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1、BRITISH STANDARD BS EN 671-2:1995 Fixed firefighting systems Hose systems Part 2: Hose systems with lay-flat hose The European Standard EN 671-2:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN
2、671-2:1995 This British Standard, having been prepared under the direction of the Fire Standards Policy Committee (FSM/-), was published under the authority of the Standards Board and comes into effect on 15 May 1995 BSI 03-1999 The following BSI references relate to the work on this standard: Commi
3、ttee reference FSM/18/11 Draft for comment 92/41462 DC ISBN 0 580 23817 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee FSM/18, Fixed firefighting systems, to Subcommittee FSM/18/11, Fixed firefighting systems: Hose ree
4、l systems, upon which the following bodies were represented: Association of Metropolitan Authorities British Fire Protection Systems Association Ltd. British Fire Services Association Chief and Assistant Chief Fire Officers Association Convention of Scottish Local Authorities Fire Brigades Union Fir
5、e Extinguishing Trades Association Home Office Institution of Fire Engineers London Fire and Civil Defence Authority Loss Prevention Council Trades Union Congress Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006,
6、Uncontrolled Copy, (c) BSI BS EN 671-2:1995 BSI 03-1999i Contents Page Committee responsibleInside front cover National forewordii Foreword2 Text of EN 671-23 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BS
7、I BS EN 671-2:1995 ii BSI 03-1999 National foreword This British Standard has been prepared under the direction of the Fire Standards Policy Committee and it is the English version of EN 671-2:1994 Fixed firefighting systems Hose systems Part 2: Hose systems with lay-flat hose, published by the Euro
8、pean Committee for Standardization (CEN). EN 671-2 was produced as a result of international discussions in which the United Kingdom took an active part. There is no existing equivalent British Standard and equipment of this type is not widely used in the UK, hose reels being usually preferred. Atte
9、ntion is drawn to the related standard EN 671-1:1994 Fixed firefighting systems Hose systems Part 1: Hose reels with semi-rigid hose. This corresponds to BS 5274, which is withdrawn. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards
10、 are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross references International standardCorresponding British Standard ISO 7-1:1982BS 21:1985 Specification for pipe threads for tubes and fittings where press
11、ure-tight joints are made on the threads (metric dimensions) ISO 9227:1990BS 7479:1991 Method for salt spray corrosion test in artificial atmospheres ISO 3864:1984BS 5378-1:1980 Specification for colour and design ISO 5208:1982BS 6755-1:1986 Specification for production pressure testing requirements
12、 ISO/DIS 4892-2.2BS 2782 Methods of testing plastics Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title pages, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendment
13、s incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 671-2 November 1994 ICS 13.220.30 Descriptors: Fire
14、fighting, fire equipment, fire hoses, reels, cocks, specifications, hydraulic properties, flow rate, tests, marking English version Fixed fire fighting systems Hose systems Part 2: Hose systems with lay-flat hose Installations fixes de lutte contre lincendie Systmes quips de tuyaux Partie 2: Postes
15、deau muraux, quips de tuyaux plats Ortfeste Lschanlagen Wandhydranten Teil 2: Schlauchanlagen mit Flaschschluchen This European Standard was approved by CEN on 1994-11-10. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea
16、n Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, F
17、rench, 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland
18、, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Bruss
19、els 1994 Copyright reserved to CEN members Ref No. EN 671-2:1994 E Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 671-2:1994 BSI 03-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 191 “Fixed fir
20、efighting systems”, the secretariat of which is held by BSI, and through Working Group WG 9 “Hose systems”. EN 671 has the general title Hose systems and is in two parts, this Part and Part 1: Specification for hose reels with semi-rigid hose, and is included in a series of European Standards coveri
21、ng firefighting systems. 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 May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. Users of this European Standard
22、are advised to consider the desirability of independent certification of product conformity with this European Standard based on testing and continuing surveillance, which may be coupled with assessment of a suppliers quality system against EN 29001, EN 29002 and/or EN 29003 as appropriate (see Anne
23、x G). Annex A, Annex B, Annex C, Annex D and Annex E are normative. Annex F and Annex G are informative. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, France, Germany, Greece, Iceland, Ireland, Ita
24、ly, Luxembourg, Netherlands, Portugal, Spain, Switzerland, United Kingdom. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Definitions3 4Designation3 5Hose and hose assemblies4 6Shut-off nozzle4 7Inlet stop valve4 8Cabinets4 9Materials5 10Hydraulic properties5 11Colour, symbols
25、, marking and instruction6 12Assessment of conformity6 Annex A (normative) Procedure for assessment of conformity7 Annex B (normative) Test method for resistance to corrosion of coated parts7 Annex C (normative) Ageing test for plastics materials7 Annex D (normative) Test method for resistance to co
26、rrosion on waterways8 Annex E (normative) Test methods for nozzle 8 Annex F (informative) Water supply10 Annex G (informative) Bibliography10 Figure B.1 Corrosion test piece7 Figure E.1 Arrangement for impact test9 Figure E.2 Test arrangement for measurement of spray angle9 Figure E.3 Test arrangeme
27、nt for measurement of flow rate10 Figure E.4 Test arrangement for measurement of throw range10 Table 1 Maximum operating torque of nozzle control4 Table 2 Minimum flow rates and minimum K-coefficient according to pressure5 Table A.1 Test sequence7 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov
