EN 671-2-2012 en Fixed firefighting systems - Hose systems - Part 2 Hose systems with lay-flat hose《固定灭火系统 软管系统 第2部分 软管系统lay-flat软管》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 671-2:2012Fixed firefighting systems Hose systemsPart 2: Hose systems with lay-flat hoseBS EN 671-2:2012 BRITISH STANDARDNational forewordThis British Standard is the UK im

2、plementation of EN 671-2:2012. Itsupersedes BS EN 671-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FSH/18/11, Hose reel systems.A list of organizations represented on this committee can beobtained on request to its secretary.This publication d

3、oes not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 75376 3ICS 13.220.10Compliance with a British Standard cannot confer immunity fromlegal

4、 obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate Text affectedBS EN 671-2:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 671-2 April 2012 ICS 13.220.10 Supersedes EN 6

5、71-2:2001English Version Fixed firefighting systems - Hose systems - Part 2: Hose systems with lay-flat hose Installations fixes de lutte contre lincendie - Systmes quips de tuyaux - Partie 2: Postes deau muraux quips de tuyaux plats Ortsfeste Lschanlagen - Wandhydranten - Teil 2: Wandhydranten mit

6、Flachschlauch This European Standard was approved by CEN on 9 March 2012. 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 bibliogr

7、aphical 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 version in any other language made by translation under the responsibi

8、lity 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, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,

9、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Man

10、agement Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 671-2:2012: EBS EN 671-2:2012EN 671-2:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 52 Normative references 53 Terms

11、 and definitions .64 Requirements .64.1 General 64.2 Distribution of extinguishing media 74.2.1 Hose bore .74.2.2 Minimum flow rate .74.2.3 Effective throw range 74.2.4 Spray discharge .74.3 Operational reliability 74.3.1 Hose General .74.3.2 Shut-off nozzle .84.3.3 Shut-off nozzle Resistance to imp

12、act .84.3.4 Shut-off nozzle Operating torque 84.3.5 Inlet stop valve .84.3.6 Hydraulic properties Resistance to internal pressure 94.3.7 Hydraulic properties Security of couplings .94.4 Ability to pull out the hose 94.4.1 Type 1 Reel .94.4.2 Type 1 and 3 Supports swinging 94.4.3 Hose Maximum length

13、94.5 Colour .94.6 Cabinet 94.6.1 General 94.6.2 Opening/closing device . 104.6.3 Cabinet for manual hose system with screw down type valve 104.6.4 Identification symbol 104.7 Durability aspects . 104.7.1 Durability of operational reliability 105 Test methods . 105.1 General . 105.2 Distribution of e

14、xtinguishing media . 115.2.1 Hose bore 115.2.2 Minimum flow rate 115.2.3 Effective throw range . 115.2.4 Spray discharge 115.3 Operational reliability . 115.3.1 Hose General 115.3.2 Shut-off nozzle 115.3.3 Shut-off nozzle Resistance to impact 115.3.4 Shut-off nozzle Operating torque . 115.3.5 Inlet

15、stop valve 115.3.6 Hydraulic properties Resistance to internal pressure . 115.3.7 Hydraulic properties Security of couplings 125.4 Ability to pull out the hose . 125.4.1 Type 1 Reel 12BS EN 671-2:2012EN 671-2:2012 (E) 3 5.4.2 Type 1 and Type 3 Supports swinging 125.4.3 Hose Maximum length 125.5 Colo

16、ur . 125.6 Cabinet 125.7 Durability aspects 125.7.1 Durability of operational reliability 126 Evaluation of conformity 136.1 General . 136.2 Initial Type Testing Type Testing 136.2.1 General . 136.2.2 Test samples 146.2.3 Test reports 146.3 Factory Production Control (FPC) . 146.3.1 General . 146.3.

