STRRAP SYSTEM. A Package Applied in Risk Analysis an SAfe Distance Calculations.

SANDRA MARIELA GODOY; ALEJANDRO SANTIAGO MIGUEL SANTA CRUZ; SCENNA, NICOLAS JOSE

Reliability Engineering and System Safety.

ELSEVIER

Año: 2007 vol. 92/7 p. 847 - 857

This work presents a powerful computational tool (Stochastic Toxic Release Risk Assessment Package, STRRAP) useful in riskassessment and emergency planning (safe distance calculation), which allows to handle the stochastic uncertainty of atmosphericparameters, critical for risk calculation when diffusion of hazardous gases or particulate matter occur as a consequence of an emission oraccidental release. In fact, the random behaviour of wind intensity, wind direction, atmospheric stability and temperature, given a timehorizon, (a season or a complete year), is taken into account considering also the day or night condition.STRRAP can be used for releases or emissions from static sources (for example a stack or a fixed tank in a facility) or fromtransportation accidents (road, rail, maritime and pipeline transport) involving different scenarios.After a stochastic simulation based on well-known diffusion models (dense and light gases, particulate matter) is carried out, thedownwind pollutant concentrations are obtained, in order to compute safe distances and/or individual and societal risks.Some study cases are analyzed to show STRRAP capabilities.