SVENSK STANDARD SS-EN 1361:2004 Fastställd 2004-08-13 Utgåva 2 Slang och slangledningar av gummi för flygbensin Krav Rubber hoses and hose assemblies for aviation fuel handling Specification ICS 49.100 Språk: engelska Publicerad: september 2004 Copyright SIS. Reproduction in any form without permission is prohibited.
Europastandarden EN 1361:2004 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN 1361:2004. Denna standard ersätter SS-EN 1361, utgåva 1. The European Standard EN 1361:2004 has the status of a Swedish Standard. This document contains the official English version of EN 1361:2004. This standard supersedes the Swedish Standard SS-EN 1361, edition 1. Upplysningar om sakinnehållet i standarden lämnas av SIS, Swedish Standards Institute, telefon 08-555 520 00. Standarder kan beställas hos SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard. Postadress: SIS Förlag AB, 118 80 STOCKHOLM Telefon: 08-555 523 10. Telefax: 08-555 523 11 E-post: sis.sales@sis.se. Internet: www.sis.se
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 1361 July 2004 ICS 49.100 Supersedes EN 1361:1997 English version Rubber hoses and hose assemblies for aviation fuel handling - Specification Tuyaux et flexibles en caoutchouc pour transfert de carburant pour aviation - Spécification Gummischläuche und -schlauchleitungen für die Flugzeugbetankung - Anforderungen This European Standard was approved by CEN on 1 April 2004. 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 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, 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 same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1361:2004: E
Contents page Foreword... 4 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 3.1 electrically bonded hose/hose assembly... 6 3.2 electrically conductive hose/hose assembly... 6 4 Classification... 6 5 Service reeling diameter... 6 6 Materials & Construction... 7 6.1 Hoses... 7 6.2 Hose assemblies... 7 7 Dimensions... 8 7.1 Internal diameters and tolerances... 8 7.2 Thickness... 8 7.3 Concentricity... 8 7.4 Tolerance on length... 8 7.5 Mass per unit length of hose... 8 8 Physical properties... 9 8.1 Rubber compounds... 9 9 Finished hose & hose assemblies... 10 10 Electrical properties... 12 10.1 Type B and type E (electrically bonded)... 12 10.2 Types C & F (electrically conductive incorporating a semi-conductive cover compound)... 12 11 Type approval... 13 12 Frequency of testing... 13 13 Marking... 13 13.1 Hoses... 13 13.2 Hose assemblies... 13 14 Test report... 14 15 Cleanliness... 14 16 Protection for dispatch and storage... 14 Annex A (normative) Method for determination of fuel-soluble matter... 14 A.1 Procedure... 14 A.2 Expression of results... 15 Annex B (normative) Method of test for cold embrittlement...16 2
Annex C (normative) Method for determination of adhesion between components... 17 C.1 Dry adhesion... 17 C.2 Adhesion after contact with fuel... 17 Annex D (normative) Method for determination of resistance to fuel contamination... 18 D.1 Principle... 18 D.2 Procedure... 18 D.3 Expression of results... 18 Annex E (normative) Method of test for flexibility at 20 C... 19 Annex F (normative) Method of test for flexibility at -30 C... 20 Annex G (normative) Method of test for crush recovery... 21 G.1 Apparatus... 21 G.1.1 Apparatus 1... 21 G.1.2 Apparatus 2... 21 G.2 Test piece... 21 G.3 Conditioning of test pieces... 21 G.4 Procedure... 21 Annex H (normative) Method for determination of cyclic kinking resistance... 22 Annex I (normative) Flammability test... 23 I.1 Method... 23 I.2 Assessment... 23 Annex J (normative) Hydrostatic tests... 25 J.1 Pressure tests on hose lengths and/or hose assemblies... 25 J.1.1 Working pressure test... 25 J.1.2 Proof pressure test... 25 J.2 Bursting pressure test on hose lengths... 25 Annex K (normative) Method of test for vacuum resistance... 26 K.1 General... 26 K.2 Types B & C only... 26 K.3 Types B & C only... 26 K.4 Type E only... 26 K.5 Type F only... 26 Annex L (normative) Method of test for security of coupling attachment... 28 L.1 Apparatus... 28 L.2 Procedure... 28 L.3 Hose couplings... 28 Annex M (normative) Frequency of testing... 29 Annex N (informative) Production acceptance tests... 31 Annex O (informative) Recommended practice for hose flushing and handling... 32 O.1 Flushing... 32 O.2 Handling... 32 O.3 Inspection... 32 O.4 Replacement... 33 O.5 Hose re-coupling recommended practice...33 Annex P (informative) Method of determining torque value... 34 3
