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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 15, Issue 6 - Dec 2011
Volume 15, Issue 5 - Oct 2011
Volume 15, Issue 4 - Aug 2011
Volume 15, Issue 3 - Jun 2011
Volume 15, Issue 2 - Apr 2011
Volume 15, Issue 1 - Feb 2011
Selecting the target year
Developing Mobile Safety Management System for City-Gas Supply Facilities
Oh, Jeong-Seok ; Sung, Jong-Gyu ; Park, Jang-Sik ; Kim, Ji-Yoon ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 1~7
DOI : 10.7842/kigas.2011.15.6.001
The Measurement of risk parameter in city-gas equipments have been measured and confirmed by human, and evolved into remote monitoring system using wireless communication. Furthermore, domestic and international industry increase the efficiency of management, which can develop remote monitoring and control system using wireless communication. However, Those wireless system might be decrease the efficiency and ease because of connecting PDA and lap-top using wire-cable when data have checked immediately from outside. This paper is able to improve efficiency of safety management on city-gas equipments by developing mobile city-gas safety management system on AR.
A Study on Safety and Operational Management System for CNG Filling Stations
Yang, Jae-Mo ; Kim, Bum-Su ; Yong, Jong-Won ; Ko, Byung-Seok ; Lee, Dong-Hyuk ; Ko, Jae-Wook ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 8~13
DOI : 10.7842/kigas.2011.15.6.008
All over the nation, a lot of industrial complex utilize gas as their energy source. Possibilities are fire, explosion, and leakage could happen any time in these large complexes. To prevent these tragic accidents and to minimize the damage when the accident occurs, the development of diagnostic technology for these facilities is imperative. The safety check is conducted on an individual and partial basis, currently. Accordingly, the accumulation and improvement of the safety management technology is necessary in order to make all the different checking techniques and management systems compatible, since checking processes, result interpretation techniques, and subsequent prognoses are not the same. The program provides damage scenarios from gas leakage. The output enables policy makers to predict the degree of infliction. Through this program, engineers are able to design an effective gas safety program to operate and maintain ubiquitous gas facilities.
Effect of Thickness Eccentricity on Plastic Collapse of Subsea Pipeline under External Pressure
Baek, Jong-Hyun ; Kim, Young-Pyo ; Kim, Woo-Sik ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 14~19
DOI : 10.7842/kigas.2011.15.6.014
The objective of this study was to investigate the effect of the thickness eccentricity on the collapse pressure of a subsea pipeline subjected to external pressure. The collapse behavior of the subsea pipeline containing initial imperfection was evaluated using elastic-plastic finite element (FE) analyses. API 5L X65 and API 5L X80 Pipelines with the thickness eccentricity values between 4~16% were adopted to investigate the plastic collapse under hydrostatic pressure. A parametric study was shown that the plastic collapse pressure decreased when either the thickness eccentricity or the ratio of diameter to thickness increased.
Comparisons of the Consequences Based on the Damage Area and the Financial Loss in a Petrochemical Plant
Kim, Bong-Hoon ; Lee, Hern-Chang ; Choi, Jae-Wook ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 20~27
DOI : 10.7842/kigas.2011.15.6.020
The consequence analysis (CA) is widely using in the petrochemical plant through adoption of the process safety management (PSM) system, but it has not practical problem that the CA was not reflected effects for employee count, business interruption loss, utility usage, and etc.. In this study, to establish the practical emergency response plan and to achieve risk based management, the consequence based on the damage area and the financial loss were estimated and compared through application on facilities in the petrochemical plant. If the damage area is used, the consequence category must be determined by safety area considering simultaneously damage area, fatality area and toxic area. Also, the consequences based on the financial loss is more practical method for the case of considering process properties and circumstances.
Study for Failure Cases on Engine Electronic Control Computer in Liquid Petroleum Gas vehicle
Lee, Il-Kwon ; Kim, Young-Gyu ; Kook, Chang-Ho ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 28~33
DOI : 10.7842/kigas.2011.15.6.028
The purpose of this paper analyzes and studies to improve the failure cases on the computer that one of electronic control elements for engine in liquified petroleum gas vehicle. The first case, it certified the non-starting phenomenon of engine that it's electronic control unit didn't control the fuel for idle speed actuator because of no given action signal in slow-cut solenoid valve. The second case, it knew the bad condition phenomenon of engine and back-fire by the wire melting of ignition coil and firing of transistor being inside ECU. The third case, it certified the action stoping phenomenon of engine and malfunctioning signal for engine ECU because of leakage of current and an excess current by moisture inflowing inside ECU curcuit plate. Therefore, it is thought that will elevate the durability and reliability of engine computer throughout procure of quality.
