DIN EN 12101-7:2011-08

This European Standard applies to smoke control duct sections, placed on the market and intended to operate as part of a pressure differential system or smoke and heat exhaust system. This standard specifies requirements and gives reference to the test methods defined for smoke control duct sections and their associated components (for example, hangers and other items proven at the time of testing), which are intended to be installed in such systems in buildings. It also provides for the evaluation of conformity of the products to the requirements of this standard; furthermore, marking and information on installation and maintenance of these products are given. This European Standard contains the basic performance and requirements for smoke control duct sections, which are to be used in conjunction with pressure differential systems and smoke and heat control systems. They may also be used to pressurise when gas extinguishing systems are used. Particular reference is required to EN 1366-8 and EN 1366-9, which define the fire resistance testing associated with these products and EN 13501-4, which provides details on their fire resistance classification. In addition to the prevention of transmission of smoke and combustion products from a fire zone, smoke control duct sections are utilised to contain the spillage of other harmful and toxic extinguishing gases from the affected area, and for the control of pressurising and excess air relief within pressurisation systems. Smoke control systems are designed to fulfil three basic functions. These are: a) the extraction of smoke from a single fire compartment to the outside of the building; b) the extraction of smoke from fire compartments of a building, using a SHEVS connected to one or more fire compartments. The smoke control duct may or may not pass through other compartments of the building to reach the outside of the building; c) the use of pressurisation to maintain smoke free clear areas. Smoke control ducts are commonly used in smoke and heat control systems. They may serve single compartments or a number of different fire compartments. The system may be exclusively dedicated to smoke extraction or possibly a combined environmental ventilation/smoke extraction. The committee responsible for this standard is NA 005-52-32 AA "Rauch- und Wärmefreihaltung (Spiegelausschuss von CEN/TC 191/SC 1 und ISO/TC 21/SC 11 sowie zu Teilbereichen von CEN/TC 127/WG 7)" ("Smoke and heat control systems (Mirror Committee of CEN/TC 191/SC 1 and ISO/TC 21/SC 11 and of parts of CEN/TC 127/WG 7)") at DIN.