So the word "conductive" is the same as "grounded". How then can the steel deck of craftcarrier be grounded? There is only water around./Ingemar "CONDUCTIVE" is used only in ammunition and fireworks factories, explosive compounds generally ; otherwise with powered equipment on the floor it can kill . Dissipative vinyl would be best way to go ; The self dissipating(with some humidity in the air) paint on concrete does not last in traffic spots more than couple of months . Bare concrete is neutral, but dusty; sealed with epoxy is static generating , not dissipating . Doug, the archives are full of ESDAssociation references ; which I'd find more practical than BS or DIN, you can get them on disk as well . Repeating myself again : make sure you have 1Mohm resistor somewhere between ground and grounded . There is a legal difference between conductive and dissipative surface when it comes to accidents ; and even ESDA standards underline the safety as a logical PRIORITY: for example whereas SSteel cabinet covers are normally grounded direct ; in instances of working with power equipment for example on SSteel bench ; that bench should be grounded indirect (with resistor in the path) . ESD's grounding does have similar character as CO2 versus CO ; TOO simple and common perceptions can be deadly in certain circumstances without lateral thought . Similar to those having gas heaters not flued outside . Get the standards Doug, they're absolutely essential; this is one of few fields where "common sense" is not desirable . Paul Klasek ResMed ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################