How easy is it to disperse the contents of a sealed source into the environment?
The design and manufacture of sealed sources is to exacting British or international standards (BSI). These specify rigorous tests for resistance to impact, fire and corrosion to maintain integrity under normal and accident conditions. Determined and very extreme actions would be therefore needed to breach source integrity. In the unlikely situation that the capsule is breached it would be possible for the source to contaminate the immediate environment. Widespread contamination is more difficult, and dilution and dispersion may reduce the risk to individuals.