Machinery Safety 101

Interlock Architectures – Pt. 4: Category 3 – Control Reliable

Category 3 Architecture Logic Block Diagram
This entry is part 4 of 8 in the series Cir­cuit Archi­tec­tures Explored

Cat­egory 3 sys­tem archi­tec­ture is the first cat­egory that could be con­sidered to have sim­il­ar­ity to “Con­trol Reli­able” cir­cuits or sys­tems as defined in the North Amer­ic­an stand­ards. It is not the same as Con­trol Reli­able, but we’ll get to in a sub­sequent post. If you haven’t read the first three posts in this series, you may…

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The Fukushima Diaries: A Robot Operator Tells All

IEEE Spec­trum’s Auto­ma­tion Blog has run a series of excep­tion­al art­icles on the Fukushi­ma Dai-Ichi crisis since the earth­quake and tsunami occurred on 11-March. Recently they uncovered a blog writ­ten by a robot oper­at­or at the plant that speaks can­didly about the oper­a­tions there and the prob­lems occur­ring as they try to shut the plant down. From the…

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Hockey Teams and Risk Reduction or What Makes Roberto Luongo = PPE

Canucks Hockey Flag
This entry is part 2 of 5 in the series Hier­archy of Con­trols

Spe­cial Co-Author, Tom Doyle Last week we saw the Boston Bru­ins earn the Stan­ley Cup. I was root­ing for the green, blue and white, and the ruin of my voice on Thursday was ample evid­ence that no amount of cheer­ing helped. While I was watch­ing the game with friends and col­leagues, I real­ized that Roberto Luongo and Tim…

Reflections on Fukushima

Earthquake and Tsunami damage - Fukushima Dai Ichi Power Plant

The Les­sons from Fukushi­ma It’s now almost three months since the earth­quake and tsunami hit Japan’s north­east coast on 11-March. Recently, IEEE Spec­trum’s Eliza Strick­land inter­viewed Tsun­eo Futami, Super­in­tend­ent of the Fukushi­ma Dai Ichi plant from 1997 to 2000, on the events at Fukushi­ma fol­low­ing the tsunami… Futami: … TEP­CO’s civil engin­eer­ing group estim­ates the…

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Understanding Risk Assessment

A group surrounding a computer discussing a problem.
This entry is part 10 of 9 in the series Risk Assess­ment

When people dis­cuss ‘Risk’ there are a lot of dif­fer­ent assump­tions made about what that means. For me, the study of risk and risk assess­ment tech­niques star­ted in 1995. As a tech­no­lo­gist and con­trols design­er, I had to some­how wrap my head around the whole concept in ways I’d nev­er con­sidered. If you’re try­ing to fig­ure out risk…

ISO Withdraws Machinery Risk Assessment Standards

This entry is part 1 of 9 in the series Risk Assess­ment

ISO has with­drawn three long-stand­ing basic machinery safety stand­ards used inter­na­tion­ally and in the EU and replaced them with a single com­bined doc­u­ment. If you design, build or integ­rate machinery for sale inter­na­tion­ally or with­in the EU, this new stand­ard needs to be on your BUY list!

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IEC/TR 62061 – 1 Reviewed

This entry is part 2 of 2 in the series IEC/TR 62061 – 1

Why You Need to Spend More Cash on Yet Anoth­er Doc­u­ment Stand­ards organ­iz­a­tions pub­lish doc­u­ments in a fairly con­tinu­ous stream, so for those of us tasked with stay­ing cur­rent with a large num­ber of stand­ards (say, more than 10), the pub­lic­a­tion of anoth­er new stand­ard or Tech­nic­al Report isn’t news – it’s busi­ness as usu­al. The ques­tion…

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Busting Emergency Stop Myths

Emergency Stop on machine console
This entry is part 5 of 16 in the series Emer­gency Stop

There are a num­ber of myths that have grown up around emer­gency stops over the years. These myths can lead to injury or death, so it’s time for a little Myth Bust­ing here on the MS101 blog!

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New Guide to Applying ISO 13849 – 1 and IEC 62061

This entry is part 1 of 2 in the series IEC/TR 62061 – 1

IEC and ISO have pub­lished a new guide to help users select between ISO 13849 – 1 and IEC 62061. This new Tech­nic­al Report will replace Table 1 in both stand­ards.

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