Safety in installations for electroheating and electromagnetic processing - Part 8: Particular requirements for electroslag remelting furnaces

IEC 60519-8:2020 specifies particular safety requirements for electroslag remelting equipment and installations. This document specifies safety requirements applicable to mainly electroheating installations for remelting and, in some cases, for refining processes of metals through direct resistance heating of a conductive slag. The object of this document is to specify the particular requirements for the safety of persons in or around an electroslag remelting furnace. The general requirements are included in IEC 60519-1. This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the structure has been redrafted according to IEC 60519-1:2020; b) the Scope has been redrafted; c) the terms and definitions, normative references and bibliography have been updated and completed; d) all requirements and content from IEC 60519-8:2005 that have been included in IEC 60519‑1:2020 have been removed to avoid any duplication.

Sicherheit in Elektroerwärmungsanlagen und Anlagen für elektromagnetische Bearbeitungsprozesse - Teil 8: Besondere Anforderungen für Elektroschlacke-Umschmelzöfen

Sécurité dans les installations destinées au traitement électrothermique et électromagnétique - Partie 8: Exigences particulières pour fours de refusion sous laitier électroconducteur

L’IEC 60519-8:2020 spécifie les exigences de sécurité particulières pour les équipements et les installations de refusion sous laitier électroconducteur. Le présent document spécifie les exigences de sécurité applicables principalement aux installations électrothermiques pour la refusion et, dans certains cas, pour des processus d’affinage des métaux au moyen d’un laitier conducteur chauffé par résistance directe. L’objet du présent document vise à préciser les exigences particulières relatives à la sécurité des personnes dans ou à proximité des fours de refusion sous laitier électroconducteur. Les exigences générales sont traitées dans l'IEC 60519-1. Cette troisième édition annule et remplace la deuxième édition parue en 2005. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) la structure a été révisée en fonction de l’IEC 60519-1:2020; b) le domaine d’application a été révisé; c) les termes et définitions, les références normatives et la bibliographie ont été mis à jour et complétés; d) toutes les exigences et le contenu de l’IEC 60519-8:2005 ayant été inclus dans l’IEC 60519‑1:2020 ont été supprimés afin d’éviter toute répétition.

Varnost pri električnih grelnih inštalacijah in elektromagnetni obdelavi - 8. del: Posebne zahteve za peči za pretaljevanje žlindre (IEC 60519-8:2020)

General Information

Status
Published
Current Stage
6060 - Document made available
Due Date
26-Jun-2020
Completion Date
26-Jun-2020

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SLOVENSKI STANDARD
SIST EN IEC 60519-8:2020
01-oktober-2020
Nadomešča:
SIST EN 60519-8:2005

Varnost pri električnih grelnih inštalacijah in elektromagnetni obdelavi - 8. del:

Posebne zahteve za peči za pretaljevanje žlindre (IEC 60519-8:2020)

Safety in Installations for electroheating and electromagnetic processing - Part 8:

Particular requirements for electroslag remelting furnaces (IEC 60519-8:2020)
Sicherheit in Elektroerwärmungsanlagen und Anlagen für elektromagnetische
Bearbeitungsprozesse - Teil 8: Besondere Anforderungen für Elektroschlacke-
Umschmelzöfen (IEC 60519-8:2020)
Sécurité dans les installations destinées au traitement électrothermique et

électromagnétique - Partie 8: Exigences particulières pour fours de refusion sous laitier

électroconducteur (IEC 60519-8:2020)
Ta slovenski standard je istoveten z: EN IEC 60519-8:2020
ICS:
25.180.10 Električne peči Electric furnaces
SIST EN IEC 60519-8:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60519-8:2020
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SIST EN IEC 60519-8:2020
EUROPEAN STANDARD EN IEC 60519-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 25.180.10 Supersedes EN 60519-8:2005 and all of its amendments
and corrigenda (if any)
English Version
Safety in installations for electroheating and electromagnetic
processing - Part 8: Particular requirements for electroslag
remelting furnaces
(IEC 60519-8:2020)

Sécurité dans les installations destinées au traitement Sicherheit in Elektroerwärmungsanlagen und Anlagen für

électrothermique et électromagnétique - Partie 8: Exigences elektromagnetische Bearbeitungsprozesse - Teil 8:

particulières pour fours de refusion sous laitier Besondere Anforderungen für Elektroschlacke-

électroconducteur Umschmelzöfen
(IEC 60519-8:2020) (IEC 60519-8:2020)

This European Standard was approved by CENELEC on 2020-06-11. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60519-8:2020 E
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SIST EN IEC 60519-8:2020
EN IEC 60519-8:2020 (E)
European foreword

The text of document 27/1127/FDIS, future edition 3 of IEC 60519-8, prepared by IEC/TC 27

"Industrial electroheating and electromagnetic processing" was submitted to the IEC-CENELEC

parallel vote and approved by CENELEC as EN IEC 60519-8:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-03-11

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-06-11

document have to be withdrawn

This document supersedes EN 60519-8:2005 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 60519-8:2020 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60779 NOTE Harmonized as EN 60779
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SIST EN IEC 60519-8:2020
EN IEC 60519-8:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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 referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Clause 2 of IEC 60519-1:2020 is applicable with the following additions:
Publication Year Title EN/HD Year
IEC 60519-1 - Safety in installations for electroheating EN IEC 60519-1 -
and electromagnetic processing - Part 1:
General requirements
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SIST EN IEC 60519-8:2020
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SIST EN IEC 60519-8:2020
IEC 60519-8
Edition 3.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in installations for electroheating and electromagnetic processing –
Part 8: Particular requirements for electroslag remelting furnaces
Sécurité dans les installations destinées au traitement électrothermique
et électromagnétique –
Partie 8: Exigences particulières pour fours de refusion sous laitier
électroconducteur
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.180.10 ISBN 978-2-8322-8267-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 60519-8:2020
– 2 – IEC 60519-8:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Classification and sub-division of equipment and installations ......................................... 7

