http://style.org/strouhalflight/
Have also used Strouhal number to calc air flow in non-circular plenum. Physics works. Brian -----Original Message----- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Wiseman, Joshua E Sent: Wednesday, November 14, 2012 1:57 PM To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] VTM-2 Rated Film - Proper Electrical Barrier Is that an European or African swallow? Josh -----Original Message----- From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Wednesday, November 14, 2012 2:41 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] VTM-2 Rated Film - Proper Electrical Barrier Yes, but what is the airspeed of an unladen swallow? The Other Brian -----Original Message----- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Brian Oconnell Sent: Wednesday, November 14, 2012 3:30 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] VTM-2 Rated Film - Proper Electrical Barrier Excellent point. And it (not the elderberry smell) was used at a PSES symposium session as one of the reasons to fire the conformity assessment body. There may be a time when the assessor is intractable and will offer only vague hand waves in lieu of any rationale. But first talk to a technical authority at the agency to verify that the requirement is capricious. "Your mother was a hamster and your father smelt of elderberries." -- Monty Python and the Holy Grail Brian -----Original Message----- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Peter Tarver Sent: Wednesday, November 14, 2012 12:02 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] VTM-2 Rated Film - Proper Electrical Barrier > From: Brian Oconnell > Sent: Tuesday, November 13, 2012 15:28 > > OHSA allows the recognized lab use of 'engineering judgment' and > reference to corporate policy for acceptance or rejection of > construction. And various instances of adjudication have allowed > internal lab 'policy' that would be in addition to, or in lieu of, a > normative reference from an ANSI safety standard. None of this effects the need for explanation, even if it's, "you're father smells of elderberries." There has to be a rationale even for a policy. Denial of sound engineering rationale casts a pall on the reputation of an NRTL and would be reason to move on. If the product is not intended exclusively for the workplace, OSHA's opinion is of no account. During prior employment, I applied similar to the stated OSHA position to a coffee percolator. The device would not heat up enough to allow normal operation (or to even warm water). The customer was told that the certification service would not be forthcoming, but I had to explain why. Whether it's considered a matter of fairness or a response to contracted services, some explanation is needed. Peter Tarver - ---------------------------------------------------------------- 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> ________________________________ 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 <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> - ---------------------------------------------------------------- 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> - ---------------------------------------------------------------- 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>