17、2 Requirements . 146.3.3 Product specific requirements . 166.3.4 Initial inspection of factory and of FPC . 176.3.5 Continuous surveillance of FPC 186.3.6 Procedure for modifications. 186.3.7 One-off products, pre-production products (e.g. prototypes) and products produced in very low quantity . 187

18、 Marking . 198 Instruction 198.1 Instructions for use . 198.2 Installation and maintenance instructions . 20Annex A (normative) Schedule for testing sequence . 21Annex B (normative) Test method for resistance to external corrosion 22Annex C (normative) Ageing test for plastics materials . 23Annex D

19、(normative) Test method for resistance to corrosion of waterways 24Annex E (normative) Test methods for shut-off nozzle 25E.1 Resistance to impact . 25E.2 Operating torque . 25E.3 Spray discharge . 25E.4 Flow rate and throw range 27E.4.1 Flow rate . 27E.4.2 Throw range . 28Annex F (normative) Test m

20、ethod for resistance to internal pressure . 29Annex ZA (informative) Clauses of this European Standard addressing the provisions of EU Construction Products Directive . 30ZA.1 Scope and relevant characteristics . 30ZA.2 Procedure for the attestation of conformity of hose systems with lay-flat hose .

21、 32ZA.2.1 System of attestation of conformity 32ZA.2.2 EC certificate of conformity 34ZA.3 CE marking and labelling 34BS EN 671-2:2012EN 671-2:2012 (E) 4 Foreword This document (EN 671-2:2012) has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems”, the secretariat of which

22、is held by BSI. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2012 and conflicting national standards shall be withdrawn at the latest by January 2014. Attention is drawn to the possibility that

23、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. This document supersedes EN 671-2:2001. EN 671-2:2001 has been technically revised and editorial edited. The order of clauses has

24、 been changed. Annex ZA has been updated. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is

25、 an integral part of this document. For convenience of application in testing, the normative annexes of this European Standard are arranged so that Annex A gives the sequence of testing for conformity assessment and Annexes B, C, D, E and F are in the correct sequence for testing. EN 671 has the gen

26、eral title “Fixed firefighting systems Hose systems” and is in three parts: Part 1: Hose reels with semi-rigid hose; Part 2: Hose systems with lay-flat hose; Part 3: Maintenance of hose reels with semi-rigid hose and hose systems with lay-flat hose. According to the CEN/CENELEC Internal Regulations,

27、 the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net

28、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 671-2:2012EN 671-2:2012 (E) 5 Introduction Fire hose systems in proper condition provide a very effective firefighting facility with a continuous supply of water availabl

29、e immediately. The requirements of this European Standard have been specified to ensure that hose system can be operated efficiently by one person and that such systems have a long service life. 1 Scope This European Standard specifies requirements and methods of test for the construction and perfor

30、mance of fire hose reel systems with lay-flat hose for installation in buildings, permanently connected to a water supply, for use by the occupants. Furthermore, it provides also for requirements on evaluation of conformity and marking of these products. Its requirements may apply in general for oth

31、er applications, for example in marine applications or in aggressive environments, but additional requirements may be necessary in such cases. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. F

32、or dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 671-3, Fixed firefighting systems Hose systems Part 3: Maintenance of hose reels with semi-rigid hose and hose systems with lay-flat hose

33、EN 14540, Fire-fighting hoses Non-percolating layflat hoses for fixed systems EN ISO 4892-2:2006, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc amps (ISO 4892-2:2006) ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances

34、 and designation EN ISO 9227:2006, Corrosion tests in artificial atmospheres Salt spray tests (ISO 9227:2006) ISO 5208, Industrial valves Pressure testing of metallic valves ISO 7010, Graphical symbols Safety colours and safety signs Registered safety signs BS EN 671-2:2012EN 671-2:2012 (E) 6 3 Term

35、s and definitions For the purposes of this document, the following terms and definitions apply. 3.1 cabinet box to protect the hose system against environmental or physical damage 3.2 coupling device used to connect the hose to the valve and to the shut-off nozzle 3.3 fire hose system; hose system f

36、irefighting appliance consisting essentially of a cabinet or cover, hose support, manual stop valve, lay-flat hose with couplings, shut-off nozzle 3.4 hose support device used to hold the hose and shall be one of the following types: Type 1: rotating reel; Type 2: cradle with the hose double coiled;

