BS EN 13565-2-2009 Fixed firefighting systems - Foam systems - Design construction and maintenance《固定式消防系统 泡沫系统 设计 结构和维护》.pdf

1、BS EN 13565-2:2009ICS 13.220.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFixed firefighting systems Foam systemsPart 2: Design, construction and maintenanceIncorporating corrigendJuly 2009,April 2010 and a September 2010National forewordThis British Standa

2、rd is the UK implementation of EN 13565-2:2009, incorporating corrigenda July 2009 and September 2010. It supersedes BS 5306-6.1:1988 and BS 5306-6.2:1989, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee FSH/18/7, Foam systems.A list of organizations

3、represented on this committee can be obtained on request to its secretary.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 legal obligations.BS EN

4、13565-2:2009This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2009 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 August 2009 CEN Corrigendum July 2009 modifies Figure 230 April 2010 Addition of supersession in

5、formation in the National foreword31 December 2010 Implementation of CEN corrigendum September2010; correction to 5.2.2 and the key to Figure 2ISBN 978 0 580 72805 1EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN 13565-2May 2009ICS 13.220.20 English VersionFixed firefighting systems - Foam syste

6、ms - Part 2: Design, construction and maintenanceInstallations fixes de lutte contre lincendie - Systmes mulseurs - Partie 2: Calcul, installation et maintenanceOrtsfeste Brandbekmpfungsanlagen -Schaumlschanlagen - Teil 2: Planung, Einbau und WartungThis European Standard was approved by CEN on 24 M

7、ay 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-date lists and bibliographical references concerning such national standards may be obtai

8、ned 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 under the responsibility of a CEN member into its own language and notified to the CEN Manageme

9、nt 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

10、 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and b

11、y any means reserved worldwide for CEN national Members.Ref. No. EN 13565-2:2009: EIncorporating corrigenda July 2009and September 2010EN 13565-2:2009 (E) 2 Contents page Foreword 5Introduction . 61 Scope 82 Normative references 83 Terms and definitions . 84 Foam extinguishing systems . 124.1 Genera

12、l 124.1.1 General requirements 124.1.2 Environmental considerations . 134.1.3 Planning 134.1.4 Documentation . 134.1.5 Supplementary manual foam fire fighting provisions . 144.1.6 Equipment 144.2 Water supply 154.2.1 Water demand 154.2.2 Operating time 154.2.3 Quality of water 154.2.4 Power supply f

13、or water pumps 164.3 Foam concentrate 164.3.1 General 164.3.2 Foam concentrate supply low and medium expansion foams 164.3.3 Foam concentrate pumps . 174.3.4 Supplementary external connections 174.4 Foam proportioners . 174.5 Pipework . 184.5.1 Water and foam solution pipework 184.5.2 Foam concentra

14、te piping 184.5.3 Non Newtonian foam concentrate 184.5.4 Piping of aspirated foam (including that for subsurface foam applications) 184.5.5 Marking . 194.6 Foam discharge outlets and generators . 194.7 Operation and control systems 194.7.1 Detection of fires 194.7.2 Release of fixed foam extinguishi

15、ng systems 194.7.3 Alarms . 205 Design . 205.1 Application rates 205.2 Flammable liquid storage tanks, bunds and process areas . 225.2.1 General 225.2.2 Number of foam discharge outlets 245.2.3 Fixed cone roof tanks 245.2.4 Floating roof tanks. 275.2.5 Bunded/diked areas and process areas 286 Foam s

16、prinkler and deluge systems 316.1 Deluge systems 316.1.1 Deluge applications . 316.1.2 Deluge limitations 316.1.3 Deluge design 31BS EN 13565-2:2009EN 13565-2:2009 (E) 3 6.2 Foam enhanced sprinkler systems 316.2.1 Foam enhanced sprinkler applications . 316.2.2 Foam enhanced sprinkler limitations 316

17、.2.3 Foam enhanced sprinkler design 326.3 Foam concentrate 326.3.1 Aspirated foams . 326.3.2 Non aspirated foams . 326.4 Foam proportioning . 326.5 Drain and flushing connections . 321.1.1 NA 331.1.2 NA 331.1.3 N.A . 347 High expansion foam systems . 357.1 General 357.2 Foam concentrate 367.3 Equipm

18、ent 367.4 System design . 367.5 Equipment location considerations . 377.6 Personnel safety 377.7 Discharge rate (total flooding systems) 387.8 Discharge time (total flooding systems) . 388 Marine loading and unloading docks 398.1 Water supplies . 398.2 Foam concentrate 398.3 Foam water monitors 398.

