Machinery Safety 101

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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Problems with our websites

Apo­lo­gies Just a quick note to all our read­ers to explain the out­ages we’ve been hav­ing. First, I want to apo­lo­gise for the down­time and sporad­ic out­ages you’ve prob­ably exper­i­enced. We tried… 

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A Note about Our Travel Policy

We believe travel gives us a broad per­spect­ive both per­son­ally and pro­fes­sion­ally. Our focus is glob­al. Our eth­ic­al pos­i­tion is clear; we believe in the health and safety of ALL people.… 

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Get the Basics Right!

For more than 15 years I’ve been teach­ing people about risk assess­ment, machinery safety and CE Mark­ing of machinery in private, onsite classes and through present­a­tions at safety con­fer­ences. Things are… 

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How to become Instantly Incompetent

Many engin­eers and design­ers fall into a really simple trap, one that makes them instantly incom­pet­ent. These are not stu­pid people. They have the qual­i­fic­a­tions, so what is it that can catch someone out… 

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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… 

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Fukushima Dai Ichi – Live

In a recent post on his For­bes blog, Edis­on 2.0, Osha Gray Dav­id­son con­nects read­ers to a live web­cam installed by TEPCO at the Fukushi­ma Dai Ichi nuc­le­ar plant. That web­cam has… 

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Worse than Worst?

  The increase to the incid­ent level at the Fukushi­ma Dai Ichi nuc­le­ar plant today by the Japan­ese Nuc­le­ar Reg­u­lat­ory Author­ity has brought the con­tinu­ing dis­aster at the crippled plant… 

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Why you should stop using the term ‘Deadman’

The Dead­man Con­trol Do you use the phrase ‘dead­man’ or ‘dead­man switch’ when talk­ing about safety-related con­trols on your machinery? I often run into this when I’m work­ing with cli­ents who… 

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Understanding the Hierarchy of Controls

The Hierarchy of Controls illustrated as an inverted triangle with each level of the hierarchy written one above the other, starting with Inherently Sfe design, then Engineering Controls, then Information for Use, then Administrative Controls and finally descending to PPE at the bottom. An arrow with the text "Effectiveness" on it runs parallel to the triangle and points downward from Inherently safe design to PPE.
This entry is part 4 of 5 in the series Hier­archy of Controls

(Eds. note: This art­icle was ori­gin­ally writ­ten in 2011 and was updated in Nov. 2018.) The “Hier­archy of Con­trols” is one approach to risk reduc­tion that has become entrenched in the… 

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