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Tuesday, December 16, 2008 9:50 AM

Your Risk Analysis - An Obligation vs A Tool

The phone rings on my desk. It’s an engineer from a manufacturing company in Colorado calling to ask for advice. He wants to know if a contactor should be applied to an output circuit to achieve a safe circuit? What’s wrong here? Yea, the
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Tuesday, September 02, 2008 1:19 PM

E-stops and Compliance

Check this out! Do you wire your e-stops to a standard (non Safety) PLC or controller in order to comply with the mandatory category 0 or 1 stop? Think twice is my advice! Yes, the safety standards such as NFPA 79, 9.2.5.4.1.3 require that an e-stop "shall
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Friday, June 13, 2008 12:43 PM

Machine Safety Blog Takes Off

Great News! My machine safety blog is now part of an innovative new educational-based safety website that’s sole purpose is to serve the safety needs of general industry. I’m excited to be a part of a group of industry experts who’ve
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Wednesday, June 04, 2008 12:44 PM

E-Stop - a safety device or not?

How many hands can I see for “safety device”? Now, how many of you say – no , an e-stopping device is not a safety device? I see! So the room is practically divided into two camps. One of the camps has several individuals that sit on
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Wednesday, June 04, 2008 11:19 AM

Machine Safety - Tolerable Risk vs Acceptable Risk

Tolerable risk is the term used for the past several years referring to a level of residual risk for a given hazard after applying risk reduction measures. ANSI B11.TR3; 2000 further defines tolerable risk as: Risk that is accepted for a given task and
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Wednesday, January 23, 2008 3:56 PM

Which Has Machine Safety Priority - ANSI B11.000X or NFPA 79?

I often hear discussions about NFPA 79 (Electrical Standard for Industrial Machinery) having more importance than the ANSI B11 series of machine tool standards. Conversely, there’s an equal if not larger camp of user’s that profess the ANSI
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Wednesday, September 12, 2007 2:06 PM

Categories of Risk – Alive or Dead?

Yes it’s true, Europe has started a two year phase out of the risk categories; B, 1, 2, 3, & 4 as established by EN 954:1996 and hence referenced in numerous US based standards such as NFPA 79, ANSI B11, S2, ANSI B155.1, etc. to name a few.
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Tuesday, June 12, 2007 3:28 PM

Where's OSHA ??

We’ll – from where I stand it’s been since 1999 that the voluntary consensus standards began their migration march of updating approaches for machine safe guarding. That first standard was RIA 15.06 for industrial robots. One of many
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Tuesday, June 12, 2007 12:09 PM

Machine Safety Influence From Europe

Some folks in machine safety are off learning about European standards like IEC 60204, IEC 62061, and the recently updated ISO 13849-1. These standards talk about the safe guarding of machines and use terms like; SIL (Safety Integrity Level), PL (Performance
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Tuesday, May 22, 2007 1:33 PM

Simplified Machine Safety – Blah Humbug

How can this be? How could machine safety be more simple and easy than hard wiring 50 or 100 relays back to a machine control system? We’ve been doing it this way for over 30 years and our machine up time is above average at 68%! How many of us
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Monday, April 09, 2007 8:47 PM

Machine Safety Influence From Europe

Some folks in machine safety are off learning about European standards like IEC 60204, IEC 62061, and the October 2006 updated ISO 13849-1. These standards talk about the safe guarding of machines and use terms like; SIL (Safety Integrity Level), PL (Performance
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Monday, March 26, 2007 3:17 PM

Did anyone notice that we are about to enter a new paradigm in safety?

Did anyone notice that we are about to enter a new paradigm in safety? I am fortunate enough to be on a committee that writes changes to regulations. The committee is a great group of people to work with, and we try very hard to make sure the regulations
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