1、BSI Standards PublicationBS EN 16712-1:2015Portable equipment forprojecting extinguishingagents supplied by fire fightingpumps Portable foamequipmentPart 1: Inductors PN 16BS EN 16712-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16712-1:2015.The UK par
2、ticipation in its preparation was entrusted to Technical Committee FSH/17, Fire brigade equipment.A list of organizations 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 respo
3、nsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85151 3 ICS 13.220.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Stand
4、ards Policy and Strategy Committee on 30 September 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 16712-1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16712-1 September 2015 ICS 13.220.10 English Version Portable equipment for projecting extinguishin
5、g agents supplied by fire fighting pumps - Portable foam equipment - Part 1: Inductors PN 16 Equipement portable de projection dagents dextinction aliment par des pompes usage incendie - Equipements mousse portables - Partie 1 : Proportionneurs PN 16 Tragbare Gerte zum Ausbringen von Lschmitteln, di
6、e mit Feuerlschpumpen gefrdert werden - Tragbare Schaumgerte - Teil 1: Zumischer PN 16 This European Standard was approved by CEN on 1 August 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
7、 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German)
8、. 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, C
9、yprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited K
10、ingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1671
11、2-1:2015 EBS EN 16712-1:2015EN 16712-1:2015 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Inductor types 7 5 Designation 8 6 Material . 8 7 Requirements and verification 8 7.1 General 8 7.2 Components, dimensions and mass .
12、9 7.3 Pressures and geodetic suction height . 11 7.4 Inductors without setting device 12 7.5 Inductors with setting device 13 7.6 Leak-tightness . 13 8 Information for use . 14 8.1 Instruction and maintenance handbook . 14 8.1.1 General . 14 8.1.2 Instruction handbook . 14 8.1.3 Maintenance handbook
13、 . 14 8.2 Marking 14 8.3 Colour coding . 15 Annex A (informative) Acceptance test on delivery . 16 Bibliography . 17 BS EN 16712-1:2015EN 16712-1:2015 (E) 3 European foreword This document (EN 16712-1:2015) has been prepared by Technical Committee CEN/TC 192 “Fire and Rescue Service Equipment”, the
14、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 latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. Attention is dra
15、wn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. EN 16712 consists of the following parts, under the general title “Portable equipment for projecting e
16、xtinguishing agents supplied by fire fighting pumps Portable foam equipment”: Part 1: Inductors PN 16; Part 2: Pick-up tubes; Part 3: Low and medium expansion hand-held foam branchpipes PN 16; Part 4: High expansion foam generators PN 16. According to the CEN-CENELEC Internal Regulations, the nation
17、al standards organizations 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, Lithu
18、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16712-1:2015EN 16712-1:2015 (E) 4 Introduction The inductor is only one piece in the foam system. Other components such as branchpipes, pick-u
19、p tubes and delivery hoses should be taken into account (see Figure 2 as example of installation). BS EN 16712-1:2015EN 16712-1:2015 (E) 5 1 Scope 1.1 This European Standard defines requirements and tests which apply to inductors PN 16 which are used to proportion foam concentrate or other additives
20、 to the water stream and work using the Venturi principle. 1.2 This European Standard is not applicable to inductors which are integrated in self-inducting foam branchpipe. 1.3 This European Standard is not applicable to inductors which have been manufactured before its date of publication as Europe
21、an Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includ
22、ing any amendments) applies. EN 837-1, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and testing EN 837-3, Pressure gauges Part 3: Diaphragm and capsule pressure gauges Dimensions, metrology, requirements and testing EN 16712-2, Portable equipment for proje
