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Quantitative Risk Assessment For quantitative risk analysis (QRA), the risk of the facility or operation is measured by calculating the expected severity and probability of accident sequences. Techniques such as fault tree analysis (FTA) are used to determine probabilities of events. Consequence estimates are obtained using source term models to calculate material releases, dispersion models to calculate concentrations at points within and around the facility, health effect models to determine the effect of released materials on workers and the public, and f/n (societal risk) curves to assess the likelihood of an undesirable impact to the neighboring community. QRA is particularly effective in providing a frame of reference in decision-making of complex risk issues. AcuTech has used QRA extensively to assist management with difficult decisions. That experience has been used to evaluate offshore oil platforms; unloading, storage, and distribution operations; and chemical manufacturing plants. AcuTech’s Consulting Services :
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