Derek, You might check EN 61508 and whatever ISO standard is referenced for Risk Assessment. My guess is it will depend on the risk and the severity of that risk that you are trying to avoid.
Regards, Josh Joshua Wiseman Taylor Company A division of Carrier Commercial Refrigeration, Inc From: Derek Walton [mailto:lfresea...@aol.com] Sent: Tuesday, October 09, 2012 5:55 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Light curtains Hi All, I'm faced with helping a friend work through an OSHA finding that requires the fitting of light curtains on several machines in a metal fab shop. Several of these machines were never designed to have light curtains, but OSHA wants them. So... Can anyone point me to resources specifically regarding what the machine should do if the light curtain is activated by a hand etc. Is terminating power to anything making movement happen sufficient? I hope this is not off the list topic list..... Thanks, Derek Walton L F Research. - ---------------------------------------------------------------- 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 <emc-p...@ieee.org<mailto:emc-p...@ieee.org>> 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://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net<mailto:emcp...@radiusnorth.net>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>