1、September 2007DEUTSCHE NORM English price group 13No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.220.20!$H|“137898
2、8www.din.deDDIN EN 12416-2Fixed firefighting systems Powder systems Part 2: Design, construction and maintenance (includes AmendmentA1:2007)English version of DIN EN 12416-2:2007-09Ortsfeste Brandbekmpfungsanlagen Pulverlschanlagen Teil 2: Planung, Einbau und Wartung (enthlt nderung A1:2007)Englisch
3、e Fassung DIN EN 12416-2:2007-09SupersedesDIN EN 12416-2:2001-12www.beuth.deDocuemnt comprises 31 pages 11.07DIN EN 12416-2:2007-09 2 National foreword This standard has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems” (Secretariat: BSI, United Kingdom). The responsible G
4、erman body involved in its preparation was the Normenausschuss Feuerwehrwesen (Fire Fighting and Fire Protection Standards Committee), Technical Committee NA 031-03-02 AA Schaum- und Pulverlschanlagen. Amendments This standard differs from DIN EN 12416-2:2001-12 as follows: a) Amendment A1:2007 has
5、been incorporated (see items b) to j). b) The standard no longer includes a reference to Mandate M/109 and to the EU Construction Products Directive. c) Throughout the text, units and individual elements of powder systems are no longer referred to as “kits” but as “components”. d) References have be
6、en updated. e) The terminology has been brought into line with the revised text in clause 1. f) Requirements for pipe couplings have been specified. g) Figure 5 has been deleted. h) Clause 14 has been deleted. i) Specifications for conformity evaluation have been replaced by requirements for complia
7、nce with this standard. j) The standard has been editorially revised. Previous editions DIN 14492: 1965-06, 1981-04 DIN EN 12416-2: 2001-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12416-2:2001+A1 June 2007 ICS 13.220.20 Supersedes EN 12416-2:2001English Version Fixed firefighting system
8、s - Powder systems - Part 2: Design, construction and maintenance Installations fixes de lutte contre lincendie - Systmes dextinction poudre - Partie 2: Conception, construction et maintenance Ortsfeste Brandbekmpfungsanlagen - Pulverlschanlagen - Teil 2: Planung, Einbau und Wartung This European St
9、andard was approved by CEN on 2 May 2001 and includes Amendment 1 approved by CEN on 16 May 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to
10、-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation unde
11、r the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
12、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management C
13、entre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12416-2:2001+A1:2007: EEN 12416-2:2001+A1:2007 (E) 2 Contents Foreword 3 Introduction 3 1 Scope .4 2 Normative references.4 3 Terms and
14、 definitions.5 4 Expellant gas5 5 Extinguishing powder.5 6 Components.6 7 Reserve quantity 9 8 Location of extinguishing powder container and expellant gas container9 9 Safety precautions .9 10 Total flooding systems .9 11 Local application systems 10 12 Control and release of powder extinguishing s
15、ystems.11 13 Pipework design.12 14 Documentation, inspection and maintenance 17 15 Evaluation of conformity.18 Annex A (informative) Example calculations for local application system - surface fire 19 Annex B (informative) Example calculations for local application systems20 Annex C (informative) Mi
16、nimum design conditions for powder based on sodium bicarbonate25 3 EN 12416-2:2001+A1:2007 (E)Foreword This document (EN 12416-2:2001+A1:2007) has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems“, the secretariat of which is held by BSI. This document shall be given the s
17、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007 and conflicting national standards shall be withdrawn at the latest by December 2007. This document includes Amendment 1 approved by CEN on 2007-05-16. This document supersedes
18、EN 12416-2:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This European Standard has the general title “Fixed firefighting systems - Powder systems“ and consists of the following two parts: - Part 1: Requirements and test methods for compo
19、nents - Part 2: Design, construction and maintenance !deleted text“ Annexes A to C are informative annexes. This European standard is included in a series of European Standards planned to cover also: a) gas extinguishing systems (EN 12094); b) sprinkler systems (EN 12259 and EN 12845); c) smoke cont
20、rol systems (EN 12101); d) explosion protection systems (EN 26184); e) foam systems (EN 13565); !f) hose systems (EN 671); g) water spray systems (EN 14816).“ According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement thi
21、s European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and Unit
22、ed Kingdom. Introduction It has been assumed in the preparation of this Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. Risks which can be protected using powder extinguishing systems include the following: a) Flammable or combustible liq
23、uids and combustible gases; and b) Combustible solids having burning characteristics similar to naphthalene and pitch, which melt when involved in a fire; and c) Combustibles such as wood, paper, or cloth arranged in such a way that powder extinguishant could reach all burning surfaces in the event
24、of a fire. Powder extinguishing systems shall not be used to provide protection for the following: d) Chemicals containing their own oxygen supply such as cellulose nitrate; EN 12416-2:2001+A1:2007 (E) 4 e) Combustibles arranged in such a way that there is a risk of deep seated or burrowing fires wh
25、ich the extinguishant would not be able to reach; ABC powder should not be used on machinery such as carding equipment in textile operations or delicate electrical equipment because, upon exposure to temperatures in excess of 120 C or relative humidity in excess of 50 %, deposits will be formed whic
26、h can be corrosive, conductive and difficult to remove. NOTE 1 Powder, when discharged, will drift from the immediate discharge area and settle on surrounding surfaces. Prompt cleaning will minimize possible staining or corrosion of certain materials which may take place in the presence of moisture.
