Here’s another interesting one. In a previous job a Program Manager sees that an 18 chassis system (all shielded enclosures) is over the maximum weight budget (it’s mission equipment that goes on an aircraft). He orders the development team to remove a top cover from one chassis enclosure to help decrease system weight. The EMC team warns the PM that decision will cause the system to fail the EMC/EMI requirements during qualification testing but his order is carried out anyway. The system is tested and fails. PM eventually loses his job (but for a different reason not related to this decision).
Manny Barron EMC/EMI Engineer Test Lab Manager Friday, September 14, 2018, 9:03 AM -0700 from 00000061f3f32d0c-dmarc-requ...@ieee.org <00000061f3f32d0c-dmarc-requ...@ieee.org>: >James, Oh yes, I have another real life story. In dealing with the >compliance issues on a product I recommended that they run a pre-compliance >EMC check and the chief electrical engineer rebutted that it was so >straightforward that they would do that last, just before releasing the >product to marketing. His position was that this is basic engineering stuff >and any competent design engineer would get it right to begin with or a simple >fix would take care of it. With a little backpressure the pre-scan was done >and the product failed miserably. Needless to say, it took a number of trials >to get it all properly fixed to pass; the release date was missed and the >chief electrical engineer lost his job over it. So we see: lunacy runs both >ways. > >:>) br, Pete > >Peter E Perkins, PE >Principal Product Safety & Regulatory Affairs Consultant >PO Box 23427 >Tigard, ORe 97281-3427 > >503/452-1201 > >IEEE Life Fellow >p.perk...@ieee.org > >From: James Pawson (U3C) < ja...@unit3compliance.co.uk > >Sent: Friday, September 14, 2018 8:00 AM >To: EMC-PSTC@LISTSERV.IEEE.ORG >Subject: Re: [PSES] How to lose another million dollars > >Hi John, >Is this an actual true story? I’m lost for words... >James > >From: John Woodgate < j...@woodjohn.uk > >Sent: 14 September 2018 12:57 >To: EMC-PSTC@LISTSERV.IEEE.ORG >Subject: [PSES] How to lose another million dollars > >Prepare for sob story. Company X has implemented the sensible policy of making >the project leader internally responsible for EMC and safety compliance, i.e., >when the product is tested by the compliance experts, it passes or has only >minor defects. >So John Doe takes his engineering model, scheduled for production in 9 months >time to Compliance and asks for pre-compliance checks. No can do, is the >reply. Our new policy is that only products whose planned release date is 4 >months or less ahead can be checked. >Truly, nothing is fool-proof because Nature keeps producing more and more >ingenious fools. >-- >John Woodgate OOO-Own Opinions Only >J M Woodgate and Associates www.woodjohn.uk >Rayleigh, Essex UK >- >---------------------------------------------------------------- >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 > >- >---------------------------------------------------------------- >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 > - >---------------------------------------------------------------- >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 > - ---------------------------------------------------------------- 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>
