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FprEN ISO 13577-4

(Main)

Industrial furnaces and associated processing equipment - Safety - Part 4: Protective systems (ISO/FDIS 13577-4:2022)

Industrial furnaces and associated processing equipment - Safety - Part 4: Protective systems (ISO/FDIS 13577-4:2022)

This document specifies the requirements for protective systems used in industrial furnaces and associated processing equipment (TPE).
The functional requirements to which the protective systems apply are specified in ISO 13577-1 ISO 13577-2 and ISO 13577-3.
This document is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This document is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to the protective systems manufactured before the date of its publication.

Industrielle Thermoprozessanlagen und dazugehörige Prozesskomponenten - Sicherheitsanforderungen - Teil 4: Schutzsysteme (ISO/FDIS 13577-4:2022)

Dieser Teil von ISO 13577 legt die Anforderungen an Schutzsysteme, die in Industrieöfen und zugehörigen Prozessanlagen (TPE) verwendet werden, fest.
Die funktionalen Anforderungen, die für Schutzsysteme gelten, werden in den anderen Teilen von ISO 13577 festgelegt.

Fours industriels et équipements associés - Sécurité - Partie 4: Systèmes de protection (ISO/FDIS 13577-4:2022)

Le présent document spécifie les spécifications relatives aux systèmes de protection utilisés dans des fours industriels et équipements associés (TPE).
Les spécifications fonctionnelles auxquelles s'appliquent les systèmes de protection sont spécifiées dans les ISO 13577‑1, ISO 13577‑2 et ISO 13577‑3.
Le présent document ne s'applique pas aux hauts fourneaux, aux convertisseurs (dans les aciéries), aux chaudières, aux appareils de chauffage (y compris les fours de reformage) dans les industries pétrochimiques et chimiques.
Le présent document n'est pas applicable au câblage électrique et au câblage de puissance en amont du panneau de commande/système de protection TPE.
Le présent document n'est pas applicable aux systèmes de protection fabriqués avant la date de sa publication.

Industrijske peči in pripadajoča procesna oprema - Varnost - 4. del: Zaščitni sistemi (ISO/FDIS 13577-4:2022)

General Information

Status
Not Published
ICS
13.100 - Occupational safety. Industrial hygiene
25.180.01 - Industrial furnaces in general
Technical Committee
CEN/TC 186 - Industrial thermoprocessing - Safety
Drafting Committee
CEN/TC 186/WG 4 - Particular safety requirments for hot dip galvanising-;Salt bath-; Material melting, remelting and liquid phase maintaining-; Vacuum-thermoprocessing
Current Stage
Ref Project
kSIST FprEN ISO 13577-4:2022 - Industrial furnaces and associated processing equipment - Safety - Part 4: Protective systems (ISO/FDIS 13577-4:2022)

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SLOVENSKI STANDARD
oSIST prEN ISO 13577-4:2021
01-september-2021
Industrijske peči in pripadajoča procesna oprema - Varnost - 4. del: Zaščitni
sistemi (ISO/DIS 13577-4:2021)

Industrial furnaces and associated processing equipment - Safety - Part 4: Protective

systems (ISO/DIS 13577-4:2021)

Fours industriels et équipements associés - Sécurité - Partie 4: Systèmes de protection

(ISO/DIS 13577-4:2021)
Ta slovenski standard je istoveten z: prEN ISO 13577-4
ICS:
25.180.01 Industrijske peči na splošno Industrial furnaces in general
oSIST prEN ISO 13577-4:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 13577-4:2021
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oSIST prEN ISO 13577-4:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 13577-4
ISO/TC 244 Secretariat: JISC
Voting begins on: Voting terminates on:
2021-07-06 2021-09-28
Industrial furnaces and associated processing
equipment — Safety —
Part 4:
Protective systems
Partie 4: Systèmes de protection
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 13577-4:2021(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 2021
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)
ISO/DIS 13577-4:2021(E)
Contents

Foreword ................................................................................................................................................................vi

Introduction ........................................................................................................................................................ vii

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

2 Normative references ................................................................................................................................. 1

3 Terms and definitions ................................................................................................................................ 2

4 Design requirements for equipment in a protective system ....................................................... 4

4.1 General ............................................................................................................................................................. 4

4.2 Requirements for protective systems .................................................................................................. 6

4.2.1 Overview of methods ............................................................................................................................ 6

