The various parts of machinery or related products and their linkages shall be able to withstand the stresses to which they are subject when used.
The durability of the materials used shall be adequate for the nature of the working environment foreseen by the manufacturer, in particular as regards the phenomena of fatigue, ageing, corrosion and abrasion.
The instructions for use shall indicate the type and frequency of inspections and maintenance required for safety reasons. They shall, where appropriate, indicate the parts subject to wear and the criteria for replacement.
Where a risk of rupture or disintegration remains despite the measures taken, the parts concerned shall be mounted, positioned or guarded in such a way that any fragments will be contained, preventing hazardous situations.
Both rigid and flexible pipes carrying fluids, particularly those under high pressure, shall be able to withstand the foreseen internal and external stresses and shall be firmly attached or protected to ensure that no risk is presented by a rupture.
Where the material to be processed is fed to the tool automatically, the following conditions shall be fulfilled to avoid risks to persons:
- a)when the work piece comes into contact with the tool, the latter shall have attained its normal working condition;
- b)when the tool starts and/or stops (intentionally or accidentally), the feed movement and the tool movement shall be coordinated.