Page 157 - Pipeline Risk Management Manual Ideas, Techniques, and Resources

7/134 Leak Impact Factor

l- Dispersion

Receptors

Figure 7.1 Relative risk model.

+/-Hi K

Acute hazard

Aquatic toxicity
Mammalian toxicity
Environmental persistence
Chronic hazard 4 lgnitability
Corrosivity
Reactivity

Receptors
Population
Environment
High value areas
Spill size
r Product state (gas, liquid, combination)
Flow rate
Diameter
Dispersion Pressure
Product characteristics
Failure size
Leak detection

P
Weather
Topography
Surface flow resistance
Product characteristics
Volume released
Emergency response

Flgure 7.2 Assessing potential consequences: samples of data used to calculate the leak impact factor.