Industrial furnaces and associated processing equipment - Safety requirements for steel converter and associated equipment (ISO/DIS 23495:2019)

8. Scope
This document applies for new steel converter and its associated equipment (hereinafter referred to as converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated in Annex B.
This document deals with significant hazards, hazardous situations and events relevant to the converter plant. It covers the intended use and foreseeable misuse.
This document specifies the safety requirements to be met during design, transport, setting up/installation, assembly, commissioning, operation, maintenance (as described in Clause 5) and decommissioning/dis¬assembly of the equipment.
NOTE 1   Assembly does not include erection because national regulations, e.g., national civil engineering laws and regulations or occupational health and safety regulations have to be considered.
This document applies to:
Steel converter and its associated equipment (see Annex B, Figure B.1) for the oxygen steelmaking process
   from charging hot metal/liquid steel and scrap;
   via oxygen refining and stirring;
   temperature measurement and sampling equipment;
   up to tapping including slag retaining device;
   cooling systems;
   maintenance devices (e.g., relining device, tap hole repair device, device for cleaning the converter mouth);
   process related interfaces/interactions (e.g., according to design, controls) to
o   process media,
o   primary and secondary gas cleaning plant,
o   material feeding systems and ladle alloying systems,
o   transfer cars for steel ladle and slag pot, and
o   charging/tapping equipment, e.g., crane, scrap chute, ladles and slag pots.
This document does not cover safety requirements for:
   usage of process media other than oxygen, nitrogen, argon and compressed air;
   primary and secondary gas cleaning plants;
   measuring devices with radioactive sources;
   material feeding systems and ladle alloying systems;
   transfer cars for steel ladle and slag pot;
   charging/tapping and de-slagging equipment, e.g., crane, scrap chutes, ladles and slag pots;
   auxiliary winches and hoists.
NOTE 2   For variations of converter process where other gases and process media, e.g., hydrocarbons, fuels, steam, etc. are used, additional safety measures have to be considered which are not covered in this safety standard.
NOTE 3   In case of revamping, this document can be used as a guideline for the specific parts to be revamped.

Sicherheit von Maschinen - Sicherheitsanforderungen an Stahlkonverter und zugehörige Einrichtungen (ISO/DIS 23495:2019)

Dieses Dokument gilt für neue Stahlkonverter und zugehörige Einrichtungen (nachfolgend als Konverteranlage bezeichnet), die bei der Herstellung von Kohlenstoffstahl oder nichtrostendem Stahl eingesetzt werden, wie in 3.1 definiert und in Anhang B illustriert.
Dieses Dokument behandelt die für die Konverteranlage zutreffenden signifikanten Gefährdungen, Gefährdungssituationen und -ereignisse. Die Norm deckt die bestimmungsgemäße Verwendung und eine vorhersehbare Fehlanwendung ab.
Dieses Dokument beschreibt die Anforderungen zur Sicherstellung der Sicherheit von Personen, die bei Konstruktion, Transport, Aufbau/Installation, Montage, Inbetriebnahme, Betrieb, Instandhaltung (siehe Abschnitt 5) und Außerbetriebnahme/Demontage der Anlage zu berücksichtigen sind.
ANMERKUNG 1   Montage beinhaltet nicht den Aufbau, da nationale Vorschriften, z. B. Nationale Gesetze und Vorschriften zum Bauwesen oder Gesundheits  und Sicherheitsvorschriften, beachtet werden müssen.
Dieses Dokument gilt für:
Stahlkonverter und zugehörige Einrichtungen (siehe Anhang B, Bild B.1) für das Sauerstoffblasverfahren:
—   von der Beschickung mit flüssigem Roheisen/Stahl und Schrott;
—   über Sauerstofffrischen und Spülen;
—   Temperaturmessung und Probenahmegeräte;
—   bis zum Abstich, einschließlich Schlackenrückhaltevorrichtungen;
—   Kühlsysteme;
—   Instandhaltungseinrichtungen (z. B. Ausmauerungsvorrichtung, Abstichloch-Reparatureinrichtung, Einrichtung für die Reinigung der Konvertermündung);
—   prozessbezogene Schnittstellen/Wechselwirkungen (z. B. auf Konstruktion und Steuerungen bezogen) zu:
—   Prozessmedien;
—   primären und sekundären Gasreinigungsanlagen;
—   Materialhandhabungssystemen und Pfannenzuschlagstoffsystem;
—   Transportwagen für Stahlpfannen und Schlackenkübel; und
—   Beschickungs-/Absticheinrichtungen, z. B. Krane, Schrottschurre, Pfannen und Schlackenkübel.
Dieses Dokument behandelt keine Sicherheitsanforderungen für:
—   die Verwendung anderer Prozessmedien als Sauerstoff, Stickstoff, Argon und Druckluft;
—   primäre und sekundäre Gasreinigungsanlagen;
—   Messeinrichtungen mit radioaktiven Quellen;
—   Materialhandhabungssysteme und Pfannenzuschlagstoffsysteme;
—   Transportwagen für Stahlpfannen und Schlackenkübel;
—   Beschickung/Abstich und Abschlackeinrichtungen, z. B. Krane, Schrottrutschen, Pfannen und Schlackenkübel;
—   Hilfs-Winden und -Hebevorrichtungen.
ANMERKUNG 2   Für Änderungen des Konverterprozesses, bei denen andere Gase und Prozessmedien, z. B. Kohlenwasserstoffe, Brennstoffe, Dampf usw., verwendet werden, müssen zusätzliche Sicherheitsmaßnahmen berücksichtigt werden, die nicht von dieser Sicherheitsnorm behandelt werden.
ANMERKUNG 3   Bei Modernisierungen kann diese Europäische Norm als Leitfaden für die zu modernisierenden Teile angewendet werden.