4.2.2 Method A ................................................................................................................................................... 7

4.2.3 Method BC ................................................................................................................................................ 8

4.2.4 Method D ................................................................................................................................................ 10

4.3 Fault assessment for the wired section of protective systems ................................................. 11

4.4 Failure of utilities ...................................................................................................................................... 12

4.5 Reset .............................................................................................................................................................. 12

5 Information for Use .................................................................................................................................. 12

Annex A (informative) Explanation of techniques and measures for avoiding systematic

faults ........................................................................................................................................................ 13

A.1 General .......................................................................................................................................................... 13

A.2 Competency ................................................................................................................................................. 13

A.3 Avoidance of systematic faults ............................................................................................................. 13

Annex B (normative) Wiring of protective systems ............................................................................ 15

B.1 General .......................................................................................................................................................... 15

B.2 Protection against faults of the protective system ....................................................................... 15

B.3 Measures to avoid faults ......................................................................................................................... 16

B.4 Hardware design ....................................................................................................................................... 16

General requirements of the hardware ...................................................................................... 16

Wired section of the protective system ...................................................................................... 16

B.5 Proper input wiring ................................................................................................................................. 19

B.6 Proper output wiring ............................................................................................................................... 22

B.7 Improper input and output wiring ..................................................................................................... 25

COPYRIGHT PROTECTED DOCUMENT

Annex C (informative) Examples for the determination of safety integrity or performance

© ISO 2021

level SIL/PL using the risk graph method .................................................................................. 30

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 C.1 General .......................................................................................................................................................... 30

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

C.2 Examples for the determination of the required SIL/PL ............................................................ 31

below or ISO’s member body in the country of the requester.
ISO copyright office

Example 1 – Table C.1 ........................................................................................................................ 31

CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva

Example 2 – Table C.2 ........................................................................................................................ 31

Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Risk estimation and SIL assignment in accordance with IEC 62061:2021, Annex A
Email: copyright@iso.org

Website: www.iso.org (i.e. Table C.1) ...................................................................................................................................... 39

Published in Switzerland
ii © ISO 2021 – All rights reserved
© ISO #### – All rights reserved iii
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)
Contents

Foreword ................................................................................................................................................................vi

Introduction ........................................................................................................................................................ vii

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

2 Normative references ................................................................................................................................. 1

3 Terms and definitions ................................................................................................................................ 2

4 Design requirements for equipment in a protective system ....................................................... 4

4.1 General ............................................................................................................................................................. 4

4.2 Requirements for protective systems .................................................................................................. 6

4.2.1 Overview of methods ............................................................................................................................ 6

4.2.2 Method A ................................................................................................................................................... 7

4.2.3 Method BC ................................................................................................................................................ 8

4.2.4 Method D ................................................................................................................................................ 10

4.3 Fault assessment for the wired section of protective systems ................................................. 11

4.4 Failure of utilities ...................................................................................................................................... 12

4.5 Reset .............................................................................................................................................................. 12

5 Information for Use .................................................................................................................................. 12

Annex A (informative) Explanation of techniques and measures for avoiding systematic

faults ........................................................................................................................................................ 13

A.1 General .......................................................................................................................................................... 13

A.2 Competency ................................................................................................................................................. 13

A.3 Avoidance of systematic faults ............................................................................................................. 13

Annex B (normative) Wiring of protective systems ............................................................................ 15

B.1 General .......................................................................................................................................................... 15

B.2 Protection against faults of the protective system ....................................................................... 15

B.3 Measures to avoid faults ......................................................................................................................... 16

B.4 Hardware design ....................................................................................................................................... 16

General requirements of the hardware ...................................................................................... 16

Wired section of the protective system ...................................................................................... 16

B.5 Proper input wiring ................................................................................................................................. 19

B.6 Proper output wiring ............................................................................................................................... 22

B.7 Improper input and output wiring ..................................................................................................... 25

Annex C (informative) Examples for the determination of safety integrity or performance

level SIL/PL using the risk graph method .................................................................................. 30

C.1 General .......................................................................................................................................................... 30

C.2 Examples for the determination of the required SIL/PL ............................................................ 31

Example 1 – Table C.1 ........................................................................................................................ 31

Example 2 – Table C.2 ........................................................................................................................ 31

Risk estimation and SIL assignment in accordance with IEC 62061:2021, Annex A

(i.e. Table C.1) ...................................................................................................................................... 39

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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)

