EN 16712-4-2018 Portable equipment for projecting extinguishing agents supplied by firefighting pumps - Portable foam equipment - Part 4 High expansion foam gen.pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Portable equipment for projecting extinguishing agents supplied by firefighting pumps - Portable foam equipmentPart 4: High expansion foam generators PN16BS EN 167124:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR

2、M EN 16712-4 August 2018 ICS 13.220.10 English Version Portable equipment for projecting extinguishing agents supplied by firefighting pumps - Portable foam equipment - Part 4: High expansion foam generators PN16 Equipement portable de projection dagents dextinction aliment par des pompes usage ince

3、ndie - Equipements mousse portables - Partie 4 : Gnrateurs de mousse PN 16 haut foisonnement Tragbare Gerte zum Ausbringen von Lschmitteln, die mit Feuerlschpumpen gefrdert werden - Tragbare Schaumgerte - Teil 4: Leichtschaum-Generatoren PN 16 This European Standard was approved by CEN on 16 April 2

4、018. 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 obtained

5、 on application to the CEN-CENELEC 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-CE

6、NELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, It

7、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Ce

8、ntre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16712-4:2018 ENational forewordThis British Standard is the UK implementation of EN 167124:2018. The UK participation in its preparati

9、on was entrusted to Technical Committee FSH/17, Fire Portable equipment for projecting extinguishing agents supplied by fire fighting pumps Portable foam equipment Part 2: Pick-up tubes; Portable equipment for projecting extinguishing agents supplied by fire fighting pumps Portable foam equipment Pa

10、rt 3: Low and medium expansion hand-held foam branchpipes PN 16; Portable equipment for projecting extinguishing agents supplied by firefighting pumps Portable foam equipment Part 4: High expansion foam generators PN16. According to the CEN-CENELEC Internal Regulations, the national standards organi

11、zations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M

12、alta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 167124:2018EN 16712-4:2018 (E) 4 Introduction This document is a type-C standard as stated in EN ISO 12100. This document is of relevance, in particular,

13、 for the following stakeholder groups representing the market players with regard to machinery safety: machine manufacturers (small, medium and large enterprises); health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.). Others can be affected by the level

14、 of machinery safety achieved with the means of the document by the above-mentioned stakeholder groups: machine users/employers (small, medium and large enterprises); machine users/employees (e.g. trade unions, organizations for people with special needs); service providers, e.g. for maintenance (sm

15、all, medium and large enterprises); consumers (in the case of machinery intended for use by consumers). The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process of this document. The machinery concerned and the extent to which hazards, hazardous s

16、ituations or hazardous events are covered are indicated in the Scope of this document. When requirements of this type-C standard are different from those which are stated in type-A or -B standards, the requirements of this type-C standard take precedence over the requirements of the other standards

17、for machines that have been designed and built according to the requirements of this type-C standard. BS EN 167124:2018EN 16712-4:2018 (E) 5 1 Scope 1.1 This document applies to high expansion foam generators, having an expansion ratio greater than 200:1, whose only source of external power is the p

18、ressure and/or flow of the water supply to the device. This is used by fire and rescue services and contains their specification and test procedures. NOTE In this document, the term “foam generator” also refers to “high expansion foam generator”. 1.2 This document deals with all significant hazards,

19、 hazardous situations or hazardous events, with the exception of noise, relevant to high expansion foam generator, when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. 1.3 This document does not cover misting applications. 1.4 This document

20、 is not applicable to high expansion foam generators which have been manufactured before its date of publication as EN. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated refe

21、rences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CEN/TS 15989:2015, Firefighting and rescue service vehicles and equipment - Graphical symbols for control elements and displays and for markings EN 1568-2

22、:2008, Fire extinguishing media - Foam concentrates - Part 2: Specification for high expansion foam concentrates for surface application to water-immiscible liquids EN 16712-2:2015, Portable equipment for projecting extinguishing agents supplied by fire fighting pumps - Portable foam equipment - Par

23、t 2: Pick-up tubes EN 61310-2:2008, Safety of machinery - Indication, marking and actuation - Part 2: Requirements for marking (IEC 61310-2:2007) EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13857:2008, Safety of

24、machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:208) EN ISO 14120:2015, Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards (ISO 14120:2015) ISO 7000:2014, Graphical symbols for use on

25、equipment - Registered symbols 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:

26、/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp BS EN 167124:2018EN 16712-4:2018 (E) 6 3.1 high expansion foam generator device, with or without self-inducting system, which produces foam with an expansion ratio greater than 200:1 Note 1 to entry: See examples

27、 in Figure 1. Key 1 foam concentrate 2 pick-up tube 3 inductor or self-inducting system 4 hose connection 5 foam generator Figure 1 Examples of foam generators 3.2 expansion expansion ratio ratio of the volume of foam to the volume of the water foam solution from which the foam was made 3.3 nominal

28、pressure pNmaximum working pressure measured at the inlet of the foam generator 3.4 premix solution produced by introducing a measured amount of foam concentrate into a given amount of water Note 1 to entry: Foam concentrates are defined in the EN 1568 series. Note 2 to entry: The premix can be intr

29、oduced from a tank or from an inductor. BS EN 167124:2018EN 16712-4:2018 (E) 7 4 Designation Foam generators in compliance with this document shall be designed as follows: name of the equipment; reference to this document, EN 16712-4; flow rate, in l/min ; expansion ratio (HX, HXX or HXXX, see below

30、); model: portable (P), transportable (T) or wheeled transportable (W); self-inducting system, if any, by adding “Y”. The code to be used in the designation for the expansion ratio of the foam generator at the reference pressure shall be in accordance with Table 1. Table 1 Code for the expansion rat

