1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 2: Design, construction and maintenanceThe European Standard EN 12416-2:2001, incorporating am
2、endment A1:2007, has the status of a British StandardICS 13.220.10Fixed firefighting systems Powder systems BRITISH STANDARDBS EN 12416-2:2001Incorporating amendment no. 1BS EN 12416-2:2001This British Standard was published under the authority of the Standards Committee and comes into effect on 15
3、August 2001 BSI 2007ISBN 978 0 580 60200 9This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd
4、. No. Date Comments17362 28 September 2007 Implementation of CEN amendment A1:2007request to its secretary.EN 12416-2 is a candidate “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M/109, Fire alarm/detection, fixed firefighting, fire a
5、nd smoke control and explosion suppression products, given under the EU Construction Products Directive (89/106/EEC), and intended to lead to CE marking. The date of applicability of EN 12416-2 as a “harmonized” European Standard, i.e. the date after which this standard may be used for CE marking pu
6、rposes, is subject to an announcement in the Official Journal of the European Communities.National forewordThis British Standard is the UK implementation of EN 12416-2:2001, incorporating amendment A1:2007. It supersedes BS 5306-7:1998 which is withdrawn.The UK participation in its preparation was e
7、ntrusted by Technical Committee FSH/18, Fixed firefighting systems, to Subcommittee FSH/18/8, Powder systems.A list of organizations represented on this subcommittee can be obtained on EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12416-2:2001+A1 June 2007 ICS 13.220.20 Supersedes EN 12416-2:
8、2001English Version Fixed firefighting systems - 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:
9、 Planung, Einbau und Wartung This European Standard 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 na
10、tional standard without any alteration. Up-to-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 i
11、n any other language made by translation under 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
12、, Estonia, Finland, France, Germany, Greece, 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 NORMALISATIO
13、N EUROPISCHES KOMITEE FR NORMUNG Management Centre: 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
14、Scope .4 2 Normative references.4 3 Terms and 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
15、Control and release of powder extinguishing systems.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 a
16、pplication systems20 Annex C (informative) Minimum 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 he
17、ld by BSI. This document shall be given the status 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
18、 CEN on 2007-05-16. This document supersedes 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: - Pa
19、rt 1: Requirements and test methods for components - 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 s
20、ystems (EN 12259 and EN 12845); c) smoke control 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 f
21、ollowing countries are bound to implement this 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,
22、Slovenia, Spain, Sweden, Switzerland and United 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 t
23、he following: a) Flammable or combustible liquids 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 c
24、ould reach all burning surfaces in the event 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 i
25、s a risk of deep seated or burrowing fires which 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
26、 excess of 50 %, deposits will be formed which 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 whic
27、h may take place in the presence of moisture. 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;
28、 expellant gas unit with mechanical and/or electrical 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
29、 for the design, construction and maintenance 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 c
30、overs systems which are suitable for general 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 moni
31、tor systems, nor areas with a risk of explosion, 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
32、 incorporates by dated or undated reference, 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 thi
33、s European Standard only when incorporated in 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
34、- Part 14: Guidelines for planning, design, installation, 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,
35、PN designated !EN 12094-9“, Fixed firefighting 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+A
36、1:2007 (E)EN 25923, Fire protection - Fire extinguishing 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
37、as extinguishing media 3.2 discharge time time 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 powd
38、er system “ 4 Expellant gas 4.1 The expellant 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
39、additional expellant gas quantity shall be provided 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 doe
40、s not exceed 5 %Vol. in the protected enclosure. 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
41、sodium bicarbonate.“ If other types of powder 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,
42、and the production of gas will increase pressure 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
43、 it is then recycled the powder may eventually 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
44、“. The components used in the powder system shall 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
45、 compatibility of the complete system. A typical 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 valv
46、e with pneumatic drive 3 Pressure gauge A 21 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 conta
47、iner 26 Flushing valve 9 Flexible connector 27 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 Contro
48、l panel and interface 16 Non-return valve 34 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
49、(internal) Alarm device (external) Alarm device 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 alarm
