Workshop held at 6th, June 2012 in Bled, Slovenia
The presentations given at this workshop are available as PDF files, click on the links below:
This presentation covers the relevance of ISO/TC199 and ISO/TC23 standards for tractors and agricultural machinery sold in the European Union.
The “New Approach” legislation is based on the so called “harmonized standards” and is stipulating only “Essential Health and Safety” requirements. The technical details are defined in the standards.
Application of such a standard during design and build of machinery provides the manufacturer with a presumption of conformity with the safety directives. In case of conflicts, the market surveillance authorities of the member states must challenge the content of the standard and not the individual manufacturer.
Control systems on agricultural vehicles are increasing in complexity and use of electronics and software. For the safe functioning of the machine, it is mandatory that the control system is designed according to the appropriate safety level.
First of all, the concept of the control system must be safe. This means that it must respect conventions and requirements from standards, have a good designed human interface and integrate the required interlocks and safety logics.
Once the concept is defined, one has to determine the required Performance Level for a given control function. The Performance Level is a parameter for the resistance of a control system against a dangerous failure. The required Performance Level is proportional to the risk associated with a given function. Standard ISO 25119 gives guidance to the designers during the determination and the realization of a required Performance Level.
This presentation introduces to machinery standards concepts, through an overview of developments of technical standardization in history and by emphasizing economical and societal issues.
A couple of examples lead particular focus on the difference about voluntary adoption and what is enforced by law. Finally, Machinery Directive 2066/42 is introduced.