Fours industriels et équipements associés - Prescriptions de sécurité pour les convertisseur et d'équipement associés (ISO/DIS 23495:2019)

Industrijske peči in pripadajoča procesna oprema - Varnostne zahteve za peči za proizvodnjo jekla in pripadajočo opremo (ISO/DIS 23495:2019)

General Information

Status
Not Published
Current Stage
4098 - Decision to abandon - Enquiry
Completion Date
08-Apr-2020

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SLOVENSKI STANDARD
oSIST prEN ISO 23495:2019
01-julij-2019
Industrijske peči in pripadajoča procesna oprema - Varnostne zahteve za peči za
proizvodnjo jekla in pripadajočo opremo (ISO/DIS 23495:2019)

Industrial furnaces and associated processing equipment - Safety requirements for steel

converter and associated equipment (ISO/DIS 23495:2019)

Sicherheit von Maschinen - Sicherheitsanforderungen an Stahlkonverter und zugehörige

Einrichtungen (ISO/DIS 23495:2019)
Fours industriels et équipements associés - Prescriptions de sécurité pour les
convertisseur et d'équipement associés (ISO/DIS 23495:2019)
Ta slovenski standard je istoveten z: prEN ISO 23495
ICS:
25.180.01 Industrijske peči na splošno Industrial furnaces in general
77.180 Oprema za metalurško Equipment for the
industrijo metallurgical industry
oSIST prEN ISO 23495:2019 en,fr,de

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

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oSIST prEN ISO 23495:2019
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oSIST prEN ISO 23495:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23495
ISO/TC 244 Secretariat: JISC
Voting begins on: Voting terminates on:
2019-05-02 2019-07-25
Industrial furnaces and associated processing
equipment — Safety requirements for steel converter and
associated equipment

Fours industriels et équipements associés — Prescriptions de sécurité pour les convertisseur et

d'équipement associés
ICS: 13.100; 25.180.01
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
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 23495:2019(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 2019
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oSIST prEN ISO 23495:2019
ISO/DIS 23495:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

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

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

3 Terms, definitions and abbreviated terms ................................................................................................................................ 3

4 Significant hazards and risk assessment .................................................................................................................................... 6

5 Safety requirements and/or measures ......................................................................................................................................... 7

5.1 General ........................................................................................................................................................................................................... 7

5.1.1 Introduction ......................................................................................................................................................................... 7

5.1.2 Plann ing phase .................................................................................................................................................................. 7

5.1.3 Safety layout ...................................................................... ................................................................................................... 7

5.1.4 Safety devices and protective measures ...................................................................................................... 8

5.1.5 Hydraulic, pneumatic, gas, cooling and lubrication systems ..................................................... 9

5.1.6 Fluid systems carrying or containing fluids ............................................................................................. 9

5.1.7 Fluids not to be discharged to drains ............................................................................................................. 9

5.1.8 Personal protective equipment ........................................................................................................................10

5.1.9 Warning devices and safety signs ..................................................................................................................10

5.1.10 Access .....................................................................................................................................................................................10

5.1.11 Escape routes ...................................................................................................................................................................11

5.1.12 Electrical equipment .................................................................................................................................................11

5.1.13 Safety related control system .............................................................................................................................11

5.1.14 Surface temperatures and heat radiation ................................................................................................12

5.1.15 Ergonomics ........................................................................................................................................................................12

5.1.16 Fire protection ................................................................................................................................................................12

5.1.17 Operating stations for the steel converter ..............................................................................................12

5.1.18 Portable wired/wireless control box ..........................................................................................................13

5.1.19 Loss of energy ..................................................................................................................................................................13

