Probabilistic techniques in exposure assessment pdf

Further documentation is available probabilistic techniques in exposure assessment pdf. PSA analyzes vulnerabilities of complex systems and quantify risk. We present a Condition-Based PSA for augmenting PSA capabilities. We demonstrate the CB-PSA on a spontaneous Steam Generator Tube Rupture accident.

The novel approach overcomes the results of a conventional PSA. This allows specializing the PSA to the conditions of the components and systems, reducing the uncertainty on the risk measures quantified. Results show that the updated risk measures are capable of reflecting the actual state of the SG in the tailored risk evaluation. Used fugacity to allow direct comparison of chemical levels in varying matrices. Risk outcomes consistent between HQ and PRA methods. No risk predicted for D4 or D5 and negligible risk predicted for D6.

D6 toxicologic assays per OECD guidelines using a variety of standard benthic species. The benthic invertebrate fugacity biota NOEC values were then compared to field-measured invertebrate biota fugacity levels to see if risk assessment evaluations were similar on a field sediment and field biota basis. No overlap was noted for D4 and D5 95th centile sediment and biota fugacity levels and their respective 5th centile benthic organism NOEC values. In contrast, there was no indication of risk when the field invertebrate exposure 95th centile biota fugacity and the 5th centile benthic organism NOEC fugacity values were compared.

Further documentation is available here. PSA analyzes vulnerabilities of complex systems and quantify risk. We present a Condition-Based PSA for augmenting PSA capabilities. We demonstrate the CB-PSA on a spontaneous Steam Generator Tube Rupture accident.

The novel approach overcomes the results of a conventional PSA. This allows specializing the PSA to the conditions of the components and systems, reducing the uncertainty on the risk measures quantified. Results show that the updated risk measures are capable of reflecting the actual state of the SG in the tailored risk evaluation. Used fugacity to allow direct comparison of chemical levels in varying matrices. Risk outcomes consistent between HQ and PRA methods.