C.2.3.1 Hazard identification/indication ..................................................................................................39

C.2.3.2 Risk estimation ....................................................................................................................................39

C.2.3.3 Severity (Se) ..........................................................................................................................................39

C.2.3.4 Probability of occurrence of harm ................................................................................................40

C.2.3.4.1 Frequency and duration of exposure (Fr) .........................................................................40

C.2.3.4.2 Probability of occurrence of a hazardous event (Pr) .....................................................41

C.2.3.4.3 Probability of avoiding or limiting harm (Av) ..................................................................42

C.2.3.5 Class of probability of harm (Cl) ....................................................................................................42

C.2.3.6 SIL assignment .....................................................................................................................................43

User's guide for risk graph in accordance with IEC 61511-3:2016(i.e. Table C.2) ......43

C.2.4.1 Hazard identification/indication ..................................................................................................43

C.2.4.2 Risk estimation ....................................................................................................................................43

C.2.4.3 Consequence parameter selection ................................................................................................44

C.2.4.4 Occupancy parameter selection ....................................................................................................46

C.2.4.5 Avoidance parameter selection .....................................................................................................46

C.2.4.6 Demand rate parameter selection ................................................................................................47

C.2.4.7 Risk graph matrix SIL-assignment ................................................................................................47

Annex D (informative) Example of an extended risk assessment for one safety

instrumented function using the IEC 61511:2016 method..................................................48

D.1 General ..........................................................................................................................................................48

D.2 Concept description of equipment under control .........................................................................48

D.3 Hazard and risk assessment ..................................................................................................................48

Initiating events ...................................................................................................................................48

Hazard — Process deviation – insufficient combustion air .................................................49

D.4 Consequences .............................................................................................................................................49

D.5 Event tree example ...................................................................................................................................49

D.6 Protective system safety requirement specification ....................................................................50

General requirements .......................................................................................................................50

Safety sensor functional requirements .......................................................................................51

Logic solver requirements including alarming, external comparisons and HMI ........53

Final element requirements ............................................................................................................54

Manual intervention requirements ..............................................................................................55

Start-up requirements .......................................................................................................................55

Annex E (informative) Examples for protective functions ................................................................56

E.1 Introduction ................................................................................................................................................56

E.2 Examples of subfunctions .......................................................................................................................62

Overview of different requirements for input subfunctions ...............................................62

iv © ISO #### – All rights reserved
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)

Overview of different requirements for output subfunctions ........................................... 66

E.3 Examples of safety functions ................................................................................................................ 67

Annex F (informative) Terms and Definitions relevant to ISO 13577-4 listed in ISO

13574:2015 ........................................................................................................................................... 81

F.1 List of terms and definitions ................................................................................................................. 81

F.2 Excluded terms and definitions listed in ISO 13574:2015 ......................................................... 82

Annex G (normative) Requirements for application software ........................................................ 83

Bibliography ....................................................................................................................................................... 85

© ISO #### – All rights reserved v
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(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.

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 meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO's adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 244, Industrial furnaces and associated processing

equipment.

ISO 13577 consists of the following parts, under the general title Industrial furnaces and associated

processing equipment — Safety:
— Part 1: General requirements
— Part 2: Combustion and fuel handling systems
— Part 3: Generation and use of protective and reactive atmosphere gases
— Part 4: Protective systems
vi © ISO #### – All rights reserved
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)
Introduction

This part of ISO 13577 was developed to specify the requirements of a protective system, which is a

safety-related control system (SCS) of industrial furnaces and associated processing equipment (TPE). It

is intended that in designing the protective system of TPE, manufacturers of TPE choose from the three

methods provided in this part of ISO 13577. Mandatory safety-related control functions of TPE are

specified in the other parts of ISO 13577 (i.e. ISO 13577 1, ISO 13577 2, and ISO 13577 3).

This part of ISO 13577 is to be used as an essential part of the other parts of ISO 13577. Since the other

parts of ISO 13577 are type-C standards of ISO 12100, TPE are required to be designed in accordance

with the principles of ISO 12100. The type-B standards of ISO 12100 for SCS are IEC 62061 or ISO 13849

1, which always assume high-demand applications. However, there are cases in which a risk assessment

according to IEC 61511 (all parts), which provides the option of a low-demand rate on the protective

system, is more suitable for the design of a TPE protective system.

