A fire extinguisher is often times looked upon as a safety device and therefore many overlook these devices potential hazards. It is true, they can save lives, but they can also take lives and limbs as was the case in this accident. Back in February, as I reported in the Incident Alerts, two workers were severely injured when a fire extinguisher shell was being used as an air receiver, of which had NO RELIEF VALVE. This happened at a fire protection company. The shell catastrophically failed when they were pressurizing it and the accident claimed BOTH legs of a 35-year-old worker and one leg below the knew of a 23-year-old worker. OSHA has issued their citations…