Machine Safety: ISO 13849-1 is mandatory for conformity to the Machinery Directive in Europe but in the USA?

Can this mandatory standard in Europe help U.S. safety efforts? ISO 13849-1 is titled – Safety of Machinery – Safety Related Parts of Control Systems – Part 1: General Principles for Design.

11/04/2013


What does a mandatory standard in Europe mean for domestic machine safety compliance here in the United States? ISO 13849-1 is titled – Safety of Machinery – Safety Related Parts of Control Systems – Part 1: General Principles for Design.

A few questions come to mind.

  1. Will OSHA ever require compliance to ISO 13849-1?
  2. Will a domestic standard (ANSI, NFPA, NEMA, S2, ASTM, etc.) require compliance to ISO 13849-1?
  3. Will an international standard ever trump a domestic standard here in the U.S.?
  4. Will the U.S. adopt the international hierarchy for machine safety compliance?

If anyone has some insight to these (or additional) questions please add your comments at bottom.

As I recall, when safety PLCs came to market (around 2002) U.S. manufacturers could follow the supplier’s manuals for proper application in the machine control system. And, as long as the manuals were followed, very little engineering was required to achieve safety functions. Most of the components were safety rated for Category B, 1, 2, 3, or 4, and to mitigate a Cat 3 hazard every component in that circuit needed to be rated Cat 3. At times control reliable circuits needed to be applied which required multiple components. All of this drove some level of increased safety and a byproduct – reduced unplanned machine downtime. Industry coined this approach to machine safety as “qualitative.”

Now, on stage left is ISO 13849-1. This standard uses a “quantitative” statistical analysis approach to actually engineer the safety-related parts of the control system (SRP/CS). In other words, a probabilistic determination regarding the reliability of components, devices, software, and circuitry of the SRP/CS over time. To be compliant with this standard, users need to become familiar with terms like: PL – performance level, DC – diagnostics coverage, CCF – common cause failure, MTTFd – mean time to fail dangerous, B10d – the number of cycle to which 10% of the components fail to dangerous, and many more. As with the previous paragraph it is assumed that this approach will drive some level of increased safety.

What just happened regarding the above two paragraphs? Did ISO 13849-1 subtly just pull the capability to develop compliant safety circuits from a major portion of U.S. manufacturers? How many manufacturers across the U.S. have the finances or employees capable of performing the quantitative requirements of this standard? How many U.S. machinery manufacturers (OEM) will comply with this standard for fear that OSHA will require compliance prior to a domestic shipment? Throughout my career I haven’t found one OEM who experienced an OSHA inspection where OSHA inspected the machine being manufactured.

In Europe it’s against the law to manufacture an unsafe machine.

So, will compliance to ISO 13849-1 in the U.S. be driven by the threat of liability? Or is there some other driver? How will our small end user manufacturers ever comply? Will these manufacturers consider purchasing a new machine from Europe that’s not compliant to U.S. Categories? What will European machine manufacturers do when a U.S. purchase order specifies U.S. safety standards and Category certified safety components in their SRP/CS?

Has this presented you with any new perspectives? Do you have some specific topic or interest that we could cover in future blog posts? Add your comments or thoughts to the discussion by submitting your ideas, experiences, and challenges in the comments section below.

Related articles:

Contact: http://www.jbtitus.com for “Solutions for Machine Safety”.



The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering subscribers. Vote now (if qualified)!
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
HMI effectiveness; Distributed I/O; Engineers' Choice Award finalists; System Integrator advice; Inside Machines
Women in engineering; Engineering Leaders Under 40; PID benefits and drawbacks; Ladder logic; Cloud computing
Robotic integration and cloud connections; SCADA and cybersecurity; Motor efficiency standards; Open- and closed-loop control; Augmented reality
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. As we know, PLCs aren’t the only option for making decisions in a control loop, but they are likely why you’re here.
This digital report explains how motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on how advancements in vision system designs, computing power, algorithms, optics, and communications are making machine vision more cost effective than ever before.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Control room technology innovation; Practical approaches to corrosion protection; Pipeline regulator revises quality programs
Cloud, mobility, and remote operations; SCADA and contextual mobility; Custom UPS empowering a secure pipeline
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering subscribers. Vote now (if qualified)!
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
HMI effectiveness; Distributed I/O; Engineers' Choice Award finalists; System Integrator advice; Inside Machines
Women in engineering; Engineering Leaders Under 40; PID benefits and drawbacks; Ladder logic; Cloud computing
Robotic integration and cloud connections; SCADA and cybersecurity; Motor efficiency standards; Open- and closed-loop control; Augmented reality
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. As we know, PLCs aren’t the only option for making decisions in a control loop, but they are likely why you’re here.
This digital report explains how motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on how advancements in vision system designs, computing power, algorithms, optics, and communications are making machine vision more cost effective than ever before.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Control room technology innovation; Practical approaches to corrosion protection; Pipeline regulator revises quality programs
Cloud, mobility, and remote operations; SCADA and contextual mobility; Custom UPS empowering a secure pipeline
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering subscribers. Vote now (if qualified)!
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
HMI effectiveness; Distributed I/O; Engineers' Choice Award finalists; System Integrator advice; Inside Machines
Women in engineering; Engineering Leaders Under 40; PID benefits and drawbacks; Ladder logic; Cloud computing
Robotic integration and cloud connections; SCADA and cybersecurity; Motor efficiency standards; Open- and closed-loop control; Augmented reality
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. As we know, PLCs aren’t the only option for making decisions in a control loop, but they are likely why you’re here.
This digital report explains how motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on how advancements in vision system designs, computing power, algorithms, optics, and communications are making machine vision more cost effective than ever before.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Control room technology innovation; Practical approaches to corrosion protection; Pipeline regulator revises quality programs
Cloud, mobility, and remote operations; SCADA and contextual mobility; Custom UPS empowering a secure pipeline
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me