Foreword This document (EN 1361:2004) 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 by endorsement, at the latest by January 2005, and conflicting national standards shall be withdrawn at the latest by January 2005. This document supersedes EN 1361:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 4
1 Scope This document specifies the dimensions, construction and requirements for four types of hoses and hose assemblies for use in all operations associated with the ground fuelling and de-fuelling of aircraft. All four types of hose are designed for: a) use with petroleum fuels, having an aromatic hydrocarbon content not exceeding 30 % by volume; b) operation within the temperature range of 30 C to +65 C and are to be undamaged by climatic conditions of -40 C to +70 C when stored in static conditions; c) operating up to 20 bar maximum working pressure, including surges of pressure which the hose can be subjected to in service. NOTE 1 Type C hoses are intended for general pressure application on all vehicles used for into plane fuelling. It can also be used for vehicle/rail car loading and discharge where excessive vacuum does not occur. NOTE 2 Type F hoses can be used for into-plane delivery applications on vehicles that are also used for de-fuelling at high flow rates, where Type C hoses are not suitable. NOTE 3 Types E & F hoses can also be used for vehicle/rail, car loading and discharge, for trailer to fueller transfer and for elevation platform supply (riser) to provide greater kink resistance. 2 Normative references The following referenced documents are indispensable for theapplication of this document. For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies. 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 1402:1994) EN ISO 4671, Rubber and plastics hose and hose assemblies - Methods of measurement of dimensions (ISO 4671:1999) EN ISO 4672, Rubber and plastics hoses - Sub-ambient temperature flexibility tests (ISO 4672:1997) EN ISO 6246, Petroleum products - Gum content of light and middle distillate fuels - Jet evaporation method (ISO 6246:1995) EN ISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance (ISO 8031:1993) EN ISO 8330, Rubber and plastics hoses and hose assemblies - Vocabulary (ISO 8330:1998) ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 188, Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests ISO 1817:1999, Rubber, vulcanized Determination of the effect of liquids ISO 4649, Rubber, vulcanized or thermoplastic - Determination of abrasion resistance using a rotating cylindrical drum device 5
3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330 and the following apply. 3.1 electrically bonded hose/hose assembly hose/hose assembly that uses a metallic wire connection to conduct static electricity 3.2 electrically conductive hose/hose assembly hose/hose assembly that is capable of conducting static electrical charges, using a conductive rubber layer, without the use of a metallic wire 4 Classification Hoses for this application are classified into four types and two grades according to their construction and electrical properties. Type Grade Construction B M Electrically bonded, incorporating at least two low resistance electrically bonding wires and a conductive cover compound C Ω Electrically conductive, incorporating a conductive cover compound E M Electrically bonded, incorporating at least one metallic wire helix, with enhanced de-fuelling capability, at least two low-resistance electrically conductive wires and a conductive cover compound F Ω Electrically conductive, incorporating at least one non-electrically conductive non-metallic helix and conductive cover compound 5 Service reeling diameter Hoses shall be designed for operation on equipment fitted with hose reels of the diameters given in Table 1. NOTE These hoses remain substantially circular in cross section when reeled on drums (see Table 1) and should not be confused with hoses of the collapsible type that are intended to be reeled flat. 6
