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Hydrogen jet vapor cloud explosion: A model for predicting blast size and application to risk assessment

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Releases of hydrogen at elevated pressures form turbulent jets in unconfined & uncongested regions may trigger vapor cloud explosion (VCE) as well as jet fire hazards. In the case of… Click to show full abstract

Releases of hydrogen at elevated pressures form turbulent jets in unconfined & uncongested regions may trigger vapor cloud explosion (VCE) as well as jet fire hazards. In the case of a delayed ignition of an unconfined & uncongested jet the turbulence induced by the jet release can lead to flame speeds sufficient to produce damaging blast loads, even in the absence of confinement or congestion. The VCE hazard posed by such high‐pressure hydrogen releases is not well‐recognized.

Keywords: hydrogen; jet; hydrogen jet; cloud explosion; vapor cloud

Journal Title: Process Safety Progress
Year Published: 2018

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