CSA Z432 Safeguarding of Machinery – 3rd Edition

If you build machinery for the Canadian market, or if you modify equipment in Canadian workplaces, you will be familiar with CSA Z432, Safeguarding of Machinery. This standard has been around since 1992, with the last major revision published in 2004. CSA has reconvened the Technical Committee responsible for this important standard to revise the document to reflect the current practices in the machinery market, and to bring in new ideas that are developing internationally that affect what Canadian machine builders are doing.

If you have interest in this standard and would like to have your thoughts and concerns communicated to the Technical Committee, please feel free to contact me with your suggestions. Work starts on 28-Jan-14. Your input is welcomed!

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 December. According to the Stakeholder Report published in the UK by BIS (the Department for Business, Innovation & Skills), a number of issues were discussed, which demonstrates that the Machinery Directive is not as ‘black and white’ as might be expected.

For example, EN 12635 (Industrial, commercial and garage doors and gates – Installation and use) is currently harmonised to the Machinery Directive, but the UK has raised a formal objection against this standard, as it would appear that there is scope for improvement. Other topics under discussion ranged from variable reach trucks, tail lifts and loader cranes, to stave splitters, dynamometers and ‘grey’ imports of machinery.

If you would like more information, copies of the current and previous Stakeholder Reports are available in PDF format from the UK Department of Business Information & Skills (BIS) web site.

Machinery Directive stakeholder report: February 2011 (PDF, 81 Kb)

Machinery Directive Working Group held on 1-2 June 2010, Brussels (PDF, 56 Kb)

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 EN 953:1997+A1:2009.

One of the changes in the new Machinery Directive is that the Essential Health and Safety Requirements (, fixed guards), states: “fixing systems must remain attached to the guards or machinery when the guards are removed.” This new requirement has also been added to the amended EN 953.

Various types of retained fastening – such as captive screws and quarter-turn fasteners – are available, but machine builders need to specify these with care if they are to find the optimum combination of purchase cost, installation cost and ease of use. Also bear in mind the requirement that “fixed guards must be fixed by systems that can be opened or removed only with tools.” What follows is a summary of some of the products and suppliers operating in this field.