Industrial furnaces and associated processing equipment - Safety requirements for machinery and equipment for production of steel by electric arc furnaces (ISO/DIS 13578:2016)

ISO 13578:2017 specifies the general safety requirements for electric arc furnaces (EAF) to melt steel not containing radioactive material.
NOTE Radioactive material is considered to be detected in front of the steel plant entrance.
ISO 13578:2017 deals with significant hazards, hazardous situations and events as listed in Table 1 pertinent to EAF, when used as intended and under conditions foreseen by the manufacturer, and also includes foreseeable faults and malfunctions in case of misuse.
ISO 13578:2017 also specifies criteria for the plant and equipment integrated in the production process.
ISO 13578:2017 specifies the requirements to be followed during design to ensure the safety of persons, which are to be met during transport, assembly, commissioning, operation, maintenance and decommissioning of the equipment.
ISO 13578:2017 assumes that installations are operated and maintained by adequately trained personnel. Manual intervention for setting, adjustment and maintenance is accepted as part of the normal use of the equipment.
ISO 13578:2017 covers the following equipment (see Annex B, Tables B.1 and B.2, and Annex C, Figures C.1 and C.2):
- EAF with alternating current (AC) technology;
- EAF with direct current (DC) technology;
- scrap preheating technology;
- associated equipment/devices (e.g. inert gas stirring, carbon and oxygen injection systems).
The following equipment is not covered by ISO 13578:2017:
- induction furnace;
- resistance-arc furnace (e.g. submerged arc furnace);
- electron beam furnace;
- plasma furnace;
- other electrical furnaces used in secondary steelmaking, e.g. ladle furnace.
ISO 13578:2017 does not specify safety requirements for the following equipment, which can be an integral or complementary part of the equipment covered by the scope:
- cranes;
- shell lifting cross beam;
- scrap basket, steel ladle and slag pot;
- transport cars for scrap baskets, steel ladles and slag pots;
- dedusting system;
- "dog house" and "elephant house" (furnace enclosures for environmental reasons);
- alloying system;
- separate scrap drying equipment;
- furnace transformer and high-voltage system;
- robots/manipulators (e.g. for temperature measurement and sampling).

Fours industriels et équipements associés - Exigences de sécurité pour les machines et les équipements pour la production d'acier par four à arc électrique (ISO/DIS 13578:2016)

Le présent document spécifie les spécifications générales de sécurité pour les fours à arc électrique (FAE) destinés à la fusion de l'acier, ne contenant pas de substances radioactives.
NOTE Les substances radioactives sont considérées comme détectées devant l'entrée de l'aciérie.
Le présent document traite des phénomènes dangereux, situations et évènements dangereux significatifs énumérés dans le Tableau 1, pertinents pour les FAE lorsqu'ils sont utilisés normalement et dans les conditions prévues par le fabricant. Il inclut aussi les défauts et dysfonctionnements prévisibles en cas de mauvais usage.
Le présent document spécifie également des critères pour les installations et équipements intégrés au processus de production.
Le présent document spécifie les spécifications à respecter lors de la conception pour assurer la sécurité des personnes pendant le transport, l'assemblage, la mise en service, l'utilisation, la maintenance et la mise hors service de l'équipement.
Le présent document suppose que les installations sont exploitées et entretenues par un personnel dûment qualifié. Une intervention manuelle pour le réglage, l'ajustement et la maintenance est acceptée comme faisant partie de l'utilisation normale des équipements.
Le présent document concerne les équipements suivants (voir l'Annexe B, Tableaux B.1 et B.2, et l'Annexe C, Figures C.1 et C.2):
— FAE avec technologie à courant alternatif (CA);
— FAE avec technologie à courant continu (CC);
— technologie de préchauffage de la ferraille;
— équipements/dispositifs associés (par exemple agitation de gaz inerte, systèmes d'injection de carbone et d'oxygène).
Les équipements suivants ne sont pas couverts par le présent document:
— four à induction;
— four à résistance à arc (par exemple four à arc immergé);
— four à faisceau d'électrons;
— four à plasma;
— autres fours électriques utilisés pour la production d'acier secondaire, par exemple four à poche.
Le présent document ne spécifie pas les exigences de sécurité des équipements suivants, qui peuvent faire partie intégrante ou venir compléter les équipements couverts par le domaine d'application:
— grues;
— poutre transversale pour le levage de la virole;
— panier à ferrailles, poche d'acier et poche à laitier;
— wagons de transport des paniers à ferrailles, poches d'acier et poches à laitier;
— système de dépoussiérage;
— «dog house» et «elephant house» (enceintes du four prévues pour des raisons environnementales);
— système d'alliage;
— équipement séparé de séchage de la ferraille;
— transformateur du four et système haute tension;
— robots/manipulateurs (par exemple pour le mesurage de la température et l'échantillonnage).