In principle, when requirements of the other parts of ISO 13577 (type-C standards) are different from

those which are stated in type-A or -B standards, the requirements of the type-C standards take

precedence over the requirements of the other standards for machines, which have been designed and

built according to the requirements of the type-C standards. Therefore, this part of ISO 13577 permits

extended risk assessment for SRECS in which risk assessment based on IEC 61511 (all parts) can be

chosen as an alternative.
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oSIST prEN ISO 13577-4:2021
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)
Industrial furnaces and associated processing equipment —
Safety — Part 4: Protective systems
1 Scope

This part of ISO 13577 specifies the requirements for protective systems used in industrial furnaces and

associated processing equipment (TPE).

The functional requirements to which the protective systems apply are specified in the other parts of

ISO 13577.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable to its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 13574:2015, Industrial furnaces and associated processing equipment — Vocabulary

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

principles for design

IEC 60947-4-1:2018, Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters

- Electromechanical contactors and motor-starters

IEC 60947-5-1:2016, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and

switching elements - Electromechanical control circuit devices

IEC 60204-1:2016, Safety of machinery — Electrical equipment of machines — Part 1: General

requirements

IEC 60730-2-5:2013+AMD1:2017+AMD2:2020 CSV, Automatic electrical controls for household and

similar use — Part 2-5: Particular requirements for automatic electrical burner control systems

IEC 61508-1:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 1: General requirements

IEC 61508-2:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems

IEC 61508-3:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 3: Software requirements

IEC 61508 -4:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 4: Definitions and abbreviations

IEC 61508-5:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 5: Examples of methods for the determination of safety integrity levels

The edition 4 of ISO 13849-1 is under development and is to be issued in 2022.
© ISO #### – All rights reserved 1
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oSIST prEN ISO 13577-4:2021
ISO/DIS 13577-4:2021(E)

IEC 61508-6:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3

IEC 61508-7:2010, Functional safety of electrical/electronic/programmable electronic safety-related

systems — Part 7: Overview of techniques and measures
IEC 61131-3:2013, Programmable controllers — Part 3: Programming languages

IEC 61511-1:2016, Functional safety — Safety instrumented systems for the process industry sector — Part

1: Framework, definitions, system, hardware and application programming requirements

IEC 61511-2:2016, Functional safety — Safety instrumented systems for the process industry sector — Part

2: Guidelines for the application of IEC 61511-1:2016

IEC 61511-3:2016, Functional safety — Safety instrumented systems for the process industry sector — Part

3: Guidance for the determination of the required safety integrity levels

IEC 62061:2021, Safety of machinery - Functional safety of safety-related control systems

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 13574:2015 and the following

apply. Annex F contains copies of definitions from ISO 13574 used in this document.

3.1
final element

part of a protective system, which implements the physical action necessary to achieve a safe state

NOTE Examples are valves, switch gear, motors including their auxiliary elements, for example, a solenoid valve

and actuator if involved in the safety function.

[SOURCE: IEC 61511-1:2003, 3.2.24 modified: "instrumented system" had been changed to read

"protective system" in the definition.]
3.2
flame detector device
device by which the presence of a flame is detected and signalled

NOTE It can consist of a flame sensor, an amplifier, and a relay for signal transmission.

[SOURCE: ISO 13574:2015, 2.65, modified: The second sentence in the original definition had been

presented as in the NOTE.]
3.3
logic function
function that performs the transformations between input information (
...

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prEN ISO 13577-2(Main)
Industrial furnaces and associated processing equipment — Safety — Part 2: Combustion and fuel handling systems
oSIST prEN ISO 13577-2:2021

This part of ISO 13577 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE The general safety requirements common to TPE are provided in ISO 13577-1 (See introduction) Annex°B of ISO 13577-1 also includes a list of processes for which industrial furnaces and heating systems covered by ISO 13577 may be used.
This part of ISO 13577 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex E, when used as intended and under the conditions foreseen by the manufacturer.
This part of ISO 13577 covers:
— fuel pipework downstream of and including the manual isolating valve;
— combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
— burner(s), burner system and ignition device;
— functional requirements for safety related control system.
This part of ISO 13577 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of ISO 13577 applies only to auxiliary burners designed to start-up and/or support the process.
The pressure hazard of the piping and components covered by this part of ISO 13577 is within the maximum pressure/size relationship of category I as described in normative Annex A.
This part of ISO 13577 also gives the necessary requirements regarding information for use.
This part of ISO 13577 does not cover hazards from heating generated by electricity.
This part of ISO 13577 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of ISO 13577 is not applicable to combustion and fuel handling systems:
— of gas welding and allied processes
— up-stream of the TPE manual isolating valve.
This part of ISO 13577 is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This part of ISO 13577 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to combustion and fuel handling systems manufactured before the date of its publication.

