1、BRITISH STANDARDBS EN 1568-1:2008Fire extinguishing media Foam concentrates Part 1: Specification for medium expansion foam concentrates for surface application to water-immiscible liquidsICS 13.220.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g4
2、0g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Incorporatingcorrigendum March 2010National forewordThis British Standard is the UK implementation of EN 1568-1:2008, incorporating corrigendum March 2010. It supersedes BS EN 1568-1:2000 which is wi
3、thdrawn.The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed fire fighting systems, to Subcommittee FSH/18/3, Foam concentrates.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport
4、 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 1568-1:2008This British Standard was published under the authority of the Standards Policy and Strategy Com
5、mittee on 31 March 2008 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 May 2010 Implementation of CEN corrigendum March 2010. Replacement of penultimate paragraph in CEN foreword and last paragraph in CEN introductionISBN 978 0 580 70844 2EUROPEAN STANDARDNORME EUROPENNEEUROP
6、ISCHE NORMEN 1568-1March 2008ICS 13.220.10 Supersedes EN 1568-1:2000 English VersionFire extinguishing media - Foam concentrates - Part 1:Specification for medium expansion foam concentrates forsurface application to water-immiscible liquidsAgents extincteurs - Emulseurs - Partie 1: Spcificationspou
7、r les mulseurs moyen foisonnement destins uneapplication la surface de liquides nayant pas daffinitpour leauFeuerlschmittel - Schaummittel - Teil 1: Anforderungen anSchaummittel zur Erzeugung von Mittelschaum zumAufgeben auf nicht-polare (mit Wasser nicht mischbare)FlssigkeitenThis European Standard
8、 was approved by CEN on 5 January 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such n
9、ationalstandards 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 translationunder the responsibility of a CEN member into its own language and
10、notified to the CEN Management Centre has the same status as theofficial 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, M
11、alta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of explo
12、itation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1568-1:2008: EIncorporating corrigendum March 2010EN 1568-1:2008 (E) 2 Contents Page Foreword. 3 Introduction 4 1 Scope 5 2 Normative references . 5 3 Terms and definitions. 5 4 Sediment in the foam concentra
13、te 6 5 Viscosity of the foam concentrate 7 6 pH of the foam concentrate . 7 7 Surface tension of the foam solution 7 8 Spreading coefficient of the foam solutions 7 9 Expansion and drainage of foam 7 10 Test fire performance . 8 11 Container marking 8 Annex A (informative) Grades of foam concentrate
14、 . 10 Annex B (normative) Preliminary sampling of foam concentrates . 11 Annex C (normative) Determination of percentage sediment . 12 Annex D (normative) Determination of viscosity for pseudo-plastic foam concentrates 13 Annex E (normative) Temperature conditioning of foam concentrates . 15 Annex F
15、 (normative) Determination of surface tension and spreading coefficient 18 Annex G (normative) Determination of expansion and drainage time . 19 Annex H (normative) Determination of test fire performance 24 Annex I (informative) Description of a radiation measurement method. 28 Annex J (informative)
16、 A-Deviations 32 Bibliography . 34 BS EN 1568-1:2008EN 1568-1:2008 (E) 3 Foreword This document (EN 1568-1:2008) 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 s
17、tandard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
18、 rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1568-1:2000. This European Standard is one of a series specifying requirements for fire extinguishing media in common use. This series includes the following: EN 25923
19、, Fire protection Fire extinguishing media Carbon dioxide (ISO 5923:1989) EN 27201-1, Fire protection Fire extinguishing media Halogenated hydrocarbons Part 1: Specifications for halon 1211 and halon 1301 (ISO 7201-1:1989) EN 27201-2, Fire protection Fire extinguishing media - Halogenated hydrocarbo
20、ns Part 2: Code of practice for safe handling and transfer procedures (ISO 7201-2:1991) EN 615, Fire protection Fire extinguishing media Specification for powders (other than Class D powders) This standard is Part 1 of EN 1568 which has the general title “Fire extinguishing media - Foam concentrates
21、“. The other parts are: Part 2: Specification for high expansion foam concentrates for surface application to water-immiscible liquids. Part 3: Specification for low expansion foam concentrates for surface application to water-immiscible liquids Part 4: Specification for low expansion foam concentra
22、tes for surface application to water-miscible liquids. 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, Fran
23、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. As fire fighting foams are chemical agents or chemical preparations the European Directi
24、ves 1967/548/EEC, 1999/45/EC, Regulation (EC) 1907/2006 (REACH) and Directive 2006/122/EC apply and should be taken into account. BS EN 1568-1:2008EN 1568-1:2008 (E) 4 Introduction Classes of fire are defined in EN 2 as follows: Class A: fires involving solid materials, usually of an organic nature,
25、 in which combustion normally takes place with the formation of glowing embers; Class B: fires involving liquids or liquefiable solids; Class C: fires involving gases; Class D: fires involving metals; Class F: fires involving cooking media (vegetable or animal oils and fats) in cooking appliances. F
26、ire fighting foams are widely used to control and extinguish Class B fires and to inhibit re-ignition. These foams can also be used for prevention of ignition of flammable liquids and, in certain conditions, to extinguish Class A fires. Foams can be used in combination with other extinguishing media
27、, particularly gaseous media and powders, which are the subject of other European Standards (see Foreword). These specifications have been designed to ensure that fire extinguishing media have the minimum useful fire fighting capability. The user should ensure that the foam concentrates are used acc
