1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Glass in building - Insulating glass unitsPart 3: Long term test method and requirements for gas leakage rate and for gas concentration tolerancesBS EN 1279-3:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 127
2、9-3 July 2018 ICS 81.040.20 Supersedes EN 1279-3:2002English Version Glass in building - Insulating glass units - Part 3: Long term test method and requirements for gas leakage rate and for gas concentration tolerances Verre dans la construction - Vitrage isolant - Partie 3 : Mthode dessai long term
3、e pour le dbit de fuite et prescriptions pour les tolrances de concentration en gaz Glas im Bauwesen - Mehrscheiben-Isolierglas - Teil 3: Langzeitprfverfahren und Anforderungen bezglich Gasverlustrate und Grenzabweichungen fr die Gaskonzentration This European Standard was approved by CEN on 2 March
4、 2018. 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 obtain
5、ed on application to the CEN-CENELEC Management Centre 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 CEN-
6、CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,
7、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management
8、Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1279-3:2018 ENational forewordThis British Standard is the UK implementation of EN 1279-3:2018. It supersedes BS EN 1279-3:2002, whi
9、ch is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/520, Glass and glazing in building.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provision
10、s of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 89453 4ICS 81.040.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published un
11、der the authority of the Standards Policy and Strategy Committee on 31 August 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 1279-3:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1279-3 July 2018 ICS 81.040.20 Supersedes EN 1279-3:2002English Ver
12、sion Glass in building - Insulating glass units - Part 3: Long term test method and requirements for gas leakage rate and for gas concentration tolerances Verre dans la construction - Vitrage isolant - Partie 3 : Mthode dessai long terme pour le dbit de fuite et prescriptions pour les tolrances de c
13、oncentration en gaz Glas im Bauwesen - Mehrscheiben-Isolierglas - Teil 3: Langzeitprfverfahren und Anforderungen bezglich Gasverlustrate und Grenzabweichungen fr die Gaskonzentration This European Standard was approved by CEN on 2 March 2018. CEN members are bound to comply with the CEN/CENELEC Inte
14、rnal 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-CENELEC Management Centre or to any
15、 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-CENELEC Management Centre has the same status as the official ve
16、rsions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway
17、, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All right
18、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1279-3:2018 EBS EN 1279-3:2018EN 1279-3:2018 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Symbols and abbreviations . 5 5 Requirements
19、 . 6 5.1 Gas leakage rate . 6 5.2 Tolerances on gas concentration. 7 5.3 Durability of the gas and interaction with IGU components . 7 6 Test method 7 6.1 Principle of testing 7 6.2 Apparatus . 7 6.2.1 Climate exposure equipment 7 6.2.2 Container for gas leakage rate measurement . 7 6.2.3 Gas analys
20、is equipment 7 6.2.4 Gas sampling device . 8 6.2.5 Preparation of test specimens 8 6.2.6 Number of test specimens 8 6.3 Procedure. 8 6.3.1 Determination of internal volume Vintof a test specimen 8 6.3.2 Climate exposure . 8 6.3.3 Measuring the gas leakage . 9 6.3.4 Analysis of gas 9 6.4 Evaluation 9
21、 7 Test report 10 Annex A (normative) Reference method for the determination of the gas leakage rate by gas chromatography . 12 A.1 Principle of method . 12 A.2 Equipment 12 A.3 Preparation of test specimens . 16 A.4 Procedure 17 Annex B (informative) Relationship between artificial and natural agei
22、ng with regard to thermal and sound insulation . 23 BS EN 1279-3:2018EN 1279-3:2018 (E) 3 European foreword This document (EN 1279-3:2018) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by NBN. This European Standard shall be given the statu
23、s of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2019 and conflicting national standards shall be withdrawn at the latest by January 2019. Attention is drawn to the possibility that some of the elements of this document may be the subje
24、ct of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1279-3:2002. The main changes compared to the previous edition EN 1279-3:2002 are: a) the standard has been fully technically and editorially revised; b) the scope has be
25、en changed; c) Terms and definitions and symbols have been split into two clauses; d) requirement for gas leakage rate has been significantly changed; e) the test method of this standard is also applicable to triple glazing units; f) gas leakage rate can be determined after ageing a minimum two and
26、a maximum four test specimens. Durability of gas and interaction with IGU components has been added to requirements; g) precision of the test method has been moved to A.4.8 and updated following a new inter-laboratory test performed in 2009; h) “Test report“ has been revised adding a full descriptio
27、n of the test specimen; i) “Requirements for other gases” has been changed and moved to EN 1279-5:2018, Annex B: “Effect of gas filling on U and Rw”. j) “Gas leakage rate by gas chromatography” is now Annex A; k) exchange criteria for gases are given in EN 1279-1:2018, Annex D. This document has bee
28、n prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document is part of the series EN 1279 “Glass in building - Insulating glass units” which consists of the following parts: Part 1: Generalities, system description, rules for substitution
