• Safety and Health at Work
• /
• v.10 no.2
• /
• pp.151-165
• /
• 2019

Background: Despite improvements in safety performance, the number and severity of mining-related injuries remain high and unacceptable, indicating that further reduction can be achieved. This study examines occupational accident statistics of the Ghanaian mining industry and identifies priority areas, warranting intervention measures and further investigations. Methods: A total of 202 fatal and nonfatal injury reports over a 10-year period were obtained from five mines and the Inspectorate Division of the Minerals Commission of Ghana, and they were analyzed. Results: Results of the analyses show that the involvement of mining equipment, the task being performed, the injury type, and the mechanism of injury remain as priorities. For instance, mining equipment was associated with 85% of all injuries and 90% of all fatalities, with mobile equipment, component/part, and hand tools being the leading equipment types. In addition, mechanics/repairmen, truck operators, and laborers were the most affected ones, and the most dangerous activities included maintenance, operating mobile equipment, and clean up/clearing. Conclusion: Results of this analysis will enable authorities of mines to develop targeted interventions to improve their safety performance. To improve the safety of the mines, further research and prevention efforts are recommended.

• Journal of the Korean Society of Industry Convergence
• /
• v.25 no.6_2
• /
• pp.1063-1069
• /
• 2022

In modern industry, vacuum has grown into an indispensable industrial field. The performance of the vacuum pump in the degasser system among mud treatment system facilities was verified by a numerical analysis method. The degasser system is an equipment for removing the gas contained in the mud, and it is a work process that requires a vacuum. This study analyzed the vacuum pump performance of the degasser used in drilling for resource development of onshore and offshore plants. The vacuum pump used in the degasser system was designed with a discharge rate of 0.099kg/s. The DM(Design Modeler) program of ansys workbench 17.2 was used to modify the model of the vacuum pump used in the degasser system. And for performance analysis, CFX, which is known to be suitable for rotating system analysis, was used. Finally the performance analysis results of the vacuum pump and the prototype performance test results were compared and analyzed.

• Journal of the Korean Society of Industry Convergence
• /
• v.25 no.4_2
• /
• pp.603-609
• /
• 2022

Bottom hole assembly(BHA) is a key component of the drilling system, consisting of various components and tools(including the drill bit and mud motor) which operate at the bottom of the wellbore and physically drill the rock. This paper investigates the dynamic characteristics of the mud motor which is a drilling propulsion tool. And computational structural analysis is performed to calculate the von-Mises stress and the safety factor of components constituting the mud motor. In this process, the field test data of onshore drilling are used for analysis.

• Plant Journal
• /
• v.16 no.1
• /
• pp.28-33
• /
• 2020

This study analyzes the requirements for international standardization by studying the approach to international standardization of equipment and bulk materials in the offshore oil & gas industry, and describes the prioritization of standardized equipment and the result of standardization in the first stage. Currently, international standardization activities can be classified into three activities. First, international standardization activities of bulk materials led by three major domestic shipbuilders, second, JIP33 equipment standardization activities led by IOGP, and finally, And standardization activities of UEJIP equipment centered on classification society. This study classifies various international standards applied in the offshore oil & gas industry, and introduces the activities of standardization activities of class-leading equipment and actual application examples.

• Journal of the Korean Society of Industry Convergence
• /
• v.22 no.6
• /
• pp.797-805
• /
• 2019

An important problem of offshore plant process piping is equipment accidents due to the removal of fine metal debris and foreign substances in the pipes that deliver fluids such as hydraulic oil, lubricating oil and thermal oil. Temporary flushing equipment to remove debris uses fluid equipment of centrifugal pump and gear pump to prevent equipment accident of offshore platform. The equipment manufacturer requires the shipyard to have a cleanliness rating inside the pipe to meet the international standards ISO4406 and NAS1638 quality levels to prevent damage to the equipment sold. The quality of the internal flushing of pipes conforms to the regulations suggested by the equipment manufacturer. In this paper, three types of electric heater capacity, which is a method of evaporating and removing water inside a pipe during an oil flushing process, were compared. In addition, the study was conducted to remove the flushing oil in the pipe and to improve oil quality.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2002.05a
• /
• pp.717-723
• /
• 2002

Due to the development of information technology, IT industry has become the core factor of a country competence. So we recognized the importance of information network technology as a basis of IT industry. The infrastructure and service in domestic super-highway information networks show the rapid growth both in quantity and quality because of the government programs. However, foreign information network equipment companies have most of the domestic market-share and have controlled core part of the industry, thus national companies are having a difficulty in penetrating the industry market. In this paper, we will analyze domestic super-highway information network equipment industry and make its activating plan using competitive strategy model.

• Journal of the Korean Society of Industry Convergence
• /
• v.9 no.1
• /
• pp.79-86
• /
• 2006

In this study, we research and develope Intelligent Remote management controller. According to the load condition, we will apply various control techniques and plan high efficient Demand control. After development, According to the Demand Control, An electricity enterprisers will expect enlargement of equipment coefficient, elevation of back up load factor and reduction effect of equipment investment. On Customer side, They will expect reduction of electric fee, saving energy and variety of service choice.

• Knowledge Management Research
• /
• v.10 no.4
• /
• pp.163-183
• /
• 2009

Numerous studies in the field of buyer-supplier relationship research have focused on the buyer's performance. In contrast, supplier's performance has been paid relatively little attention by researchers, especially the research about the supplier's innovation in the relationship is still in its early stage. In this paper, we examine the relation between the attribute of buyer-supplier relationship and the attribute of supplier's innovation through case research. We define the attribute of buyer-supplier relationship as 'tie strength' (Granovetter, 1973), and the attribute of supplier's innovation as 'exploitation or exploration' (March, 1991). We selected the semiconductor equipment industry of U.S.A, Japan and Korea and firm (JUSUNG Engineering) as cases that examine the relation. We found that a strong tie relationship is positively associated with supplier's exploitation based innovation, and a weak tie relationship is positively related to it's exploration based innovation in this research also. In addition, we could verify reduction of strong tie relationship cause supplier's organizational change.

• Journal of Korea Technology Innovation Society
• /
• v.9 no.2
• /
• pp.279-303
• /
• 2006

We consider IT equipment industry, especially IT equipment exports, in Korea. Currently IT equipment exports are about 30% of the total exports in Korea. Furthermore the amount of IT equipment exports continues to increase. The impact of IT equipment exports to Korea economy must be large enough. However the research on this impact analysis is not found easily. In this paper we analyze the economic repercussion effects of IT equipment exports from 2002 to 2005 by using the Input-Output Analysis. The status of IT equipment exports in Korea is summarized. The extensive results on various levels of IT equipment industry are proposed.

• Journal of the Korean Society of Industry Convergence
• /
• v.25 no.2_2
• /
• pp.279-287
• /
• 2022

Butterfly valves installed on ships use valves with up to triple offset to improve tightness. However, the triple offset valve has structural problems such as disc deformation and seat separation. Accordingly, interest in quadruple offset butterfly valves with added offset is increasing. In this study, the structural safety of the quadruple offset butterfly valve was examined through numerical analysis. In addition, we intend to evaluate the performance of the valve through flow coefficient analysis.