1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1761:1999 The Europ
2、ean Standard EN 1761:1999 has the status of a British Standard ICS 23.040.70; 75.200 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Rubber hoses and hose assemblies for fuel truck delivery SpecificationThis British Standard, having been prepared under the direction of the Sec
3、tor Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 June 1999 BSI 06-1999 ISBN 0 580 32447 8 BS EN 1761:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the Engli
4、sh language version of EN 1761:1999. The UK participation in its preparation was entrusted by Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies, to Subcommittee PRI/66/1, Industrial, chemical and petrochemical applications, which has the responsibility to: aid enquire
5、rs to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on thi
6、s subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”
7、, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself conf
8、er immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue
9、 de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1761:1999 E EUROPEAN STANDARD EN 1761 NORME EUROPE ENNE EUROPA ISCHE NORM February 1999 ICS 23.040.70; 75.200 English version Rubber hoses and ho
10、se assemblies for fuel truck delivery Specification Tuyaux et flexibles en caoutchouc pour la livraison dhydrocarbures liquides par camions-citernes Spe cification Gummischla uche und schlauchleitungen fu r Tankwagen Spezifikation This European Standard was approved by CEN on 6 August 1999. CEN memb
11、ers 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 on applicati
12、on to the Central Secretariat 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 Central Secretariat has the s
13、ame status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1761:1999 BSI
14、 06-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 218, Rubber and plastics hoses and hose assemblies, the 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
15、 by endorsement, at the latest by August 1999, and conflicting national standards shall be withdrawn at the latest by August 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria
16、, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is based on ISO 2929, BS 3492 and the German military standard VG 95955. Contents Page Foreword 2
17、 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Types 3 5 Materials and construction 3 6 Dimensions 4 7 Physical properties 4 8 Test for security of coupling attachment 4 9 Electrical resistance 5 10 Application of tests 5 11 Marking 7 Annex A (normative) Test method for adhesion between compo
18、nents 8 Annex B (normative) Test method for flexibility at 208C8 Annex C (normative) Test method for flammability 8 Annex D (normative) Test method for security of coupling attachment 9Page 3 EN 1761:1999 BSI 06-1999 1 Scope This European Standard specifies the requirements for two types of rubber h
19、oses and rubber hose assemblies for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of 10 bar (1,0 MPa). Both types of hose are designed for: a) use with hydrocarbon fuels, having an aromatic hydrocarbon content not exceeding 50 % by volume and containing oxygenated
20、 compounds up to 15 %; b) operation within the temperature range of2308C to +708C, undamaged by climatic conditions of2508Ct o7 08 C when stored in static conditions. NOTE Hoses for use at temperatures lower than2308C should be the subject of discussion between manufacturer and end users. This stand
21、ard is not applicable to hoses and hose assemblies for LPG, aviation fuel systems, fuel station systems and marine applications. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the
22、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 by amendment or revision. For undated references latest edition of the publication
23、 referred to applies. EN 21746, Rubber or plastics hoses and tubing Bending test. (ISO 1746:1983) EN 24671, Rubber and plastics hoses and hose assemblies Methods of measurements of dimensions. (ISO 4671:1984) EN 24672, Rubber and plastics hoses Sub-ambient temperature flexibility tests. (ISO 4672:19
24、88) EN 27326, Rubber and plastics hoses Assessment of ozone resistance under static conditions. (ISO 7326:1991) EN 28033, Rubber and plastics hose Determination of adhesion between components. (ISO 8033:1991) EN ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testing. (ISO 1402:1
25、994) EN ISO 7233, Rubber and plastic hoses and hose assemblies Determination of suction resistance. (ISO 7233:1991) EN ISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical properties. (ISO 8031:1993) ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile
26、stress-strain properties. ISO 188, Rubber, vulcanized Accelerated ageing or heat-resistance tests. ISO 1817:1985, Rubber, vulcanized Determination of the effect of liquids. ISO 4649, Rubber Determination of abrasion resistance using a rotating cylindrical drum device. ISO 8330, Rubber and plastics h
27、oses and hose assemblies Vocabulary. 3 Definitions For the purposes of this standard, the definitions given in ISO 8330 apply. 4 T ypes Hoses shall be one of the following types: a) type D: delivery hose; b) type SD: suction and delivery hose, helix reinforced. Both these types can be either: 1) ele
28、ctrically bonded, designated and marked “M” type; or 2) electrically conductive, using a conductive rubber layer, designated and marked “V” type. 5 Materials and construction If mandrel built, particulate type, release agents shall not be used. The hose shall be uniform in quality and free from poro
29、sity, air holes, foreign inclusions and other defects. The hose shall consist of the following: a) a lining of synthetic rubber resistant to hydrocarbon fuels; b) a reinforcement of layers of woven, braided or spirally wound textile material; c) an embedded helix reinforcement (type SD only); d) two
