[log in to unmask] (DAVY.J.G-) Wrote: | | Dave Hillman asked: | | "How have other electronics manufacturers solved the issue of | having | the fabric on the operator's chairs not generate a static | charge? We | are finding that a small charge is building up on the chair | seats." | | Kevin Seay of Northrop Grumman ESSD replies: | | We purchased ESD chairs. We typically do not check seats for | static | build up because the operators are grounded through wrist | straps. | Static charge on a chair is no different than a charge on shoes | or any | other part of an operator's clothing. The important issue is | wrist | strap grounding. | | Gordon Davy ESD protection must be designed specifically for the type of environment present in your assembly shop. Each shop is different but the most important factor is the sensitivity of the components being installed. You must design your ESD protection for the most sensitive component involved in the assembly process. If you are experiencing failures related to ESD and are looking at chairs as being the culprit, I suspect you are installing (or handling) some highly sensitive components. Generally (and without knowing the details of your requirements), you can provide sufficient ESD protection for most situations with an ESD approved work surface, an ESD approved wrist strap, and an air ionizer. If these products don't provide sufficient protection, contact the ESD association at 7902 Turin Rd. Ste 4, Rome NY 13440-2069 Tel: (315)339-6937 or visit their website at www.eosesd.org. Eric Blazi Avionics Manufacturing Robins AFB, Ga *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************