Go to the main menu
Skip to content
Go to bottom
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 3, Issue 3 - Dec 1999
Volume 3, Issue 2 - Jun 1999
Volume 3, Issue 1 - Mar 1999
Selecting the target year
Three-Point Bending Fatigue Properties of Austenitic 304 Stainless Steel Sheets for Membrane
Lee Tae-Ho ; Kim Sung-Joon ; Kim Hyoung-Sik ; Kim Cheol-Man ; Hong Seong-Ho ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 1~8
Three-point bending fatigue properties of austenitic 304 stainless steel sheets were investigated at room temperature and LNG temperature(
) in the strain range from 0.43 to
. The fatigue properties at
were superior to those at room temperature due to the higher volume fractions of deformation-induced martensite. The cyclic hardening behavior owing to the deformation- induced martensite transformation was detected in both specimens. In room temperature testing, the mean load amplitude increased steadily with cycles, meaning that cumulative plastic incubation strain was required for martensite transformation. On the contrary, in
tested specimen, the mean load amplitude increased rapidly within a few cycles due to the rapid transformation of martensite, and slightly decreased after the maximum is reached probably due to dynamic recovery.
A Study for Risk Assessment of LPG Storage Facilities
Park Myung-Seop ; Seo Jae-Min ; Lee Jung-Woo ; Kim Ky-Soo ; Kim Sung-Bin ; Ko Jae Wook ; Shin Dong-Il ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 9~16
Gas energy facilities which are located in urban areas have been shown as terrifying objects to the people who live nearby, because of increasing recent disastrous accidents. So, it is essential to develop a integrated safety management system including quantitative risk assessment in order to predict and to reduce the effect of gas accidents. In this study, the framework of synthesized QRA(Quantitative Risk Assessment) considering the recent situation and condition was established in order to provide proper models for analysing gas accidents. The deviation of LPG storage facilities was described and then supposed incident scenarios were provided. Procedures which could assess the risk of facilities according to incident scenarios were showed and the practical application of individual risk was suggested in order to represent the quantified risk. And, a user-friendly computer program was developed to implement these methods at the same time.
A Study on the Management System Integrated Safety
Health and Environment in Chemical Industries
Im Cha-Soon ; Kim Sung-Bin ; Kim Ky-Soo ; Lim Dong-Ho ; Baek Jong-Bae ; Um Sung-In ; Ko Jae Wook ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 17~22
This study established management system integrated Safety
Health, Management System(SHMS) and Environment Management System(ISO 14000) which satisfy all the systems through analyzing the PSM, SMS, BS 8800 and ISRS. Also, this study presented the guideline model which can make regular document forms in the integrated Safety, Health and Environment Management System. Furthermore, integrating management system developed in this study can reduce the duplication and inefficiency of materials and human resources in chemical industries
A Study on the Variation of Explosion Characteristics by the Block in Closed Vessel
Oh Kyuhyung ; Kim Jongbok ; Lee Seungeun ; Kim Hong ; Lee Youngchul ; Park Sungsu ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 23~28
Variation of explosion characteristics by the blocks in closed vessel was investigated to analyse the effect of the block volume(volume blockage) and the surface area of the blocks(ratio of block surface area to vessel volume). Volume and surface area of blocks in explosion vessel were changed by the combination of blocks. The volume of explosion vessels was 270 liter, and the LPG-air or NG-air mixtures were ignited by the electric spark. Explosion pressure was measured with the strain type pressure transducer. From the experimental results, explosion pressure was decreased by the increase of the volume blockage and the block surface area. And the decrease of explosion pressure was more affected by the volume blockage than the surface area.
Development of Accident Frequency Analysis S/W for Chemical Processes
Seo Jae Min ; Shin Dong Il ; Ko Jae Wook ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 29~33
ln this study, a computerized prototype program was developed with frequency analysis system as a main system and data base as sub-items to utilize data. Through use of gate-by-gate analysis and minimal cut set using boolean algebra, the frequency analysis program peformed the qualitative approach for the accident development path and a quantitative risk analysis. In conclusion, it is thought that the resulting installation will be effective for lessening the probability of accidents through use of this lower cost software.