5.1.20 Areas with special hazards .................. .................................................................................................................13

5.1.21 Cooling water systems .............................................................................................................................................14

5.1.22 Noise ........................................................................................................................................................................................14

5.1.23 Vibrations ............................................................................................................................................................................15

5.1.24 Linked Equipment .......................................................................................................................................................15

5.1.25 Hold-to-run control device and enabling button ..............................................................................15

5.1.26 Mechanical restraint devices ..............................................................................................................................15

5.1.27 Safety related software and parameters ..................................................................................................16

5.2 List of significant hazards, hazardous situations, safety requirements and/or measures .16

5.2.1 Structure of Table 1 ....................................................................................................................................................16

6 Verification of the safety requirements and/or protective/risk reduction measures .............28

6.1 General ........................................................................................................................................................................................................28

6.2 Required verification D .................................................................................................................................................................28

6.3 Required verification V, M and T ...........................................................................................................................................29

7 Information for use .........................................................................................................................................................................................30

7.1 General ........................................................................................................................................................................................................30

7.2 Warning devices and safety signs ........................................................................................................................................30

7.3 Accompanying documents .........................................................................................................................................................30

7.3.1 Instruction handbook ...............................................................................................................................................30

7.3.2 Machine/equipment declaration ....................................................................................................................30

7.3.3 Instruction for transport, setting up/installation ............................................................................31

7.3.4 Instruction about assembly, commissioning and dismantling ..............................................31

7.3.5 Operation instructions concerning the equipment.........................................................................31

7.3.6 Maintenance instructions .....................................................................................................................................34

7.4 Minimum marking ............................................................................................................................................................................35

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7.5 Training of personnel .....................................................................................................................................................................35

Annex A (normative) Safety requirements for electrical equipment andfor safety related

control systems ...................................................................................................................................................................................................36

Annex B (normative) Steel converter and its associated equipment for theoxygen

steelmaking process ......................................................................................................................................................................................38

Annex C (normative) Noise test code ................................................................................................................................................................39

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of EU Directive 2006/42/EC aimed to be coveredNOTE to the drafter,

Annex ZA to be removed before ISO publication ..................................................................................................................45

Bibliography .............................................................................................................................................................................................................................48

iv © ISO 2019 – All rights reserved
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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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 244, Industrial furnaces and associated

processing equipment, WG 7, Safety requirements for steelmaking equipment
© ISO 2019 – All rights reserved v
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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 have

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.
This document assumes that

— the steel converter is operated and maintained by adequately trained personnel (see 3.13 and 7.5);

— manual intervention for setting, adjustment and maintenance is accepted as part of the intended

use of the steel converter;

— the steel converter is used with adequate workplace lighting conforming to e.g., ISO 8995-1.

This document assumes that the input materials do not contain the following hazardous components:

— radioactive scrap;
— explosives;
— entrapped water/ice;
— closed containers;

— oversized scrap which can lead to water leakage due to collision with lances (see 7.3.5).

The charging should be done to avoid/minimize risk of explosion.

This document is of relevance, in particular, for the following stakeholder groups representing the

market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);

— health and safety bodies (regulators, accident prevention organizations, market surveillance etc.)

Others can be affected by the level of machinery safety achieved with the means of the document by the

above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);

— machine users/employees (e.g., trade unions, organizations for people with special needs);

— service providers, e.g., for maintenance (small, medium and large enterprises);

— consumers (in case of machinery intended for use by consumers).

The above-mentioned stakeholder groups have been given the possibility to participate at the drafting

process of this document.
vi © ISO 2019 – All rights reserved
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oSIST prEN ISO 23495:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 23495:2019(E)
Industrial furnaces and associated processing
equipment — Safety requirements for steel converter and
associated equipment
1 Scope

This document applies for new steel converter and its associated equipment (hereinafter referred to as

converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated

in Annex B.

This document deals with significant hazards, hazardous situations and events relevant to the converter

plant. It covers the intended use and foreseeable misuse.

This document specifies the safety requirements to be met during design, transport, setting up/

installation, assembly, commissioning, operation, maintenance (as described in Clause 5) and

decommissioning/disassembly of the equipment.

NOTE 1 Assembly does not include erection because national regulations, e.g., national civil engineering laws

and regulations or occupational health and safety regulations have to be considered.