28、urately at the concentration recommended by the manufacturer. Fire performances indicated by this standard cannot replicate practical fire situations. Foam concentrates of different types and manufacturers should not be mixed. It should be noted that some combinations of extinguishing powder and foa
29、m can lead to unacceptable loss of efficiency, caused by unfavourable interaction of the chosen media when applied simultaneously or successively to the fire. It is extremely important that the foam concentrate after dilution with water to the recommended concentration should not in normal usage pre
30、sent a significant toxic hazard to life in relation to the environment. The current versions of European Directives 67/548/EEC, 2006/122/EC and 1999/45/EC and Regulation (EC) 1907/2006 (REACH) apply when considering the testing of ecotoxicological properties and safety in the work environment. BS EN
31、 1568-1:2008EN 1568-1:2008 (E) 5 1 Scope This document specifies requirements for chemical and physical properties, and minimum performance requirements of medium expansion foams suitable for surface application to water-immiscible liquids. Requirements are also given for marking. NOTE Some concentr
32、ates conforming to this part of EN 1568 can also conform to other parts and therefore can also be suitable for application as low and/or high expansion foams. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only
33、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3104, Petroleum products Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity (ISO 3104:1994) EN ISO 3219, P
34、lastics - Polymers/resins in the liquid state or as emulsions or dispersions - Determination of viscosity using a rotational viscometer with defined shear rate (ISO 3219:1993) EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) ISO 304, Surface active ag
35、ents Determination of surface tension by drawing up liquid films ISO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 25 %/50 % drainage time time t
36、aken for 25 %/50 % of the volume of the original foam solution to drain out of the generated foam 3.2 expansion expansion value expansion ratio ratio of the volume of foam to the volume of the foam solution from which it was made 3.3 low expansion foam foam which has an expansion ratio less than 20
37、3.4 medium expansion foam foam which has an expansion ratio greater than or equal to 20 but less than 200 BS EN 1568-1:2008EN 1568-1:2008 (E) 6 3.5 high expansion foam foam which has an expansion ratio greater than or equal to 200 3.6 fire-fighting foam aggregate of air filled bubbles formed from a
38、foam solution used for fire-fighting 3.7 foam concentrate liquid which is diluted with water to produce foam solution NOTE Annex A gives information on grades of foam concentrate. 3.8 foam solution solution of foam concentrate in water 3.9 sediment insoluble particles in the foam concentrate 3.10 sp
39、reading coefficient value which indicates the ability of one liquid to spread spontaneously across the surface of another NOTE The spreading coefficient indicates the possibility of film forming, but it does not measure its quality. 3.11 Newtonian foam concentrates foam concentrates which have a vis
40、cosity which is independent of the shear rate 3.12 pseudo-plastic foam concentrates foam concentrates which have a viscosity which decreases with increasing shear rate 3.13 surface tension tension within the interface between a liquid and air 3.14 interfacial tension tension within the interface bet
41、ween two immiscible liquids 4 Sediment in the foam concentrate 4.1 Sediment before ageing Any sediment in the foam concentrate sampled in accordance with Annex B, but not aged in accordance with C.1, shall be dispersible through a 180 m sieve, and the percentage volume of sediment shall be not more
42、than 0,25 % when tested in accordance with Annex C. 4.2 Sediment after ageing Any sediment in the foam concentrate sampled in accordance with Annex B, and aged in accordance with C.1, shall be dispersible through a 180 m sieve and the percentage volume of sediment shall be not more than 1,0 % when t
43、ested in accordance with Annex C. BS EN 1568-1:2008EN 1568-1:2008 (E) 7 5 Viscosity of the foam concentrate 5.1 Newtonian foam concentrates The viscosity of the foam concentrate at the lowest temperature for use claimed by the manufacturer shall be determined in accordance with EN ISO 3104. If the v
44、iscosity is 200 mm2 s1, the container shall be marked in accordance with Clause 11 l). 5.2 Pseudo-plastic foam concentrates The viscosity of the foam concentrate shall be determined in accordance with Annex D. If the viscosity at the lowest temperature for use is greater than or equal to 120 mPa.s a
45、t 375 s-1, the container shall be marked in accordance with Clause 11 m). 6 pH of the foam concentrate The pH of the foam concentrate sampled in accordance with Annex B shall be not less than 6,0 and not more than 9,5 at (20 1) C. 7 Surface tension of the foam solution The surface tension (determine
46、d in accordance with F.2.1) of the foam solutions prepared using top and bottom half-samples (see E.4) of the foam concentrate sampled in accordance with Annex B and conditioned in accordance with Annex E shall be not less than 0,95 times and not more than 1,05 times the surface tension of the foam
47、solution prepared using the sampled foam concentrate. 8 Spreading coefficient of the foam solutions NOTE The spreading coefficient indicates the possibility of film-forming, but it does not measure its quality. Certain properties of film-forming foams are not defined are note defined by this standar
48、d. 8.1 Before temperature conditioning The foam solution prepared using the concentrate, if it is claimed by the supplier to be “aqueous film-forming“, sampled in accordance with Annex B shall have a positive spreading coefficient over cyclohexane when tested in accordance with F.2.2. 8.2 After temp
49、erature conditioning The foam solution prepared using top and bottom half-samples, see E.4, of the foam concentrate, if it is claimed by the supplier to be “aqueous film-forming“, sampled in accordance with Annex B and conditioned in accordance with Annex E, shall have a positive spreading coefficient over cyclohexane when tested in accordance with F.2.2. 9 Expansion and drainage of foam 9.1 Before temperature conditioning The foam produced from the foam solution prepared from the foam concentrate sampled in accord