Table 1 Service reeling diameters Nominal bore Minimum external diameter of reeling drum used in service mm 19 225 25 300 32 375 38 450 50 550 63 600 75 600 76 600 100 900 101 900 6 Materials & Construction 6.1 Hoses If a hose is built and vulcanized on a mandrel, particulate type release agents shall not be used. A hose shall be uniform in quality, free from porosity, air holes, foreign inclusions and other defects. A hose shall comprise: A lining of synthetic rubber resistant to petroleum fuel. A reinforcement of layers of woven, braided or spiral wound textile material. Type E shall incorporate one or more metallic wire helix or helices. Type F shall incorporate one or more non-metallic helix or helices. A cover of synthetic rubber shall be conductive, resistant to abrasion, outdoor exposure and petroleum fuel. Types B & E shall also incorporate low resistance electrically conductive wires to enable the hoses to be electrically bonded to the couplings when manufacturing a hose assembly. NOTE A hose cover may have a shallow cloth marked finish. 6.2 Hose assemblies In order to produce the required electrical properties, the method of attachment of the couplings shall be in accordance with Clause 10. 7
7 Dimensions 7.1 Internal diameters and tolerances When measured in accordance with EN ISO 4671 the internal diameters and tolerances shall comply with the values given in Table 2. Table 2 Nominal bore, internal diameters and tolerances 7.2 Thickness Nominal bore Internal diameter mm Tolerance mm 19 19,0 ± 0,8 25 25,0 32 32,0 38 38,0 50 50,0 ± 1,2 63 63,0 75 75,0 76 76,0 100 100,0 ± 1,6 101 101,5 When measured in accordance with EN ISO 4671 the thickness of the lining for hoses of all internal diameters shall not be less than 1,6 mm. For hoses of nominal bore less than 50, the thickness of the cover shall not be less than 1,6 mm. For hoses of nominal bore 50 and above, the thickness of the cover shall not be less than 2,0 mm. 7.3 Concentricity When determined in accordance with EN ISO 4671, the concentricity, based on a total indicator reading between the internal diameter and the outside surface of the cover, shall not exceed 1 mm. 7.4 Tolerance on length The tolerance on the measured length of hose or hose assembly shall be ± 1 %. 7.5 Mass per unit length of hose The maximum mass per unit length shall comply with the values given in Table 3. 8
Table 3 Mass per unit length of hoses Nominal bore Type B and type C Kg/m Type E and type F Kg/m 19 0,9 1,1 25 1,1 1,5 32 1,4 1,9 38 1,7 2,2 50 2,7 3,0 63 3,5 4,0 75 4,0 4,7 76 4,0 4,7 100 6,5 7,5 101 6,5 7,5 8 Physical properties 8.1 Rubber compounds The physical properties of the rubber compounds used for the lining and cover shall comply with the values given in Table 4, when tested by the methods listed in Table 4. Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets, except for cold embrittlement and abrasion resistance tests which shall be carried out on moulded test pieces vulcanized to the same state as the hose. Table 4 Physical properties of rubber compounds Property Unit Requirement Method of test Lining Cover Tensile strength, min. MPa 7,0 7,0 ISO 37 (dumb-bell test pieces) Elongation at break, min. % 250 300 ISO 37 (dumb-bell test pieces) Swelling in fuel, max. % 50 75 8.2 of ISO 1817:1999 (48 h at 40 C in liquid B) Fuel-soluble matter, max. % 4,0 Not Annex A Cold embrittlement No No cracking Annex B cracking Abrasion resistance, max mm 3 Not 140 Method A of ISO 4649 applicable Ageing % ISO 188 (7 days at 70 C) (airoven method) Tensile strength change, max. ± 30 ± 30 Elongation at break change, max. ± 30 ± 30 9