Canadian Joint Incident Response Unit – Chemical, Biological, Radiological and Nuclear

Purpure a grenade enflamed between three inverted triangles conjoined at their points Or charged dexter with the nuclear radiation hazard symbol sinister with the biological hazard symbol and in base with the chemical hazard symbol all Sable;

The purple colour has long been used to represent joint forces units. The grenade refers to the role of the unit in providing general and select close support services to domestic and international operations undertaken by the Canadian Forces. The triangles containing symbols represent hazards. The three symbols within the triangles were developed in the latter part of the 20th century for nuclear, biological and chemical hazards.