1、BSI Standards PublicationBS EN 16712-2:2015Portable equipment forprojecting extinguishingagents supplied by fire fightingpumps Portable foamequipmentPart 2: Pick-up tubesBS EN 16712-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16712-2:2015.The UK parti
2、cipation 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 respons
3、ible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85150 6 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 Standar
4、ds 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 16712-2:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16712-2 September 2015 ICS 13.220.10 English Version Portable equipment for projecting extinguishing
5、agents supplied by fire fighting pumps - Portable foam equipment - Part 2: Pick-up tubes Equipement portable de projection dagents dextinction aliment par des pompes usage incendie - Equipements mousse portables - Partie 2 : Flexibles daspiration Tragbare Gerte zum Ausbringen von Lschmitteln, die mi
6、t Feuerlschpumpen gefrdert werden - Tragbare Schaumgerte - Teil 2: Ansaugschlauch 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 a na
7、tional 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). A v
8、ersion 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, Cyprus
9、, 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 Kingdo
10、m. 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 16712-2:2
11、015 EBS EN 16712-2:2015EN 16712-2:2015 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Terms and definitions . 4 3 Designation 4 4 Requirements . 4 4.1 Components, dimensions and mass . 4 4.2 Material . 7 4.3 Connection to the inductor/proportioning device . 7 4.4 Tightness 8 4.5 Cross section
12、 . 8 4.6 Collapsing . 8 Bibliography 9 BS EN 16712-2:2015EN 16712-2:2015 (E) 3 European foreword This document (EN 16712-2:2015) has been prepared by Technical Committee CEN/TC 192 “Fire and Rescue Service Equipment”, the secretariat of which is held by BSI. This European Standard shall be given the
13、 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 drawn to the possibility that some of the elements of this document may be the su
14、bject 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 extinguishing agents supplied by fire fighting pumps Portable foam equipment”:
15、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 national standards organizations of the following countries are bound to implement t
16、his 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova
17、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16712-2:2015EN 16712-2:2015 (E) 4 1 Scope 1.1 This European Standard specifies performance requirements and test methods for pick-up tubes. This European Standard applies to pick-up tubes from DN 20 to DN 50 which are us
18、ed for the suction of foam concentrate or additives and defines their requirements and test procedures. Pick-up tubes are especially used with inductors in accordance with EN 16712-1. NOTE Pick-up tubes can also be used for the suction of other substances (e.g. absorbents). 1.2 This European Standar
19、d is not applicable to pick-up tubes which have been manufactured before its date of publication as European Standard. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 pick-up tube device through which foam concentrate, additives or other subs
20、tances are transferred from a reservoir to an inductor or other proportioning device 3 Designation The designation of pick-up tubes in compliance with EN 16712-2 comprises name of the equipment, reference to EN 16712-2, nominal diameter, total length. EXAMPLE A pick-up tube with a nominal diameter o
21、f 38 mm and a total length of 1 500 mm is designated as follows: Pick-up tube EN 167122 DN 38 1 500 4 Requirements 4.1 Components, dimensions and mass The pick-up tube consists of a semi-rigid transparent tube connectable at one end to the foam concentrate inlet of an inductor or proportioning devic
22、e (see Figure 1). At the other end, it should remain free or be equipped with a riser metallic or plastic pipe, or a strainer, with or without foot valve, or BS EN 16712-2:2015EN 16712-2:2015 (E) 5 a coupling, or any combinations of the above elements. It is recommended that the length of the flexib
23、le section (semi rigid translucent tube) and of the rigid section (riser pipe) be specified by the user/purchaser to meet their specific requirements. NOTE Riser pipes have proved to be more advantageous than a free tube end because their mass helps avoid the pick-up tube slipping out of the foam co
