Studying Probability of Domino Effect in Chemical Storage Tanks Using Hazard Index

Table 1

Escalation vectors for categorization of different primary scenarios and intensity assessment criteria of escalation vectors

Primary scenario	Escalation vector	Equipment category	Threshold value	Escalation vector
Fireball	Heat radiation	Atmospheric; pressurized	15 kW/m^2; 50 kW/m^2	Fireball radius
Jet fire	Heat radiation	Atmospheric; pressurized	15 kW/m^2; 50 kW/m^2	The distance at which heat radiation equals the threshold value
Pool fire	Heat radiation	Atmospheric; pressurized	15 kW/m^2; 50 kW/m^2	The distance at which heat radiation equals the threshold value
Vapor cloud explosion	Overpressure (F ≥ 5; Mf ≥ 0.35)	Atmospheric pressurized	22 kPa; 16 kPa	The distance at which peak pressure equals the threshold value
BLEVE	Overpressure; fragment projection	Atmospheric pressurized any	22 kPa; 16 kPa; Undefined	The distance at which peak pressure equals the threshold value; Fragment projection Fragment impact Maximum projection distance
Mechanical explosion	Overpressure; fragment projection	Atmospheric pressurized any	22 kPa; 16 kPa; Undefined	The distance at which peak pressure equals threshold value Maximum projection distance