2008 Schedule

Consulting

Dispersion and Consequence Modeling

Companies employ dispersion and consequence modeling for various purposes including determining impact distances for EPA's Risk Management Program (RMP) regulation; assessing the significance of hazard scenarios identified during PHA; and providing input to risk analysis.

Services Offered

Primatech calculates source terms (amount and form of material released) for toxics and flammables. For toxics, the distance traveled and coverage by the material is determined along with its effects on people and the environment. For flammables, the heat radiation from a fire is calculated together with its impact on people and property. For explosive materials, blast overpressures are calculated along with their impacts on people, equipment and structures.

Primatech uses models tailored to each situation encountered. Gas, two-phase, and liquid releases are modeled as required and discharge rates are calculated. Dispersion is modeled for buoyant or heavy gases, as appropriate. Toxicity data and dose- response models are used to model toxic effects.

Various types of fires are modeled including:

• pool

• jet

• flash

• fireballs

• warehouse

Types of explosions modeled include:

• confined

• unconfined

• dust explosions

• BLEVEs (Boiling Liquid Expanding Vapor Explosion)

• thermal decompositions

• runaway reactions

Primatech has performed dispersion and consequence modeling for various facilities. We have models available that can be used to handle a wide variety of situations.

Primatech offers the training course

• Dispersion and Consequence Modeling - 1 day