Version 2.0 of PRISM foodchain modelling software

The UK Food Standards Agency (FSA) is investing in the development of software to model radionuclide transport in terrestrial foodchains following accidental or planned releases of radioactivity to the atmosphere. The PRISM code uses a 'wrapped' version of the AMBER compartmental modelling software with a bespoke Graphical User Interface (GUI) that provides direct access to a parameter database.

The previous prototype version of the code (PRISM 1.3) provided a capability for undertaking deterministic and probabilistic foodchain calculations, including the representation of correlated model parameters. It used up-to-date models for radionuclide metabolism by animals, but the models for the soil and plant parts of the terrestrial foodchain were developed several years ago. The use of PRISM's probabilistic capabilities enables uncertainties in the calculation of potential contaminant concentration in crops and animal products to be evaluated.

Quintessa transformed PRISM from a prototype to a fully functioning assessment tool. PRISM 2.0 includes new up-to-date models for the soil and plant parts of the terrestrial foodchain and enables assessments to be undertaken for heavy metals such as lead, mercury, arsenic and cadmium as well as radionuclides.

For further information please contact Philip Maul.