1、BRITISH STANDARD BS3492:1987 Specification for Road and rail tanker hoses and hose assemblies for petroleum products, including aviation fuels UDC 621.643.3:629.065:665.7BS3492:1987 This British Standard, having been prepared under the directionof the Rubber StandardsCommittee, was published under t
2、he authority ofthe Board of BSI and comes intoeffect on 27 February 1987 BSI 06-1999 First published April 1962 First revision May 1972 Second revision February 1987 The following BSI references relate to the work on this standard: Committee reference RUM/9 Draft for comment 85/37493 DC ISBN 0 580 1
3、5564 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Rubber Standards Committee (RUM/-) to Technical Committee RUM/9 upon which the following bodies were represented: British Coal British Gas Corporation British Rubber Manufacturers As
4、sociation Chief and Assistant Chief Fire Officers Association Department of the Environment (Property Services Agency) Fire Extinguishing Trades Association Health and Safety Executive Home Office Institution of Fire Engineers London Fire Brigade London Transport Executive Malaysian Rubber Producers
5、 Research Association Ministry of Defence Society of Motor Manufacturers and Traders Limited Water Authorities Association The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Hydraulic Equipment Manufacturers British Railways B
6、oard Energy Industries Council Engineering Equipment and Materials Users Association Amendments issued since publication Amd. No. Date of issue CommentsBS3492:1987 BSI 06-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Types and classes 1 4 Cons
7、truction 1 5 Dimensions and tolerances 2 6 Hose mass 2 7 Pressure requirements 2 8 End fittings 2 9 Physical properties of the cover 2 10 Performance requirements (type approval tests) 3 11 Test certificate 4 12 Marking 4 Appendix A Bend test under pressure 5 Appendix B Fuel resistance test 5 Append
8、ix C Reeling test (types E and F only) 5 Appendix D Method for determination of fuel-soluble matter 5 Appendix E Fuel contamination test 5 Table 1 Nominal bores and tolerances 2 Table 2 Maximum mass of hoses 2 Table 3 Pressure ratings 2 Table 4 Minimum bend radii 3 Table 5 Crushing force 3 Table 6 E
9、xternal diameter of drum for reeling test 5 Publications referred to Inside back coverBS3492:1987 ii BSI 06-1999 Foreword This revision of this British Standard has been prepared under the direction of the Rubber Standards Committee and supersedes BS3492:1972 which is withdrawn. It is one of a serie
10、s of British Standards for various hoses and hose assemblies for the petroleum industry. It is important to note that class1 hoses are suitable for use with aviation fuels, whereas class2 hoses should not be used for this purpose. In order to take account of modern technological developments this Br
11、itishStandard is based on performance requirements. The principal changes from the1972 edition are as follows. a) The types have been designated A, AX, B, BX, C, D, E and F to distinguish them from types1,2 and3 in the previous edition. b) Types AX and BX which are composite hoses have been introduc
12、ed and so has type F which is a hose with controlled dilation for metered delivery. 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 itse
13、lf confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indica
14、ted in the amendment table on the inside front cover.BS3492:1987 BSI 06-1999 1 1 Scope This British Standard specifies requirements for rubber and plastics hoses and hose assemblies for carrying gasoline, kerosene, fuel and lubricating oils, including aviation fuels with an aromatic hydrocarbon cont
15、ent of not more than50%, at temperatures up to80C. All types are suitable for use with a vacuum not exceeding0.5 bar. Hoses of types A, AX, B, BX, C and D are for service as “dry” hoses, i.e.drained after use. NOTE 1For continuous service the manufacturer should be consulted. NOTE 2The attention of
16、the purchaser is drawn to clauses1, 3 and8. From each of these clauses the purchaser should clearly indicate his requirements and intentions to the manufacturer at the time of enquiry or order. NOTE 3The titles of the publications referred to in this standard are listed on the inside back cover. 2 D
17、efinitions For the purposes of this British Standard the definitions given in BS3558 apply, together with the following. 2.1 composite hose a non-vulcanized hose with construction as specified in4.2 for types AX and BX 2.2 type approval tests tests required to obtain type approval 2.3 routine tests
18、tests carried out on each finished length of hose or hose assembly 3 Types and classes 3.1 Types Hoses are designated as follows. 3.2 Classes Types A, AX, B and BX are divided into the following two classes: class1 for aviation and other uses; class2 for non-aviation use. 4 Construction 4.1 Hoses of
