Confined spaces exist in almost every industry and in every workplace. At some point, daily duties require workers to enter a confined space and to confront its seen and unseen hazards.
Some confined space hazards are readily apparent. Seeing the potential for falls or entrapment from cave-ins or falling equipment can be relatively easy. However, unseen atmospheric hazards present the greatest dangers to individuals within a confined space. The lack of breathable oxygen, the presence of deadly poisonous gas vapours, such as carbon monoxide, and the potential for explosion due to dangerous levels of combustible gases all are examples of unseen atmospheric hazards. Portable gas monitoring instruments are used to detect these potentially life-threatening conditions and alert workers of the potential danger.