Full definition
National Fire Protection Association Standard 99 — Health Care Facilities Code — establishes requirements for electrical systems, medical gas/vacuum, HVAC, and other building systems in healthcare facilities. For industrial rubber and flooring: NFPA 99 Chapter 10 specifies that conductive flooring is required in anesthesia locations (where flammable anesthetic agents are used) to prevent static discharge ignition. Maximum floor-to-ground resistance: 1×10⁶ ohms (conductive classification per ANSI/ESD S7.1). Maximum body voltage generation: 100V. The flooring must be tested per NFPA 99 methodology (electrode resistance measurement from floor surface to ground). Conductive rubber flooring (carbon-loaded) or conductive vinyl flooring meets these requirements when properly installed with conductive adhesive over copper grounding strips connected to the building electrical ground. Although modern volatile anesthetic agents (sevoflurane, desflurane) are non-flammable and many healthcare facilities no longer require conductive flooring for anesthesia, NFPA 99 requirements still apply where flammable agents may be used. Per NFPA 99-2021. Related: ANSI/ESD S7.1 (floor materials testing), and ASTM F150 (electrical resistance of conductive flooring).