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

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

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CEN
prEN ISO 13577-2(Main)
Industrial furnaces and associated processing equipment — Safety — Part 2: Combustion and fuel handling systems
oSIST prEN ISO 13577-2:2021

This part of ISO 13577 specifies the safety requirements for combustion and fuel handling systems that are part of industrial furnaces and associated processing equipment (TPE).
NOTE The general safety requirements common to TPE are provided in ISO 13577-1 (See introduction) Annex°B of ISO 13577-1 also includes a list of processes for which industrial furnaces and heating systems covered by ISO 13577 may be used.
This part of ISO 13577 deals with significant hazards, hazardous situations and events relevant to combustion and fuel handling systems as listed in Annex E, when used as intended and under the conditions foreseen by the manufacturer.
This part of ISO 13577 covers:
— fuel pipework downstream of and including the manual isolating valve;
— combustion air supply (including oxygen and oxygen enriched combustion air) and flue gas system;
— burner(s), burner system and ignition device;
— functional requirements for safety related control system.
This part of ISO 13577 applies to any oxidation with air or other gases containing free oxygen of gaseous and liquid fuels or any combustion of them to release thermal energy in TPE.
For thermal or catalytic post combustion and waste incineration, this part of ISO 13577 applies only to auxiliary burners designed to start-up and/or support the process.
The pressure hazard of the piping and components covered by this part of ISO 13577 is within the maximum pressure/size relationship of category I as described in normative Annex A.
This part of ISO 13577 also gives the necessary requirements regarding information for use.
This part of ISO 13577 does not cover hazards from heating generated by electricity.
This part of ISO 13577 does not deal with the hazards created by the release of flammable substances from the products processed in the TPE.
This part of ISO 13577 is not applicable to combustion and fuel handling systems:
— of gas welding and allied processes
— up-stream of the TPE manual isolating valve.
This part of ISO 13577 is not applicable to blast furnaces, converters (in steel plants), boilers, fired heaters (including reformer furnaces) in the petrochemical and chemical industries.
This part of ISO 13577 is not applicable to electrical cabling and power cabling upstream of the TPE control panel/protective system.
This document is not applicable to combustion and fuel handling systems manufactured before the date of its publication.

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EN 10253-2:2021(Main)
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
SIST EN 10253-2:2021

This document specifies the technical delivery requirements for seamless and welded butt welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of carbon and alloy steel in two test categories which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases.
It specifies:
a)   type of fittings;
type A: Butt-welding fittings with reduced pressure factor;
type B: Butt-welding fittings for use at full service pressure;
b)   steel grades and their chemical compositions;
c)   mechanical properties;
d)   dimensions and tolerances;
e)   requirements for inspection and testing;
f)   inspection documents;
g)   marking;
h)   protection and packaging.
NOTE   The selection of the appropriate fitting (material, thickness) is the ultimate responsibility of the manufacturer of the pressure equipment (see European Legislation for Pressure Equipment). In the case of a harmonized supporting standard for materials, presumption of conformity to the ESRs is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently, it is essential that the technical data stated in the material standard be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the PED are satisfied.

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EN ISO 9902-6:2021(Main)
Textile machinery - Noise test code - Part 6: Fabric manufacturing machinery (ISO 9902-6:2018)
SIST EN ISO 9902-6:2021

This document covers the different types of weaving and knitting machines defined in ISO 5247 (all parts)[2] and ISO 7839[3], respectively.
It is applicable to:
       full-width weaving machines with weft insertion by:
       shuttles;
       rigid, telescopic or flexible rapiers;
       projectiles;
       hydraulic (waterjet) or by pneumatic (airjet) nozzle;
       narrow fabric weaving machines with weft insertion by shuttles or needles;
       jacquard machines;
       knitting machinery including:
       circular knitting;
       flat bed knitting;
       warp knitting;
       raschel;
       cotton (flat weft weaving);
       other fabric manufacturing machines e.g.:
       multi-phase weaving machines;
       circular weaving machines;
       stitch bonding machines.
NOTE       Because of the high requirements on measurement conditions, grade 1 methods are normally not feasible for textile machinery.

