TIR
Toxic Industrial Radiologicals, radioactive materials used in industrial operations or research which have adverse effects on human health or on the environment if released. TIRs can be used as Radiological dispersion device or dirty bomb.
Glossary Source
JRC EU CBRNe Glossary
(
EU Glossary on Chemical, Biological, Radiological, Nuclear, and Explosive risks
)
https://publications.jrc.ec.europa.eu/repository/bitstream/JRC128863/JRC128863_01.pdf