37、 Type 3: hose basket with the hose flaked 3.5 lay-flat hose hose which is flat-sectioned except when it is internally pressurized 3.6 maximum working pressure maximum allowable pressure for which the hose system is designed Note 1 to entry: All pressures are gauge pressures and are expressed in Mega

38、 Pascal (1 MPa = 10 bar). SOURCE: EN 671-1:2012 3.7 shut-off nozzle component, at the end of the hose, used to direct and control the discharge of water SOURCE: EN 671-1:2012 4 Requirements 4.1 General Conformity with the requirements given in this Clause 4 shall be verified by testing in accordance

39、 with Clause 5. BS EN 671-2:2012EN 671-2:2012 (E) 7 4.2 Distribution of extinguishing media 4.2.1 Hose bore The inside diameter of the hose shall be maximum 52 mm. 4.2.2 Minimum flow rate The flow rates in jet and spray settings shall be according to Table 1. Table 1 Minimum flow rates and minimum K

40、-coefficient according to pressure Nozzle- or equivalent diameter Minimum flow rate Q l/min K-coefficient amm P = 0,2 MPa P = 0,4 MPa P = 0,6 MPa 9 65 92 113 4610 78 110 135 55 11 96 136 167 6812 102 144 176 72 13 120 170 208 85aFlow rate Q at a pressure P is related to the equation Q = K P10 , wher

41、e Q is in l/min and P is in MPa. 4.2.3 Effective throw range The effective throw ranges of the discharges at a pressure of 0,2 MPa shall not be less than as follows (as appropriate): a) jet discharge: 10 m; b) sheet spray discharge: 6 m; c) conical spray discharge: 3 m. 4.2.4 Spray discharge Nozzles

42、 with a spray setting shall give a spray angle as follows: a) sheet spray: 90 5; b) conical spray: not less than 45. 4.3 Operational reliability 4.3.1 Hose General The hose shall be lay-flat and according to EN 14540. BS EN 671-2:2012EN 671-2:2012 (E) 8 4.3.2 Shut-off nozzle 4.3.2.1 General The hose

43、 shall terminate in a shut-off nozzle, which shall give the following control settings: a) shut; b) spray; c) jet. It is recommended that the sequence should be as above with the spray setting between the shut setting and the jet setting. Any spray discharge shall be in the form of either a sheet sp

44、ray or a conical spray. Trigger operated shut-off nozzles shall be self closing. 4.3.2.2 Marking of control condition Rotary operated nozzles Rotary operated nozzles shall be marked to show the direction of closing and opening. 4.3.2.3 Marking of control conditions Lever and trigger operated nozzles

45、 Lever and trigger operated nozzles shall be marked to show the settings for: a) shut; b) spray; c) jet. 4.3.3 Shut-off nozzle Resistance to impact The nozzle shall not break or show any visible leakage. 4.3.4 Shut-off nozzle Operating torque The torque necessary to operate the nozzle to each contro

46、l setting (i.e. operating, spray, jet or flow rate control) at maximum working pressure shall not exceed 7 Nm. 4.3.5 Inlet stop valve A manual stop valve shall be fitted to the hose system. The valve shall be screw down or other slow-opening type. The inlet shall be threaded according to ISO 7-1. Th

47、e inlet and outlet shall form an angle of not less than 90 and not more than 135. The valve shall be closed by turning the handle in a clockwise direction and the direction of opening shall be marked. When tested in accordance with ISO 5208 for a maximum working pressure of 1,2 MPa the valve shall c

48、onform to the appropriate requirements. BS EN 671-2:2012EN 671-2:2012 (E) 9 4.3.6 Hydraulic properties Resistance to internal pressure Hose assemblies shall be designed for the following pressures: a) maximum working pressure: 1,2 MPa; b) test pressure: 2,4 MPa; c) minimum burst pressure: 4,2 MPa. W

49、hen tested in accordance with ISO 5208 for a maximum working pressure of 1,2 MPa the valve shall conform to the appropriate requirements. 4.3.7 Hydraulic properties Security of couplings Hose assemblies shall not leak when tested to the test pressure in accordance with Annex F. 4.4 Ability to pull out the ho