19、4 Below dock foam systems 399 Aircraft hangars . 409.1 General 409.2 Hangar partitioning 409.3 Fire detection . 409.4 System design philosophy . 409.5 System duration . 429.6 Foam and water pumps. 429.7 Acceptable application methods . 429.8 Foam types . 429.9 Monitors 429.10 Foam-water deluge syste

20、ms 429.11 Medium expansion systems (Type 3 hangars only) 439.12 High expansion systems. 439.13 Headlines 439.14 Commissioning tests 4310 Liquefied flammable gases (LNG/LPG) . 4410.1 General 4410.1.1 Liquefied Natural Gas (LNG) . 4410.1.2 Liquefied Petroleum Gas (LPG) 4410.2 Controlled burn-off 4410.

21、3 Un-ignited spills . 4410.4 Fire detection . 4410.5 Foam properties . 4410.6 Foam proportioning system . 4510.7 Application techniques . 4511 Commissioning, testing, and periodic inspections . 4611.1 Instruction of operating personnel 4611.2 Commissioning 4611.2.1 General 4611.2.2 Visual inspection

22、 4611.2.3 Pressure tests . 46BS EN 13565-2:2009EN 13565-2:2009 (E) 4 11.2.4 Tests . 4611.2.5 Completion certificate 4611.3 The periodic inspection and testing of foam systems. 4711.3.1 General . 4711.3.2 Inspections 4711.4 Shut-down 4911.5 Maintenance . 4911.6 Alterations 49Bibliography 50BS EN 1356

23、5-2:2009EN 13565-2:2009 (E) 5 Foreword This document (EN 13565-2:2009) 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 ident

24、ical text or by endorsement, at the latest by November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. EN 13565 Fixed firefighting systems Foam systems consists of the following parts: Part 1: Requirements and test methods for components Part 2: Design, co

25、nstruction and maintenance According to the CEN/CENELEC 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, Hunga

26、ry, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13565-2:2009EN 13565-2:2009 (E) 6 Introduction It has been assumed by the drafting of this European Standard, th

27、at the application of the contained requirements shall be given to qualified and experienced personnel only. It is considered to apply to new foam systems and so it is not considered to apply to existing foam systems. Foam systems are designed to provide a homogeneous layer of bubbles, of aerated fi

28、re fighting foam concentrate and water, over the surface of flammable liquids (Class B) and/or combustible materials (Class A). The layer of bubbles will suppress the release of flammable vapours, exclude air, and cool the fuel and hot surfaces. In addition, High Expansion Foam may be used to provid

29、e total flooding of enclosures with 3 dimensional hazards of either Class A and/or Class B fuels. Prior to the selection and design of foam systems the hazards should undergo a risk assessment; however this is outside the scope of this European Standard. Applications for foam systems can be diverse

30、so no one type of foam system can be prescribed. This European Standard provides guidance for the design of various foam systems available to persons with knowledge and experience in determining the selection of foam fire extinguishing systems which will be effective in protecting specific hazard co

31、nfigurations. The requirement for foam systems derives from risk assessment by those competent to carry out such assessments which are outside the scope of this European Standard. Nothing in this European Standard is intended to restrict new technologies or alternative arrangements, provided the lev

32、el of safety prescribed by this European Standard is not lowered. Typical uses of the various types of foam system are set out in Table 1 below: Table 1 Typical uses of the various types of foam system Hazard Low expansion Medium expansion High expansion(indoors) Flammable liquid storage tanks Yes N

