Study of Fire Risk and Accidents Emergency Disposal Technology System of Hydrogen Fuel Vehicles

As the energy crisis and environment pollution growing severely, the hydrogen fuel motor vehicle has got more and more attention, many automobile companies and research institutions invest significant R&D resources to research and develop the hydrogen fuel vehicles. With the development of the hydrogen fuel cell vehicles and hydrogen fuel motor vehicles, the hydrogen had more to more extensive application. According to the categories of the hydrogen fuel vehicles, the characteristics of hydrogen fuel vehicle fire risk and accidents are analyzed in this paper.

Adapted Tube Cleaning Practices to Reduce Particulate Contamination at Hydrogen Fueling Stations

The higher rate of component failure and downtime during initial operation in hydrogen stations is not well understood. The National Renewable Energy Laboratory (NREL) has been collecting failed components from retail and research hydrogen fueling stations in California and Colorado and analyzing them using an optical zoom and scanning electron microscope. The results show stainless steel metal particulate contamination. While it is difficult to definitively know the origin of the contaminants, a possible source of the metal particulates is improper tube cleaning practices.

Evaluation of the Protection Effectiveness Against Overpressure from Hydrogen-Air Explosion

The aim of this study is to assess the probability of the damage to hydrogen fueling station personnel exposed to the hydrogen explosion shock wave. A three-dimensional mathematical model of the explosion of hydrogen-air cloud formed after the destruction of the high-pressure storage cylinders is developed. A computer technology how to define the personnel damage probability field on the basis of probit analysis of the generated shock wave is developed. To automate the process of computing the "probit function-damage probability" tabular dependence is replaced by a piecewise cubic spline.

Security Risk Analysis of a Hydrogen Fueling Station with an On-site Hydrogen Production System Involving Methylcyclohexane

Although many studies have looked at safety issues relating to hydrogen fueling stations, few studies have analyzed the security risks, such as deliberate attack of the station by threats such as terrorists and disgruntled employees. The purpose of this study is to analyze security risks for a hydrogen fueling station with an on-site production of hydrogen from methylcyclohexane. We qualitatively conducted a security risk analysis using American Petroleum Institute Standard 780 as a reference for the analysis. The analysis identified 93 scenarios, including pool fires.

Risk Based Safety Distances for Hydrogen Refueling Stations

This paper introduces a risk-based methodology for hydrogen refueling stations. Momentarily, four stations are present in the Netherlands. This number is expected to increase to around twenty in the next years. For these stations, a quantitative risk analysis (QRA) must be carried out to account for spatial planning. The presented method identifies the loss of containment scenarios and failure frequencies. Additionally, the results of this study may be used in legislative context in the form of fixed generic safety distances.

Regulations, Codes, and Standards (RCS) for Large-Scale Hydrogen Systems

Hydrogen has potential applications that require larger-scale storage, use, and handling systems than currently are employed in emerging-market fuel cell applications. These potential applications include hydrogen generation and storage systems that would support electrical grid systems. There has been extensive work evaluating regulations, codes, and standards (RCS) for the emerging fuel cell market, such as the infrastructure required to support fuel cell electric vehicles. However, there has not been a similar RCS evaluation and development process for these larger systems.

Regulations, Codes, and Standards (RCS) for Multi-Fuel Motor Vehicle Dispensing Stations

In the United States, requirements for liquid motor vehicle fuelling stations have been in place for many years. Requirements for motor vehicle fuelling stations for gaseous fuels, including hydrogen, are relatively new. These requirements have, in the United States, been developed along different code and standards paths. The liquid fuels have been addressed in a single document and the gaseous fuels have been addressed in documents specific to an individual gas.

The International Energy Agency Hydrogen Implementing Agreement Task on Hydrogen Safety

International Energy Agency Hydrogen Implementing AgreementVision: The IEA HIA envisions a hydrogenfuture based on a clean,sustainable energy supply thatplays a key role in all sectors of theglobal economy.Mission: Accelerate hydrogen implementation and widespread utilization.Strategy: Task shared programs ofCoordinated, innovative researchDevelopment and demonstrationInformation exchangeTo eliminate or reduce safety related knowledge gaps, or insufficient data that inhibit the accelerated and widespread use of hydrogen energy:facilitate risk informed codes and standards;permitting and siti

Synthesis of the Conference

Releases:Impinging and wall attached jets and jet fires withthe associated heat transfer to set conditions for safe blowdownProperties and behaviour of cold hydrogen fromliquid releases Evaluate the effects of various LH2 spill quantities, spill-and-surrounding configurations, atmospheric conditions, ignition energy, and ignition time delays on resultant blast hazards.Further the understanding of ignition phenomena to allow suitable modelling - Perform systematic studies of the ignition energy of potential ignition sources in order to classify practical ignition sources as weak or strong in


Role of hydrogen in launch disasters?28 jan 1986 Shuttle failure of an O-ring4 june 1996 Ariane 5 software problem12 dec 2002Ariane 5 Liquid pp engine design

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