23、cting extinguishing agents supplied by fire fighting pumps Portable foam equipment Part 2: Pick-up tubes 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 inductor equipment which, using the Venturi principle, induces foam concentrates or other
24、 additives into a water flow to produce a solution at a predetermined ratio Note 1 to entry: Venturi principle: a negative pressure is created in a suction chamber by means of the injector effect. 3.2 regulating device automatic device that regulates p23.3 setting device device to select the proport
25、ion ratio BS EN 16712-1:2015EN 16712-1:2015 (E) 6 3.4 proportion ratio percentage of foam concentrates or additives in the foam water solution EXAMPLE If a hand-held foam branchpipe is used to flow 400 l/min of foam water solution at a proportion ratio of 3 %, the foam concentrate flow will be 12 l/
26、min. 3.5 foam water solution homogeneous mixture of water and foam concentrate Note 1 to entry: Foam concentrates are defined in EN 1568 series. 3.6 pressures Note 1 to entry: Pressures are expressed in bar, measured with respect to atmospheric pressure. Note 2 to entry: 1 bar = 0,1 MPa (105Pa). 3.6
27、.1 foam branchpipe working pressure p1pressure measured at the inlet of the foam branchpipe 3.6.2 outlet working pressure p2pressure measured at the outlet of the inductor 3.6.3 inlet working pressure p3pressure measured at the inlet of the inductor 3.6.4 nominal pressure pNmaximum working pressure
28、measured at the inlet of the inductor 3.6.5 test pressure ptstatic pressure used for leakage tests 3.6.6 burst pressure pBstatic pressure used for burst test BS EN 16712-1:2015EN 16712-1:2015 (E) 7 3.6.7 inductor pressure loss p2pressure difference between the inlet of the inductor and the outlet of
29、 the inductor (p3 p2) expressed in percentage of p3Note 1 to entry: The pressure loss of the inductor can be calculated with the following formula: =3223 .100pppp. 3.7 geodetic suction height HS geodistance measured from the central axis of the inductor to the lowest point at which foam concentrate
30、or additive is supplied 4 Inductor types The inductors are categorized by the foam water solution flow rate of the inductor in types according to Table 1. Table 1 Inductor types Type Nominal flow rate of inductor aRegulating device Minimum inside diameter of the connection Water inlet/Foam water sol
31、ution outlet Foam concentrate inlet l/min Z 0,5 50 without 25,4 mm (1”) 25,4 mm (1”) Z 0,5R with Z 1 100 without 25,4 mm (1”) or 38 mm (1,5”) or 51 mm (2”) Z 1R with Z 2 200 without 38 mm (1,5”) or 51 mm (2”) Z 2R with Z 4 400 without 51 mm (2”) or 63,5 mm (2,5”) Z 4R with Z 8 800 without 51 mm (2”)
32、 or 63,5 mm (2,5”) Z 8R with aMeasured at p1 = 5 bar, p2 = 6,5 bar and p2 35 %BS EN 16712-1:2015EN 16712-1:2015 (E) 8 5 Designation The designation of an inductor in compliance with EN 16712-1 comprises name, reference to EN 16712-1, type. EXAMPLE 1 Designation of an inductor with a nominal foam wat
33、er solution flow rate of 200 l/min: Inductor EN 167121 Z 2 EXAMPLE 2 Designation of an inductor with a nominal foam water solution flow rate of 200 l/min and a regulating device: Inductor EN 167121 Z 2R 6 Material Inductors shall be made of materials (with or without coatings) whose surfaces and fun
34、ction are not affected by the extinguishing agents or the environment in which they operate. Depending on special application of the inductor (e.g. fire-fighting on sea-going vessels, disinfection etc.), the list of appropriate materials to be used (e.g. metal, plastic) shall be agreed upon between
35、the manufacturer and the customer. The materials used shall be selected so that all the requirements in Clause 7 are met, subject to the tests defined in this European Standard. 7 Requirements and verification 7.1 General All the tests defined in this European Standard are type tests. The tests shal
36、l be carried out according to Figure 1 and Figure 3, using water in place of foam concentrate and pressure gauges according to EN 837-1 or EN 837-3; accuracy class 2, and under the following conditions: water and air temperature between 5 C and 30 C. NOTE Guidance for acceptance tests on delivery is