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EN 15746-2:2020(Main)
Railway applications - Track - Road-rail machines and associated equipment - Part 2: General safety requirements
SIST EN 15746-2:2021

This document specifies the significant hazards, hazardous situations and events, common to self-propelled road-rail machines - henceforward referred to as machines - and associated equipment, arising due to the adaptation for their use on railway networks and urban rail networks. These machines are intended for construction, maintenance and inspection of the railway infrastructure, shunting and emergency rescue vehicles, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer; see Clause 4.
This document deals with the common hazards during assembly and installation, commissioning, travelling on and off track, use including setting, programming, and process changeover, operation, cleaning, fault finding, maintenance and de-commissioning of the machines.
NOTE   Specific measures for exceptional circumstances are not dealt with in this document. They can be subject to negotiation between manufacturer and the machine operator.
The common hazards dealt with include the general hazards presented by the machines, also the hazards presented by the following specific machine functions:
a)   excavation;
b)   ballast tamping, ballast cleaning, ballast regulating, ballast consolidating;
c)   track construction, renewal, maintenance and repair;
d)   lifting;
e)   overhead contact line system renewal / maintenance;
f)   maintenance of the components of the infrastructure;
g)   inspection and measurement of the components of the infrastructure;
h)   working in tunnels;
i)   shunting;
j)   vegetation control;
k)   emergency rescue and recovery;
during commissioning, use, maintenance and servicing.
For a road-rail machine it is assumed that an EU road permissible host vehicle will offer an accepted safety level for its designed basic functions before conversion. Unless explicitly stated otherwise in a particular clause this specific aspect is not dealt with in this document.
This document does not deal with:
1)   requirements with regard to the quality of work and the performance of the machine;
2)   machines that utilize the contact line system for traction purposes;
3)   specific requirements established by a railway Infrastructure Manager or Urban Rail Manager;
4)   negotiations between the manufacturer and the machine operator for additional or alternative requirements;
5)   requirements for use and travel of the machine on public highway;
6)   hazards due to air pressure caused by the passing of high-speed trains at more than 190 km/h;
7)   requirements which could be necessary in case of use in extreme conditions, such as extreme ambient temperatures (tropical or polar); see 5.30;
8)   highly corrosive or contaminating environment, e.g. due to the presence of chemicals;
9)   potentially explosive atmospheres.
Other special machines used on railway tracks are dealt with in other European Standards, see Annex E.

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EN 352-10:2020(Main)
Hearing protectors - Safety requirements - Part 10: Entertainment audio earplugs
SIST EN 352-10:2021

This European Standard is applicable to entertainment audio earplugs. It specifies requirements on construction, design, performance, marking and user information relating to the inclusion of the entertainment audio facility.

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EN 352-8:2020(Main)
Hearing protectors - Safety requirements - Part 8: Entertainment audio earmuffs
SIST EN 352-8:2021

This European Standard is applicable to entertainment audio ear-muffs. It specifies requirements on construction, design, performance, marking and user information relating to the inclusion of the entertainment audio facility.

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EN 12999:2020(Main)
Cranes - Loader cranes
SIST EN 12999:2020

This document specifies minimum requirements for design, calculation, examinations and tests of hydraulic powered loader cranes and their mountings on vehicles or static foundations.
This document applies to loader cranes designed to be installed on:
-   road vehicles, including trailers, with load carrying capability;
-   tractors (road or agricultural), where only a towed trailer has capability to carry goods;
-   demountable bodies to be carried by any of the above;
-   other types of carriers (e.g. separate loaders, crawlers, rail vehicles, non-seagoing vessels);
-   static foundations.
This document also applies to loader cranes equipped with special tools or interchangeable equipment (e.g. grapple, clamshell bucket, pallet clamp, etc.), as specified in the operator’s manual.
This document does not apply to loader cranes used on board sea going vessels or to articulated boom system cranes which are designed as total integral parts of special equipment such as forwarders.
The hazards covered by this document are identified in Clause 4.
This document does not cover hazards related to the lifting of persons.
NOTE   The use of cranes for lifting of persons can be subject to specific national regulations.
This document is not applicable to loader cranes manufactured before the publication of this document. For loader cranes designed before the publication of this document, the provisions concerning stress calculations in the version of EN 12999 that was valid at the time of their design, are still applicable.

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