1、April 2010 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、23.040.70!$aX0“1625313www.din.deDDIN EN ISO 1402Rubber and plastics hoses and hose assemblies Hydrostatic testing (ISO 1402:2009)English translation of DIN EN ISO 1402:2010-04Gummi- und Kunststoffschluche und Schlauchleitungen Hydrostatische Prfung (ISO 1402:2009)Englische bersetzung von DIN EN ISO
3、1402:2010-04Tuyaux et flexibles en caoutchouc et en plastique Essais hydrostatiques (ISO 1402:2009)Traduction anglaise de DIN EN ISO 1402:2010-04SupersedesDIN EN ISO 1402:1996-09www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 13 pages04
4、.10 DIN EN ISO 1402:2010-04 2 A comma is used as the decimal marker. National Annex NA (informative) Bibliography DIN EN ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of dimensions of hoses and length of hose assemblies DIN EN ISO 7751, Rubber and plastics hoses and
5、hose assemblies Ratios of proof and burst pressure to design working pressure DIN EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary DIN ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods National foreword This document has be
6、en prepared by Technical Committee ISO/TC 45 “Rubber and rubber products”, (Secretariat: DSM, Malaysia), Subcommittee SC 1 “Hoses” (Secretariat: DSM: Malaysia), and has been adopted as EN ISO 1402:2009 by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” (Secretariat: BS
7、I, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Kautschuktechnik (Rubber Technology Standards Committee), Working Committee NA 045-02-12 AA Schluche. The DIN Standards corresponding to the International Standards referred to in clause 2 of this doc
8、ument are as follows: ISO 4671 DIN EN ISO 4671 ISO 7751 DIN EN ISO 7751 ISO 8330 DIN EN ISO 8330 ISO 23529 DIN ISO 23529 Amendments This standard differs from DIN EN ISO 1402:1996-09 as follows: a) The standard has been brought in line with the current rules of presentation. b) The standard has been
9、 editorially revised. c) Clause 3 “Terms and definitions” has been added. d) Figure 3 has been added. Previous editions DIN EN ISO 1402: 1996-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1402 October 2009 ICS 23.040.70 Supersedes EN ISO 1402:1996English Version Rubber and plastics hos
10、es and hose assemblies - Hydrostatic testing (ISO 1402:2009) Tuyaux et flexibles en caoutchouc et en plastique - Essais hydrostatiques (ISO 1402:2009) Hydrostatische Prfung (ISO 1402:2009) This European Standard was approved by CEN on 26 September 2009. CEN members are bound to comply with the CEN/C
11、ENELEC 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 CEN Management Centre or to
12、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 CEN Management Centre has the same status as the official version
13、s. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spai
14、n, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Me
15、mbers. Ref. No. EN ISO 1402:2009: EGummi- und Kunststoffschluche und Schlauchleitungen -Contents DIN EN ISO 1402:2010-04 EN ISO 1402:2009 (E) 2 Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 General4 5 Apparatus .4 6 Test pieces .5 6.1 Hose assemblies5 6.2 Hoses 5 6.3
16、 Number of test pieces .5 7 Application of hydrostatic pressure 5 7.1 General5 7.2 Procedure .5 8 Hydrostatic pressure tests .6 8.1 Proof pressure hold test .6 8.2 Measurement of deformation under pressure 6 8.3 Burst pressure test8 8.4 Leakage test .9 9 Test report 9 Foreword hose assemblies”, the
17、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 April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. Attention is dra
18、wn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1402:1996. According to the CEN/CENELEC Internal Regulations, the nati
19、onal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
20、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1402:2009 has been approved by CEN as a EN ISO 1402:2009 without any modification. This document (EN ISO 1402:2009) has been prepared by Technical Committee ISO/TC 45
21、“Rubber and rubber products” in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and DIN EN ISO 1402:2010-04 EN ISO 1402:2009 (E) 3 1 Scope This International Standard specifies methods for the hydrostatic testing of rubber and plastics hoses and hose assemblies, includin
22、g methods for the determination of dimensional stability. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (inc
23、luding any amendments) applies. ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 7751, Rubber and plastics hoses and hose assemblies Ratios of proof and burst pressure to design working pressure ISO 8330,
24、 Rubber and plastics hoses and hose assemblies Vocabulary ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 8330 apply. 4 General Unless otherwise
25、 specified, all tests shall be carried out at standard temperature (see ISO 23529). 5 Apparatus 5.1 Pressure source, capable of applying pressure at the rate specified in 7.2.2, up to the required test pressure. 5.2 Calibrated pressure gauge or pressure transducer with digital readout, chosen for ea
26、ch test so that the test pressure is between 15 % and 85 % of the full-scale reading. In the interest of accuracy, calibrated pressure gauges or pressure transducers with digital readouts shall be checked at frequent intervals and the fitting of restrictors is recommended to minimize shock damage. D
27、IN EN ISO 1402:2010-04 EN ISO 1402:2009 (E) 4 5.3 Dimensional equipment, sliding vernier callipers or micrometer, length measuring tape, circumferential measuring tape ( tape). 6 Test pieces 6.1 Hose assemblies When hose assemblies are to be tested, the manufactured assembly length shall be used for
28、 the test. 6.2 Hoses The hydrostatic pressure and burst tests shall be carried out on a hose test piece with a minimum free length, excluding end fittings and end reinforcements, of 600 mm when deformation is to be measured and 300 mm when it is not. When a longer test length is required for a parti
29、cular hose type or size, it must be specified in the individual hose product specification. 6.3 Number of test pieces At least two test pieces shall be tested. 7 Application of hydrostatic pressure 7.1 General Water or another liquid suitable for the hose under test shall be used as the test medium.
