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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 13090:2000 The Euro
2、pean Standard EN 13090:2000 has the status of a British Standard ICS 23.040.80; 91.140.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Means for resealing threaded joints of gas pipework in buildings Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00
3、2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 December 2000 BSI 12-2000 ISBN 0 580 36751 7 BS EN 13090:2000 Amendments issu
4、ed since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN 13090:2000. The UK participation in its preparation was entrusted to Technical Committee PSE/2, Gaskets, which has the responsibility to: aid enquirers to understand the t
5、ext; 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 this committee can be obt
6、ained 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, or by using the Find faci
7、lity 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 confer immunity from legal obliga
8、tions. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GM
9、T+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13090 October 2000 ICS 23.040.80 English version Means for resealing threaded joints of gas pipework in buildings Matriaux pour la rtanchit des raccords filets des tuyauteries de gaz dans les btiments Mitte
10、l zum nachtrglichen Abdichten von Gewindeverbindungen in Gas-Leitungsinstallationen in Gebuden This European Standard was approved by CEN on 25 September 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard t
11、he 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, Germa
12、n). 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, Czech Republic, Denmark, Fin
13、land, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Bruss
14、els 2000 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13090:2000 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 13090:2000 Contents Page Contents 2 Foreword3
15、 Introduction.3 1 Scope 4 2 Normative References.4 3 Terms and definitions .4 4 Requirements.5 4.1 Requirements to be met by the sealant as received.5 4.1.1 Effect on metals.5 4.1.2 Effect on seals .5 4.1.3 Effect on combustion behaviour of fuel gases.5 4.2 Requirements to be met by the sealant afte
16、r assembly5 4.2.1 Sealing properties5 4.2.1.1 Effect of gas condensate on sealants.5 4.2.1.2 Effect of vibration5 4.2.2 Disassembly of joints.5 5 Test material and documentation 5 5.1 Test material.5 5.2 Documentation5 6 Test methods6 6.1 Test of sealants as received.6 6.1.1 Test of corrosiveness.6
17、6.1.2 Test of effect on seals6 6.1.3 Test of effect on the combustion behaviour of fuel gases.6 6.2 Test of sealants in test assemblies.7 6.2.1 Test of sealing properties.7 6.2.1.1 Preparation of test assemblies .7 6.2.1.2 Sealing8 6.2.1.3 Soundness test.9 6.2.1.4 Aging test10 6.2.1.5 Test of resist
18、ance against gas condensate 10 6.2.1.6 Test of vibration resistance.10 6.2.2 Dismantling10 7 Marking.10 Annex A (informative) A-deviations13 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 13090:2000 Foreword This European Standard
19、 has been prepared by Technical Committee CEN/TC 108 “ Sealing materials and lubricants for gas appliances and gas equipment“, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsemen
20、t, at the latest by April 2001, and conflicting national standards shall be withdrawn at the latest by April 2001. Annex A is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
21、 Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Introduction Threaded joints of old interior gas piping systems may become unsound, because, for exampl
22、e, in former times parallel/parallel threaded joints were sealed by the application of natural fibers (e.g. hemp, flax) in combination with unsuitable sealing materials. These joints were sound as long as the distributed gas was wet and thus kept the natural fibers in a swollen condition. However, t
23、he joints began to leak when subsequently dry gas was introduced and the fibres consequently shrank. Sealants specified in this European Standard are suitable for sealing leaky threaded joints, but not corroded or broken pipes. It is therefore recommended that the leakage rate of the gas installatio
24、n, under distribution pressure, is determined prior to resealing. If the leakage rate is greater than e.g. 5 l/h then this is normally an indication of corrosion or other severe pipe damage. This should be repaired before the installation is treated with the sealant. General recommendations for the
25、design, construction, testing, operation, and maintenance of gas pipework in buildings are specified in EN 1775. All pressures referred to in this Standard are gauge pressures. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 13090:
26、2000 1 Scope This European Standard specifies the properties and the test methods of sealants used to reseal threaded joints of metallic gas pipework in buildings operated at a maximum allowed operating pressure of 100 mbar (such sealants hereafter are referred to as “sealants“). Note Gas pipework i
27、n buildings is in accordance with EN 1775 the pipework between the point of delivery and the inlet connection to the gas appliance. This Standard is applicable to sealants for threaded joints of metallic gas pipework, in buildings, carrying fuel gases of the 1st family (town gas), 2nd family (natura
28、l gas), and 3rd family (liquefied petroleum gases (LPG) (see EN 437) but not including liquefied petroleum gases in the liquid state. Sealing materials for the installation of metallic threaded joints are specified in EN 751. 2 Normative References This European Standard incorporates by dated or und
29、ated reference, provisions from other publications. These normative references are cited at the 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