27、 NOTE 2 The extinguishing of uncontrolled discharge of flammable liquids or combustible gases may result in a subsequent explosion. !Powder systems can consist of the following components (see Figure 1): powder container unit including pressure regulator; expellant gas unit with mechanical and/or el
28、ectrical delay system; actuation and control system (manual or automatic release); distribution header with selector valves assembly; nozzles for total flooding or local application.“ 1 Scope !This document specifies requirements and gives recommendations for the design, construction and maintenance
29、 of fixed fire extinguishing systems which discharge powder from a container, or centrally grouped containers, through nozzles by means of expellant gas in accordance with EN 12416-1 and the relevant part of EN 54 where required.“ This European standard covers systems which are suitable for general
30、use in buildings and other construction works as well as outdoor hazards. !This standard does not cover systems with permanently pressurized containers and pre-engineered systems up to 150 kg of the extinguishing media quantity, powder hose lines and monitor systems, nor areas with a risk of explosi
31、on, earthquake zones or extreme environmental conditions e.g. marine, offshore, mining or aircraft.“ This European standard does not apply to systems where there is a risk of class “D“ fires according to EN 2. 2 Normative references This European Standard incorporates by dated or undated reference,
32、provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in
33、 it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 54 (all relevant parts), Fire detection and fire alarm systems !CEN/TS 54-14“, Fire detection and fire alarm systems - Part 14: Guidelines for planning, design, i
34、nstallation, commissioning, use and maintenance EN 615, Fire protection - Fire extinguishing media - Specifications for powders (other than class D powders) EN 1092, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated !EN 12094-9“, Fixed firefightin
35、g systems - Components for gas extinguishing systems - Part 9: Requirements and test methods for special fire detectors EN 12416-1:2001, Fixed firefighting systems - Powder systems - Part 1: Requirements and test methods for components 5 EN 12416-2:2001+A1:2007 (E)EN 25923, Fire protection - Fire ex
36、tinguishing media - Carbon dioxide (ISO 5923:1989) !deleted text“ 3 Terms and definitions For the purposes of this Standard the terms and definitions of EN 12416-1:2001 and the following apply: 3.1 !powder system fixed installed system discharging powder as extinguishing media 3.2 discharge time tim
37、e period, during which the design quantity of extinguishing powder is discharged 3.3 rate of application specific mass of extinguishing media to extinguish a fire in the protected zone 3.4 protected zone area or enclosure which is extinguished by the powder system “ 4 Expellant gas 4.1 The expellant
38、 gas shall be one of the gases listed in table 1. The quantity of expellant gas shall be calculated for the most hydraulically unfavourable flooding zone such that the required powder quantity is discharged in at least the !maximum discharge time“ and an additional expellant gas quantity shall be pr
39、ovided to empty the powder container and to allow the distribution pipe to be flushed at the working pressure for a period of at least 1 min. 4.2 When using CO2as expellant gas the system shall be carefully designed to ensure that the CO2concentration does not exceed 5 %Vol. in the protected enclosu
40、re. CO2shall be in accordance with EN 25923. Table 1 - Expellant gases Gas Maximum water content % Air 0,006 Argon 0,006 CO20,015 Helium 0,006 Nitrogen 0,006 5 Extinguishing powder !This standard is applicable for the use of extinguishing powder based on sodium bicarbonate.“ If other types of powder
41、 are used, the complete design and calculation shall be modified proportionally to the relative efficiency of this powder. The powder shall be in accordance with EN 615. WARNING 1 The mixing of different types of powder (ABC and BC) may result in caking, and the production of gas will increase press
42、ure in the container to an unsafe level. Such increases in pressure have been known to cause containers to rupture, and to cause bodily injury and damage. WARNING 2 Recovered powder may have previously been contaminated, and may have absorbed moisture. If it is then recycled the powder may eventuall
43、y become lumpy, and interrupt the flow of powder when used on a fire. EN 12416-2:2001+A1:2007 (E) 6 6 Components !Mechanical components shall be in accordance with EN 12416-1 and electrical components shall be in accordance with the relevant part of EN 54“. The components used in the powder system s
44、hall be compatible. The installer shall declare and document the compatibility in accordance with !EN 12416-1“. If components are not delivered by a single manufacturer, a function test without powder discharge shall be carried out in order to confirm the compatibility of the complete system. A typi
45、cal arrangement of the components in a powder system is given in Figure 1 and a block diagram for powder extinguishing systems is given in Figure 2. 7 EN 12416-2:2001+A1:2007 (E)Key 1 Powder container 19 Drain connection 2 Fill opening 20 Main powder valve with pneumatic drive 3 Pressure gauge A 21
46、System test valve 4 Pressure regulator 22 Main isolating valve 5 Pressure gauge B 23 Solenoid valve 6 Expellant gas line 24 Control line for selector valve 7 Expellant gas container 25 Selector valve with pneumatic drive 8 Actuator for expellant gas container 26 Flushing valve 9 Flexible connector 2
47、7 Vent valve 10 Pilot container 28 Release control valve 11 Actuators for pilot container 29 Control line 12 Solenoid actuator 30 Pressure relief valve 13 Manual actuator 31 Powder nozzle 14 Delay device 32 Pipework 15 Drop weight with wire rope 33 Control panel and interface 16 Non-return valve 34
48、Fire detector 17 Expellant gas tube 35 Manual release 18 Powder diptube 36 Alarm device Figure 1 - Typical arrangement of components in a powder system EN 12416-2:2001+A1:2007 (E) 8 Figure 2 - Block diagram for powder extinguishing systems Alarm device B (internal) Alarm device (external) Alarm devi
49、ce A (internal) Control device Powder container Distribution pipework Selector valve Main pipework Nozzles * Compulsory in case of danger for people Compulsory Optional Actuator for expellant gas container valve Change over device for automatic and manual release Triggering deviceTime delay device* Shut down device for fans, blowers, enclosure sealing and operation equipmentManual triggering device Automatic fire sensor Emergency triggering device, including power supply, delay and alarmNon-electrical disable device Actuator for selector valve Non-electrical di
