Hierarchy Archives | Machinery Safety 101

16 January, 2012

The Third Level of the Hierarchy: Information for Use

by Doug Nix

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…

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

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…

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 /

8 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…

File	DLs
A User’s Guide to Conveyor Belt Safety—Protection from Danger Zones	15663
OMRON Proper Installation of Rope or Wire Pull Emergency Stop Devices	5389
Rockwell Automation: Palletizer Functional Safety with relay and configurable relay solution.	4187
Safe Speed & Standstill Monitoring	3260
Study of Machine Safety for Reduced-Speed or Reduced-Force Work	2894

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