There is one ANSI/ESD S20.20-2007 technical item to be aware of when installing a new floor.. Flooring per Table 3, the required limit is < 1 x 10E9 ohms tested per ANSI/ESD S7.1 or ESD TR53 (Compliance Verification). However, Flooring/Footwear is per Table 2 is to be < 3.5 x 10E7 ohms. So if you plan to ground personnel via a Flooring/Footwear System, that flooring should be something like < 1 x 10E6 ohms. "For standing operations, personnel shall be grounded via a wrist strap system or by a flooring/footwear system. When a flooring-footwear system is used, one of the two following conditions shall be met: A. When the total resistance of the system (from the person, through the footwear and flooring to the grounding / equipotential bonding system) is less than 3.5 x 10E7 ohms, Method 1 shall be followed (see Table 2). B. When the total resistance of the system (from the person, through the footwear and flooring to the grounding / equipotential bonding system) is greater than 3.5 x 10E7 ohms and less than 1 x 10E9 ohms, Method 2 shall be followed (see Table 2 which includes < 100 volt Product Qualification test per ESD STM97.2 Floor Materials and Footwear-Voltage Measurement in Combination with a Person)." [ANSI/ESD S20.20-2007 section 8.2] Gene Felder [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Wednesday, July 22, 2009 1:41 PM To: [log in to unmask] Subject: Re: [TN] DOP in ESD flooring Not sure about the DOP issue, but before you jump in and commit to a permanent flooring, you may wish to look at the products called Tekstil and Sigaway. http://www.tekstilconcepts.com/products/adhesives/adh-electronic.shtml. The Sigaway underweave with the re-usable Tekstil sheet or tile flooring is an excellent choice, especially in an area already being used for production. I first saw this product being used at Medtronics, at IBM in New York and Rochester, Mn, and at Boston Scientific here in Minnesota. After reviewing the tribocharge testing results and discussing the wear characteristics with the ESD engineers at these companies, we installed this product in a small area in what used to be Pemstar in Rochester, now Benchmark. It was strongly recommended to us by the other engineers using it, and I found that it was an excellent product when I had it installed. It will cost about 75% of the cost of a permanent epoxy-tile floor. You do not need to move equipment or people out of the area during installation; it can be installed without interrupting production (usually a major cost saver). Best of all, the Tekstil tile can be removed from the Sigaway backing and re-used or moved to a different location and re-installed on new Sigaway backing later if so desired. The risk with the epoxy-tile floor is that if the installation is not done perfectly (cured too long or too short), there are "dead spots" with reduced drain characteristics, and there is nothing you can do to fix it. Also, when you eventually leave the building or the area, you leave the floor behind. It cannot be pulled up. I had this flooring installed in two other plants after leaving Pemstar, and they still love it, no negative feedback whatsoever. It looks great and wears very well. No, I own no stock in this product. But I do not hesitate to show others what has worked for well for me, and the portability or dynamic nature of this flooring has proven to be a big advantage. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bruce Tostevin Sent: Wednesday, July 22, 2009 2:41 PM To: [log in to unmask] Subject: [TN] DOP in ESD flooring Hi All, We're preparing to install thousands of square feet of ESD flooring in a new manufacturing space and have different vendors talking to us about tiles which are, or are not - DOP FREE. A quick search tells us that DOP is Dioctyl phthalate, a widely used plasticizer used in everything from plastic buckets to foods. Questions: How great a consideration is it that ESD flooring has or does not have DOP additives? Is it a long term health concern, subject to any outgassing, leaching, etc. Does DOP improve the ESD qualities or longevity of the flooring compared to flooring that does not contain it? Any help would be much appreciated, Thank you, Bruce Tostevin Benchmark Electronics Hudson, New Hampshire --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------