Industrijske peči in pripadajoča procesna oprema - Varnostne zahteve za stroje in opremo za proizvodnjo jekla z električnimi obločnimi pečmi (ISO/DIS 13578:2016)

General Information

Status
Not Published
Current Stage
4098 - Decision to abandon - Enquiry
Due Date
12-Apr-2017
Completion Date
11-Jun-2018

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SLOVENSKI STANDARD
oSIST prEN ISO 13578:2016
01-julij-2016

,QGXVWULMVNHSHþLLQSULSDGDMRþDSURFHVQDRSUHPD9DUQRVWQH]DKWHYH]DVWURMHLQ

RSUHPR]DSURL]YRGQMRMHNOD]HOHNWULþQLPLREORþQLPLSHþPL ,62',6

Industrial furnaces and associated processing equipment - Safety requirements for

machinery and equipment for production of steel by electric arc furnaces (ISO/DIS

13578:2016)

Fours industriels et équipements associés - Exigences de sécurité pour les machines et

les équipements pour la production d'acier par four à arc électrique (ISO/DIS
13578:2016)
Ta slovenski standard je istoveten z: prEN ISO 13578
ICS:
13.110 Varnost strojev Safety of machinery
25.180.10 (OHNWULþQHSHþL Electric furnaces
77.180 Oprema za metalurško Equipment for the
industrijo metallurgical industry
oSIST prEN ISO 13578:2016 en,fr,de

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

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oSIST prEN ISO 13578:2016
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oSIST prEN ISO 13578:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 13578
ISO/TC 244 Secretariat: JISC
Voting begins on: Voting terminates on:
2016-05-12 2016-08-11
Industrial furnaces and associated processing equipment
- Safety requirements for machinery and equipment for
production of steel by electric arc furnaces

Fours industriels et équipements associés — Exigences de sécurité pour les machines et les équipements

pour la production d’acier par four à arc électrique
ICS: 13.100; 25.180.01
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 13578:2016(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2016
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oSIST prEN ISO 13578:2016
ISO/DIS 13578:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
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Tel. +41 22 749 01 11
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copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
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oSIST prEN ISO 13578:2016
ISO/DIS 13578:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

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

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

4 Symbols and abbreviated terms ........................................................................................................................................................... 6

5 Safety requirements and/or measures ......................................................................................................................................... 6

5.1 General ........................................................................................................................................................................................................... 6

5.1.1 General design requirements ................................................................................................................................ 6

5.1.2 Electrical melting power supply ......................................................................................................................... 7

5.1.3 Electrical low voltage supply and control system ............................................................................... 7

5.1.4 Bonding and grounding of mechanical furnace parts ...................................................................... 7

5.1.5 Hydraulic, pneumatic, cooling and lubrication systems ................................................................ 7

5.1.6 Molten material ................................................................................................................................................................. 7

5.1.7 Linked equipment ........................................................................................................................................................... 8

5.1.8 Ergonomic principles ................................................................................................................................................... 8

5.1.9 Leakage from hydraulic system and EAF-Transformer ................................................................... 9

5.1.10 Access ........................................................................................................................................................................................ 9

5.1.11 Safety related control system .............................................................................................................................10

5.1.12 Danger zone ......................................................................................................................................................................10

5.1.13 Blocking device for tilting platform ..............................................................................................................10

5.1.14 Gantry movement ........................................................................................................................................................10

5.1.15 Loss of energy ..................................................................................................................................................................10

5.1.16 Electrode clamp .............................................................................................................................................................11

5.1.17 EAF control room .........................................................................................................................................................11

5.1.18 Local control stand ........................................................................................................................................... ...........11

5.1.19 Portable wireless control box ............................................................................................................................11

5.1.20 Personal protective equipment (PPE) ........................................................................................................11

5.1.21 Warnings ..............................................................................................................................................................................12

5.1.22 Surface temperatures and heat radiation ................................................................................................12

5.1.23 Noise ........................................................................................................................................................................................12

5.1.24 Vibrations ............................................................................................................................................................................13

