Hi Brian,
My interpretation of that section is that the pressure would be calculated based on the dimensions of the contact area of the moving part. I.e. if the part is sharp or comes to a point, it will exert more pressure, and cause more harm than a blunt object. As for a sheer hazard, I would revert to Table 12. I always liked the #2 pencil test. If you break it, you’re looking at a severe hazard. If not it is more than likely moderate. From there the rest of the risk analysis is pretty simple. Paul *From:* Kunde, Brian [mailto:[email protected]] *Sent:* Wednesday, October 01, 2014 1:35 PM *To:* [email protected] *Subject:* [PSES] Body Contact Areas I’m trying to determine if a moving part is hazardous or not. According to IEC/EN 61010-1 section 7.3.4, Forces less than those listed below are considered Non-Hazardous: • Contact pressure of 50 N/cm² with a maximum force of 150 N. • For body contact areas greater than 3 cm² a temporary force of 250 N is allowed for no more than 0.75 seconds. To determine “Contact pressure” I must take the Max Force (which I can measure) and divide it by the “Body Contact Area” in cm². But how do I know what my body contact area is for a finger tip, entire finger, or a hand? Are there standard values that are used in industry for these calculations? Are there values used for arm, head, foot, etc.? How about if the moving part creates a Sheer hazard? How is the Body Contact Area determined in this case? Thanks for any advice on this topic. The Other Brian ------------------------------ *LECO Corporation Notice:* This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- 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: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- 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: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