30、 incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 437Test gases - Test pressures - Appliance categories EN 549:1994Rubber materials for seals and diaphragms for gas appliances and gas equipment EN
31、 751-1Sealing materials for metallic threaded joints in contact with 1st, 2nd, and 3rd family gases, and hot water - Part 1: Anaerobic jointing compounds EN 751-2Sealing materials for metallic threaded joints in contact with 1st, 2nd, and 3rd family gases, and hot water - Part 2: Non-hardening joint
32、ing compounds EN 751-3Sealing materials for metallic threaded joints in contact with 1st, 2nd, and 3rd family gases, and hot water - Part 3: Unsintered PTFE tapes EN 1775Gas suply - Gas pipework for buildings - Maximum operation pressure ? 5 bar - Functional recommendations EN 10242Threaded pipe fit
33、ting in malleable cast iron prEN 10255:1996Non-alloy steel tubes suitable for welding or threading ISO 7-1Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designation 3 Terms and definitions For definitions concerning gas pipework in buildings ref
34、erence is made to EN 1775. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 13090:2000 4 Requirements 4.1 Requirements to be met by the sealant as received 4.1.1 Effect on metals Sealants shall not cause any corrosion of any metal p
35、ipe material. 4.1.2 Effect on seals Sealants shall not impair elastomer seals according to EN 549:1994. This requirement is not relevant for anaerobic sealants. 4.1.3 Effect on combustion behaviour of fuel gases Sealants shall not impair the combustion of fuel gases in gas appliances or the operatio
36、n of safety, control or metering equipment. 4.2 Requirements to be met by the sealant after assembly 4.2.1 Sealing properties Gas piping systems sealed by sealants shall be sound under the conditions laid down in 6.2.1. 4.2.1.1 Effect of gas condensate on sealants The sealing properties of sealants
37、shall not be impaired by gas condensates. 4.2.1.2 Effect of vibration The sealing properties of sealants shall not be impaired by the effect of vibrations. 4.2.2 Disassembly of joints It shall be possible to disassemble resealed joints, using commercial tools, without damaging any of the threads. 5
38、Test material and documentation 5.1 Test material The manufacturer or supplier shall submit sufficient quantities (about 10 l) of the sealant to the test laboratory. 5.2 Documentation The following documents shall be submitted to the test laboratory: a) Description of the sealant. b) Application and
39、 handling instructions including preparatory procedures such as soundness test, disconnection of gasmeters and appliances, cleaning of the pipework; application of the sealant by e.g. the filling, spraying or wicking method, removal of surplus sealant; final soundness test and re- establishment of t
40、he gas supply. c) Appropriate health and safety data sheets conforming to the requirements of the country of use. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 13090:2000 6 Test methods 6.1 Test of sealants as received 6.1.1 Test
41、 of corrosiveness The corrosiveness of the sealant shall be tested using copper, copper-zinc alloy, zinc and low carbon steel strips each 75 mm long, 13 mm wide and not less than 0,5 mm thick. Mechanically abrade both faces and the edges of each strip to obtain a uniform finish free from defects. Po
42、lish each strip with emery paper (grade No. 400) and then clean with successive pads of cotton wool until a fresh pad remains unsoiled after use. Wash each strip with acetone and allow it to dry. Use clean forceps for all further handling of the strips. Coat 50 mm of one side of each of two test str
43、ips of the same metal with sealant. Lay one strip, treated side up, on a horizontal surface and place the other with an overlapping of the coated 50 mm directly on top, treated side down. Hold in position with a (200 10) g weight. Store the test strips for (336 ? 2)h at (20 ? 5) C and then separate
44、them - if necessary after warming up. The cleaned surfaces of the test strips shall show no pitting due to the effect of the sealant, but changes in the color and clouding of the polished surfaces shall be acceptable. 6.1.2 Test of effect on seals The effect of the sealant on seals used for interior
45、 gas pipework shall be tested in accordance with 7.6 of EN 549:1994 by assessing the swelling caused by the sealant (instead of pentane) and the behaviour at subsequent drying of specimens made from nitrile butadiene rubber (NBR) with an IRHD hardness of 75 5 which satisfy the requirements laid down
46、 in EN 549:1994. The increase in mass due to swelling shall not exceed 10 % and the change in hardness shall not exceed 10 IRHD. The decrease in mass after drying shall not be in excess of 5 % and the change in hardness shall not be in excess of 10 IRHD. This test is not relevant for anaerobic seala
47、nts. 6.1.3 Test of effect on the combustion behaviour of fuel gases To test the effect of the sealant on the combustion behaviour of fuel gases, 100 ml of sealant shall be filled into a Woulf bottle with a capacity of approx. 500 ml. The gas inlet pipe shall run through the central bottle tube and s
48、hall end (5 1) mm above the liquid level. The gas outlet pipe shall end at least 50 mm above the liquid level. Air shall be removed from the bottle by purging the bottle with natural gas. Following purging, the pilot of a conventional instantaneous water heater and a thermo- electric flame supervisi
49、on device shall be connected to the outlet using a short glass, metal or PTFE tubing and shall be adjusted properly. The length of the pilot flame shall then be measured at a given pressure. Following 72 h of continuous operation at (20 ? 5) C, the function of the pilot and the thermo-electric flame supervision device shall be tested and the length of the pilot flame shall be measured. Further the nozzle, the burner, the temperature sensor and the thermo-electric flame supervision device shall be examin