5.1.25 Special requirements for explosion prevention and protection ..........................................13

5.1.26 Safety layout ...................................................................... ................................................................................................14

5.2 List of significant hazards, hazardous situations, safety requirements and/or measures .14

6 Verification of the safety requirements and/or measures ....................................................................................18

7 Information for use .........................................................................................................................................................................................19

7.1 General ........................................................................................................................................................................................................19

7.2 Warning devices and safety signs ........................................................................................................................................19

7.3 Minimum marking ............................................................................................................................................................................19

7.4 Accompanying documents .........................................................................................................................................................19

7.4.1 Instruction handbook ...............................................................................................................................................19

7.4.2 Maintenance manual .................................................................................................................................................22

7.5 Training of personnel .....................................................................................................................................................................22

Annex A (normative) Noise test code ................................................................................................................................................................24

Annex B (normative) Equipment covered by this document ...................................................................................................28

Annex C (informative) Examples of electric arc furnaces ............................................................................................................30

Bibliography .............................................................................................................................................................................................................................32

© ISO 2016 – All rights reserved iii
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oSIST prEN ISO 13578:2016
ISO/DIS 13578:2016(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 13578 was prepared by Technical Committee ISO/TC 244, Industrial furnaces and associated

processing equipment.
iv © ISO 2016 – All rights reserved
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oSIST prEN ISO 13578:2016
ISO/DIS 13578:2016(E)
Introduction
This document is a type C standard as stated in ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and events are

covered are indicated in the scope of this document.

When provisions of this type C standard are different from those which are stated in type A or B

standards, the provisions of this type C standard take precedence over the provisions of the other

standards, for machines that have been designed and built according to the provisions of this type C

standard.

Where for clarity an example of a preventive measure is given in this document, this should not been

considered as the only possible solution. Any other solution leading to the same risk reduction is

permissible if an equivalent level of safety is achieved.
© ISO 2016 – All rights reserved v
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oSIST prEN ISO 13578:2016
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oSIST prEN ISO 13578:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 13578:2016(E)
Industrial furnaces and associated processing equipment
- Safety requirements for machinery and equipment for
production of steel by electric arc furnaces
1 Scope

This document specifies the general safety requirements for electric arc furnaces (EAF) to melt steel

not containing radioactive material.

NOTE Radioactive material is considered to be detected in front of the steel plant entrance

This document deals with significant hazards, hazardous situations and events as listed in Table 1

pertinent to EAF, when used as intended and under conditions foreseen by the manufacturer, but also

includes foreseeable faults and malfunctions in case of misuse.

This document specifies also criteria for the plant and equipment integrated in the production process.

This document specifies the requirements to be followed up during design to ensure the safety of

persons which are to be met during transport, assembly, commissioning, operation, maintenance and

decommissioning of the equipment.

This document assumes that installations are operated and maintained by adequately trained

personnel. Manual intervention for setting, adjustment and maintenance is accepted as part of the

normal use of the equipment.
This document covers the following equipment (see Annex B):
— EAF with AC technology (alternating current);
— EAF with DC technology (direct current);
— scrap pre-heating technology;

— associated equipment/devices (e.g., inert gas stirring, carbon and oxygen injection systems).

The following equipment is not covered by this document:
— induction furnace;
— resistance-arc furnace (e.g., submerged arc furnace);
— electron beam furnace;
— plasma furnace;
— other electrical furnaces used in secondary steelmaking, e.g., ladle furnace.

This document does not specify safety requirements for the following equipment, which can be an

integral or complementary part of the equipment covered by the Scope:
a) cranes;
b) shell lifting cross beam;
c) scrap basket, steel ladle and slag pot;
d) transport cars for scrap baskets, steel ladles and slag pots;
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oSIST prEN ISO 13578:2016
ISO/DIS 13578:2016(E)
e) dedusting system;

f) “dog house” and “elephant house” (furnace enclosures for environmental reasons);

g) alloying system;
h) separate scrap drying equipment;
i) furnace transformer and high voltage system;
j) robots/manipulators (e.g., for temperature measurement and sampling).
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.

ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety

signs and safety markings

ISO 3864-2, Graphical symbols — Safety colours and safety signs — Part 2: Design principles for product

safety labels

ISO 3864-3, Graphical symbols — Safety colours and safety signs — Part 3: Design principles for graphical

symbols for use in safety signs

ISO 4413, Hydraulic fluid power — General rules and safety requirements for systems and their components

ISO 4414, Pneumatic fluid power — General rules and safety requirements for systems and their components

ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment

ISO 7010, Graphical symbols — Safety colours and safety signs — Registered safety signs

ISO 7731, Ergonomics — Danger signals for public and work areas — Auditory danger signals

ISO 11064-1, Ergonomic design of control centres — Part 1: Principles for the design of control centres

ISO 11202:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission

sound pressure levels at a work station and at other specified positions applying approximate environmental

corrections

ISO 11428, Ergonomics — Visual danger signals — General requirements, design and testing

ISO 11429, Ergonomics — System of auditory and visual danger and information signals

ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment —

Part 1: Planning

ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction

ISO 13574, Industrial furnaces and associated processing equipment — Vocabulary

ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to

contact with surfaces — Part 1: Hot surfaces

ISO 13849-1/A1:2013, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design

ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and

lower limbs
2 © ISO 2016 – All rights reserved
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ISO 14120, Safety of machinery — Guards — General requirements for the design and construction of fixed

and movable guards

ISO 14122-1, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed

means of access between two levels

ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms

and walkways

ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders

and guard-rails

ISO 14122-4, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders

ISO 16069, Graphical symbols — Safety signs — Safety way guidance systems (SWGS)

IEC 60204-1Edition 5.1:2009, Safety of machinery — Electrical equipment of machines — Part 1: General

requirements

IEC 60519-4, Safety in electroheat installations — Part 4: Particular requirements for arc furnace

installations

IEC 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,

acoustic and tactile signals

IEC 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking

IEC 61511-1, Functional safety — Safety instrumented systems for the process industry sector — Part 1:

Framework, definitions, system, hardware and software requirements

IEC 62061Edition 1.2:2015, Safety of machinery — Functional safety of safety-related electrical, electronic

and programmable electronic control systems

EN 13463-1:2009, Non-electrical equipment for use in potentially explosive atmospheres — Part 1: Basic

method and requirements
3 Terms and definitions

For the purpose of this document, the terms and definitions given in ISO 12100, ISO 13574 and the

following apply.

NOTE 1 to entry Definition used in ISO standards referred to in this document are also valid for this document.

3.1
charge material
material which is charged into the furnace
Note 1 to entry: to entry: e.g., steel scrap, DRI, HBI, hot metal, FeCr, alloys
3.2
heat cycle

tap-to-tap time period between two consecutive tappings with defined power-on and power-off time

3.3
hydraulic fluid
fluid used to transmit force via hydraulic pressure
Note 1 to entry: to entry: see ISO 6743-4
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3.4
fire-resistant hydraulic fluid

hydraulic fluid that is difficult to ignite and shows little tendency to propagate flame

[SOURCE: ISO 5598, 3.2.271]
3.5
ladle
vessel to collect, transport and charge/discharge hot metal/steel
3.6
work station

predefined locations for personnel conducting control, production or maintenance activities, the main

work stations are:
3.6.1
EAF control room

main control room in which the control consoles and monitoring facilities for an EAF are located

Note 1 to entry: to entry: It is a location where operating personnel is required permanently during the

production process
3.6.2
local control stands
control units usually situated adjacent to the equipment

Note 1 to entry: to entry: It is a location where operating personnel is required temporarily during the

production process, e.g., during tapping
3.6.3
portable wireless control box
mobile control units connected to the control system
Note 1 to entry: to entry: e.g., to position equipment more precisely
3.6.4
maintenance points
locations where personnel are required during maintenance

Note 1 to entry: to entry: All above mentioned stations could also be used for maintenance

3.7
tilting
movement of the furnace to discharge molten steel or slag from foreseen openings
3.8
blocking device
device to block the equipment in the desired position
3.9
gantry
structure used for lifting and swinging roof and columns/electrode arms
3.10
high voltage switch gear

furnace breaker to connect and disconnect the EAF to/from electrical high voltage supply

3.11
reactor
device to increase the reactance of the EAF system
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ISO/DIS 13578:2016(E)
3.12
furnace transformer

device for the transformation of the high voltage electrical supply to arc voltage

3.13
alloying system
device to store and feed any metallic and non-metallic materials to/into the EAF
3.14
electrode nippling system

device, in which electrode strands can be stored or new electrode sections are added

3.15
dog house
furnace enclosure inside the EAF building close to the EAF

Note 1 to entry: to entry: It is serving as indirect fume extraction system and minimising noise

propagation. It is not covered by the scope.
3.16
elephant house
furnace enclosure as part of the EAF building