A study for an association of acetic acid with n-heptane based on the chemical theory
Hong Sungho ; Lee Jinyub ; Lee Taejong ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 34~38
To propose a model equation, an acetic acid and n-heptane binary vapor liquid equilibrium system were investigated at 298.15K and 318.15K. Pressure was theoretically estimated using an association model based on the chemical theory, in conjunction with Margules, Wilson, NRTL models. Results were compared with those of calculated values without considering association. The theoretically calculated results of association model equations show a good agreement with the experimentally observed values.
Behaviour of the Fretting Wear and Corrosion Characteristics on a Hinge Material
Kwak Nam-In ; Lim Uh-Joh ; Lee Jong-Rark ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 39~44
In the study, corrosion characteristics under various corrosion environments(neutral solution, acid solution), for various hinge materials(SM20C, BsC3 and STC4H), were investigated by immersion test, and the behaviour of fretting wear under atmosphere was studied. In immersion test, corrosion potential of those materials showed to be noble in the sequence of
> underground water>
solution, and potential of a sole material, except BsC3, was more noble than these of mixed materials. In same material SM20C, the fretting wear loss of rotary materials increased about 1.9 times to that of moving materials, because of surface hardening by frictional force.
A Study on Damge Effect from Boiling Liquid Expanding Vapor Explosion(BLEVE) of LPG Charging Facility
Roh Sam-Kew ; Kim Tae-Hwan ; Ham Eun-Gu ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 45~50
The LPG refueling station's explosion at Bucheon city was a major accident which with rare frequency of occurrence and large damage effect. Therefore, to prevent similar accident in the future from LPG charging stations which located in urban area. It needs to identify the damage effects of such facilities by comparing theoretically quantities risk and actual damage. The BLEVE effects from the accident showed similar damage effect in case of heat flux, however, the overpressure level reflected at the reduced distance by
. The structure damage to the near by area showed comparatively large heat radiation damage to the concrete structure strength and shape changes through heat flux while the overpressure effect was small.
A Study on the Vented Gas Explosion Characteristics of Indoor Leakage of the LPG
Oh Kyu-hyung ; Kim Hong ; Kim Sang-sub ; Jo Yoong-do ; Jo Jee-whan ; Oh Shin-kyu ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 51~57
A study on the vented gas explosion characteristics were carried out with the liquified petroleum gas(LPG) which is used in domestics and industries fuel. To evaluate a damage by gas explosion and to predict a explosion hazards, a series of experiment have been performed in the regular hexahedron vessel of 270
. A side of the vessel was made to setting a polyester diaphragm which was ruptured by explosion to simulate an accidental explosion which ruptured the window by explosion. Experimental parameters were LPG concentration, ignition position, venting area, a strength of diaphragm which was ruptured and distances from venting, Experimental results showed that vented gas explosion pressure was more affected by the diaphragm strength than the gas concentration, and the vented gas explosion pressure and blast wave pressure was increased with decreasing the venting area and increasing the strength of diaphragm. In this research we can find that a damage by vented explosion at the outside can be larger than the inside by blast wave pressure near the venting.
Finite Element Analysis on the Pitch Design of Ring Knot Type Membrane Unit
Kim Chung Kyun ; Lee Young-Suk ; Cha Baeg-Soon ; Oh Byoung-Taek ; Yoon In Soo ; Hong Seong Ho ;
Journal of the Korean Institute of Gas, volume 3, issue 3, 1999, Pages 58~64
This paper has been analyzed for the stress behavior problems of the ring knot membrane unit using the finite element method about the pitch design of the membrane unit, which is one of the most important parameters in manufacturing of the membrane type LNG storage tanks. The FEM results have been compared those of the existing pitch design length. The safety problem of the ring knot membrane model, which is considered in this study, does not come out any more no matter what the pitch length is used in the extra large LNG storage tanks. But in the case of the membrane for LNG tankers, it is advantageous to design the pitch short because of fatigue strength caused by repeated loadings. Looking at the deformation behaviors of the membrane corrugation, the deformation of the hight in the y direction occurs
more than that of the width in the z direction. It shows also that the deformation of the membrane with
cryogenic temperature is not so great compared with the deformation by hydrostatic pressure.