30、 or more low resistance electrical bonding wires (type “M” only); e) an outer cover of synthetic rubber, resistant to abrasion, outdoor exposure and hydrocarbon fuels.Page 4 EN 1761:1999 BSI 06-1999 Table 1 Dimensions Nominal bore Internal diameter Tolerance Outside diameter Tolerance Minimum extern
31、al diameter of reeling drum used in service Minimum bend radius mm mm mm mm mm mm 19 19,0 0,5 31,0 1,0 250 125 25 25,0 37,0 300 150 32 32,0 44,0 350 175 38 38,0 51,0 450 225 50 50,0 0,7 66,0 1,2 550 275 51 51,0 67,0 550 275 63 63,0 0,8 79,0 600 300 75 75,0 91,0 700 350 76 76,0 92,0 700 350 100 100,0
32、 116,0 1,6 450 101 101,5 118,0 N.A 450 150 150,0 1,6 170,0 2,0 N.A 750 NOTE Other diameters than listed in the table can be agreed with the manufacturer. N.A = not applicable. 6 Dimensions 6.1 Nominal bore, internal diameters, outside diameters, service reeling diameters, minimum bend radius When me
33、asured in accordance with EN 24671 the internal diameter and outside diameter and their tolerances shall comply with the values given in Table 1. When tested by the method described in EN 21746, the value of the minimum bend radius shall be as given in Table 1. 6.2 Concentricity When determined in a
34、ccordance with EN 24671, the concentricity, based on a total indicator reading between the internal diameter and the outside surface of the cover, shall be less than or equal to 1,0 mm for hoses of nominal bore up to and including 76, and 1,5 mm for hoses of nominal bore greater than 76. 6.3 Toleran
35、ces in length The tolerance on the measured length of hose or hose assembly shall be 1% . 6.4 Minimum thickness of lining and cover The minimum thickness of the lining of all hoses shall be 1,6 mm. For hoses of nominal bore up to and including 50 the minimum thickness of the cover shall be 1,6 mm. F
36、or hoses of nominal bore greater than 50 the minimum thickness of the cover shall be 2,0 mm. 7 Physical properties 7.1 Rubber compounds The physical properties of the compounds used for the lining and cover shall comply with the values given in Table 2, when tested by the methods listed in Table 2.
37、Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets. 7.2 Finished hose When tested by the methods listed in Table 3, the physical properties of the finished hose shall comply with the values given in Table 3. 8 Test for security of coupling attachmen
38、t When tested in accordance with annex D hose assemblies shall show no leakage nor movement of the coupling out of the hose. There shall be no visible cuts or other damage to the hose lining.Page 5 EN 1761:1999 BSI 06-1999 Table 2 Physical properties of rubber compound Property Unit Requirements Tes
39、t methods Lining Cover 1) Tensile strength min. MPa 7,0 7,0 ISO 37 (dumb-bell test piece) 2) Elongation at break min. % 250 250 ISO 37 (dumb-bell test piece) 3) Swelling in fuel max. % 50 8.2 of ISO 1817:1985, (72 h at 408C in liquid 3) 100 ISO 1817:1985, 8.2 48 h at 408Ci n liquid B) 4) Abrasion re
40、sistance max. mm 3 180 Method A of ISO 4649 5) Ageing ISO 188 Tensile strength % 30 30 (7 days at 708C, air-oven method) max. change from the original value Elongation at break max. change from the original value % 30 30 9 Electrical resistance Electrical resistance of hose and hose assemblies can b
41、e obtained by two methods. 1) By incorporating two low resistance bonding wires into the hose construction. These shall be spirally applied and shall be positioned in such a way to cross uniformly; When attaching fittings to this hose, the bonding wires shall be folded into the hose bore, positioned
42、 between the lining and the fitting tail and extended approximately 1/3rd of the length of the fitting tail into the bore. When tested in accordance with ISO EN 8031 the resistance along the bonding wires, in the case of hose, or the resistance between fittings, in the case of hose assemblies, shall
43、 not exceed 13 10 2 V per length. When obtaining electrical continuity by this method the hose shall be marked with the symbol “M”. 2) Incorporating electrically conducting materials in the hose construction. When attaching fittings to this hose, an adequate connection between the end-fittings and t
44、he conductive layer shall be obtained. When tested in accordance with ISO EN 8031, the resistance along the conductive layer, in the case of hose or the resistance between the fittings, in the case of hose assemblies, shall not exceed 13 10 6 V per length. When obtaining electrical resistance by thi
45、s method the hose shall be marked with the symbol “V”. During and after subjection to the hydrostatic tests as described in EN ISO 1402, the electrical continuity of each hose shall be maintained from end to end and electrical continuity of each hose assembly shall be maintained from one coupling to
46、 the other. NOTE Electrical conductivity in Type SD cannot be obtained by only connecting to the helix. 10 Application of tests 10.1 Hoses The minimum test frequency for production and routine tests is given in Table 4. Type approved is obtained by the manufacturers supplying evidence that all requi
47、rements of this standard are met by his method of manufacture and hose design. The tests shall be repeated at a maximum of five year intervals, or whenever a change in the method of manufacture or materials used, occurs. Production acceptance tests are carried out on a batch basis. Routine tests are
48、 carried out on each finished length of hose. 10.2 Hose assemblies If a statutory test frequency is not specified, the end user shall establish this test frequency, taking into account the operation conditions. This shall generally be six months, but no longer than one year.Page 6 EN 1761:1999 BSI 0
49、6-1999 Table 3 Physical properties of finished hose Property Unit Requirements Test method 1) Proof test pressure min bar 15 EN ISO 1402 No leakage or other signs of weakness 2) Change in length: % a) type D: 0 to +8 EN ISO 1402 max. b) type SD: 0 to +10 at proof test pressure at20,8 bar (vacuum) c) type SD:22 3) Change in twist at proof max. test pressure /m 8 EN ISO 1402 4) Resistance to vacuum (type SD only) at vacuum 20,8 bar for 10 min (see NOTE) No structural damage EN ISO 7233 5)
