EN ISO 28721-1:2019
(Main)Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 1: Quality requirements for apparatus, components, appliances and accessories (ISO 28721-1:2019)
Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 1: Quality requirements for apparatus, components, appliances and accessories (ISO 28721-1:2019)
This document specifies the quality requirements for apparatus, components, appliances and accessories of glass-lined steel (including semi-crystallized enamel coatings) and glass-lined steel castings used for process plants. It specifies the quality requirements and the tests to be carried out by the manufacturer as well as the actions to be taken to repair defects.
It is also applicable to glass-lined pumps, pump components and fittings.
It does not apply to glass-lined flanged steel pipes or glass-lined flanged steel fittings.
NOTE 1 Provisions for glass-lined flanged steel pipes and glass-lined flanged steel fittings are given in ISO 28721-4.
The test methods specified cover checking the enamel, the dimensional accuracy and the performance of apparatus and components.
This document is applicable to new apparatus and components as well as used items that have been re-enamelled.
It does not contain requirements regarding the chemical or physical properties of vitreous and porcelain enamels.
NOTE 2 Examples of test reports are given in Annex A.
Emails und Emaillierungen - Emaillierte Apparate für verfahrenstechnische Anlagen - Teil 1: Qualitätsanforderungen für Apparate, Apparateteile, Einbau- und Zubehörteile (ISO 28721-1:2019)
Dieses Dokument legt die Qualitätsanforderungen an in verfahrenstechnischen Anlagen eingesetzten Apparaten, Apparateteilen sowie Einbau- und Zubehörteilen aus emailliertem Stahl (einschließlich teilkristallisierten Emailschichten) und Stahlguss fest. Es legt die Qualitätsanforderungen und die beim Hersteller durchzuführenden Prüfungen und die für die Ausbesserung von Emaildefekten erforderlichen Maßnahmen fest.
Es gilt auch für emaillierte Pumpen, Pumpenteile und Armaturen.
Es gilt nicht für Flansch-Rohre und Flansch-Formstücke aus Stahl mit Emaillierung.
ANMERKUNG 1 Festlegungen für Flansch-Rohre und Flansch-Formstücke aus Stahl mit Emaillierung sind in ISO 28721 4 gegeben.
Die festgelegten Prüfverfahren dienen zur Überprüfung des Emails, der Maßhaltigkeit und der Funktionsweise der Apparate und Bauteile.
Dieses Dokument gilt für neue und gebrauchte reemaillierte Apparate und Bauteile.
Es legt keine Anforderungen an die chemischen und physikalischen Eigenschaften des Emails fest.
ANMERKUNG 2 Im Anhang A sind Beispiele für Prüfberichte angegeben.
Émaux vitrifiés - Appareils émaillés pour les installations industrielles - Partie 1: Exigences de qualité relatives aux appareillages, composants, appareils et accessoires (ISO 28721-1:2019)
Le présent document spécifie les exigences de qualité relatives aux appareillages, composants, appareils et accessoires en acier émaillé (y compris les revêtements en émail semi-cristallisé) et en acier moulé émaillé utilisés dans des installations industrielles. Il spécifie les exigences de qualité et les essais devant être effectués par le fabricant, ainsi que les actions nécessaires pour la réparation des défauts.
Il est également applicable aux pompes, composants de pompes et accessoires émaillés.
Il ne s'applique pas aux tuyaux ou raccords à brides en acier émaillé.
NOTE 1 Des dispositions relatives aux tuyaux et raccords à brides en acier émaillé figurent dans l'ISO 28721-4.
Les méthodes d'essai indiquées couvrent la vérification de l'émail, l'exactitude dimensionnelle et la performance des appareils et des composants.
Le présent document est applicable aux nouveaux appareils et composants ainsi qu'aux produits utilisés et réémaillés.
Il ne contient aucune exigence concernant les propriétés chimiques ou physiques des émaux vitrifiés.
NOTE 2 Des exemples de rapports d'essai figurent à l'Annexe A.