Note 1 to entry: to entry: It is serving as indirect fume extraction system and minimising noise

propagation. It is not covered by the scope.
3.17
gas cleaning system
equipment for the collection and processing of created off-gas
3.18
high current system
high current connection-line between transformer and electrode
3.19
trained personnel

persons with the knowledge of systems, background, experience and ability to operate and/or maintain

the equipment in the intended use and proper operation of the machinery/equipment

3.20
authorized personnel

trained persons who are nominated by the user to perform a specific task on a specific equipment

3.21
maintenance
all activities carried out outside the production process:
3.21.1
inspection
basic checks (e.g., visual) of equipment;
3.21.2
service

periodic exchange of lances, cleaning (e.g., lance, slag door area), lubrication, adjustment of limit

switches;
3.21.3
repair

repair or exchange of damaged components accompanied with complete shutdown (i.e. isolation of

energy);
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3.21.4
relining
all activities from shut down of EAF for relining up to start-up of the EAF
3.22
safety layout

graphic overview of the EAF with arrangement of safety-related elements and details

3.23
manufacturer

any natural or legal person declared as responsible for compliance with the requirements of the design

and/or manufacture of machinery

Note 1 to entry: to entry: The process of design and construction of machinery may involve several

individuals or companies, but one is declared as the manufacturer.
4 Symbols and abbreviated terms
For the purpose of this document, the following abbreviations apply.
AC Alternating Current;
DC Direct Current;
EAF Electric Arc Furnace;
EBT Eccentric Bottom Tap-Hole;
DRI Direct Reduced Iron;
HBI Hot Briquetted Iron;
HMI Human-Machine-Interface;
CCTV Closed Circuit Television.
5 Safety requirements and/or measures
5.1 General
5.1.1 General design requirements

EAF and equipment conforming to this document shall comply with the safety requirements and/or

measures of this clause.
This document assumes that:

— machinery is used with adequate workplace lighting conforming to ISO 8995-1or to local regulations.

The manufacturer shall undertake and record design calculations of the structural assembly according

the intended use, e.g., for steel sections, auxiliaries.

Safety devices shall be protected against damage to fulfil the intended function during continuous

operation in the respective area.

In particular the design shall include requirements and constructional details with respect to:

— accessibility;
— guards and protection;
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ISO/DIS 13578:2016(E)
— maintenance openings and clearance gaps for cleaning;
— escape routes;
— movement of machinery and material;
— safety during operation;
— safety devices, e.g. hold-to-run control, emergency stop;
— requirements for media systems;
— slag area, e.g. heat protected;

— emergency pit for liquid steel being able to contain the steel volume of the EAF;

— potential environmental conditions, e.g. seismic activities.
5.1.2 Electrical melting power supply

The electrical melting power supply, comprising of the high voltage switch gear, reactor (if applicable),

furnace transformer, AC/DC converters (if applicable) and interconnecting high current systems and

cables, shall meet the requirements as defined in IEC 60519-4.
5.1.3 Electrical low voltage supply and control system

The electrical low voltage supply, comprising of low voltage switch gear, control system and low voltage

cables, shall meet the requirements as defined IEC 60204-1 Edition 5.1.
5.1.4 Bonding and grounding of mechanical furnace parts

To prevent potential differences between mechanical furnace parts, all of these parts shall be bonded

and grounded according to IEC 60519-4.
5.1.5 Hydraulic, pneumatic, cooling and lubrication systems

Hydraulic and pneumatic fluid systems and their components shall meet the requirements as defined in

ISO 4413 and ISO 4414.

Instruction shall be given in the information for use about systems filled with fluids, which are likely

to solidify and/or change viscosity under extreme environmental temperatures and which may cause

hazardous situations.

The design of cooling systems, hydraulic and lubrication systems shall consider risks created by

temperature and pressure, ignition sources, including fire and toxic effects, as well as gas/dust

reactions.

Instructions shall be given how to deal with small and large water leakages inside the furnace. In case

of large leakages, indications of the water flow measurement shall be given to the control system to

initiate further actions, e.g., stop water flow.

Media, which have to be discharged into dedicated sumps, shall be specified. Equipment which is needed

for discharge shall be provided. Instructions for discharge shall be given in the information for use.

5.1.6 Molten material
Slag from furnace shall be guided to slag area (e.g., slag pot, slag pit).
Water and/or mois
...

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