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1、BRITISH STANDARD BS EN 12416-2:2001 Incorporating amendment no. 1 Fixed firefighting systems Powder systems Part 2: Design, construction and maintenance The European Standard EN 12416-2:2001, incorporating amendment A1:2007, has the status of a British Standard ICS 13.220.10 ? Licensed Copy: London
2、South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 12416-2:2001 This British Standard was published under the authority of the Standards Committee and comes into effect on 15 August 2001 BSI 2007 ISBN 978 0 580 60200 9 National f
3、oreword This 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 It supersedes BS 5306-7:1998 which is withdrawn.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 entrusted by Technical Committee FSH/18, Fixed firefighting systems, to Subcommittee FSH/18/8, Powd
4、er systems. A list of organizations represented on this subcommittee can be obtained on request 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,
5、 fire and 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 mar
6、king purposes, is subject to an announcement in the Official Journal of the European Communities. This 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
7、 legal obligations. Amendments issued since publication Amd. No.DateComments 1736228 September 2007 Implementation of CEN amendment A1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORM
8、E EUROPENNE EUROPISCHE NORM EN 12416-2:2001+A1 June 2007 ICS 13.220.20 Supersedes EN 12416-2:2001 English Version Fixed firefighting systems - Powder systems - Part 2: Design, construction and maintenance Installations fixes de lutte contre lincendie - Systmes dextinction poudre - Partie 2: Concepti
9、on, construction et maintenance Ortsfeste Brandbekmpfungsanlagen - Pulverlschanlagen - Teil 2: 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 R
10、egulations which stipulate the 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 CEN Management Centre or to any CEN member. T
11、his European Standard exists in three 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 CEN Management Centre has the same status as the official versions. CEN members ar
12、e the national standards bodies of 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, Switze
13、rland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION 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.
14、 EN 12416-2:2001+A1:2007: E Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 12416-2:2001+A1:2007 (E) 2 Contents Foreword3 Introduction 3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Expella
15、nt 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 systems10 12 Control and release of powder extinguishing systems.11 13 Pipework des
16、ign.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) Minimum design conditions f
17、or powder based on sodium bicarbonate25 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 EN 12416-2:2001+A1:2007 (E) Foreword This document (EN 12416-2:2001+A1:2007) has been prepared by Technical Committee CE
18、N/TC 191 “Fixed firefighting systems“, the secretariat of which is held 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 la
19、test by December 2007. This document includes Amendment 1 approved by 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 sy
20、stems - Powder systems“ and consists of the following two parts: - Part 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 t
21、o cover also: a) gas extinguishing systems (EN 12094); b) sprinkler systems (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/CENELE
22、C Internal Regulations, the national standards organizations of the following 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, Luxembou
23、rg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, 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. Risk
24、s 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 characteristics similar to naphthalene and pitch, which melt when involved in a fire; and c) Combustibles such as woo
25、d, 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 protection for the following: d) Chemicals containing their own oxygen supply such as cellulose nitrate; Licensed Cop
26、y: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 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 which the extinguishant would not be able to reach
27、; 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 which can be corrosive, conductive and difficult to
28、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. NOTE 2 The extinguishing of uncontrolled discha
29、rge 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 electrical delay system; actuation and control sys
30、tem (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 of fixed fire extinguishing systems which disch
31、arge 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 use in buildings and other construction works as
32、 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 explosion, earthquake zones or extreme environmental co
33、nditions 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, provisions from other publications. These normat
34、ive 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 it by amendment or revision. For undated refere
35、nces 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, installation, commissioning, use and maintenance
36、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 firefighting systems - Components for gas extinguishing sys
37、tems - 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 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, U
38、ncontrolled Copy, (c) BSI 5 EN 12416-2:2001+A1:2007 (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 sys
39、tem fixed installed system discharging powder 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
40、or enclosure which is extinguished by the powder 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
41、 at least the !maximum discharge time“ and an 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 CO2 as expellant gas the system shall be carefully d
42、esigned 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 Gas Maximum water content % Air 0,006 Argon 0,006 CO2 0,015 Helium 0,006 Nitrogen 0,006 5 Extinguishing powder !This standard is applic
43、able for the use of extinguishing powder based on 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 t
44、ypes 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 have previously bee
45、n 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. Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) B
46、SI 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 shall be compatible. The installer shall declare and document the co
47、mpatibility 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 typical arrangement of the components in a powder system is given in Fi
48、gure 1 and a block diagram for powder extinguishing systems is given in Figure 2. Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:20:20 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 7 EN 12416-2:2001+A1:2007 (E) Key 1 Powder container 19 Drain connection 2 Fill
49、opening 20 Main powder valve 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 container 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 3