ISO https://www.iso.org/obp/ui/#iso:std:iso-iec:guide:51:ed-3:v1:en defines safety very generally
3.14 safety - freedom from
risk (3.9) which is not tolerable
3.15 tolerable risk - level of
risk (3.9) that is accepted in a given context based on the current values of society
Note 1 to entry: For the purposes of this Guide, the terms "acceptable risk" and "tolerable risk" are considered to be synonymous.
3.9 risk - combination of the probability of occurrence of
harm (3.1) and the severity of that harm
I could not find anything as succinct from OSHA. Is anyone aware of a succinct US reference of relevance?
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Mitch Winkler P.E.(inactive), M.ASCE
Houston, TX
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Original Message:
Sent: 11-14-2025 09:14 AM
From: William McAnally
Subject: Difference between Safety and Risk Management
I like your 2022 comments. They are very much on target.
Can we distinguish safety as preventing harm to humans? Extend it to pets? Attractive megafauna?
Certainly safety should be treated as a risk management issue, but risk management also includes non-safety matters. Isn't it a systematic approach to limiting adverse consequences of events, where the adverse consequences may or may not involve human safety? For example, a sudden price spike in materials might cause a project to become unaffordable.
Bill Mc
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William McAnally Ph.D., P.E., BC.CE, BC.NE, F.ASCE
ENGINEER
Columbus MS
Original Message:
Sent: 11-04-2025 09:14 PM
From: Mitchell Winkler
Subject: Difference between Safety and Risk Management
Here is my view from 2022: https://collaborate.asce.org/professionaltopics/discussion/what-is-your-definition-of-safety. One might need to scroll down to find my post. I am still happy with my logic. Being careful not to be accused of confirmation bias, I came across this blog on LinkedIn https://www.linkedin.com/pulse/why-i-call-myself-riskologist-safety-professional-dr-garry-marling-u1a7c/ via a former colleague and found the message resonated with me.
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Mitch Winkler P.E.(inactive), M.ASCE
Houston, TX
Original Message:
Sent: 10-25-2025 10:11 AM
From: Mitchell Winkler
Subject: Difference between Safety and Risk Management
What's the community's view on this question
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Mitch Winkler P.E.(inactive), M.ASCE
Houston, TX
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