5 Risk assessment ............................................................................................................. 7

6 General provisions........................................................................................................... 7

7 Protection against hazards from electric shock ................................................................ 7

8 Protection against hazards from electric or magnetic fields .............................................. 8

9 Protection against hazards from radiation ........................................................................ 8

10 Protection against hazards from thermal influences ......................................................... 8

11 Protection against hazards from fire .............................................................................. 10

12 Protection against hazards from fluids ........................................................................... 10

13 Specific requirements for components and subassemblies ............................................ 10

14 Control of the installation or equipment .......................................................................... 10

15 Protection against mechanical hazards .......................................................................... 11

16 Protection against hazards resulting from use ............................................................... 12

17 EMC .............................................................................................................................. 12

18 Verification and testing .................................................................................................. 12

19 Information for use ........................................................................................................ 13

Annex A (normative) List of significant hazards .................................................................... 15

Annex B (normative) Limits to touch currents ....................................................................... 16

Annex C (normative) Non-coherent optical radiation – Limits and risks classes .................... 17

Annex D (normative) Electric and magnetic fields ................................................................ 18

Annex E (normative) Surface temperature limits .................................................................. 19

Annex F (normative) EH, EPM and fire................................................................................. 20

Annex G (normative) Marking and warning ........................................................................... 21

Annex H (informative) Guidelines on using this document .................................................... 22

Annex I (informative) Connection with ISO 13577 (all parts)................................................. 23

Annex J (informative) Requirements specific to the EU and associated countries................. 24

Bibliography .......................................................................................................................... 25

Table A.1.101 – List of hazards dealt with in this document and added to Table A.1 of

Part 1.................................................................................................................................... 15

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SIST EN IEC 60519-8:2020
IEC 60519-8:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN INSTALLATIONS FOR ELECTROHEATING
AND ELECTROMAGNETIC PROCESSING –
Part 8: Particular requirements for electroslag remelting furnaces
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60519-8 has been prepared by IEC technical committee 27:

Industrial electroheating and electromagnetic processing.

This third edition cancels and replaces the second edition published in 2005. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) the structure has been redrafted according to IEC 60519-1:2020;
b) the Scope has been redrafted;

c) the terms and definitions, normative references and bibliography have been updated and

completed;
d) all requirements and content from IEC 60519-8:2005 that have been included in
IEC 60519-1:2020 have been removed to avoid any duplication.
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SIST EN IEC 60519-8:2020
– 4 – IEC 60519-8:2020 © IEC 2020
The text of this International Standard is based on the following documents:
FDIS Report on voting
27/1127/FDIS 27/1129/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60519 series, published under the general title Safety in

installations for electroheating and electromagnetic processing, can be found on the IEC

website.

Future standards in this series will carry the new general title as cited above. Titles of existing

standards in this series will be updated at the time of the next edition.

This part of IEC 60519 is to be read in conjunction with Part 1. It supplements or modifies the

corresponding clauses of Part 1. Where the text indicates a “modification” of, "addition" to or a

"replacement" of the relevant provision of Part 1, these changes are made to the relevant text

of Part 1. Where no change is necessary, the words "This clause of Part 1 is applicable" are

used. When a particular subclause of Part 1 is not mentioned in this part, that subclause

applies as far as is reasonable. When a particular subclause of Part 1 is not applicable, the

word “Void” is used.

Additional specific provisions to those in Part 1, given as individual clauses or subclauses, are

numbered starting from 101.
NOTE The following numbering system is used:

– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;

– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101,

including those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN IEC 60519-8:2020
IEC 60519-8:2020 © IEC 2020 – 5 –
INTRODUCTION

The scope of this document covers very different types and designs of equipment used for

many different purposes by the industry. It is intended to cover all industrial equipment based

on electroslag heating of the workload, with examples described in Clause 1.
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SIST EN IEC 60519-8:2020
– 6 – IEC 60519-8:2020 © IEC 2020
SAFETY IN INSTALLATIONS FOR ELECTROHEATING
AND ELECTROMAGNETIC PROCESSING –
Part 8: Particular requirements for electroslag remelting furnaces
1 Scope
This clause of Part 1 is modified as follows.
Modification:

This part of IEC 60519 specifies particular safety requirements for electroslag remelting

equipment and installations.

This document specifies safety requirements applicable to mainly electroheating installations

for remelting and, in some cases, for refining processes of metals through direct resistance

heating of a conductive slag.

The object of this document is to specify the particular requirements for the safety of persons

in or around an electroslag remelting furnace. The general requirements are included in

IEC 60519-1.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:

IEC 60519-1, Safety in installations for electroheating and electromagnetic processing –

Part 1: General requirements
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.2 Equipment and state of equipment
Addition:
3.2.101
electroslag remelting furnace

remelting furnace in which the charge, usually a consumable electrode, is remelted by direct

resistance heating of an electrical conductive molten slag
Note 1 to entry: The slag is contained in a mould (crucible).
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SIST EN IEC 60519-8:2020
IEC 60519-8:2020 © IEC 2020 – 7 –
3.3 Parts and accessories
Additions:
3.3.101
multi-station configuration
electroslag remelting furnace configuration having more than one melt station
3.3.102
cooling-water flow rate
addition of the following flow rates:
– flow rate of water to cool mould and base plate
– flow rate of water to cool high-current line
– flow rate of water to cool the furnace transformer
– flow rate of water to cool the other elements of the furnace
Note 1 to entry: The cooling-water flow rate is expressed in m /h.
4 Classification
...

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