Inert gas blanketing, also known as ‘tank blanketing,’ is a technique that can be used to prevent spoilage in oxygen-sensitive products such as food, oils and intermediate products, and to avoid reaching explosive and flammable conditions in a container or process area.

Inert gas blanketing controls oxygen levels through the use of inert gas. The level of oxygen in the container’s headspace is measured and when certain conditions are met, the air surrounding a particular substance being processed is displaced by using inert gas to blanket the vapor space of its container.

Displacing the air eliminates the presence of oxygen (air is made up of 20.9% oxygen) that could be in contact with the vapor phase of the substance being blanketed, and also displaces moisture, which could cause spoilage through hydrolytic oxidation. Additionally, by eliminating or decreasing oxygen to a level that cannot support combustion, the risks of flammability are virtually eliminated. Unlike fire suppression or explosion venting systems that operate after the fact, inerting safely protects workers and equipment by preventing combustion before it happens.

So, if you are a process engineer looking for a solution to improve your product quality or a health and safety officer looking to reduce the risk of hazardous, flammable processes, this document will help you:

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