Nuclear, radiological, biological or chemical (NRBC) events are actions or occurrences that may lead to the release and dispersal of hazardous materials in quantities and in circumstances that put individuals or groups at significant risk. This leaftet aims to raise awareness on basic measures to protect oneself and others in case of NRBC exposure.

ICRC, 2013

Nuclear, radiological, biological and chemical events
https://www.icrc.org/eng/resources/documents/publication/p4137.htm