Study conducted by H.N. Mathurkar ^, Dr. A. Gupta

Scientist^, HOD, National Environmental Engineering Research Institute (NEERI), Nagpur, India

Table I : Population density around the first section of the cross-country pipeline

Distance from pipeline	Population density
0 – 200 meters	47.44 persons / sq.km.
200 – 400 meters	51.09 persons / sq.km.
400 – 800 meters	56.57 persons / sq.km.

Table II : Ignition Probability as function of Population density

Ignition Probability	Population density
0.85	Less than 200 persons / sq. km
0.90	200 to 400 persons / sq. km
0.95	More than 400 persons / sq. km.

Table III : Damage distance for various failure cases for the first section of the pipeline

Cases	Consequence	Effect	Damage distance in meters for
			100 % fatalities	1% fatality
Case A – Pipeline rupture	Fire ball	Thermal radiation	200	450
Case B – Pipeline leaks	Jetfire	Thermal radiation	–	20
Case C – Pipeline rupture	VCE – 1	Overpressure wave	70	210
Case D – Pipeline leaks	VCE – 2	Overpressure wave	40	115
Case E – Pipeline rupture	Flash fire –1	Dispersion & fire	681	–
Case F – Pipeline leaks	Flash fire –2	Dispersion & fire	330	–

Table IV : Individual risk at various distance from the pipeline for the first section

Individual Risk	Distance from the pipeline
7.17 x 10-4 Fat./ yr.	100 meters
3.19 x 10-4 Fat./ yr.	300 meters
1.94 x 10-4 Fat./yr.	600 meters

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