Influence of the Inherent Safety Principles on Quantitative Risk in Process Industry: Application of Genetic Algorithm Process Optimization (GAPO)

Table 10

Result of I2SI for initial Process Design (IPD) compared to Genetic Algorithm Process Optimization (GAPO).

Equipment	Hazard index (HI)		Inherent safety potential index (ISPI)		Integrated inherent safety index (I2SI)		Total I2SI of process
	IPD	GAPO	IPD	GAPO	IPD	GAPO	IPD	GAPO
Demethanizer tower	3.13	2.00	1.20	2.26	0.38	1.13	0.23	0.79
MP REFR circulation drum	1.47	1.75	0.53	1.18	0.32	0.68
Feed HP separator	2.00	2.40	0.49	1.45	0.25	0.60
LP REFR. circulation drum	1.32	1.85	2.39	2.50	1.81	1.35