1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 4089:1999 ICS 23.040.7
2、0; 75.180.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Metallic hose assemblies for liquid petroleum gases and liquefied natural gasesThis British Standard, having been prepared under the direction of the Engineering Sector Committee, was published unde
3、r the authority of the Standards Committee and comes into effect on 15 December 1999 BSI 12-1999 First published December 1966 Second edition January 1990 Third edition December 1999 The following BSI reference relates to the work on this standard: Committee reference PSE/12 ISBN 0 580 33058 3 BS 40
4、89:1999 Amendments issued since publication Amd. No. Date Comments Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PSE/12, Flexible metallic hose and hose assemblies, upon which the following bodies were represented: B G
5、Technology British Compressed Gases Association British Rubber Manufacturers Association Ltd Energy Industries Council Engineering Equipment and Materials Users Association L P Gas Association Ministry of Defence United Kingdom Petroleum Industry Association LtdBS 4089:1999 BSI 12-1999 i Contents Pa
6、ge Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Information to be supplied by the purchaser 1 5 Requirements 1 5.1 Materials 1 5.2 Hose dimensions 2 5.3 Pressure 2 5.4 Temperature 2 5.5 Flexibility 2 5.6 Construction 2 6 Type te
7、sts 2 7 Production tests 3 8 Test certificate 3 9 Marking 3 10 Cleaning and packaging 3 11 Storage and handling 3 Annex A (informative) Storage, handling and usage of hoses 4 Annex B (normative) Cyclic tests for metallic hoses from DN 100 to DN 200 5 Figure A.1 Guidance on the use of larger hoses 4
8、Figure B.1 Test arrangement 5ii BSI 12-1999 BS 4089:1999 Foreword This revision of BS 4089 has been prepared under the direction of the Engineering Sector Policy and Strategy Committee. It supersedes BS 4089:1989 which is withdrawn. This new edition reflects the publication of BS EN 1762, Rubber hos
9、es and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) Specification, and the requirement to withdraw conflicting National Standards. Product certification. Users of this British Standard are advised to consider the desirability of t
10、hird party certification of product conformity with this British Standard based on testing and continuing product surveillance which may be coupled with assessment of a suppliers quality systems against the appropriate part of BS EN ISO 9000. Enquiries as to the availability of third party certifica
11、tion schemes are forwarded by BSI to the Association of Certification Bodies. If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of Association members. Annex A is informative and annex B is normative. A British Standard
12、does not purport to include all necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an insid
13、e front cover, pages i and ii, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 12-1999 1 BS 4089:1999 1 Scope This British Standard specifies requirements and test methods for metallic hose assemblies used for the lo
14、ading and unloading of liquefied petroleum gases under pressure. The metallic hose assemblies are suitable for use at a pressure of 25 bar and temperatures from22008C to 708C. NOTE These hoses are primarily used for road and rail tankers or for ship to shore duties. 2 Normative references The follow
15、ing normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication ref
16、erred to applies. BS 6501-1:1991, Flexible metallic hose assemblies Part 1: Specification for corrugated hose assemblies. BS EN 10088-1:1995, Stainless steels Part 1: List of stainless steels. BS EN 10088-2:1995, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip for ge
17、neral purposes. ISO 10806:1994, Pipework Non-alloyed and stainless steel fittings for corrugated flexible metallic hoses. 3 Terms and definitions For the purposes of this standard the definitions listed in BS 6501-1:1991 apply. 4 Information to be supplied by the purchaser The purchaser shall state
18、the following in all enquiries and orders: a) intended service, application and environment; b) product to be conveyed; c) nominal size and hose assembly length; d) movement required; e) temperature of the product conveyed; f) maximum ambient temperature; g) type of end fitting required and, where a
19、pplicable, specification of thread; h) product velocity; i) whether mechanical covering is required; j) whether thermal insulation is required; k) any special requirements for hydraulic test fluid; l) any additional requirements for cleaning and post-test treatment; m) requirements for test and mate
20、rial certificates; n) any additional third party certification required; o) if a coloured cover or other identification marking is required; p) any special requirements for packaging. 5 Requirements 5.1 Materials 5.1.1 Hose The hose material shall be either grade 1.4404 or grade 1.4541 in accordance
21、 with BS EN 10088-2. 5.1.2 Braid wire The braid wire shall be soft annealed and shall be grade 1.4301, grade 1.4404 or grade 1.4541 in accordance with BS EN 10088-1.2 BSI 12-1999 BS 4089:1999 5.1.3 End fittings Dependent on the application, end fitting materials shall be one of those given in Table
