Machine Safety & Residual Risk

02/02/2010


Residual risk is a term used for the past several years referring to a level of risk for a given hazard after applying protective measures (risk reduction measures). ANSI B11.TR3; 2000, ANSI B11 - 2008, ANSI / ISO 12100-1:2007, ISO 14121:2007, …..to mention a few, all tend to be harmonized on this definition. However, tolerable risk and acceptable risk are two additional terms also in the mix. Tolerable risk is generally defined as that risk which is accepted for a given task and hazard combination [hazardous situation] after applying risk reduction measures. The extension of this process introduces acceptable risk as the level at which further risk reduction will not result in significant reduction in risk or that additional expenditure of resources will not result in significant advances towards increased safety.

In my opinion, the reality of this concept is that there is a very strong reluctance in industry to ever document two words in the same sentence - “risk” and “acceptable”. Residual risk, on the other hand, seems to imply that after risk reduction measures have been applied to a known hazard, some level of reduced risk still exists. It’s generally understood that it’s virtually impossible to drive risk to a zero value. With that said, does this remaining component of risk need to be “accepted”? Or, does it still need to be addresses? It’s kind of like the comparison to a zebra. Is a zebra white with black stripes or is it black with white stripes?

In the final analysis, how much does this level of granularity really matter? I believe that the goal is to achieve operator safety. So, shouldn’t we all follow the following steps?

  1. Perform a thorough risk assessment
  2. Identify the hazards
  3. Apply risk reduction measures
  4. Document the process

For more on Machine Safety visit: www.jbtitus.com

Posted by J.B. Titus on February 2, 2010



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
2016 Product of the Year; Diagnose bearing failures; Asset performance management; Testing dust collector performance measures
Safety for 18 years, warehouse maintenance tips, Ethernet and the IIoT, GAMS 2016 recap
2016 Engineering Leaders Under 40; Future vision: Where is manufacturing headed?; Electrical distribution, redefined
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Safety at every angle, Big Data's impact on operations, bridging the skills gap
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
Applying network redundancy; Overcoming loop tuning challenges; PID control and networks
Driving motor efficiency; Preventing arc flash in mission critical facilities; Integrating alternative power and existing electrical systems
Package boilers; Natural gas infrared heating; Thermal treasure; Standby generation; Natural gas supports green efforts

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role of plant safety and offers advice on best practices.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me