1、BRITISH STANDARD Fixed firefighting systems - Powder systems - Part 2: Design, construction and maintenance The European Standard EN 12416-2:2001 has the status of a British Standard ICs 13.220.10 BS EN 124 16-2: 200 1 O NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12
2、416-2:2001 National foreword This British Standard, having been prepared under the direction of the Health and Environment Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 O BSI 07-2001 This British Standard is the official Englis
3、h language version of EN 12416-2:2001. EN 12416-2 is a candidate “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M109, Fire alarm/detection, fixed firefighting, fire and smoke control and explosion suppression products, given under the
4、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 purposes, is subject to an announcement in the Official Journal of the
5、European Communities. EN 12416-2 is the subject of transitional arrangements agreed under the Commission mandate. The Member States have agreed a nominal transition period for the co-existence of EN 12416-2 and their corresponding national standard(s). It is intended that this period will comprise a
6、 nominal nine month period during which any required changes to national regulations are to be made, followed by a further 12 month period for the implementation of CE marking. At the end of this co-existence period, the national standard+) will be withdrawn. In the UK, the corresponding national st
7、andard is: - BS 5306-7:1988, Fire extinguishing installations and equipment on premises - Part 7: Specification for powder systems; and based on this nominal transition period of 21 months, BS 5306-7:1988 will be withdrawn by March 2003. NOTE This date is approximate. Users of this standard should c
8、ontact BSI Customer Services for confirmation of withdrawal. The UK participation in its preparation was entrusted by Technical Committee FSH118, Fixed firefighting systems, to Subcommittee FSH/18/8, Powder systems, which has the responsibility to: - - aid enquirers to understand the text; present t
9、o the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on
10、request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility
11、of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
12、. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 36, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. /Date
13、I Comments ISBN O 580 37107 7 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM a EN 12416-2 June 2001 ICs 13.220.20 English version Fixed firefighting systems - Powder systems - Part 2: Design, con st ruct ion and ma in te na n ce Installations fixes de lutte contre lincendie - Systmes dextinction
14、poudre - Partie 2: Conception, construction et maintenance Ortsfeste Brandbekmpfungsanlagen - Pulverlschanlagen - Teil 2: Planung, Einbau und Wartung This European Standard was approved by CEN on 2 May 2001. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate th
15、e conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in t
16、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Au
17、stria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland. Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMITE EUROPEEN DE NORMALISATION Managem
18、ent Centre: rue de Stassart, 36 8-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12416-2:2001 E rn DCI .inn4 n7 Page 2 EN 12416-212001 Contents Foreword 3 Introduction . 3 1 Scope . 4 2 Normative references .
19、4 3 Terms and definitions . 5 4 Expellant gas 5 5 Extinguishing powder . 5 6 Components . 5 7 Reserve quantity 8 9 Safety precautions 8 11 13 Pipework design . 11 14 Evaluation of characteristics 16 8 Location of extinguishing powder container and expellant gas container 8 1 O Total flooding systems
20、 8 Local application systems 9 12 Control and release of powder extinguishing systems . 10 15 Documentation. inspection and maintenance 16 16 Evaluation of conformity . 18 Annex A (informative) Example calculations for local application system . surface fire 19 Annex B (informative) Example calculat
21、ions for local application systems 20 Annex C (informative) Minimum design conditions for powder based on sodium bicarbonate 25 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive 29 Bibliography 36 O BSI 2001-07 Page 3 EN 1241
22、6-22001 This European Standard has been prepared by Technical Committee CEN/TC 191, Fixed firefighting systems, the Secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lates
23、t by December 2001, and conflicting national standards shall be withdrawn at the latest by December 2001. This European Standard has the general title, Fixed firefighting systems - Powder systems, and consists of the following two parts: - Pari I: Requirements and test methods for components - Pari
24、2: Design, construction and maintenance This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directives, see informative Annex ZA, whi
25、ch is an integral part of this standard. 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 control systems (EN 121 O1 ); d
26、) explosion protection systems (EN 26184); e) foam systems (EN 13565) f) hydrant and hose reel systems (EN 671-2); g) semi-rigid hose systems (EN 671-1); h) water spray systems According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound
