Modelling of catastrophic flashing releases

Area of Science:

• Chemical Engineering
• Process Safety
• Thermodynamics

Background:

• Low boiling point materials stored under pressure pose significant risks.
• Accidental releases, especially from catastrophic vessel failure, can be disastrous.
• Such failures can lead to rapidly expanding, two-phase, vaporizing clouds.

Purpose of the Study:

• To comprehensively review physical processes for modeling catastrophic vessel failures.
• To analyze existing models, experimental data, and incident data.
• To develop an improved methodology for characterizing source conditions after vessel failure.

Main Methods:

• Literature review of physical processes and existing models.
• Analysis of experimental data related to vaporizing clouds.
• Examination of incident data from past vessel failures.
• Development of a new methodology for source condition characterization.

Main Results:

• A comprehensive review of physical processes governing catastrophic vessel failures.
• Identification of gaps and limitations in existing models.
• Validation of models using experimental and incident data.
• An improved methodology for characterizing the source conditions of vaporizing clouds.

Conclusions:

• Understanding the physics of catastrophic vessel failure is crucial for safety.
• Existing models require refinement based on empirical and incident data.
• The developed methodology enhances the characterization of hazardous release scenarios.
• Improved source condition characterization leads to better risk assessment and mitigation strategies.