EN 12101-6:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Smoke and heat control systems - Part 6: Specification for pressure differential systems - Kits2SUHPDSystemes pour le contrôle des fumées et de la chaleur - Partie 6: Spécifications relatives aux systemes a différentiel de pression - KitsRauch- und Wärmefreihaltung - Teil 6: Festlegungen für Differenzdrucksysteme - BausätzeTa slovenski standard je istoveten z:EN 12101-6:2005SIST EN 12101-6:2005en13.220.20ICS:SLOVENSKI
STANDARDSIST EN 12101-6:200501-september-2005

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12101-6June 2005ICS 13.220.99English versionSmoke and heat control systems - Part 6: Specification forpressure differential systems - KitsSystèmes pour le contrôle des fumées et de la chaleur -Partie 6: Spécifications pour les systèmes à différentiel depression - KitsAnlagen zur Kontrolle von Rauch- und Wärmesströmungen- Teil 6: Anforderung an Differenzdrucksysteme - BausätzeThis European Standard was approved by CEN on 17 January 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12101-6:2005: E

Design recommendations.80 Annex B (informative)
Solutions for inability to obtain design pressure differential.92 Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or other provisions of the Construction Products Directive.93 Bibliography.98

0 Introduction 0.1 Smoke movement in the building This document covers information and requirements on the design, calculation methods, installation and testing of systems intended to limit the spread of smoke by means of pressure differentials. Pressure differential systems can be achieved by two methods: i) pressurization – maintaining a positive pressure within the protected spaces (see Figure 1a), or ii) depressurization – removing hot gases from the fire zone at a lower pressure than the adjacent protected space (see Figure 1b).

Key 1 Outside 2 Pressurized space 3 Overpressure relief 4 External leakage 5 Fire zone 6 Air release vents 7 Air intake 8 Supply fan 9 Supply ductwork Figure 1 a) — Examples of pressurization and depressurization systems

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Key 1 Stair 2 Lobby 3 Accommodation (DP Depressurized space) 4 Exhaust (Depressurize) 5 Leakage path through doors etc. 6 Replacement air 7 Fire-resisting construction Figure 1 b) — Example of a depressurization system – basements or other spaces with no external windows In the event of fire, the smoke produced follows a pattern of movement arising from the following main driving forces. Buoyancy experienced by hot gases on the fire storey. Within the fire zone, smoke produced by the fire experiences a buoyancy force owing to its reduced density. In a building this can result in upwards smoke movement between storeys if leakage paths exist to the storey above. In addition, this buoyancy can cause smoke to spread through leakage paths in vertical barriers between rooms, e.g. doors, walls, partitions. The pressure differential typically causes smoke and hot gases to leak out of gaps at the top of a door and cool air to be drawn in through gaps at the bottom. Thermal expansion of hot gases in the fire zone. Fire induced expansion of gases can result in a build up of pressure, accompanied by a flow of hot gases out of the compartment. However, in most cases the initial expansion forces may dissipate quickly and may be ignored. Stack effect throughout the building. In cold ambient conditions, the air in a building is generally warmer and less dense than the external air. The buoyancy of the warm air causes it to rise within vertical shafts in the
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