Steklasti in keramični emajli - Emajlirane naprave za procesno opremo - 1. del: Zahteve za kakovost naprav, sestavnih delov, aparatov in pribora (ISO 28721-1:2019)
Ta dokument določa zahteve za kakovost naprav, sestavnih delov, aparatov in pribora emajliranega jekla (vključno z delno kristaliziranimi emajliranimi prevlekami) in emajliranih jeklenih ulitkov, ki se uporabljajo za procesno opremo. Določa zahteve glede kakovosti in preskuse, ki jih izvede proizvajalec, kot tudi ukrepe, ki jih je treba izvesti za popravilo napak. Uporablja se tudi za emajlirane črpalke, sestavne dele črpalk in armature. Ne uporablja se za emajlirane jeklene cevi s prirobnico ali emajlirane jeklene armature s prirobnico. Navedene preskusne metode zajemajo preverjanje emajla, točnosti dimenzij ter delovanja naprav in sestavnih delov. Ta dokument se uporablja za nove naprave in sestavne dele ter uporabljene elemente, ki so bili znova emajlirani. Ne vsebuje zahtev v zvezi s kemijskimi ali fizikalnimi lastnostmi steklastih in porcelanastih emajlov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN ISO 28721-1:2011
Steklasti in keramični emajli - Emajlirane naprave za procesno opremo - 1. del:
Zahteve za kakovost naprav, sestavnih delov, aparatov in pribora (ISO 28721-
1:2019)
Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 1:
Quality requirements for apparatus, components, appliances and accessories (ISO
28721-1:2019)
Emails und Emaillierungen - Emaillierte Apparate für verfahrenstechnische Anlagen - Teil
1: Qualitätsanforderungen für Apparate, Apparateteile, Einbau- und Zubehörteile (ISO
28721-1:2019)
Émaux vitrifiés - Appareils émaillés pour les installations industrielles - Partie 1:
Exigences de qualité relatives aux appareillages, composants, appareils et accessoires
(ISO 28721-1:2019)
Ta slovenski standard je istoveten z: EN ISO 28721-1:2019
ICS:
25.220.50 Emajlne prevleke Enamels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 28721-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 25.220.50 Supersedes EN ISO 28721-1:2011
English Version
Vitreous and porcelain enamels - Glass-lined apparatus for
process plants - Part 1: Quality requirements for
apparatus, components, appliances and accessories (ISO
28721-1:2019)
Émaux vitrifiés - Appareils émaillés pour les Emails und Emaillierungen - Emaillierte Apparate für
installations industrielles - Partie 1: Exigences de verfahrenstechnische Anlagen - Teil 1:
qualité relatives aux appareillages, composants, Qualitätsanforderungen für Apparate, Apparateteile,
appareils et accessoires (ISO 28721-1:2019) Einbau- und Zubehörteile (ISO 28721-1:2019)
This European Standard was approved by CEN on 15 September 2019.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 28721-1:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 28721-1:2019) has been prepared by Technical Committee ISO/TC 107
"Metallic and other inorganic coatings" in collaboration with Technical Committee CEN/TC 262
“Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of
metals and alloys” 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 April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 28721-1:2011.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 28721-1:2019 has been approved by CEN as EN ISO 28721-1:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 28721-1
Second edition
2019-09
Vitreous and porcelain enamels —
Glass-lined apparatus for process
plants —
Part 1:
Quality requirements for apparatus,
components, appliances and
accessories
Émaux vitrifiés — Appareils émaillés pour les installations
industrielles —
Partie 1: Exigences de qualité relatives aux appareillages,
composants, appareils et accessoires
Reference number
ISO 28721-1:2019(E)
©
ISO 2019
ISO 28721-1:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2019 – All rights reserved
ISO 28721-1:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements . 2
4.1 General . 2
4.2 Design and quality of enamel finish . 2
4.3 Surface . 2
4.4 Defects . 2
4.4.1 General. 2
4.4.2 Defects unacceptable in the finished product . 2
4.4.3 Repairable defects . 3
4.4.4 Vessels and columns . 4
4.4.5 Accessories . 4
4.4.6 Fittings and pump components . 4
4.5 Coating thickness . 4
4.6 General tolerances . 4
4.7 Finish . 4
5 Testing . 5
5.1 General . 5
5.2 Visual examination . 5
5.3 High-voltage test . 5
5.4 Testing for cracks . 5
5.5 Coating thickness measurement. 5
5.6 Measurement of dimensions . 6
5.7 Determination of the concentricity of agitators and pump rotors . 6
5.7.1 General. 6
5.7.2 Agitators . 6
5.7.3 Pump rotors . 6
5.8 Performance testing . 6
5.9 Completeness check . 7
6 Manufacturing stages and inspections . 7
7 Repairing defects . 7
7.1 Repairing with plugs . 7
7.2 Removing impurities . 9
8 Test report . 9
9 Packaging and transportation .10
10 Inspection at delivery .10
Annex A (informative) Examples of test reports .11
Bibliography .18
...
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