30、 WARNING Hoses and hose assemblies pressurized by liquids can fail in a potentially dangerous manner. For this reason, the test shall be performed in a suitable enclosure. Also, the use of air and other gases as test media shall be avoided because of the risk to operators. In special cases, where su
31、ch media are required for the tests, strict safety measures are imperative. Furthermore, it is stressed that, even when a liquid is used as the test medium, it is essential that all air is expelled from the test piece because of the risk of injury to the operator due to the sudden expansion of trapp
32、ed air released when the hose bursts. 7.2 Procedure 7.2.1 Fill the test piece with test liquid, expelling all air, and connect to the test equipment. Close the valve and apply the hydrostatic pressure at a uniform rate of increase. Measure the pressure using a calibrated pressure gauge or pressure t
33、ransducer with digital readout (5.2). IMPORTANT It is important to allow unrestricted movement of the free or plugged end of the test piece during the test. 7.2.2 The rate of pressure increase shall be constant and chosen to reach the final pressure after a period of between 30 s and 60 s for hoses
34、with nominal inside diameters up to 50 mm. For hoses with nominal inside diameters greater than 50 mm and less than or equal to 250 mm, the time needed to reach the final pressure shall be between 60 s and 240 s. For hoses with nominal inside diameters greater than 250 mm, the time needed to reach t
35、he final pressure shall be decided between the manufacturer and the user. DIN EN ISO 1402:2010-04 EN ISO 1402:2009 (E) 5 8 Hydrostatic pressure tests 8.1 Proof pressure hold test When proof pressure tests are used to determine leakage of hoses or hose assemblies, apply the specified proof pressure i
36、n accordance with 7.2.2 and hold it neither for less than 30 s nor for more than 60 s, unless otherwise specified in the product standard, examining the test pieces during this period for evidence of leakage, cracking, abrupt distortions indicating irregularity in material or manufacture, or other s
37、igns of failure. Unless otherwise specified for the hose, the proof pressure shall be related to the maximum working pressure by the ratio given in ISO 7751. NOTE 1 This text uses the term “maximum working pressure” instead of the deprecated term “design working pressure”. NOTE 2 The test is not app
38、licable to curved hose. 8.2 Measurement of deformation under pressure 8.2.1 General procedure 8.2.1.1 Setting up the test piece When tests for determining change in length, change in outside diameter and twisting and/or warping are required, straighten the hose or hose assembly, lay it out horizonta
39、lly for inspection and apply a hydrostatic pressure of 0,7 bar (0,07 MPa). This is necessary to stabilize the hose/hose assembly. Apply this pressure approximately 5 min after completion of the proof pressure test. The supporting surface upon which the hose/hose assembly rests shall be flat and smoo
40、th enough to allow the hose/hose assembly to expand or contract without restriction. Alternatively, the hose/hose assembly may be supported on rollers, or suspended vertically. When a section of hose is used as a test piece, it may also be placed in a test rig in a vertical position. 8.2.1.2 Referen
41、ce marks For long hoses or hose test pieces (see 6.2), while maintaining the pressure, make three reference marks (A, B and C) on the outer surface, the middle mark (B) being made approximately midway along the length of the hose, and the outer marks (A and C) 250 mm (minimum) from B. Each mark shal
42、l consist of an arc on the circumference of the hose through which is drawn a straight line perpendicular to the arc, the three lines being co-linear (see Figure 1). For hose assemblies, measure the distance between the contact faces of the end fittings, or place the reference marks on the hose surf
43、ace near the end of the inserted part of the fitting. 8.2.1.3 Measurement of initial dimensions Maintain the initial pressure of 0,7 bar (0,07 MPa) for approximately 5 min and make the appropriate measurements (see 8.2.2, 8.2.3 and 8.2.4) at the reference marks A and C with an accuracy of 1 mm using
44、 the measuring tape (see 5.3) and record these. Also measure the external diameter or circumference accurately. 8.2.2 Change in length at the specified test pressure NOTE The test pressure will be specified in the appropriate hose product specification and could be the maximum working pressure (see
45、Note 1 to 8.1), the proof pressure or any other pressure below the proof pressure at which the hose deformation characteristics are to be measured. Raise the pressure to the test pressure specified in the hose product standard at the rate specified in 7.2.2 and maintain it for 5 min (or longer when
46、specified in the hose product standard). At the end of this period, DIN EN ISO 1402:2010-04 EN ISO 1402:2009 (E) 6 measure the length between the reference marks A and C or, in the case of hose assemblies, between the contact faces of the end fittings, with an accuracy of 1 mm, using the measuring t
47、ape (see 5.3) and record these values. Calculate the change in length, l, expressed as a percentage of the original length, from the equation )(100100 llll= where l0is the distance between the reference marks A and C or the overall length (hose assemblies) measured at the initial pressure of 0,7 bar
48、 (0,07 MPa), in metres; l1is the distance between reference marks A and C measured at the specified test pressure, in metres. The percentage change in length, l, will be positive (+) in the case of an increase in length and negative () in the case of a decrease in length. For an illustration of the
49、test procedure, see Figure 3. 8.2.3 Change in external diameter at the specified test pressure, measured at the approximate middle of the hose assembly 8.2.3.1 General The external diameter should preferably be determined from measurements of circumference made with an accuracy of 1 mm using the circumferential measuring tape (see ISO 4671). The measurements may, however, be made directly, using sliding vernier callipers having a minimum useful tip width of 5 mm. 8.2.3.2 Determination by measuring the change in external circumference Using t
