Definition:
Explosive Yield refers to the amount of energy released or destructive force generated by an explosion. This is typically quantified as the equivalent mass of TNT (e.g., kg or tons of trinitrotoluene), the standard reference for explosive energy.
This value is used to estimate the impact radius and damage potential of an explosion or runaway reaction scenario. It is fundamental to risk assessment, and specifically the consequence of said risk.
Key Points:
- Important in modeling overpressure hazards.
- Key parameter in vapor cloud explosion (VCE) modeling.
- Directly affects safety distance calculations, building siting, and emergency response planning.
Example:
A vapor cloud explosion with an explosive yield of 10% means only 10% of the vapor mass participates in the explosion, releasing energy equivalent to that percentage of the TNT mass. This estimate is used in consequence calculations for LOPA, facility siting, and SIL determination.
Cited Source:
- CCPS Guidelines for Vapor Cloud Explosion Modeling.