Good attachments, Rich! A likely future source will be ISO/TR 21260. Expected publication date has already slipped. Here's a look at it from Doug Nix: https://machinerysafety101.com/2019/05/23/forces-people-and-injuries-how-hard-is-too-hard/ Mike
> On 11/05/2024 2:39 PM CST Richard Nute <[email protected]> wrote: > > > > > > > > Hi Brian: > > > > Here are a couple of documents that may help. Consider safety requirements > for robots. > > > > For some reason, until robots, standards committees have not addressed > equipment kinetic energy limits based on injury causation. > > > > Enjoy, > > Rich > > > > > > From: Brian Kunde <[email protected]> > Sent: Tuesday, November 5, 2024 7:01 AM > To: [email protected] > Subject: [PSES] Moderate or Serious Hazards, Severity of Injury > > > > We evaluate the safety of Laboratory Equipment by applying the IEC/EN/UL > 61010-1 safety standard. For equipment that has accessable moving parts, such > as sample loaders, we apply section 7.3 "Moving Parts". Under 7.3.4, it > states, > > * " The physical levels specified below are not considered to be hazardous." > * " The maximum tolerable continuous contact pressure is 50 N/cm2 , with a > maximum force of 150 N. > > > > So for continuous contact pressures greater than 50 N/cm2, we have to apply > the Risk Assessment in section 7.3.3. > > > > The First step in the Risk Assessment is to define the Severity of the hazard > or injury. You have two choices; Moderate and Serious. The standard does > attempt to define the potential injury, but this is very subjective. How do > you test for a dismembered body part? My Engineers want numbers, not > guesswork. > > > > I was hoping there are numbers, such as a Contact Pressure that would draw a > line between Moderate and Serious. For pinch, crush, and maybe shear > hazards, there should be a way to come up with a N/cm2 number or test that > can make this determination. Are there such numbers, rules of thumb, > industry standards, that would better define the difference? Having > something like this would really help. > > > > Thanks to all, > > The Other Brian > > > > > --------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > [email protected] > > All emc-pstc postings are archived and searchable on the web at: > https://www.mail-archive.com/[email protected]/ > > > > Website: https://ewh.ieee.org/soc/pses/ https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) https://ewh.ieee.org/soc/pses/list.html > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: [email protected] mailto:[email protected] > Rick Linford at: [email protected] mailto:[email protected] > > For policy questions, send mail to: > Jim Bacher at: [email protected] mailto:[email protected] > > > --------------------------------------------- > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
