Machinery Safety 101

Conveyor System Safety

Processing of waste electrical and electronic materials
This entry is part 1 of 1 in the series Con­vey­or systems

If you design, integ­rate or use con­vey­ors in your oper­a­tion, you should have a sol­id grasp on the basic safety require­ments for con­vey­or sys­tems. This art­icle will get you up to speed on everything you need to know! 

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SPCE 2020

The IEEE Sym­posi­um on Product Com­pli­ance Engin­eer­ing is the premi­er product safety engin­eer­ing con­fer­ence, a place where engin­eer­ing pro­fes­sion­als in con­sumer products, IT, med­ic­al, indus­tri­al and pro­fes­sion­al equip­ment gath­er each year… 

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ISO/DIS 13849 – 1 Available for Public Review

Decision tree used to determine PL based on risk parameters.

Update 2020-10-11: The next three-day ISO/TC 199/WG8 meet­ing runs Tues­day-Thursday this week. Our com­mit­tee mem­bers will be wad­ing into the next 1 600 com­ments along with expert mem­bers from around the… 

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Brexit’s impact

Brexit: UK and EU Flags against a blue sky

The UK Con­ser­vat­ive Party win last week has finally drawn an end to the ongo­ing uncer­tainty cre­ated by the Brexit ref­er­en­dum and the dither­ing that fol­lowed the UK Par­lia­ment. Prime… 

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Using Form C relays in safety circuits

I recently had a dis­cus­sion with a col­league who wanted to know if it was OK for a design to include a form C relay in an e‑stop cir­cuit. You might recall that e‑stop functions… 

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EU Machinery Directive Public Review

Rule books stacked up on a table in a library.

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.

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Force and injury — How hard is too hard? ISO/TR 21260 will help

ISO/TS 15066 body model
This entry is part 5 of 5 in the series Hier­archy of Controls

Force rep­res­ents the mech­an­ic­al energy that causes injury to the human body. ISO/TC 199 has been work­ing on answer­ing that ques­tion since 2012.

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Instructions for Use – the New ISO 20607

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… 

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More E‑Stop Questions

This entry is part 17 of 16 in the series Emer­gency Stop

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… 

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Can Emergency Stop be used as an “on/off” control?

Emergency Stop Button
This entry is part 16 of 16 in the series Emer­gency Stop

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… 

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