Extension of the presumption of conformity for DIN EN 954-1?

Extension not yet decided on



 © DGUV Test

Safety standard DIN EN ISO 13849 ("Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design") supplements the essential requirements for safety-related machinery control systems set out in the EC Machinery Directive.

DIN EN ISO 13849-1 was first listed in the EU Official Journal in August 2008 and has given rise to a presumption of conformity since then. If safety-related control systems are produced in accordance with this harmonised standard, the state authorities assume that it complies with the essential health and safety requirements set out in the Machinery Directive.

The presumption of conformity for DIN EN 954-1, on the other hand, expires at the end of this year. In accordance with the new Machinery Directive, 2006/42/EC, the presumption of conformity will become void as of 29 December 2009.

At its meeting on 7 and 8 July 2009, the European Machinery Directive Working Group (often referred to as the "Machinery Committee") discussed the topic of standards for control systems and came to the following conclusions:.

  • Manufacturers who apply DIN EN ISO 13849-1 benefit from the presumption of conformity even if the machinery standards still refer to EN 954-1.
  • Harmonised machinery standards still give rise to the presumption of conformity even if they refer to the categories set out in EN 954-1. However, the standards bodies should press ahead with bringing them into line with DIN EN ISO 13849-1.

Some of the participants in the discussion advocated an extension of the presumption of conformity for DIN EN 954-1 to give companies more time to adjust to the new standard. No agreement was reached on this point. After the meeting, CEN (the European Committee for Standardization) wrote to the European Commission requesting that the presumption of conformity for DIN EN 954-1 be extended by a good three years until 31 December 2012. A decision is to be made at the next meeting of the Machinery Directive Working Group at the beginning of December 2009.

Practical solutions for evaluating machinery control systems

The DGUV's BG Institute for Occupational Safety and Health has developed a number of practical solutions to simplify the process of evaluating machinery control systems in accordance with DIN EN ISO 13849-1.


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