27、 to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Introduction It has been assumed in the preparation of this Standa
28、rd 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 liquids and combustible gases; and b) Combustible solids having burning character
29、istics 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 of a fire. Powder extinguishing systems shall not be used to provide protectio
30、n for the following: d) Chemicals containing their own oxygen supply such as cellulose nitrate; O O BSI 2001-07 Page 4 EN 1241 6-2:2001 e) Combustibles arranged in such a way that there is a risk of deep seated or burrowing fires which the extinguishant would not be able to reach; ABC powder should
31、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 which can be corrosive, conductive and difficult to remove. NOTE 1 Powd
32、er, when discharged, will dnf 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. NOTE 2 The extinguishing of uncontrolled discharge of flammable liqu
33、ids or combustible gases may result in a subsequent explosion. Powder systems can consist of the following kits (see Figure 1): - KIT 1 : powder container unit including pressure regulator; - KIT 2: expellant gas unit with mechanical and/or electrical delay system; - KIT 3: actuation and control sys
34、tem (manual or automatic release); - KIT 4: distribution header with selector valves assembly; - KIT 5: nozzles for total flooding or local application. - KIT 6: kits for complete powder systems 1 Scope This European Standard specifies requirements and gives recommendations for the design, construct
35、ion and maintenance of kits covering components of powder fire extinguishing systems which discharge powder from a container, or centrally grouped containers, through nozzles by means of expellant gas in accordance with EN 1241 6-1 :2001 and the relevant part of EN 54 where required. This European s
36、tandard covers systems which are suitable for general use in buildings and other construction works as well as outdoor hazards. This standard does not cover stored pressure systems or pre-engineered systems up to 150 kg of the extinguishing media quantity, powder hose lines and monitor systems, nor
37、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 incorporates by d
38、ated 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 this European Standar
39、d 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 prEN 54-1 4:1996, Fire detection and fire alarm systems - Pari 14: Guide
40、lines for planning, design, installation, commissioning, use and maintenance EN 615, Fire protection - Fim 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 prE
41、N 12094-9:1999, 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 EN 25923, Fire protection - Fir
42、e extinguishing media - Carbon dioxide (IS0 5923:1989) EN IS0 9000 (all parts), Quality management and quality assurance standards O BSI 2001-07 Page 5 EN 12416-212001 Gas Air Argon CO2 Helium Nitroaen 3 Terms and definitions O Maximum water content % 0,006 0,006 0,015 0,006 0.006 For the purposes o
43、f this Standard the terms and definitions of EN 12416-1:2001 and the following apply: 3.1 powder system kit set of components which, when installed, form the complete or part of a powder system 4 Expellant gas 4.1 The expellant gas shall be one of the gases listed in table 1. The quantity of expella
44、nt gas shall be calculated for the most hydraulically unfavourable flooding zone such that the required powder quantity is discharged in at least the minimum discharge time and an additional expellant gas quantity shall be provided to empty the powder container and to allow the distribution pipe to
45、be flushed at the working pressure for a period of at least 1 min. 4.2 When using CO2 as expellant gas the system shall be carefully designed to ensure that the CO2 concentration does not exceed 5 %Vol. in the protected enclosure. CO2 shall be in accordance with EN 25923. Table 1 - Expellant gases .
46、 5 Extinguishing powder This Standard is based on the use of sodium bicarbonate powder. 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 61 5. WARNING 1 The mix
47、ing of different types of powder (ABC and BC) may result in caking, 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 h
48、ave previously been contaminated, and may have absorbed moisture. If it is then recycled the powder may eventually become lumpy, and interrupt the flow of powder when used on a fire. 6 Components Mechanical components shall be in accordance with EN 12416-1:2001 and electrical components shall be in
49、accordance with the relevant part of EN 54 or, in its absence, an appropriate specification valid in the place of use of the kit. The components used in the powder system shall be compatible. The installer shall declare and document the compatibility in accordance with EN 12416-1:2001, clause 12. If components are not delivered by a single manufacturer, a function test without powder discharge shall be camed out in order to confirm the 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 pow
