issue 1, 2003, Pages 47~52
The adsorption characteristics of rert-butyl mercaptan(TBM) on base activated carbon and activated carbon impregnated with
or KI were studied. Adsorption of TBM on the surface of the KI or
impregnated activated carbon was detected by gas chromatograph equipped with a flame photometric detector. The amount of adsorption on those impregnated carbon found to be 7 or 8 times greater than on the non-impregnated activated carbon and varied according to the concentration of impregnated metal. FT-IR measurement showed that major reaction occuring on the surface of the catalytic adsorbent was dimerization of TBM into di-tert-butyl disulfide which had no stench.