22、1. Table 1 Types of end fitting Temperature range End fitting 2208Ct o7 08 C Carbon steel 22008Ct o7 08 C 1.4541 22008Ct o7 08 C 1.4404 5.1.4 Protection 5.1.4.1 When a protective coating is used on a stainless steel, it shall not contain zinc, lead or tin. 5.1.4.2 If the material of a synthetic cove
23、r contains sulfur or chlorine care shall be taken to ensure that chlorine or sulfur is not released during the manufacturing process or in the conditions of service. 5.2 Hose dimensions 5.2.1 Bore The nominal sizes, in mm, of the metallic hose assemblies shall conform to BS 6501-1:1991, with a maxim
24、um of 200 and the following preferred sizes: 40, 50, 80, 100, 150, and 200. 5.2.2 Length The length of a metallic hose assembly shall be the overall length including end connections, and shall be manufactured to a tolerance of %. 21 +3 5.3 Pressure 5.3.1 The maximum design pressure shall be 25 bar.
25、5.3.2 Metallic hose assemblies shall have a minimum burst pressure of 100 bar. 5.4 Temperature Depending on the end fittings, metallic hose assemblies shall be suitable for use over two temperature ranges:2208C to +708C and22008C to +708C. 5.5 Flexibility For nominal sizes up to DN 100, metallic hos
26、e assemblies shall comply with the requirements for flexibility type B in accordance with BS 6501-1:1991. For nominal sizes from DN 100 to DN 200, metallic hose assemblies shall comply with the requirements of annex B. 5.6 Construction All hose assemblies shall consist of, as a minimum, a hose, brai
27、d and fittings. All joining methods employed in the manufacture of hose and hose assemblies shall be by welding in accordance with qualified procedures. The assembly procedure shall conform to the requirements for welded end fittings given in BS 6501-1: 1991, and joints shall be free from globular d
28、eposits, discontinuities, porosity and undercutting, and shall have a regular surface. 5.6.1 Hose Metallic hoses shall be manufactured from seamless or longitudinally butt-welded tube, with annular corrugations, in accordance with BS 6501-1, and of the material specified in 5.1. After forming the co
29、rrugated hose, the surface shall be finished smoothly and shall be free from any defects which might cause failure of the hose in service. 5.6.2 Wire braid Metallic hoses shall be close covered by wire braid (see 5.1.2), which is welded securely to the end fittings. The manufacturer shall ensure tha
30、t the wire braid is designed to fit the selected hose outside diameter. 5.6.3 End fittings Fittings shall conform to ISO 10806:1994 unless otherwise agreed between the manufacturer and purchaser. 5.6.4 Hose coverings Where used, covers shall be self extinguishing or not support combustion. NOTE Cove
31、rs are used for mechanical protection, thermal insulation and coding, see BS 6501-1. 5.6.5 Clean conditions Before, during and subsequent to manufacture, components and hose assemblies shall be kept free from any foreign bodies or deleterious substances. 6 Type tests Type approval tests shall be car
32、ried out, in accordance with the requirements of BS 6501-1, by the manufacturer on each new or modified type of metallic hose assembly. When tested in accordance with BS 6501-1:1991, 14.5 the burst pressure of metallic hose assemblies shall be not less than 100 bar. Where a manufacturer uses tube jo
33、ints all type approval tests shall incorporate such a joint. BSI 12-1999 3 BS 4089:1999 7 Production tests 7.1 General After manufacture, each flexible metallic hose assembly shall be subjected to the following tests, in the order stated, (for safety reasons) during which there shall be no signs of
34、leakage or other failure. After testing, the hydrostatic test medium shall be completely removed from each flexible metallic hose assembly and blank ends fitted. 7.2 Hydrostatic test Gradually apply an internal hydrostatic pressure of 37.5 bar and maintain for a period of 5 minutes, then gradually r
35、elease the pressure. When under pressure, the increase in length of the assembly shall be not more than 3 %. Measurements shall be carried out over the full length of the hose assembly or on a gauge length of not less than 8 m. 7.3 Leak test Apply a pneumatic pressure of 3.5 bar with the hose assemb
36、ly submerged in water and, following the removal of any air trapped in the braiding, maintain it for a period of 5 minutes; then gradually release the pressure. When tested the hose assembly shall show no signs of visible leakage. NOTE Pneumatic testing is potentially a much more dangerous operation
37、 than hydraulic testing in that, irrespective of size, any failure during test is likely to be of a highly explosive nature. Attention is drawn to the Health and Safety Notice GS4, “Safety in Pressure Testing”. 8 Test certificate The manufacturer shall provide the purchaser with an individual test c
38、ertificate for each metallic hose assembly incorporating the marking details specified in clause 9 in addition to the test results. 9 Marking Each flexible metallic hose assembly shall be marked on one end fitting with the following information: a) the number and date of this British Standard, i.e.
