Every year livestock are killed or injured due to the failure of old or deficient slats. Under current regulations slats have a design life of 20 years, but their lifespan can vary greatly depending on use, load and manufacturer.
Deep or wide cracks allow the sulphates from the slurry to attack the slat and corrode the steel inside causing failure. Farmers must check their slats every year to ensure their own safety and that of their cattle.
Fig.1. Top-side of 20-year slat showing minor damage
This is the underside of the same slat as seen in image Fig.1. and the extensive damage can now been seen