24、ncentrate or additive container. The above elements should take into account the total length indicated in Table 2 and shall not reduce the performance of the inductor or proportioning device, e.g. by a smooth internal surface of the semi rigid tube. The nominal diameters shall be in accordance with
25、 Table 1. Table 1 Nominal diameters Nominal flow rate of proportioning or inducting device DN 800 l/min 20 mm 800 l/min to 2 000 l/min 25 mm to 38 mm 2 000 l/min 38 mm Dimensions and mass of pick-up tubes DN 20 shall be in accordance with Table 2 and Figure 1. For pick-up tubes larger than DN 20 dim
26、ensions and mass shall be agreed between the manufacturer and the user. Table 2 Total length and maximum mass of pick-up tube DN 20 Pick-up tube DN 20 Total length (L) Maximum mass mm kg Pick-up tube EN 167122 DN 20 - 1 500 1 500 50 1 Pick-up tube EN 167122 DN 20 - 2 500 2 500 50 2 BS EN 16712-2:201
27、5EN 16712-2:2015 (E) 6 Dimensions in millimetres Key 1 connection to inductor or proportioning device 2 semi rigid translucent tube 3 riser pipe d nominal diameter L total length Figure 1 Dimensions of a pick-up tube Verification Measurement of dimensions and mass. The riser pipe end shall not be cu
28、t at sharp angle (see Figure 2, a) to avoid injury to the user. Examples of permitted riser ends are given in Figure 2, b). BS EN 16712-2:2015EN 16712-2:2015 (E) 7 Symbol = ISO 7010-W022 a) Riser pipe end not permitted b) Examples of permitted riser pipe ends Figure 2 Riser pipe end Verification Vis
29、ual inspection. 4.2 Material The semi rigid tube shall be made of thermoplastic material, optionally with reinforcement (e.g. spiral wire or fibre reinforced). The material of the tube shall be translucent in order to view the presence of the foam concentrate or additive inside the semi rigid tube a
30、nd/or flow disturbances. Verification Visual inspection and supplier material certificate. The resistance to foam concentrate or additive shall be agreed between the supplier and the user. The pick-up tube should be UV-resistant. Verification Material certificates. 4.3 Connection to the inductor/pro
31、portioning device The wall thickness shall be selected in such a way that the tube is permanently fixed to the coupling. A tube clamp or other convenient binding mechanism is permitted. A suitable permanent adhesive may be used. BS EN 16712-2:2015EN 16712-2:2015 (E) 8 Verification The tube shall be
32、attached to the connector in such a way that its position on the connector does not change. On the tube heated up to a temperature of (55 3) C, a traction force of (100 5) N is applied for 15 s to the coupling-free end of the tube. After 15 s, check by visual inspection that the position of the tube
33、 on the connector has not moved. 4.4 Tightness During a one-minute test, the pressure shall not change. Verification At room temperature (23 5) C, a pressure of (- 0,8 0,1) bar shall be maintained inside the tube for 15 s. Check that the pressure does not deviate more than 0,1 bar. 4.5 Cross section
34、 During the test below, the outer diameter of the semi rigid tube shall not be more than 20 % smaller at any point, when compared to the original outer diameter. Verification The diameter of the semi rigid tube shall be measured after 15 s at a temperature of 55 C and a pressure of - 0,8 bar. 4.6 Co
35、llapsing During the test below, the semi rigid tube shall not collapse. Verification The semi rigid tube, cooled down to a temperature of (-15 2) C for 30 min, is bent by 180 with a bending inside diameter of DN x 10. Check by visual inspection that the semi rigid tube does not collapse. BS EN 16712
36、-2:2015EN 16712-2:2015 (E) 9 Bibliography 1 EN 1568-1, Fire extinguishing media Foam concentrates Part 1: Specification for medium expansion foam concentrates for surface application to water-immiscible liquids 2 EN 1568-2, Fire extinguishing media Foam concentrates Part 2: Specification for high ex
37、pansion foam concentrates for surface application to water-immiscible liquids 3 EN 1568-3, Fire extinguishing media Foam concentrates Part 3: Specification for low expansion foam concentrates for surface application to water-immiscible liquids 4 EN 1568-4, Fire extinguishing media Foam concentrates
38、Part 4: Specification for low expansion foam concentrates for surface application to water-miscible liquids 5 EN 16712-1, Portable equipment for projecting extinguishing agents supplied by fire fighting pumps Portable foam equipment Part 1: Inductors PN 16 6 EN ISO 7010, Graphical symbols Safety col
39、ours and safety signs Registered safety signs (ISO 7010) This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. Bri
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