Theme for the month - Nitrogen related incident

An air compressor that provided instrument air to an acetylene plant and for breathing air failed. A back-up nitrogen supply from a liquid cylinder was connected to the piping system to replace the function of the air compressor. An operator put on a full respiratory face mask to load Calcium Carbide into the hopper and inhaled nitrogen. He died.

Source:EIGA

Theme for the month - Nitrogen related incident

Employee stepped into a control cubicle where the instrument air was temporarily replaced with N2 during shutdown. The green light outside the door was on indicating safe atmosphere. As soon as he stepped into the cubicle his personal O2 monitor alarmed indicating 18% O2 or less.
After exiting safely he opened the door and when O2 level was OK, checked the fan. The ventilation fan was not running. The light was wrongly wired.

Source:EIGA

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Theme for the month - Nitrogen related incident

An experienced contractor was used to purge a natural gas pipeline, 0.5m diameter 10 km long, with nitrogen before start-up. When one contractor employee and two customer employees entered the remotely located chamber, they were asphyxiated and later found dead in the chamber. Two blind flanges were leaking and the oxygen monitor was not used.
Source:EIGA