Nitrogen Requirements
Asphyxiation occurs when oxygen levels in the body become so low that breathing is no longer possible. Nitrogen can be used to reduce oxygen levels in the atmosphere and cause asphyxiation. The exact amount of nitrogen needed to reduce oxygen levels to a dangerous level varies depending on the size of the space and the rate of air exchange with the outside environment.
Nitrogen Concentrations
When nitrogen is used to reduce oxygen levels, the air in the space is replaced with a nitrogen-rich atmosphere. The amount of nitrogen in the atmosphere is measured as a percentage of the total atmosphere. Generally, an atmosphere with a nitrogen concentration of around 80% or more is considered asphyxiating.
Safety Precautions
It is important to take safety precautions when introducing nitrogen into a space. Nitrogen is an invisible, odorless gas, so it is difficult to detect its presence. People exposed to nitrogen can quickly become unconscious and die from asphyxiation. It is important to ensure that proper ventilation is available and that the amount of nitrogen is strictly monitored to avoid dangerous concentrations.
