Machinery Safety 101

EN 954 – 1 / ISO 13849 – 1:2006 Mandatory Implementation Date Change

The EC Machinery Work­ing Group announces the exten­sion of the man­dat­ory imple­ment­a­tion date for EN ISO 13849 – 1:2008.

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More flip-flopping on EN 954 – 1?

In recent posts I’ve been dis­cuss­ing the changes in the use of EN 954 – 1, Safety of Machinery – Safety Related Parts of Con­trol Sys­tems. Part 1: Gen­er­al Prin­ciples for Design. The EU ori­gin­ally announced that this stand­ard was to be with­drawn on 31-Dec-09, being replaced by EN ISO 13849 – 1. As you may know, there are sig­ni­fic­ant dif­fer­ences in these two stand­ards.

A later announce­ment from the European Com­mis­sion repealed

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EU changes direction on EN ISO 13849 – 1

Update on EN ISO 13849 – 1 man­dat­ory imple­ment­a­tion date.

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European Commission Delays EN ISO 13849 – 1 Implementation

The EC has decided to extend the trans­ition peri­od for EN 954 – 1 from 31-Dec-09 to 31-Dec-12, delay­ing the man­dat­ory imple­ment­a­tion of EN ISO 13849 – 1. How will this affect machine build­ers and con­trols man­u­fac­tur­ers?

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ESA Manufacturer’s Registration Deadline postponed

If you’ve been fol­low­ing the dis­cus­sions on the EMC/PSTC list serv­er and else­where about the ESA Man­u­fac­turer­’s registry in Ontario, you may not be aware that ESA has dropped the August 30 dead­line for regis­tra­tion. It seems that the Ontario Gov­ern­ment and ESA are review­ing the dead­line fol­low­ing a cab­in­et shake-up at Queen’s Park. There is no word on when or if the dead­line will be rein­stated. Need to know

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ESA Manufacturer Registration in Ontario, Canada

Do you make elec­tric­al products sold in Ontario, Canada? Are you aware of the need to register your com­pany with the Elec­tric­al Safety Author­ity (ESA) in order to sell your products leg­ally? If not, spend some time and catch up on the new ESA Man­u­fac­turer­’s Registry!

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Emergency Stop – What’s so confusing about that?

Emergency Stop on machine console
This entry is part 1 of 16 in the series Emer­gency Stop

I get a lot of calls and emails ask­ing about emer­gency stops. This is one of those decept­ively simple con­cepts that has man­aged to get very com­plic­ated over time. Not every machine needs or can bene­fit from an emer­gency stop. In some cases, it may lead to an unreas­on­able expect­a­tion of safety from the user, which can lead to injury if they don’t under­stand the haz­ards involved. Some product-spe­cif­ic stand­ards

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Why Conventional EMC Testing is Insufficient for Functional Safety

At the recent PSES Sym­posi­um, I atten­ded a couple of inter­est­ing work­shops on EMC and Func­tion­al Safety. One was called “Work­shop on EMC & Func­tion­al Safety” presen­ted by Keith Arm­strong, Bill Radasky and Jacques Delaballe. The oth­er was a paper present­a­tion called “Why Con­ven­tion­al EMC Test­ing is Insuf­fi­cient for Func­tion­al Safety” presen­ted by Keith Arm­strong.

For read­ers who are new to the idea of Func­tion­al Safety, this field deals

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