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Inerting is a preventive measure designed to reduce or even eliminate risks caused by one or more reactive products that have not been properly contained. This technique is used in many fields, including the agri-food, pharmaceutical, biotechnology and even oenology environments.
Inerting is first and foremost a technique that involves replacing a risky atmosphere with a more stable gas. Its aim is to create a chemically inert environment with a view to eliminating any accidental phenomenon presenting a risk such as pollution, explosion or irradiation. In concrete terms, inerting involves injecting an inert gas into the space where a hazardous product is located, to ensure that its components cannot escape from this space and come into contact with other products with which it may interact. In most cases, nitrogen, argon as well as carbon dioxide are the inert gases most commonly used to replace air, an undesirable gas or a component deemed too toxic.
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Selective sintering is a process using the rapid prototyping technique and can be used to produce a wide range of 3D printed parts. This process is used in a number of sectors, including:
- Industry for unique, precise and low-cost creations
- Automotive, for the manufacture of resistant technical parts
- Healthcare for the development of medical devices such as prostheses and implants
During the production phase of a selective laser sintering machine, it is necessary to create a neutral environment. Indeed, the high heat generated by this process presents a risk of combustion linked to the projection of dust, and can also deform the parts produced.
This is why nitrogen is injected into the production chamber to lower the oxygen level and thus make the environment inert.
In oenology, inerting is mainly based on the use of a neutral gas such as argon, nitrogen or carbon dioxide. The aim is to replace air in contact with the wine or juice in order to reduce the risks associated with oxidation phenomena of enzymatic or chemical origin. In the champagnification process, carbon dioxide is used to make the wine sparkling. The concentration of dissolved carbon dioxide thus defines the size of the bubbles.
In industrial environments, particularly in the petrochemical sector, the aim of inerting is to replace a chemically reactive or easily explosive environment with a non-combustible, non-combustible gas mixture or simple gas. In the process of inerting with a nitrogen generator, the aim is to reduce the presence of the oxidizing agent, so as to bring the gas concentration below the Lower Explosive Limit or LEL, or above the UEL, i.e. the Upper Explosive Limit. Chemically neutral, nitrogen is one of the most frequently used industrial gases.