37、 given in Annex A. BS EN 16712-1:2015EN 16712-1:2015 (E) 9 Dimensions in millimetres Key Hs geo geodetic suction height-inductor in meter 1 inductor l hose length 2 hand-held foam branchpipe p1foam branchpipe working pressure 3 foam concentrate or additive p2 outlet working pressure 4 foam container
38、 p3 inlet working pressure 5 pick-up tube Figure 1 Measure instruction 7.2 Components, dimensions and mass 7.2.1 The inductor shall be equipped at the water inlet, water foam solution outlet and at the foam concentrate inlet with connections according to Table 1. 7.2.2 A back flow preventer shall be
39、 installed in the foam concentrate inlet of the inductor. 7.2.3 The flow direction shall be indicated by an arrow on the body of the inductor. 7.2.4 The inductor shall be fitted with a pick-up tube according to EN 16712-2. 7.2.5 As hand-held foam branchpipes are not usually equipped with a flushing
40、device, a strainer can be fitted at the water inlet of the inductor if specified by the customer. NOTE A strainer will cause an additional pressure loss. 7.2.6 Dimensions and masses of the inductor (without coupling) shall be in accordance with Figure 2 and Table 2. BS EN 16712-1:2015EN 16712-1:2015
41、 (E) 10 Key 1 water inlet 2 setting device 3 foam concentrate or additive inlet 4 foam water solution outlet For dimensions A, B, C, see Table 2. Figure 2 Example of inductor with setting device BS EN 16712-1:2015EN 16712-1:2015 (E) 11 Table 2 Maximum dimension and mass Type Dimension Mass A B C mm
42、mm mm kg Z 0,5 250 150 200 3 Z 0,5R Z 1 Z 1R Z 2 400 200 200 Z 2R Z 4 Z 4R Z 8 Z 8R 5 NOTE The maximum mass does not apply to seawater-resistant inductors. Verification Measurement of dimensions and mass. 7.3 Pressures and geodetic suction height The following pressures shall be used for the determi
43、nation of the hydraulic characteristics: nominal pressure: pN= 16 bar 0,25 bar; test pressure: pt= 25,5 bar 0,25 bar; burst pressure: pB= 50 bar 0,25 bar. Verification The inductor shall be mounted, with caps on the outlet and on the foam concentrate inlet, on a device capable of exerting a hydrosta
44、tic pressure of 50 bar (burst pressure pB). All air shall be bled out of the system. The pressure shall be increased by 3 bar increments and held for 30 s at each pressure up to pB. This maximum pressure shall be held for 1 min without rupturing the inductor. The geodetic suction height shall be (1,
45、5+0,10) m. Verification Measure the geodetic suction height with the measure instruction according to Figure 1 or Figure 3. BS EN 16712-1:2015EN 16712-1:2015 (E) 12 7.4 Inductors without setting device Inductors without setting device shall be designed for a single proportioning ratio defined in Tab
46、le 3 and shall be marked accordingly. Verification Visual inspection of the marking. The foam branchpipe shown in Figure 3 can be replaced by any branchpipe or valve that will give an outlet pressure p2of 6,5 bar at the nominal flow rate. The minimum distance between the inductor outlet and pressure
47、 gauge at p2shall be 5 times hose diameter. This test shall be conducted while inducting at the highest proportion ratio marked on the inductor. Using the control valve or branchpipe, the outlet working pressure p2shall be set to 6,5 bar at the nominal flow rate. Measure the inlet working pressure p
48、3. p3shall be less than or equal to 10 bar (to reach the inductor pressure loss p2 35 %). Key 1 pressure gauge p32 pressure gauge p23 flow meter Hs geo geodetic suction height-inductor in meter Figure 3 Installation for the flowrate and proportion ratio tests BS EN 16712-1:2015EN 16712-1:2015 (E) 13
49、 7.5 Inductors with setting device Inductors with setting device shall be designed for a combination of proportion ratios ranging from 0,1 % to 6 % according to Table 3. The setting device shall reduce the proportion ratio if turned clockwise and shall increase the proportion ratio if turned counter-clockwise. The proportion ratios shall be clearly and permanently marked. Table 3 Performance data Tolerance of the flow rate 0% 10% +Type Foam concentrate or additive flow rate aat (20 5) C 0,1 % l/mi
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