Machinery Safety 101
16 January, 2012

The Third Level of the Hierarchy: Information for Use

by Doug Nix
in Information for Use, Standards /
4 Comments
This entry is part 3 of 5 in the series Hier­archy of Controls

I’ve writ­ten about the Hier­archy of Con­trols in past posts, but I’ve focused on the ‘engin­eer­ing’ side of the con­trol equa­tion: Phys­ic­al changes to machine design to elim­in­ate haz­ards, and… 

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21 June, 2011

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

by Doug Nix
in Canada, Control Functions, EU European Union, General, Guards and Guarding, Hazards, Hierarchy of Controls, International, Risk Assessment /
10 Comments
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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28 February, 2011

Understanding the Hierarchy of Controls

by Doug Nix
in Canada, CE Mark, Complementary Protective Measures, Control Functions, Control Reliability, Emergency Stop, EU European Union, Functional Safety, General, Guards and Guarding, Hazardous Energy Control Procedures, Hierarchy of Controls, Interlocks, Interlocks, Lockout, Ontario, Risk Assessment, Robotics, USA /
9 Comments
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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