All,

I have followed this discussion with interest, and I have a few  
comments.

1) ISO 14971 is scoped for risk assessment of medical devices and may  
not provide the guidance that is needed relative to this area of  
practice;
2) ISO 14121-1 and -2 are the industrial risk assessment standards and  
in my opinion provide a more easily generalizable approach to risk  
assessment, albeit one with a 'machinery' feel to it;
3) ISO 10218-1 is the new international standard for the industrial  
robot. It does not cover the application as yet, but it does provide  
for new features, such as programmable safety zones which are intended  
to replace hard stops and axis limit switches on these machines. The  
safety related parts of these robots, including the programmable limit  
controller, are typically qualified to ISO 13849-1 PLd or PLe, roughly  
equivalent to ISO 61508-1 SIL-2 or SIL-3. Pretty reliable for most  
applications. BTW, ISO 10218-1 has been adopted by ANSI as ANSI/RIA/ 
ISO 10218-1 and replaces Clause 4 of the venerable ANSI/RIA R15.06  
standard.
4) ISO 10218-2, currently in work, is rumoured to provide for  
interactive robotic applications where humans and robots work safely  
in the same environment without te need for barriers and interlocks.  
This standard is expected to be published sometime in the next 12  
months. I don't know if ANSI/RIA will adopt it once published.

Regarding Brian O'Connell's comment:

1. Areas of danger
2. Rate of motion
3. Human-prediction of motion

This is essentially a partial risk assessment model. Risk assessment  
normally is considered to include:

A) Hazard Analysis: including hazard identification and evaluation  
(figuring out the extent of the hurt);
B) Probability Analysis: including frequency of access to the hazard,  
exposure duration, avoidability of the hazard, exposure circumstances,  
probability of the hazardous event, training and expertise.

These together permit you to estimate the risk involved. The  
avoidability factor encompasses the rate of motion and the capability  
of a human to detect and predict the motion. The exposure  
circumstances might include how frequently a particular task needs to  
be done, as well as the environment in which the work is done.

The three main standards currently available for robotics are:
ISO 10218-X,
ANSI/RIA R15.06, and
CSA Z434

Unfortunately, the last two include 'risk assessment' tools that have  
holes that you could fly the space shuttle through. Apart from that  
they have some great information and should be considered in the work  
you are undertaking. Watch for the publication of ISO 10218-2!

-- 
Doug Nix, A.Sc.T.
IEEE PSES Toronto Chapter       
Toronto Section, Ontario, Canadad

[email protected]
mobile (519) 729-5704
fax (519) 653-1318

Find me LinkedIn at http://www.linkedin.com/in/dougnix

Fostering Technological Innovation and Excellence for the Benefit of  
Humanity.

On 6-May-10, at 14:42 , Robert Macy wrote:

> Ladies, Gentlemen,
>
> Safety from mobile robots operating within a non-technical group of  
> users
> are/will be of concern to agencies, companies, and individuals  
> involved in
> this industry. I've been tasked with seeking information about such  
> Safety
> Standards - find standards, contact organizations/individuals, etc.
>
> I know there exists a plethora of related industrial robotic  
> standards,
> but those standards seem like Class A versus Class B. Does anyone  
> know of,
> or is anyone pursuing, any "Class B" standards?
>
> Who at IEEE is responsible for these standards and would actively take
> part in creating/extending operational safety standards?
>
> Who within any country?
>
> Feel free to reply 'off line'
>
> Regards,
> Robert Macy, PE
>
> AJM Electronics
> 101 E San Fernando St., Ste 402
> San Jose, CA  95112
> tel: 408 982 7574
> cel: 408 286 3985
> fax: 408 297 9121
>  [email protected]
>
> -
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