EN ISO 28721-3:2011

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3: Thermal shock resistance (ISO 28721-3:2008)

ISO 28721-3:2008 specifies requirements for the thermal shock resistance of, and heating and cooling procedures for, glass-lined apparatus, components, accessories and pipes primarily used for process equipment in chemical plants.
It specifies the limits of thermal shock resistance using diagrams. For glass-lined steel, a distinction is made between a thermal shock on the glass-lined side (produced by charging an apparatus) and a thermal shock on the steel side (produced by heating or cooling an apparatus).
This part of ISO 28721 applies to operating temperatures from - 25 °C to + 230 °C.
It is only applicable to enamelled unalloyed and low-alloy carbon steels.

Emails und Emaillierungen - Emaillierte Apparate für verfahrenstechnische Anlagen - Teil 3: Temperaturschockbeständigkeit (ISO 28721-3:2008)

Dieser Teil von ISO 28721 legt Anforderungen an die Temperaturschockbeständigkeit von emaillierten
Apparaten, Apparateteilen, Einbauteilen und Rohrleitungen, die vorwiegend für verfahrenstechnische Zwecke
in Chemie-Anlagen eingesetzt werden, sowie dafür geeignete Heiz- und Kühlverfahren fest.
Er legt die Grenzwerte der Temperaturschockbeständigkeit mithilfe von Diagrammen (siehe Bild 1 und Bild 2)
fest. Für emaillierten Stahl wird zwischen dem emailseitigen Temperaturschock (zu dem es beim Befüllen
eines Apparates kommt) und dem stahlseitigen Temperaturschock (zu dem es beim Heizen oder Kühlen
eines Apparates kommt) unterschieden.
Dieser Teil von ISO 28721 gilt für einen Betriebstemperatur-Bereich von −25 °C bis +230 °C.
Er gilt nur für unlegierte und niedriglegierte emaillierbare Kohlenstoffstähle.

Émaux vitrifiés - Appareils émaillés pour les installations industrielles - Partie 3: Résistance au choc thermique (ISO 28721-3:2008)

L'ISO 28721-3:2008 spécifie les exigences de résistance au choc thermique ainsi que les modes opératoires de chauffe et de refroidissement d'appareils, de composants, d'accessoires et des éléments de tuyauterie émaillés, utilisés principalement dans les installations industrielles des usines chimiques.
Elle spécifie les limites thermiques admissibles à l'aide de diagrammes (voir Figures 1 et 2). Pour l'acier émaillé, une distinction est faite entre les chocs thermiques qui se produisent sur la face émaillée (lors du chargement d'un appareil) et ceux qui se produisent sur la face en acier (lors de la chauffe ou du refroidissement d'un appareil).
L'ISO 28721-3:2008 s'applique à des températures de fonctionnement allant de -25 °C à +230 °C.
Elle ne s'applique qu'aux aciers au carbone émaillés non alliés et faiblement alliés.

Steklasti in keramični emajli - Emajlirane naprave za procesno opremo - 3. del: Odpornost proti toplotnemu udaru (ISO 28721-3:2008)

ISO 28721-3:2008 določa zahteve za odpornost proti toplotnemu udaru in grelne in hladilne postopke za emajlirane naprave, sestavne dele, dodatke in cevovode, ki se uporabljajo predvsem za procesno opremo v kemičnih tovarnah.
Meje odpornosti proti toplotnemu udaru določa z diagrami. Pri emajliranem jeklu ločujemo toplotni udar na emajlirani strani (ki nastane pri polnjenju naprave) in toplotni udar na jekleni strani (ki nastane pri segrevanju ali hlajenju naprave).
Ta del ISO 28721 velja za delovne temperature med -25 °C in +230 °C.
Velja samo za emajlirana nelegirana in malo legirana ogljikova jekla.

General Information

• Status: Published
• Publication Date: 12-Apr-2011
• Withdrawal Date: 30-Oct-2011
• ICS: 25.220.50 - Enamels
• Technical Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Drafting Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 13-Apr-2011
• Due Date: 27-Sep-2011
• Completion Date: 13-Apr-2011
• Ref Project: SIST EN ISO 28721-3:2011 - Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3: Thermal shock resistance (ISO 28721-3:2008)

Relations

• Replaces: EN 15159-3:2006 - Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3: Thermal shock resistance
• Effective Date: 17-Oct-2009

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2011
1DGRPHãþD
SIST EN 15159-3:2006
6WHNODVWLLQNHUDPLþQLHPDMOL(PDMOLUDQHQDSUDYH]DSURFHVQRRSUHPRGHO
2GSRUQRVWSURWLWRSORWQHPXXGDUX,62
Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3:
Thermal shock resistance (ISO 28721-3:2008)
Emails und Emaillierungen - Emaillierte Apparate für verfahrenstechnische Anlagen - Teil
3: Temperaturschockbeständigkeit (ISO 28721-3:2008)
Émaux vitrifiés - Appareils émaillés pour les installations industrielles - Partie 3:
Résistance au choc thermique (ISO 28721-3:2008)
Ta slovenski standard je istoveten z: EN ISO 28721-3:2011
ICS:
25.220.50 Emajlne prevleke Enamels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 28721-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 25.220.50 Supersedes EN 15159-3:2006
English Version
Vitreous and porcelain enamels - Glass-lined apparatus for
process plants - Part 3: Thermal shock resistance (ISO 28721-
3:2008)
Émaux vitrifiés - Appareils émaillés pour les installations Emails und Emaillierungen - Emaillierte Apparate für
industrielles - Partie 3: Résistance au choc thermique (ISO verfahrenstechnische Anlagen - Teil 3:
28721-3:2008) Temperaturschockbeständigkeit (ISO 28721-3:2008)
This European Standard was approved by CEN on 17 March 2011.

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 obtained 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-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 28721-3:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 28721-3:2008 has been prepared by Technical Committee ISO/TC 107 “Metallic and other
inorganic coatings” of the International Organization for Standardization (ISO) and has been taken over as
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 October 2011, and conflicting national standards shall be withdrawn at
the latest by October 2011.
Attention is drawn 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 15159-3:2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 28721-3:2008 has been approved by CEN as a EN ISO 28721-3:2011 without any
modification.
INTERNATIONAL ISO
STANDARD 28721-3
First edition
2008-12-01
Vitreous and porcelain enamels —
Glass-lined apparatus for process
plants —
Part 3:
Thermal shock resistance
Émaux vitrifiés — Appareils émaillés pour les installations
industrielles —
Partie 3: Résistance au choc thermique

Reference number
ISO 28721-3:2008(E)
©
ISO 2008
ISO 28721-3:2008(E)
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ISO 28721-3:2008(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Terms and definitions. 1
3 Thermal shock diagram . 2
4 Heating/cooling diagram. 4
5 Quality designation. 6
Annex A (informative) Explanatory notes. 7
Bibliography . 8

ISO 28721-3:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 28721-3 was prepared by the European Committee for Standardization (CEN) (as EN 15159-3) and was
adopted, under a special “fast-track procedure”, by Technical Committee ISO/TC 107, Metallic and other
inorganic coatings, in parallel with its approval by the ISO member bodies.
ISO 28721 consists of the following parts, under the gener
...