Chris, It is probably more important that your number falls somewhere near the average of what other similar products state, that way you don't stick out which could expose you to further scrutiny. Too bad the appendix isn't completely filled out with the suggested or average use periods by product type. While on this topic, has anyone found a label vendor selling stickers for the use period or the Chinese recycling marks? We're printing them in-house but an off the shelf label is generally less expensive. I've checked the web sites of the label vendors we use and also tried a search and came up empty. Dan
_____ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of James, Chris Sent: Friday, January 19, 2007 6:19 AM To: emc-p...@ieee.org Subject: China RoHS - EFUP number It would seem the final version of the “General Rule of EFUP for EIP” will provide some indicative figures to use for various types of EIP. However for now we are left with the draft guide available here: <<http://www..rohs-international.com/fi es//General_rule_of_Environment_Friendl _use_Period_of_Electronic_Information_Products.pdf <http://www.rohs-international.com/file /General_rule_of_Environment_Friendly_u e_Period_of_Electronic_Information_Products.pdf> >> The draft General Rule suggests the EFUP number is calculated thus: *************************************** ******************************************************* 4.3.2 Technical Life Method The formula to calculate EFUP by using product technical life: EFUP = Technical Life / (average daily working time x 365) (1) EFUP = Technical Life / (average daily working time x 365) x 125% (2) Formula (1) applies to EIP that can not be repaired; formula (2) applies to EIP that can be repaired. 4.3.3 Safe Use Period Method If the product has the Safe Use Period, should use the Safe Use Period as the EFUP. 4.3.4 Comparison Method The new EIP without defined technical life and safe use period should adopt the EFUP of same or similar category product as its EFUP. *************************************** ******************************************************** This now poses the question as to what is “the technical life”. From inference of condition (2) this could mean the MTBF, rather than how long one might expect the technology to remain current. To arrive at “15” would imply a MTBF of approx 4 years and daily use of 8hrs giving: (4x365x24/8x365)x1.25 = 12x1.25 = 15 There has been some suggestion not to use numbers over 15 or 20, but for professional products having MTBF’s greater than 20 years and not running 24/7 this would in fact push the EFUP figure above 60…………. Has anyone got any other input on this or know when the final “General Rule of EFUP for EIP” is going to be published?? Regards, Chris _____ This message (including any attachments) may contain confidential information intended for a specific individual and purpose. If you are not the intended recipient, delete this message. If you are not the intended recipient, disclosing, copying, distributing, or taking any action based on this message is strictly prohibited. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