33、o No Tank bunds/collecting areas Yes Yes Yes + LNG/LPG Process areas Yes Yes Yes Aircraft hangers Yes 25 mm) the foam system(s) shall be capable of operating for the duration specified in this European Standard. For spill fire hazards (fuel depth 35 C) may reduce the fire fighting performance and re

34、quire higher application rates - consult the foam concentrate manufacturer. BS EN 13565-2:2009EN 13565-2:2009 (E) 16 4.2.4 Power supply for water pumps Using fixed pumps and where availability and reliability are critical, consideration should be given to dual sources of water supply. These may be p

35、rovided by two or more pumps whose power sources are such that 100% duty is available should one source fail. Mobile pumping units may also be considered. 4.3 Foam concentrate 4.3.1 General Foam concentrates shall be tested and verified to be in accordance with EN 1568. Specific requirements are als

36、o given for low-expansion foams suitable for water-miscible fuels. NOTE 1 Foams tested as low expansion foams according to EN 1568 Parts 3 and 4 will achieve a performance classification based on its extinguishing and burnback properties. For a low expansion foam for water-immiscible fuels (EN 1568-

37、3), there are three extinguishing classes (I, II, III) and four burnback levels (A, B, C, D), performance classification IA being the highest classification. For a low expansion foam for water-miscible fuels (EN 1568-4), there are two extinguishing classes (I, II) and three burnback levels (A, B, C)

38、. It is important to notice that not all foams are suitable for use with sea water and that the performance classification might be different when using fresh water or sea water. In a foam extinguishing system the foam proportioner and foam concentrate shall be compatible in accordance with EN 13565

39、-1. The viscosity properties of the foam concentrate determined according to EN 1568 shall therefore be within the approved viscosity range for the proportioner according to EN 13565-1. Foam concentrates of different types and manufacture should not be mixed unless compatibility has been determined

40、by test and a test report provided. In the event of a change of foam concentrate, the performance classification of the new foam shall be equal to or better than the replaced foam or the minimum performance data specified in designing the system. The necessary performance data of the foam extinguish

41、ing system shall be kept on file. The quantity of foam concentrate provided shall be sufficient to ensure that the minimum specified operation time is achieved. NOTE 2 In addition, appropriate contingency planning is required to provide significant additional stocks of foam concentrate for post fire

42、 security. WARNING The extinguishing effect of premixed solutions, in storage vessels or pipework, may be reduced considerably depending on the storage time and the quality of water used. Polymeric film forming foams should not be pre-mixed unless written confirmation of suitability has been provide

43、d by the foam manufacturer. Foam concentrates shall be stored within the temperature limits given by the foam concentrate supplier. The quality of the stored foam concentrate should be checked using the guidelines described in Clause 11. 4.3.2 Foam concentrate supply low and medium expansion foams R

44、eserve supplies of foam concentrate shall be made available to re-activate the foam system in line with the hazard risk assessment for the site. BS EN 13565-2:2009EN 13565-2:2009 (E) 17 The foam concentrate quantity V in litres shall be calculated as follows: 100maxZtQV = (1) where Qmaxis the maxium

45、 water demand, in litres per minute; Z is the proportioning rate of the foam concentrate in percent; t is the operating time, in minutes. Continuous proportioning of the foam concentrate, for the complete operation time, shall be provided. The foam concentrate storage tanks shall be provided with a

46、contents verification device, drain and fill connections. Consideration shall be given to the design of the storage containers and their pressure/vacuum venting to minimise vapourisation and/or oxidation of concentrate. 4.3.3 Foam concentrate pumps 4.3.3.1 General The design, materials and construct

47、ion of foam concentrate pumps shall be suitable for use with the type of foam concentrate used in the system(s). The viscosity properties of the foam concentrate determined in accordance with EN 1568 shall therefore be within the approved viscosity range for the foam pump. Pumps shall be permanently

48、 filled with foam concentrate to minimise corrosion, foaming and sticking. Where centrifugal pumps are used they shall be fitted with mechanical seals to prevent the ingress of air. Test and re-circulation lines shall be provided from the pump delivery back into the foam storage container to enable the pump to be tested and for pressure relief/control where required. The pump shall be able to deliver the flo