A thorough examination paying particular attention to any alteration of parts due to an impact, corrosion, cracking or deformation must be conducted a minimum of twice a year, every month in the case of heavy- duty use or in an aggressive atmosphere When laying down a load, the load and the clamp must be stable Always use the adapted individual protection equipment (gloves, safety boots, helmet, glasses…) during the material handlings Compulsory periodical check in compliance with the national regulations. Recommended at least every 12 months Never alter the equipment through welding, drilling or any other process