19、 types A, B, C, D, E and F shall consist of the following: a) an internal wire helix (types A and B only); b) an inner polymeric lining; c) a reinforcing layer or layers; d) two or more low resistance electrical bonding wires in hoses not containing a wire helix; e) an optional embedded helix of wir
20、e or other material; f) a polymeric cover; g) an externally applied armouring wire (types A and B only). 4.2 Hoses of types AX and BX shall consist of the following: a) an internal wire helix; b) a multi-ply wall of thermoplastics films and reinforcing fabrics in proportions that give the required p
21、hysical properties and provide a complete seal. NOTEThe film content may be built of tubular films. c) a cover consisting of fabric with an abrasion resistant polymeric coating; d) an external wire helix. 4.3 The lining of smooth bore hoses of types C, D, E and F shall be free from holes, porosity a
22、nd other defects when examined visually. NOTEFor hoses of types A, B, C, D, E and F, the lining and cover should be resistant to all petroleum liquids and should cause negligible discoloration of fluids carried by the hose. 4.4 The internal wire used in the construction of class1 hoses shall be made
23、 of aluminium and shall comply with BS1475, grade5154A or5056A. 4.5 Steel wire used for the internal helix shall comply with BS3592-1, have a tensile strength of not less than650 N/mm 2and be galvanized in accordance with the requirements of BS443. Type A Rough bore externally armoured hose principa
24、lly for gravity discharge with a maximum working pressure of3bar. Type AX Rough bore composite hose principally for gravity discharge with a maximum working pressure of3bar. Type B Rough bore externally armoured hose with a maximum working pressure of7 bar. Type BX Rough bore composite hose with a m
25、aximum working pressure of7 bar. Type C Smooth bore hose with smooth or corrugated exterior principally for gravity discharge with a maximum working pressure of3 bar. Type D Smooth bore hose with smooth or corrugated exterior with a maximum working pressure of7 bar. Type E Smooth bore reeling hose w
26、ith a maximum working pressure of7 bar. Type F Smooth bore reeling hose of controlled dilation for metered delivery with a maximum working pressure of7 bar.BS3492:1987 2 BSI 06-1999 4.6 Steel wire used for the embedded helix shall have a tensile strength of not less than650 N/mm 2and comply with BS3
27、592-1. 4.7 The electrical bonding wires shall be of a braided construction, spirally applied and fatigue resistant. 4.8 External armouring wire shall comply with BS3592-1, have a tensile strength of not less than650 N/mm 2and be galvanized in accordance with the requirements of BS443. The wire shall
28、 be secured at each end of the hose or hose assembly. 5 Dimensions and tolerances 5.1 Bore The bore of the hose shall comply with the nominal dimensions and tolerances given in Table 1 when measured in accordance with BS5173-101.1. Table 1 Nominal bores and tolerances 5.2 Tolerance on length When me
29、asured in accordance with BS5173-101.2 1) , the tolerance on length of hoses and hose assemblies shall be 1%. 5.3 Change in length at working pressure For all types the maximum change in length at working pressure shall be+10%,5% when measured in accordance with BS5173-101.2 1) . 6 Hose mass The mas
30、s of the hose excluding end fittings but including external armouring in the case of types A and B shall not exceed the values given in Table 2. Table 2 Maximum mass of hoses 7 Pressure requirements The maximum working pressure, proof pressure and minimum burst pressure of hoses shall be as given in
31、 Table 3. Table 3 Pressure ratings 8 End fittings End fittings shall be attached by wire binding, swaging, band clips or clamps. In all cases they shall be connected to the construction wire or bonding wires to provide electrical continuity. End fittings shall comply with10.3 and10.7. End fittings f
32、or class1 hoses shall be suitable for use with aviation fuels. 9 Physical properties of the cover 9.1 Hoses of types A, B, C, D, E and F 9.1.1 Resistance to liquids. When tested in accordance with the volumetric method described in BS903-A16:1971, using Liquid B, as described in Appendix A of that s
33、tandard, and immersing for48 1h at40 1 C, the cover shall have a volume change not greater than100%. 9.1.2 Resistance to ozone. When tested in accordance with BS5173-106.3 at a temperature of40 2 C for1681h, no cracking shall be visible when viewed at 2 magnification. Types A, AX, B, BX, C and D Typ
34、es E and F Permissible deviations mm 32 38 51 63 76 102 mm 25 32 38 51 mm 1.25 1.25 1.5 1.5 1.5 2.0 2.0 1) In preparation. Nominal bore Maximum mass Types A and AX Types B and BX Type C Type D Types E and F mm 25 32 38 51 63 76 102 kg/m 1.05 1.35 1.85 2.25 3.00 4.10 kg/m 1.80 2.10 2.75 3.65 4.90 6.7
