Corrosion prevention for a seawater basin at a zoo
Task:
Cavity protection for extremely corroded cavities with rust scale.
Special Challenge:
The rust scale could only be partially removed. A lot of the peeled-off rust scales remained inside the cavity.
Solution:
We use our corrosion protection grease. To boost the capability to creep so it can penetrate the lose corrosion we modified the corrosion protection grease. We added our solvent-free penetration oil TimeMAX Speed Lotion.
Advantage:
The modified grease even penetrates thick layers of corrosion. Despite extreme pitting the facility did not have to be closed down.
One of the most important attractions in the Hannover Zoo is “Yukon Bay”. With a lot of effort a small piece of Alaska was built here. The basin for salt water shown in the picture below has walls made of steel. It is home not only to the rather harmless penguins but also to dangerous polar bears.
Penguins and polar bears need “real” seawater to be comfortable. The aggressive salt water regularly causes corrosion damage, thus the maintenance effort for Yukon Bay is quite high.
The location of our works: The steel walls next to the green crane.
Our place of work is located to its left: The red box stabilises the four-metres-high sheeting wall made of steel.
We were awarded this job in Hannover with good cause. We were hired because our corrosion protection greases have special qualities: First, they have a high capability of creep and penetrate into the corrosion fast and deeply. And our material stays right where it belongs. Even in the heat of summer it does not flow off in large amounts as other greases often do.
On the second workday the actual corrosion protection treatment began: A whole 70 litres of corrosion protection grease and an additional five litres of penetration oil were used! The oil is called TimeMAX Speed Lotion No.1 and was used first. Its task was to penetrate deeply into the thick layer of corrosion.
Wherever our materials were applied water and oxygen cannot reach the steel any more. And as we know from chemistry lessons at school there is no corrosion when there is no oxygen!