This document applies to:

Steel converter and its associated equipment (see Annex B, Figure B.1) for the oxygen steelmaking process

— from charging hot metal/liquid steel and scrap;
— via oxygen refining and stirring;
— temperature measurement and sampling equipment;
— up to tapping including slag retaining device;
— cooling systems;

— maintenance devices (e.g., relining device, tap hole repair device, device for cleaning the

converter mouth);

— process related interfaces/interactions (e.g., according to design, controls) to

— process media,
— primary and secondary gas cleaning plant,
— material feeding systems and ladle alloying systems,
— transfer cars for steel ladle and slag pot, and
— charging/tapping equipment, e.g., crane, scrap chute, ladles and slag pots.
This document does not cover safety requirements for:
— usage of process media other than oxygen, nitrogen, argon and compressed air;
— primary and secondary gas cleaning plants;
— measuring devices with radioactive sources;
— material feeding systems and ladle alloying systems;
© ISO 2019 – All rights reserved 1
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— transfer cars for steel ladle and slag pot;

— charging/tapping and de-slagging equipment, e.g., crane, scrap chutes, ladles and slag pots;

— auxiliary winches and hoists.

NOTE 2 For variations of converter process where other gases and process media, e.g., hydrocarbons, fuels,

steam, etc. are used, additional safety measures have to be considered which are not covered in this safety

standard.

NOTE 3 In case of revamping, this document can be used as a guideline for the specific parts to be revamped.

2 Normative references

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.

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 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and

equipment
ISO 7000, Graphical symbols for use on equipment — Registered symbols

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 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction

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

contact with surfaces — Part 1: Hot surfaces

ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design

ISO 13849-2:2012, Safety of machinery — Safety-related parts of control systems — Part 2: Validation

ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design

2 © ISO 2019 – All rights reserved
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ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and

lower limbs
ISO 14118, Safety of machinery — Prevention of unexpected start-up

ISO 14119, Safety of machinery — Interlocking devices associated with guards — Principles for design and

selection

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 and general requirements of access

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)

ISO 14123-1, Safety of machinery — Reduction of risks to health resulting from hazardous substances

emitted by machinery — Part 1: Principles and specifications for machinery manufacturers

ISO 14123-2, Safety of machinery — Reduction of risks to health resulting from hazardous substances

emitted by machinery — Part 2: Methodology leading to verification procedures

IEC 60204-1:2006, Edition 5.1:2009, Safety of machinery — Electrical equipment of machines — Part 1:

General requirements

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 62061:2005, Safety of machinery — Functional safety of safety-related electrical, electronic and

programmable electronic control systems (Note: To be replaced by IEC 44/788/CD (2017-02))

ISO 13854, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body

IEC 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989 + A1: 1999 + A2: 2013)

3 Terms, definitions and abbreviated terms

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

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/

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

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3.1
steel converter
tiltable unit for the production of carbon or stainless steel

Note 1 to entry: This tiltable unit is mainly consisting of a vessel with refractory lining, trunnion ring, vessel

suspension system, tilting drive, etc.
3.2
associated equipment

additional equipment for the production of carbon steel or stainless steel by means of a steel converter

Note 1 to entry: For associated equipment, e.g., lances, see Figure B.1.
3.3
refining

conversion of hot metal to carbon steel or stainless steel by elimination of (mainly) carbon (and other

unwanted elements like silicon, phosphor) using oxygen supply

Note 1 to entry: Refining processes differ in oxygen supply from top, bottom or a combination of both; and

optional gas stirring
3.4
production process
all production-related activities between charging to tapping
3.5
maintenance devices
devices to maintain the converter

Note 1 to entry: Such devices are, e.g., relining device, tap hole repair device, clean-up device for converter mouth

3.6
manual mode
every single function/movement will be individually triggered by the operator
3.7
special control modes
dedicated modes activated by a specific device, to carry out operations
Note 1 to entry: e.g., like skull removal or slag splashing
3.8
maintenance
all activities carried out outside the production process
3.8.1
inspection
basic checks (e.g., visual) of equipment
3.8.2
service

periodic exchange of lances, cleaning (e.g., lance, converter mouth), lubrication, adjustment of limit

switches
3.8.3
repair

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

energy)
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3.8.4
relining

all activities from shut down of converter for relining up to end of pre-heating (including converter

vessel exchange or parts of it, refractory breakout)
3.8.5
skull removal

special procedure for removing the skull inside the converter by using the blowing lance

3.9
ladle

vessel with refractory lining to collect, treat, transport and charge/discharge hot metal/steel

3.10
slag pot
vessel to collect, treat and transport slag
3.11
scrap chute
scrap charging container used to charge scrap into the converter
3.12
work stations
predefined locations for personnel used for production or maintenance
3.12.1
converter control room

main control room in which the control desk and monitoring facilities for a steel converter are located

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

process.
3.12.2
local control stands
control units usually situated adjacent to the equipment

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

e.g., during charging or tapping.
3.12.3
portable control box
mobile control units connected to the control system, wired or wireless
Note 1 to entry: For example, to position equipment
...

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