Machinery Safety 101

The Third Level of the Hierarchy: Information for Use

I’ve written about the Hierarchy of Controls in past posts, but I’ve focused on the ‘engineering’ side of the control equation: Physical changes to machine design to eliminate hazards, and mechanical or electrical control systems that can reduce risk. The first two levels of the Hierarchy, Elimination/Substitution and Engineering Controls, are typically more challenging to…

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Inconsistencies in ISO 13849-1:2006

I’ve written quite a bit recently on the topic of circuit architectures under ISO 13849-1, and one of my readers noticed an inconsistency between the text of the standard and Figure 5, the diagram that shows how the categories can span one or more Performance Levels. If you look at Category 2 in Figure 5,…

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EC Machinery Working Group meets

From our friends at MachineBuilding.net. It is now more than a year since the new Machinery Directive (2006/42/EC) came into force, but the situation is still fairly fluid in some respects. The EC Machinery Working Group meets regularly to discuss matters relating to the Directive and corresponding standards; the last meeting took place on 21/22…

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Retained fastenings for fixed guards

If you are building machinery that will be CE marked or is subject to the EU Machinery Directive, you need to read this article at MachineBuilding.net This article reviews some of the retained fastenings that are available for use on fixed machine guards, as required by the new Machinery Directive 2006/42/EC and the guarding standard…

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