FE Analysis on Stress and Deformation Behaviors of Elastomeric Contact Seals for a Pipe
Kim, Chung-Kyun ; Kim, Tae-Hwan ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 34~37
DOI : 10.7842/kigas.2011.15.6.034
This paper presents sealing contact stress and deformation behaviors of an elastomeric contact seal for a pipe connection. In this study, a pipe connection is used by a joint nut and an elastomeric contact seal with a sealing interference of 0.2~0.5mm. A sealing interference in which compresses an elastomeric contact seal is generated by fastening a joint nut between two pipes. The FEM computed results show that the contact normal stress of contact model 1 with an inclined sealing surface is 1.5~1.75 times high in compared with that of contact model 2 with a parallel sealing surface. This indicates that the sealing contact surface recommends a wedge contact mode between two pipe connections for a high sealing compression stress.
Case Studies for Optimizing Energy Efficiency of Propane Cycle Pressure Levels on C3-MR Process
Lee, In-Kyu ; Tak, Kyung-Jae ; Lim, Won-Sub ; Moon, Il ; Kim, Hak-Sung ; Choi, Kwang-Ho ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 38~43
DOI : 10.7842/kigas.2011.15.6.038
Natural gas liquefaction process runs under cryogenic condition, and it spends large amount of energy. Minimizing energy consumption of natural gas liquefaction process is an important issue because of its physical characteristics. Among many kinds of natural gas liquefaction processes, C3-MR(Propane Pre-cooled Mixed Refrigerant) process uses two kind of refrigerants. One is the propane as the pure refrigerant(PR) and the other is the mixed refrigerant(MR). In this study, to find the optimal compressing level, propane cycle is simulated on different pressure level. The case study result shows relationship between energy consumption and pressure level. As a result, the conclusion is that at a higher pressure level, process consumes lower energy. At 5 pressure-levels, energy consumption is 23.7% lower than 3 pressure-levels.
A Study on the Role Promotion of Non-governmental Organization for Accident Prevention
Baek, Jong-Bae ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 44~50
DOI : 10.7842/kigas.2011.15.6.044
This study is to investigate the role of the private institution which has the essential resources to solve an urgent problem for the decreasing and prevention of the industrial accident and to suggest the reinforcing model of reliability, expertise, competency of private institution. And the result of this study will be judged to present a milestone to establish a role essentially for preventing industrial accident among government agencies, public institutions and private institutions. It will also help the vitalization of an industrial safety and health market and can be utilized for the revision of Industrial Safety and Health Law and a state affairs plan.
Discussions on the Cause of Mixed Gas Cylinder Rupture
Yoon, Jae-Kun ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 51~56
DOI : 10.7842/kigas.2011.15.6.051
Mixed gas cylinder(80% Ar, 20%
) exploded three years ago. But the cause of cylinder rupture was not identified and the case was finished. This paper is the discussions on the cause of cylinder explosion with the investigation report by the police and the similar accident cases. The cause of explosion is the chemical reaction in the cylinder. This accident is similar with the explosion of pressurized oxygen cylinder.
On the Optimized Design of a Composite Hydrogen Fuel Tank using Taguchi Method
Kim, Chung-Kyun ; Kim, Do-Hyun ;
Journal of the Korean Institute of Gas, volume 15, issue 6, 2011, Pages 57~62
DOI : 10.7842/kigas.2011.15.6.057
In this study, the optimized design for 130 liter storage fuel tank with 70MPa filling pressure has been investigated using a FEM technique and Taguchi design method. The strength safety of a composite fuel tank in which is fabricated by an aluminum liner of 6061-T6 material and carbon fiber wound composite layers of T800-24K has been analyzed based on the criterion of design safety of US DOT-CFFC and Korean Standard. The FEM computed results on the stress safety of 70MPa hydrogen gas tank were compared with a criterion of a stress ratio, 2.4 of US DOT-CFFC and Korean Standard, and indicated the safety. Thus, the optimized design elements based on the Taguchi's method were recommended as an aluminum liner thickness of 6.4mm, a carbon fiber laminate thickness in hoop direction of 31mm and a carbon fiber laminate thickness in helical direction of 10.2mm, which is represented by a design model of No. 5.