DIN CEN/TS 14972*DIN SPEC 91216:2011-09

This document specifies requirements and gives information on design, installation and testing and givescriteria for the acceptance of fixed landbased watermist systems for specific hazards and provides fire testprotocols for a variety of hazard groups.The requirements are not valid for watermist systems on ships, in aircraft, on vehicles and mobile fireappliances or for below ground systems in the mining industry.The requirements can be used as a guidance for other fixed firefighting systems, however, provided that anyspecific requirements for other firefighting supplies are taken into account.Aspects of watermist associated with explosion protection are beyond the scope of this document.As the fire test scenarios of this document apply to a group of similar applications, by analogy the successfulperformance of watermist systems also applies to that group, as defined in Annex A. Extrapolation is notcovered.The document is not intended to be used as a universal design manual of watermist, as different systemshave different characteristics and hence follow different design criteria to satisfy their duty requirements.In the absence of a generalized design method, it is the intent of this document that watermist systems arefull-scale fire tested and its system component evaluations are conducted by qualified testing laboratories.The full system acceptance requires the relevant fire test report, the component test report(s) as well asmanufacturer?s design, installation, operation and maintenance manual for the application.If the gas in the system is a significant factor for extinguishment/suppression, the relevant parts of EN 12094and EN 15004-1 are applicable.Firefighting systems in accordance with EN 12845 and water spray systems are not covered.