Risk factors:
(1) defect in manufacture
(2) defect in servicing or maintenance, including removal of safety features
(3) overpressurization of the contents
(4) weakening of the cylinder (corrosion, damage, etc)
Person at risk:
(1) person servicing the extinguisher
(2) person demonstrating the extinguisher
(3) person discharging the extinguisher
(4) person playing around with the extinguisher
Fatal injuries can occur if:
(1) the cylincer fragments and a large piece impacts the person's chest, neck or head
(2) the cylinder becomes a missile and strikes someone
(3) cardiac arrest triggered by the explosion
(4) toxicity of contents
