Uncontrolled release of radioactive material from its containment. This either threatens to, or does, cause exposure to a radioactive hazard. Such an incident may occur accidentally or deliberately.
Previous index(es): Accidents (1967-1994)
Semantic type(s): Human-caused Phenomenon or Process; Natural Phenomenon or Process
MeSH record created: 30/06/1994
MeSH record revised: 28/07/2009