SafetySmart Compliance » Blog Archive The James Beals Tragedy: The Price of Neglecting Confined Spaces Safety
The above link is about confined space tragedy in which a person died due to asphyxiation. Oxygen levels should be measured at the actual place of work before entry and every time before entry so that safe work atmosphere can be checked and ensured. Confined space hazard evaluation should be carried out however short the work is and do not believe by words but verify safe work atmosphere with measurements before entering the confined space.