The death of a truck driver in the Tempika Lehigh tunnel in Pennsylvania (USA), occurred on 21 February 2018, it was caused by the detachment of a lighting fixture from the vault, following the breakage of a corroded support bracket.
The investigation carried out by the competent authority FHWA ascertained that the bracket, painted with PVC, it was completely corrosa.
Subsequent inspections found that other similar support systems were corroded and were immediately replaced.
It is useful to note that, in such highly corrosive environments, the use of the technique of Zincatura a spruzzo it is the most effective protective system against corrosion, not only for the structural elements (like the iron armor of reinforced concrete), but also for non-structural ones, Which: lighting systems, sign posts, drainage channels, etc..
The Zincatura a spruzzo is the only system that allows you to carry out zinc coatings up to 300-500 micron, guaranteeing a duration of the life cycle of the product higher than 80 years before performing the first maintenance.