28、09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 671-2:1994 BSI 03-19993 Introduction Hose systems in proper condition provide a very effective firefighting facility with a continuous supply of water available immediately. The requirements of this standard have been framed to ensure that ho
29、se systems can be operated efficiently by one person and that such systems will have a long service life and will not need excessive maintenance. 1 Scope This European Standard specifies requirements and methods of test for construction and performance for fire hose systems with lay-flat hose for in
30、stallation in buildings and other construction works, permanently connected to a water supply, for use by the occupants. Its requirements may apply in general for other applications, for example in marine applications or in aggressive environments, but additional requirements may be necessary in suc
31、h cases. For convenient application in conformity testing the normative annexes of this standard are arranged, so that Annex A gives the sequence of testing for conformity assessment and Annex B, Annex C, Annex D and Annex E are in the correct sequence for testing. Annex F gives recommendations for
32、the flow rate, pressure and capacity of water supplies. NOTEAll pressures are gauge pressures and are expressed in megapascals. 1 MPa = 10 bar. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references ar
33、e cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest e
34、dition of the publication referred to applies. ISO 7-1:1982, Pipe threads where pressure-tight joints are made on the threads Part 1: Designation, dimensions and tolerances. ISO 9227:1990, Corrosion tests in artificial atmospheres Salt spray tests. ISO 3864:1984, Safety colours and signs. ISO 5208:1
35、982, Industrial valves Pressure testing of valves. ISO/DIS 4892-2.2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon arc sources. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 fire hose system; hose system firefighting appliance consistin
36、g essentially of cabinet or cover, hose support, manual stop valve, lay-flat hose with couplings, shut-off nozzle 3.2 cabinet box to protect the hose system against environmental or physical damage 3.3 hose support device used to hold the hose 3.4 lay-flat hose hose which is flat-sectioned except wh
37、en it is internally pressurized 3.5 coupling device used to connect the hose to the valve and to the shut-off nozzle 3.6 shut-off nozzle component at the end of the hose used to direct and control the discharge of water 4 Designation 4.1 General A hose system shall be designated according to its met
38、hod of mounting (see 4.2), the form of hose support (see 4.3), the diameter of hose in millimetres and the length of hose in metres. NOTEThus the hose system in a cabinet for surface mounting, with the hose on a reel, fitted with 52 mm diameter hose of length 20 m, is designated: EN671-2C-1/52-20. 4
39、.2 Method of mounting A hose system shall be designed for mounting in one of the following forms: form A: in a wall recess with cover; form B: in a cabinet in a wall recess; form C: in a cabinet for surface mounting. 4.3 Hose support 4.3.1 General The hose support shall be one of the following types
40、: type 1: rotating reel; type 2: cradle with the hose double coiled; type 3: hose basket with the hose flaked. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:40:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 671-2:1994 4 BSI 03-1999 4.3.2 Type 1 The reel shall rotate around a spindle so
41、 that the hose can be withdrawn freely. The inside drum shall have a minimum diameter of not less than 70 mm and shall have a slit not less than 20 mm wide across the full diameter of the drum into which the folded hose is located. 4.3.3 Type 1 and type 3 Type 1 and 3 supports if fixed to the cabine
42、t shall allow a swing to a position at 90 to the plane of the back of the cabinet. The turning axis shall be vertical. 5 Hose and hose assemblies 5.1 General The hose shall be lay-flat. 5.2 Hose bore The nominal diameter shall not exceed 52 mm. 5.3 Maximum length The nominal length of the hose shall
43、 not exceed 20 m. 5.4 Couplings 5.4.1 General The coupling shall be as specified by, or agreed with, the purchaser. NOTEIt is normally appropriate for couplings to comply with the national standard of the country in which the equipment is to be installed. 5.4.2 Coupling bindings The coupling shall b
44、e bound to the hose by means of an even pressure over the complete perimeter of the hose against the coupling shank. 6 Shut-off nozzle 6.1 General The hose shall terminate in a shut-off nozzle which shall give the following control settings: a) shut; and. b) spray; and/or c) jet. NOTEWhen both spray
45、 and jet are provided 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 spray or a conical spray. 6.2 Resistance to impact The nozzle shall not break or show any visib
46、le leakage when tested in accordance with E.1. 6.3 Operating torque The torque necessary to operate the nozzle to each control setting at maximum working pressure shall not exceed the appropriate value given in Table 1 when determined after testing in accordance with E.2. Table 1 Maximum operating t
47、orque of nozzle control 6.4 Marking of control settings 6.4.1 Rotary operated nozzles shall be marked to show the direction of closing and opening. 6.4.2 Lever operated nozzles shall be marked to show the settings for: a) shut; and b) spray; and/or jet. 7 Inlet stop valve 7.1 A manual stop valve sha
48、ll be fitted to the hose system. NOTEIt is normally appropriate for valves and valve connections to comply with national standards of the country in which the equipment is to be installed. 7.2 The valve shall be screwdown or other slow-opening type. 7.3 The inlet shall be threaded according to ISO 7
49、-1. 7.4 The inlet and outlet shall form an angle of not less than 90 and not more than 135. 7.5 The valve shall be closed by turning the handle in a clockwise direction and the direction of opening shall be marked. 7.6 When tested in accordance with ISO 5208 for a maximum working pressure of 1,2 MPa the valve shall conform to the appropriate requirements of ISO 5208. 8 Cabinets NOTECabinets may also be used to contain other firefighting equipment, provided that the cabinet is of sufficient size an
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