29、, tolerances and visual quality; Part 2: Long term test method and requirements for moisture penetration; Part 3: Long term test method and requirements for gas leakage rate and for gas concentration tolerances; Part 4: Methods of test for the physical attributes of edge seal components and inserts;
30、 BS EN 1279-3:2018EN 1279-3:2018 (E) 4 Part 5: Product standard; Part 6: Factory production control and periodic tests. These parts are inextricably bound up with each other. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound
31、to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
32、Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1279-3:2018EN 1279-3:2018 (E) 5 1 Scope This European Standard describes the test method for the determination of gas leakage rate and specifies the requirements for limit values for gas leakage rat
33、e and gas concentration for gas filled insulating glass units made a) in accordance with EN 1279-1:2018 and manufactured to EN 1279-6:2018, or b) for the purpose to demonstrate that components (e.g. edge seals or spacers) will allow the insulating glass unit to conform to the requirements given in E
34、N 1279-1:2018, Clause 6. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the refer
35、enced document (including any amendments) applies. EN 673, Glass in building - Determination of thermal transmittance (U value) - Calculation method EN 1279-1:2018, Glass in building - Insulating glass units - Part 1: Generalities, system description, rules for substitution, tolerances and visual qu
36、ality EN 1279-2:2018, Glass in building - Insulating glass units - Part 2: Long term test method and requirements for moisture penetration EN 1279-6:2018, Glass in building - Insulating glass units - Part 6: Factory production control and periodic tests 3 Terms and definitions For the purposes of th
37、is document, the terms and definitions given in EN 1279-1:2018 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 4 Sym
38、bols and abbreviations Symbol Characteristic Unit ciconcentration of gas i determined in accordance with 6.3.4 % ci,onominal value for a system of insulating glass and gas i which is the basis for testing sound insulation and/or calculating or testing thermal insulation to fix the respective Rwand U
39、-value % mimass of gas that has leaked from a gas-filled unit in a given time g/h Ligas leakage rate %a1Li,maxmaximum gas leakage rate from all tested specimens %a1Li,avaverage gas leakage rate for all tested specimens %a1P absolute atmospheric pressure at which the unit was sealed hPa BS EN 1279-3:
40、2018EN 1279-3:2018 (E) 6 Symbol Characteristic Unit P0atmospheric pressure at which 0was determined hPa T temperature at which unit was sealed K T0temperature at which 0was determined K Vintinternal volume of the test specimen according to 6.3.1 in mm30,idensity of gas i at temperature T0and pressur
41、e P0in g/mm35 Requirements 5.1 Gas leakage rate The gas leakage rate Li for IGU containing gas(es) in concentrations higher than 15 % by volume per gas are measured as described in Clause 6 and shall be determined on an average of at least two specimens and maximum 4 specimens. NOTE The number of sp
42、ecimens to be tested is decided by the manufacturer. Li,av 1,0 in % a-1With an absolute limit of all individual Li,max 1,20 in % a-1Individual values shall be rounded to the second decimal place. Average value shall be rounded to one decimal place. EXAMPLE 1 Measurements of only two specimens: a) 0,
43、89 and 0,91 = average 0,9, passed; no further measurement b) 0,91 and 1,09 = average 1,0, passed; no further measurement c) 0,82 and 1,22 = average 1,0, failed (1,22) ; no further measurement d) 1,10 and 1,08 = average 1,1 failed; further measurements optional: see option A or B e) 0,98 and 1,15 = a
44、verage 1,1 failed; further measurements optional: see option A or B Optional further measurements: Option A: If with the 3rd specimen the mean value is 1,0: passed If with the 3rd specimen the mean value stays 1,0 but the value of the 3rd specimen is 1,20, test the 4th specimen and if with the 4th s
45、pecimen the mean value is 1,0: passed. If the mean value of 4 specimens remain 1,0: failed Option B: Measure Li of further 2 specimens and if average value of the 4 tested specimens is less than 1,0 and no individual value 1,20: passed EXAMPLE 2 Measurements of 4 specimens Measure directly 4 specime
46、ns and determine Li,av and Li,max and compare with requirements given. BS EN 1279-3:2018EN 1279-3:2018 (E) 7 For most insulating glass units, measured Li values are much higher than actual gas leakage values after 10 years of natural ageing. Therefore, the limiting value shall not be used for calcul
47、ating the gas concentration during the lifetime of the IGU. See also Annex B. 5.2 Tolerances on gas concentration Gas concentration before and after the test procedure given in 6.3, shall not be lower than 5 % absolute below the nominal value used to calculate the U-value declared by the IGU manufac
48、turer. 5.3 Durability of the gas and interaction with IGU components For the purposes of gas filling, only inert gases should be used like Ar, Kr, Xe. The use of any other gas will require chemical compatibility tests to be carried out. 6 Test method 6.1 Principle of testing The gas leakage rate at
49、20 C is measured after subjecting the test specimens to a climate exposure as specified in EN 1279-2:2018 with the following modifications: in step 1 the number of cycles is 28; and in step 2 the time at a constant temperature of 58 C is 4 weeks. For the measurement of the gas leakage rate, the specimen is placed in a gastight container and, after a given time, the amount of gas which has leaked from the specimen is measured. After this measurement, the gas concentration in the specimen is analys
