If you ship machinery products to the EU the Machinery Directive affects you. You have a chance to contribute to the review of this document.
For anyone involved in risk assessment and control, there are always questions regarding the amount of force it takes to injure a person. As soon as we decided that hurting people when they were working or using our products was not OK, clever people wanted to know what the limits were on forces applied to people. […]
Instructions are one of the basic items that users expect to get when they purchase a product, and yet these important documents are often poorly written, badly translated, and incomplete. Key product features are badly described, and information on features, settings and hazards may be absent. All of this despite the fact that the minimum requirements […]
Here are some more questions I’ve been asked regarding emergency stop requirements. These ones came to me through the IEEE PSES EMC-PSTC Product Compliance Forum mailing list. Primary Sources There are three primary sources for the requirements for emergency stop devices:  Safety of machinery — Emergency stop — Principles for design, 3rd Edition. ISO 13850. 2015.  Safety of […]
Every couple of months I get an email asking me if there is any reason why e‑stop functions can’t be used as the primary power control (on/off button) for machinery. Following a recent exchange, I thought I would share the reasons for why this is such a bad idea. The short answer The short answer is an unequivocal NO. Don’t […]
If you are interested in functional safety, and I know many readers are based on the statistics I see for my other functional safety-related posts, I think you will be interested in this. I am collaborating with the IEEE Product Safety Engineering Society’s Virtual Chapter to provide a series of three 35 minute seminars discussing the fundamentals of functional safety. The […]
1,000,000 views! Today marks a fantastic milestone for the Machinery Safety 101 blog – 1,000,000 views! When I started writing this blog back in October 2008, I had high hopes that a few dozens, or perhaps as many as 1 000 people would find my articles interesting enough to spend some time reading. Never in my wildest imaginings did I think […]
One of the great challenges that all product designers face is the sourcing of appropriate product safety labels. There are many sources for off-the-shelf labels including some of the biggest names in marking and labelling, but until now, none have offered a way for product manufacturers to develop standards-compliant hazard warning signs and labels themselves. If […]
This article was updated 2019-04-26, adding specific details related to IEC 60947 – 5‑5. When it comes to emergency stop devices there is no doubt that the red mushroom-head push button is the most common – they seem to be everywhere. The second most common emergency stop device is the pull-cord, and like the light-curtain in safeguarding […]
Have you ever wondered about ANSI? Needed to know how ANSI standards are developed? Find your answers and more in this post!