All, ISO 14118 discusses the use of tamperproof screws when installing interlocking devices on guards. This is only one specific example of where this can be an effective safeguard against tampering by users. Maintenance personnel are another topic, since they would almost certainly have tools to remove the tamperproof hardware.
Doug Nix d...@ieee.org +1 (519) 729-5704 > On 6-Apr-19, at 16:27, Robert Johnson <john...@itesafety.com> wrote: > > I notice that IEC 62368 mentions tamper-proof screws in a couple places > (articles 0.8, 0.11), although not explicitly requiring them. It describes > tamper-proof screws as providing a supplemental safeguard against hazards. I > would take that to mean for level 3 hazards, for example mains terminals, > basic protection or other measures would ALSO be needed such as covers using > regular screws. What are the implications for mains plugs assembled with > slotted screws? > I have always assumed that requiring the use of a tool would provide > protection against access to level 3 hazards. Access to mains terminal > requirements seems to only require a tool per clause G.7.6.1. and V.1.1 > The standard uses the term “tamper-proof screw” without definition. Is it > slotted, Phillips, Torx, security Torx, Allen, hex, Robertson, or others > <https://en.wikipedia.org/wiki/List_of_screw_drives> ? > Are there examples where ordinary fasteners must be replaced with > tamper-proof ones? > > Bob Johnson > - > ---------------------------------------------------------------- > 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 > <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/ > <http://product-compliance.oc.ieee.org/> can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ <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 > <http://www.ieee-pses.org/listrules.html> > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org <mailto:sdoug...@ieee.org>> > 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://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 <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