31、io Expansion ratio Code 200 to 350 HX 351 to 600 HXX over 600 HXXX EXAMPLE 1 A high expansion foam generator with a flow rate of 100 l/min, an expansion ration of 350, portable, without self-inducting system is designed as follows: High expansion foam generator EN 16712-4 1OO HX P EXAMPLE 2 A high e

32、xpansion foam generator with a flow rate of 200 l/min, an expansion ration of 600, portable, with self-inducting system is designed as follows: High expansion foam generator EN 16712-4 2OO HXX P Y 5 Material and components 5.1 Material Foam generators shall be made of materials (with or without coat

33、ings) whose surfaces and function are not affected by the extinguishing agents or the environment in which they operate. Depending on special application of the foam generator (e.g. fire-fighting on sea-going vessels, disinfection, etc.), the list of appropriate materials to be used (e.g. metal, pla

34、stic) shall be agreed upon between the manufacturer and the customer. All materials shall maintain their structural integrity at 80 C. This is not to be confirmed by testing but by the relevant material data sheet. The materials used shall be selected so that all the requirements in Clause 6 are met

35、 in accordance with the tests defined in this document. BS EN 167124:2018EN 16712-4:2018 (E) 8 5.2 Components The foam generator shall be equipped at the water/premix inlet, and at the foam concentrate inlet, with dimensions according to Table 3. A non-return valve can be installed in the foam conce

36、ntrate inlet of the foam generator. The flow direction shall be indicated by an arrow on the body of the foam generator and on the inductor, if the inductor exists. If fitted with a pick-up tube in accordance with EN 16712-2, then it shall be with an inside diameter of at least 20 mm and a minimum l

37、ength of 1,5 m 50 mm, including any rigid section. As foam generators are not usually equipped with a flushing device, a strainer can be fitted at the water inlet of the foam generator if specified by the customer. NOTE A strainer will cause an additional pressure loss. 6 Safety requirements and/or

38、protective/risk reduction measures and verification 6.1 General Foam generators shall comply with the safety requirements and/or protective/risk reduction measures of this clause. Foam generators shall be designed according to the principles of EN ISO 12100 for relevant but not significant hazards (

39、e.g. sharp edges), which are not dealt with by this document. All the tests defined in Clause 6 of this document are type tests. 6.2 Mechanical hazard 6.2.1 Moving parts Access to moving parts (e.g. fan) shall be prevented during normal operation. If necessary to achieve this requirement the followi

40、ng shall be provided: fixed guards as defined in EN ISO 14120 complying with the safety distances as defined in EN ISO 13857. Verification Inspection and measurement. 6.2.2 Stability The foam generator shall be designed in such a way that it is stable during normal operation. Verification Functional

41、 test under maximum pressure. 6.2.3 Handling The foam generator shall be equipped with handles and wheels as defined in Table 2. BS EN 167124:2018EN 16712-4:2018 (E) 9 Table 2 Handles and wheels Model Mass Minimum number of handles Minimum number of wheels kg Portable (1 person) 20 1 0 Transportable

42、 (2 persons) 40 2 0 Wheeled transportable 60 1 2 Verification Measurement of the mass and visual inspection. 7 Performance requirements and verification 7.1 General All the tests defined in Clause 7 of this document are type tests. NOTE Guidance for acceptance tests on delivery is given in Annex B.

43、The following pressures, measured at the foam generator inlet, shall be used for the hydraulic tests: reference pressure : pR= (5 0,1) bar; nominal pressure : pN= (16 0,1) bar. In accordance with EN 1568-2, the test shall be conducted with the following conditions: air temperature (20 5) C; foam sol

44、ution temperature (17,5 2,5) C. 7.2 Dimensions, mass and flow rate Maximum dimensions and masses of the foam generator (without coupling), and the minimum flow rate, shall be in accordance with Table 3. Table 3 Maximum dimensions and masses of foam generators, their minimum flow rate, and dimensions

45、 of inlets Model Mass Dimension L W H Flow rate at pRWater/premix inlet Foam concentrate inlet kg mm l/min Portable (1 person) 20 620 700 320 100 51 mm (2”) 25,4 mm (1”) Transportable (2 persons) 40 600 750 450 Wheeled transportable 60 950 1000 500 BS EN 167124:2018EN 16712-4:2018 (E) 10 Verificatio

46、n Measurement of the dimensions in accordance with Table 3 (mass already measured according to 6.2.3). The foam generator shall be operated with water only and the flow rate shall be measured using a calibrated flow meter in accordance with Table 3. 7.3 Expansion ratio The name, the reference and th

47、e manufacturer of the foam compound used for determining the expansion ratio shall be defined by the manufacturer and given in the data sheet. Verification The expansion ratio of the foam generator shall be tested in accordance with EN 1568-2:2008, Annex G. 7.4 Endurance The foam generator shall be

48、constructed in such a way that it can operate for long periods without loss of performance. Verification The foam generator shall be operated continuously for 4 h with water only at the pressures specified on Figure 2. At any point in time within the 1st and the last 30 min of the test, the pressure

49、 shall be increased from 5 bar to 16 bar and operated at this pressure for a continuous period of 2 min. The increase and decrease in pressure from 5 bar to 16 bar, and vice versa, shall not take longer than 2 min. By a visual inspection at the end of the test, verify that any parts including rotating parts have no damage that would reduce the performance of the foam generator. Key X time (minutes) Y pressure (bar) Figure 2 Pressure-time curve 8 Information fo