35、0 kg/m 1.35 1.65 2.25 3.00 3.70 4.75 kg/m 1.95 2.40 3.00 4.10 5.20 8.20 kg/m 1.25 1.65 1.85 2.25 Pressure Types A, AX andC Types B, BX, D, E and F Maximum working Proof Minimum burst bar 3 4.5 12 bar 7 10.5 28BS3492:1987 BSI 06-1999 3 9.2 Hoses of types AX and BX The adhesion between the cover mater
36、ial and its abrasion resistant coating shall be not less than2.0kN/m when tested in accordance with BS3424-7. 10 Performance requirements (typeapproval tests) 10.1 General To obtain type approval,10.2 to10.14 shall be complied with. The tests described in10.2, 10.4 and10.7 shall be carried out as ro
37、utine tests except for the burst pressure in10.2 (seeclause11). 10.2 Hydrostatic When tested in accordance with BS5173-102.1, the hose or hose assembly shall comply with the requirements of Table 3 and shall show no cracks or leaks at proof pressure. 10.3 Electrical continuity after bend test under
38、pressure When tested in accordance with Appendix A, the hose assembly shall show no sign of failure or loss of electrical continuity. 10.4 Vacuum resistance When tested in accordance with the appropriate method described in BS5173-102.9 using a vacuum of0.5 bar, the hose or hose assembly shall show
39、no signs of damage or failure. 10.5 Adhesion (types A, B, C, D, E and F) When tested in accordance with the appropriate method described in BS5173-103.1, the adhesion between lining and reinforcement, between layers of reinforcement and between cover and reinforcement shall be not less than2.0 kN/m.
40、 NOTEThe adhesion is not tested for types AX and BX. 10.6 Fuel resistance When tested in accordance with Appendix B, the hose shall comply with10.2 and10.4. 10.7 Electrical continuity When tested in accordance with method1 of clause5 of BS5173-4:1977 the hose or hose assembly shall exhibit satisfact
41、ory electrical continuity as described therein. 10.8 Bending test Using the appropriate method described in BS5173-103.5, hoses shall be capable of bending to the minimum bend radii shown in Table 4 without damage. Table 4 Minimum bend radii 10.9 Low temperature flexibility When tested in accordance
42、 with the appropriate method described in BS5173-6 at 25 1 C and bent to the radius specified in Table 4, the hose shall show no signs of cracking or failure. The same hose shall then be tested at proof pressure as specified in Table 3. If the hose fails the proof pressure test, it shall be deemed t
43、o have failed the low temperature flexibility test. 10.10 Crush test (types A, AX, B, BX, C and D) When tested in accordance with the method described in BS5173-3 using the force given in Table 5, the outside diameter of the hose under the applied force shall be not less than80% of the original outs
44、ide diameter and after release of the force the diameter shall return to not less than90% of the original outside diameter. Table 5 Crushing force 10.11 Reeling test (types E and F) When tested in accordance with Appendix C, the outside diameter of the coiled hose measured on the major axis shall no
45、t show an increase on the original outside diameter of more than10%. 10.12 Dilation test (type F) Using a test piece that has complied with the proof pressure given in Table 3, the dilation of the hose shall not exceed4% in volume when tested in accordance with clause5 of BS5173-2:1976 at a pressure
46、 of2 bar. Nominal bore Types A, AX and C Types B, BX and D Types E and F mm 25 32 38 51 63 76 102 mm 130 150 200 260 310 410 mm 190 230 310 380 460 560 mm 190 230 280 360 Nominal bore Crushing force mm 32 38 51 63 76 102 kN 0.9 1.0 1.1 1.45 1.45 1.45BS3492:1987 4 BSI 06-1999 10.13 Fuel-soluble matte
47、r When tested in accordance with Appendix D, the fuel-soluble matter shall be a maximum of3% of the total mass. 10.14 Fuel contamination When tested in accordance with Appendix E, the increase in residue on evaporation shall be a maximum of10mg. 11 Test certificate For each length of hose or hose as
48、sembly the manufacturer shall supply a test certificate giving the results of the tests described in10.2, 10.4 and10.7. 12 Marking Each length of hose and hose assembly shall be durably marked with the following information: a) the manufacturers name or identification; b) the number and date of this
49、 British Standard 2)with the type letter and class number as suffixes; c) the nominal bore; d) the month and year of manufacture; e) the maximum working pressure. NOTEAn example is MN/BS3492:1987B2/51mm/987/7 bar. In addition, class1 hoses shall be marked “suitable for aviation fuels”. 2) Marking BS3492:1987 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the standard. The accuracy of such a claim is therefore solely