39、BS 4089:1999; b) the manufacturers name or trade mark; c) the hose assembly serial number; d) the month and year of manufacture, e.g. 6/1989 representing June 1989; e) for hose assemblies above 80 mm nominal size, the design pressure and the operating temperature range. 10 Cleaning and packaging Cle
40、aning and packaging shall be in accordance with BS 6501-1:1991, clause 17. 11 Storage and handling Guidance on storage and handling is given in annex A.BS 4089:1999 4 BSI 12-1999 ALWAYS Support hose at appropriate points with the slings provided Support hose near manifold connections Protect hose ag
41、ainst sharp edges such as jetty edges and a ships guard rail Store hose in a straight line raised off the ground, preferably in a cool, dark area NEVER Use hose unsupported Support hose with a single rope Allow hose to droop between ship and jetty Overbend hose Figure A.1 Guidance on the use of larg
42、er hoses Annex A (informative) Storage, handling and usage of hoses A.1 Storage The following recommendations should be adopted for flexible metallic hose assemblies that are not immediately placed in service. a) Whenever possible assemblies should be stored straight. When requirements dictate that
43、hoses are coiled, they should be stored in a horizontal plane. The diameters of the coils should be sufficient to prevent any kinking or distortion of the hoses. b) Hose assemblies should be stored in such a way that they are not distorted by the weight of overlying objects. c) Means shall be provid
44、ed to prevent the ingress of foreign matter. A.2 Handling and usage In addition to the installation requirements in BS 6501-1:1991 further guidance on the use of larger hoses is given in Figure A.1. BSI 12-1999 5 BS 4089:1999 Figure B.1 Test arrangement Annex B (normative) Cyclic tests for metallic
45、hoses from DN 100 to DN 200 B.1 Hose assemblies shall have an average life of 5 000 cycles but not less than 4 000 cycles when tested in accordance with B.6 and Table B.1. B.2 Prior to testing a hose assembly shall be degreased and dipped in a 20 % oil-water emulsion (ISO 6743-7 Family M oil). The h
46、ose assembly shall not be lubricated during the test. B.3 Six hose assemblies per DN size, shall be subjected to the tests specified in B.6. If a DN size fails the test requirement (see B.1), five further samples of the same DN size shall be tested without failure (see B.6). B.4 The test shall be co
47、nducted with the hose at a pressure of 25 bar. B.5 Failure is defined as leakage of the hose or a permanent change in shape greater than 20 % of the nominal bend radius. B.6 Cantilever bend test The hose assembly shall be rigidly fixed at point A (see Figure B.1), the other end shall be moved by mea
48、ns of a lateral force applied at point P , located at the end of the flexible length, so that a stroke as given in Table B.1 will be achieved. The flexible length “l” shall be six times the nominal size. The hose shall be subjected to repeated flexing at a sinusoidal rate of from 3 cycles/min to 15
49、cycles/min in a lateral direction to the axis of the hose. Table B.1 Cantilever bend test Nominal size DN 100 150 200 Stroke (mm) 50 55 80BS 4089:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Standar
