• Proceedings of the Korea Society for Energy Engineering kosee Conference
• /
• 2010.04a
• /
• pp.37-41
• /
• 2010

• 한국가스학회:학술대회논문집
• /
• 2003.05a
• /
• pp.132-135
• /
• 2003

• Transactions of the Korean hydrogen and new energy society
• /
• v.35 no.1
• /
• pp.56-65
• /
• 2024

Fuel cell powered unmanned aerial vehicles (UAV) are globally being developed for various application according to hydrogen roadmap. However, safety standards for hydrogen fuel cell for UAV have not been established. Therefore, in this study, we derive safety data based on risk assessment to develop safety standards for fuel cells for UAV. We use fault tree analysis method which is broadly used in hydrogen facilities as a risk assessment tool. We set hydrogen leaks and fires as top events and derived the basic events. Safety data for the basic events were derived by quoting overseas safety standards related to fuel cells. The safety data will be used for developing fuel cell inspection standard according to Act on Hydrogen Economy Promotion and Hydrogen Safety Management.

• Journal of the Korean Institute of Gas
• /
• v.21 no.6
• /
• pp.81-87
• /
• 2017

SOFC(Solid Oxide Fuel Cell) is one of the high-temperature fuel cells, SOFC system and Stack has a high temperature operating Characteristics. These Characteristics cause a lot of trouble in the design of the system and selection materials, securing durability, and securing safety performance. Therefore, For Commercialization and Supply of SOFC, the development of safety performance assessment techniques and evaluation systems should go together. In this study, we analyzed the evaluation items of SOFC Safety performance standards and risk factors of the stack for design of stack safety performance evaluation system. Based on the analyzed data, the evaluation item was deducted for design of stack safety performance evaluation system. Through the results of this study, we expect to facilitate the supply of SOFC and contribute to a safe use environment.

• Journal of the Korean Institute of Gas
• /
• v.15 no.1
• /
• pp.46-53
• /
• 2011

The information technology paradigm has been shift to smart service environment, as ubiquitous technology is used in the latest industry trend. The convergency between industry facilities and ubiquitous technologies accelerate related studies and technologies because of increasing accident prevention and decreasing cost. However, ubiquitous technologies are not used to life environment and industry facilities, because those technologies did not consider industry domain characteristics by means of developing IT technology for common environment until now. This paper aims to develop wireless city gas safety management system, which provide efficient service, and establish the field oriented wireless data transmission infrastructure in order to use ubiquitous technology to city gas facilities.

• Journal of the Institute of Electronics Engineers of Korea SC
• /
• v.48 no.3
• /
• pp.13-20
• /
• 2011

In this paper, we proposed a system to raise gas safety management by using the wireless communication module and intelligent gas safety appliances. Our designed systems configure a micom-gas meter, an automatic extinguisher, sensors, and a wallpad. A micom-gas-meter monitors gas flow, gas pressure, and earthquake. An automatic fire extinguisher checks gas(combustible) leaks and temperature of $100^{\circ}C$ and $130^{\circ}C$. Sensors measure smoke and CO gas. In our novel system, a micom-gas meter cut off inner valve with warnings, an automatic fire extinguisher cut off middle valve and spray extinguishing materials, and sensors generate signals for smoke and CO when occurring gas risk. Gas safety appliances and sensors takes safety measures, and transmit those signal to a wallpad. The wallpad again transmit signal like events to a control server. Users can connect web pages for gas safety through B-ISDN and control and manage them. We hereby devised scenarios for gas safety and risk management, and demonstrated their effectiveness through experiments.

• Journal of the Korean Institute of Gas
• /
• v.12 no.2
• /
• pp.48-52
• /
• 2008

According to extremely industrial growth, gas facilities, equipments and chemical plants are gradually increased due to incremental demands of annual amount of gases. The safety management of gases, however, is still far from their requirements. Methane, the principal ingredient of natural gas, is inflammable and explosive and is much used in factories and houses. Therefore, these gas safety management is essential. So, we, with a program of the gas safety management, hope to develop the detection system of methane gas leak using mid-infrared ray LED and PD with $3.2\;{\mu}m$. The cryogenic cooling device is indispensible at laser but needless at LED driven on the room temperature if manufacturing optical sensor with $3.2\;{\mu}m$. It, consequently, is not only possible to implement for subminiature and portable type but also able to speedily detect methane of extremely small quantities because the $CH_4$ absorption intensity at $3.2\;{\mu}m$ is stronger than that at $1.67\;{\mu}m$. Our objective of research is to prevent gas leak accidents from occurring previously and to minimize the extent of damage from them.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
• /
• 2007.11a
• /
• pp.212-215
• /
• 2007

• Journal of the Korean Institute of Gas
• /
• v.22 no.5
• /
• pp.72-78
• /
• 2018

Recent trends in gas safety devices are actively developing and researching wireless gas safety devices in response to the development of wireless technologies and the needs of customers. Although there is controversy over the reliability of wireless, the strength of wireless convenience is increasing the introduction of gas safety devices, a reasonable performance evaluation method is needed to verify the safety and reliability of these devices. This paper amis to propose designing and manufacturing performance assesment equipment and methods for evaluating performance so that the safety and reliability of wireless gas safety devices can be verified and distributed smoothly. So, this study reviews the functions and methods of verifying reliability and safety by investing domestic and foreign the related wireless gas safety devices, produces equipments capable of testing major functions, and presents key performance assessment item and test methods that satisfy the reliability and safety requirements of wireless gas safety devices.

• Journal of the Korea Safety Management & Science
• /
• v.6 no.2
• /
• pp.23-33
• /
• 2004

Domestic city gas is supplying in an about 10 million household on present 34 city gas companies because is begun to supply regularly after two 1980 years middle. But, result that focus on city gas supply spread and stable supply for supply area and neglects about safety problem, hundreds casualties such as Ahyun explosion accident and Deagu city gas explosion accident were reached in situation that occurred large size calamity occurs it is dizzliness. In the case of advanced nation, can see that accomplish system and progress that in technology after experience major accident. Therefore, grasp problem investigating safety actual conditions for city gas institution and study about solvable plan is required this. Also, must guide reform and level elevation of a domestic company safety technology through induction and development of safety technology that is suitable in supply, domestic real condition etc. Must help in power positivity that is full text executing high-quality safety education about step High firing mechanism safety technology than present safety education.