Applications of Process Safety Concepts to the Hydrogen Economy

Hydrogen is widely produced and used in the process industries with growing use in the public domain. While the former area of focus would obviously necessitate process safety considerations, the latter involves activities such as transportation in which occupational safety issues for individuals are paramount. The current research addresses this issue by identifying several areas of application in the hydrogen economy for three key process safety concepts: (i) inherently safer design, (ii) safety management systems, and (iii) the use of case studies.

An integrated impact assessment of hydrogen as a future energy carrier in Nigeria's transportation, energy and power sectors

A hydrogen economy, the long-term goal of visionary nations, has the potential to provide energy security, along with environmental and economic benefits. The concept of a hydrogen energy economy was first conceived at The Hydrogen Economy Miami Energy (THEME) Conference, held in March 1974 in Miami, Florida, where the International Association for Hydrogen Energy was established. Forty years later, advances in hydrogen technologies have led the world's most developed countries to invest extensively in preparation for a future hydrogen-based economy.

Modeling of the TOSQAN test facility with the lumped parameter code COCOSYS

Hydrogen distribution in the containment during severe accidents is an important safety issue of nuclear power plants operation. The detailed knowledge of the containment thermal-hydraulics is necessary for reliable predictions of pressure, temperature and gas distribution in the containment of the NPP during postulated accidents. For this purposes, the study of the International Standard Problem (ISP 47) has been started in 1999 with the test facilities TOSQAN, MISTRA and ThAI The paper presents the COCOSYS nodalisation of the TOSQAN test facility.

Ultrastructure of the Cellular Response of Rabbits' Gingivae to the Adverse Effects of Light Enhanced Bleaching

A total of 30 rabbits were selected. The animals were divided into equal 6 groups, 5 animals each. While a control group received no treatment (G1: normal), the animals of experimental groups (G2 to G6) were anesthetized and the labial gingivae of the upper and lower anterior teeth were painted with a layer of a mixture of a 35%2hydrogen peroxide solution and a bleaching agent during the application enamel bleaching utilizing a plasma arc lamp for three intervals, 20 minutes each.

Venting of low pressure hydrogen gas - A critique of the literature

The use of hydrogen is increasing in industrial processes, and its use is likely to increase further with its potential use as an energy carrier. The venting of hydrogen is inevitable at some time for almost all uses, and its propensity to ignite makes it essential that safe venting regimes are understood. The options for disposal by dilution to below the lower flammable limit, inerting, dispersion of flammable concentrations and flaring are discussed, along with the potential for ignition of releases within the flammable range and the subsequent need for flame extinguishing.

Microwave/H2O2 Efficiency in Pentachlorophenol Removal from Aqueous Solutions

BACKGROUND: Pentachlorophenol (PCP) is one of the most fungicides and pesticides. Acute and chronic poisoning from PCP may be occurred by dermal absorption, and respiration or ingestion. With respect to health and environmental effects of PCP, many methods were considered regarding its removal. Microwave assisted other methods are environmental friendly, safety, and economical method, consequently, in this study; microwave assisted with hydrogen peroxide (MW/H2O2) was used for PCP removal from aquatic solutions.

Wind-hydrogen energy demonstration plant in Argentina - Basis for design and safety aspects

In order to carry out the basic and detail engineering for the construction of a wind-hydrogen energy demonstration plant (WHE Demo Plant), a review of the present standards for design, accesories and instrument specifications and safety data was performed, taking into account the needed knowledge for gaseous hydrogen handling in different pressure and temperature ranges. The construction and operation of the Heavy Water Industrial Plant - Planta Industrial de Agua Pesada (PIAP) in Arroyito, Argentina, in which great flows of pressurized hydrogen are involved, is an appreciable experience.

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