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1、BRITISH STANDARD BS EN 15159-2:2006 Vitreous and porcelain enamels Glass-lined apparatus for process plants Part 2: Designation and specification of resistance to chemical attack and thermal shock The European Standard EN 15159-2:2006 has the status of a British Standard ICS 71.120.10; 25.220.50 ? L
2、icensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN15159-2:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006 ISBN 0 580 48657 5 National foreword This Britis
3、h Standard is the official English language version of EN 15159-2:2006. The UK participation in its preparation was entrusted to Technical Committee STI/36, Vitreous enamel coatings, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to
4、its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electron
5、ic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to unde
6、rstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a
7、 front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:
8、18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15159-2 July 2006 ICS 71.120.10; 25.220.50 English Version Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 2: Designation and specification of resistance to chemical
9、 attack and thermal shock Emaux vitrifis - Appareils maills pour les installations industrielles - Partie 2: Exigences de qualit Emails und Emaillierungen - Emaillierte Apparate fr verfahrenstechnische Anlagen - Teil 2: Bezeichnung und Festlegung der chemischen und Temperaturschockbestndigkeit This
10、European Standard was approved by CEN on 12 June 2006. 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
11、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, German). A version in any other language made by translation under the responsibility of a CEN member into its
12、 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe
13、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll ri
14、ghts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15159-2:2006: E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 15159-2:2006 (E) 2 Contents Page Foreword3 1 Scope5 2 Normative ref
15、erences5 3 Designation 5 4 Quality requirements.5 Bibliography7 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 15159-2:2006 (E) 3 Foreword This document (EN 15159-2:2006) has been prepared by Technical Committee CEN/TC 262 “Metallic and
16、other inorganic coatings”, the 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 January 2007, and conflicting national standards shall be withdrawn at the lates
17、t by January 2007. EN 15159 is comprised of the following parts under the general heading Vitreous and porcelain enamels Glass-lined apparatus for process plants Part 1: Quality requirements for apparatus, components, appliances and accessories Part 2: Designation and specification of resistance to
18、chemical attack and thermal shock Part 3: Thermal shock resistance According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fr
19、ance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27 GMT+00:00 2006, Uncontroll
20、ed Copy, (c) BSI EN 15159-2:2006 (E) 4 Introduction For many materials, the chemical composition can serve as a basis for a specification. This is not possible for chemical enamels because the composition is tied very closely to the specific enamelling technique and is therefore not disclosed by the
21、 manufacturer for competitive reasons. In order to ascribe measurable attributes to an enamel besides its general designation, the manufacturer conducts standardized tests and specifies its enamel in terms of the resulting resistance to corrosion and thermal shock, together with a declaration of the
22、 structure of the cover coat enamel and the colour of the enamel. The quality requirements stated in this European Standard represent the minimum requirements a chemical enamel is expected to meet based on the current state of the art. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27
23、GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 15159-2:2006 (E) 5 1 Scope This European Standard specifies requirements for the resistance to chemical attack and thermal shock of chemical enamels and their designation for ordering purposes. It is applicable to enamelled apparatus, components and pipi
24、ng components primarily used for process equipment in chemical plants. This European Standard only applies to unalloyed and low-alloy carbon steels suitable for enamelling. NOTE The main criteria for assessing enamel quality are the resistance to chemical attack and thermal shock and the structure o
25、f the cover coat enamel. 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 (including any amendments) applies. E
26、N 14483-2, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Part 2: Determination of resistance to chemical corrosion by boiling acids, neutral liquids and/or their vapours EN 14483-4, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Pa
27、rt 4: Determination of resistance to chemical corrosion by alkaline liquids using a cylindrical vessel ISO 13807, Vitreous and porcelain enamels Determination of crack formation temperature in the thermal shock testing of enamels for the chemical industry 3 Designation The enamel quality shall be de
28、signated by stating the following information: corrosion rate in hydrochloric acid determined in accordance with EN 14483-2; corrosion rate in sodium hydroxide solution determined in accordance with EN 14483-4; crack formation temperature determined in accordance with ISO 13807; structure of the cov
29、er coat enamel, e.g. all vitreous, all semi-crystalline, vitreous on a semi-crystalline intermediate layer and semi-crystalline on a vitreous intermediate layer; colour of the enamel. The designation of data on quality requirements according to this European Standard shall be as follows: Enamel qual
30、ity requirements in accordance with EN 15159-2. 4 Quality requirements 4.1 Corrosion rate in hydrochloric acid When tested in accordance with EN 14483-2 the resistance to condensing hydrochloric acid vapour shall be less than or equal to 0,08 mm/a. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov
31、 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 15159-2:2006 (E) 6 4.2 Corrosion rate in sodium hydroxide solution When tested in accordance with EN 14483-4 the corrosion rate in a sodium hydroxide solution shall be less than or equal to 0,40 mm/a. The ratio of the volume of an attacking
32、sodium hydroxide solution in cubic centimetres to the exposed enamel surface in square centimetre shall be 3,5:1. 4.3 Crack formation temperature When tested in accordance with ISO 13807 the crack formation temperature shall be greater than or equal to 190 C. For enamels used on accessories such as
33、agitators, baffles, thermometer wells, immersion tubes, intermediate rings, sensors and perforated plates, and also for piping accessories and pumps, a crack formation temperature of at least 170 C may be permissible. The crack formation temperature determined in accordance with ISO 13807 represents
34、 a character of the specimens. This test result shall not be applied directly to an apparatus or accessories. Temperature limits for thermal shock and for heating and cooling of an apparatus are given in the thermal shock diagram and the diagram for heating and cooling given in EN 15159-3. Licensed
35、Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 15159-2:2006 (E) 7 Bibliography 1 EN 15159-3, Vitreous and porcelain enamels Glass-lined apparatus for process plants Part 3: Thermal shock resistance Licensed Copy: sheffieldun sheffieldun, na, Fri
36、Nov 17 08:18:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 15159-2:2006 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the interna
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