• Title/Summary/Keyword: assessment of safety

Search Result 5,533, Processing Time 0.055 seconds

Risk Assessment for the Integrated System of Hydrogen Generation System Linked to Fuel Cell (연료전지 연계 수소추출기 통합 시스템에 대한 위험성 평가)

  • DANBEE SHIN;SEONGCHUL HONG;KWANGWON RHIE;DOOHYOUN SEO;DONGMIN LEE;TAEHUN KIM
    • Journal of Hydrogen and New Energy
    • /
    • v.34 no.6
    • /
    • pp.728-733
    • /
    • 2023
  • Efforts are continuing to change from fossil fuels used to hydrogen energy society. In order to become a hydrogen society, stable production and real-life applicability are important. As a result, hydrogen generation system linked to fuel cell are being developed. Through this, it is expected that production to power generation will be possible where desired by utilizing the existing urban gas piping network. Hydrogen generation system and hydrogen fuel cell have been subjected to risk assessment and have already been commercialized, but no risk assessment has been conducted on the integrated system linking them. Therefore, it is intended to secure its safety by conducting a risk analysis on the integrated system.

Study of KMVSS for Hydrogen Fuel Cell Vehicle (수소연료전지자동차에 대한 안전기준 고찰)

  • Yong, Gee Joong;Lee, Kwang Bum;Kwon, Hae Boung
    • Journal of Auto-vehicle Safety Association
    • /
    • v.6 no.2
    • /
    • pp.72-77
    • /
    • 2014
  • In the ongoing debates over the need to identify new sources of energy and to reduce the emissions of greenhouse gases. Hydrogen has emerged as one of the most promising alternatives due to its emissions from the vehicle being virtually zero. The governments have identified the development of regulations and standards as one of the key requirements for commercialization of hydrogen-fueled vehicles. Regulations and standards will helpful in overcoming technological barriers to commercialization. Developments of a technique for safety assessment of Hydrogen Fuel Cell Vehicle(HFCV) includes four tasks, research for regulation system and policy, hydrogen safety, vehicle operation safety and protection against high-voltage. The objective is to establish a technique for safety assessment and amend safety standards for HFCV and consequently reflect research results to vehicle management policy. We devised safety standards and evaluation techniques with regard to high-pressure gas and high voltage of hydrogen fuel cell vehicle. Korean Motor Vehicle Safety Standards(KMVSS) for HFCV was amended to June 10, 2014. including the results of the safety assessment technology for high-voltage and hydrogen characteristics.

Isolation and Characterization of Bacillus sp. Producing Broad-Spectrum Antibiotics Against Human and Plant Pathogenic Fungi

  • Chen, Na;Jin, Min;Qu, Hong-Mei;Chen, Zhi-Qiang;Chen, Zhao-Li;Qiu, Zhi-Gang;Wang, Xin-Wei;Li, Jun-Wen
    • Journal of Microbiology and Biotechnology
    • /
    • v.22 no.2
    • /
    • pp.256-263
    • /
    • 2012
  • A strain of bacterium producing antifungal antibiotic was isolated and identification of the strain was attempted. We could identify the bacterium as being a Bacillus sp., based on morphological observation, physiological characteristics, and 16S rDNA sequence analysis, thus leading us to designate the strain as Bacillus sp. AH-E-1. The strain showed potent antibiotic activity against phytopathogenic and human pathogenic fungi by inducing mycelial distortion and swelling and inhibiting spore germination. The antibiotic metabolite produced by the strain demonstrated excellent thermal and pH (2-11) stability, but was labile to autoclaving. From these results, we could find a broader antifungal activity of Bacillus genus. Isolation and characterization of the active agent produced by the strain are under progress.