If you want to store parts for a longer period of time, it is important to reduce the humidity level to around 40%. Too high humidity can eventually cause steel to rust and products to lose their quality. Too low humidity can compromise the quality of rubbers and elastomers. Corrosion protection for steel is needed to make sure that after 10-30 years, machinery and spare parts are still in good condition.

Let’s look at several ways to control humidity. 

A several ways to control humidity

Seam seal
Humidity occurs when more moisture enters from outside. It is therefore important that the leaks in the construction are properly sealed by means of seam sealing. It is important that the seal adheres well to the material, but also that it is flexible. In addition, theaesthetic aspect can still be a factor that needs to be taken into account. Curious about seam sealing in practice? Read this blog.

Air circulation
In addition to a good seam seal, proper air circulation is essential. With this, the humidity can be regulated. However, good air circulation does involve a lot of costs. It is therefore more sensible to invest money in a good seam seal, so that the costs are lower in the long term.

Choice of materials
Utilize materials that are the least susceptible to corrosion or that can withstand humidity.

Temperature control
Relative humidity does not tell how much water vapour is actually in the air. But, it tells how close the air is to being saturated. So, air is said to be saturated or full if relative humidity is 100%. Relative humidity (Rh) is inversely related to the air temperature .i.e. if temperature  increases, the Rh decreases and vice versa.

An essential aspect in controlling humidity is measuring it. After measuring the humidity possible problems can be detected and solved. The engineer makes a calculation and determines which air system is needed with which drying capacity.

Corrosion protection for steel
These methods are very effective to prevent corrosion and to control humidity. But how is this put into practice? We would like to give you an example:

ITER is working on making the largest nuclear fusion reactor ever. Not to make it commercially interesting, but to learn from the successes and mistakes in construction. In that construction, certain components of the tokamak, have to be preserved for a long period of time. It is very important that the parts remain in good condition and that no rust or mold is formed.

We at Cocoon were given the special task of organizing this. Our main job is to control humidity levels. Thanks to our mothballing system we are able to reduce the humidity level to 38%, so that the materials can remain preserved for about 20 to 30 years.

More about our methods to prevent corrosion and control humidity

Now you know the answer to the question ‘how to control humidity’ But to do this yourself is
almost impossible. Do you have a case where a large part has to be protected for a long time against
corrosion? Then have this done professionally, for example by the cocoon mothballing system.