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BS EN IEC 60974-9:2018

BS EN IEC 60974-9:2018

$167.15

Arc welding equipment – Installation and use

Published By Publication Date Number of Pages
BSI 2018 36
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This document is applicable to requirements for installation and instructions for use of equipment for arc welding and allied processes designed in accordance with safety requirements of IEC 60974-1, IEC 60974-6 or equivalent.

This document is applicable for the guidance of instructors, operators, welders, managers, and supervisors in the safe installation and use of equipment for arc welding and allied processes and the safe performance of welding and cutting operations.

National and local regulations take precedence over this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
13 4 Installation
4.1 General
4.2 Supply circuit
4.2.1 Selection of supply cables
4.2.2 Supply disconnecting device
14 4.2.3 Emergency stopping device
4.3 Welding circuit
4.3.1 Isolation from the input supply
4.3.2 Summation of no-load voltages
4.3.3 Welding cables
15 4.3.4 Connection between the welding power source and the workpiece
Tables
Table 1 – Current ratings for copper welding cables
16 4.3.5 Earthing of the workpiece
4.3.6 Location of gas cylinders
17 5 Electromagnetic compatibility (EMC)
5.1 General
5.2 Assessment of area
5.3 Methods of reducing emissions
5.3.1 Public supply system
5.3.2 Maintenance of arc-welding equipment
18 5.3.3 Welding cables
5.3.4 Equipotential bonding
5.3.5 Earthing of the workpiece
5.3.6 Screening and shielding
6 Electromagnetic fields (EMF)
6.1 General
19 6.2 Assessment of exposure
7 Use
7.1 General requirements
7.2 Connection between several welding power sources
7.3 Inspection and maintenance of the welding installation
7.3.1 Periodical inspection
20 7.3.2 Routine inspection
7.4 Disconnection of welding power sources and/or welding circuits
7.5 Guards
7.6 Information for operators
7.7 Protective measures
7.7.1 Extraneous conductive parts in the welding area
7.7.2 Protection against electric shock
21 7.8 Isolation of the welding circuit from the workpiece and earth when not in use
7.9 Voltage between electrode holders or torches
22 Figures
Figure 1 – Example of DC voltage between electrode holders or torches
Figure 2 – Example of AC voltage between electrode holders or torches –Single-phase supply from the same pair of lines of a three-phase mains supply
Figure 3 – Example of AC voltage between electrode holders or torches –Single-phase supply from different pairs of lines of a three-phase mains supply
23 7.10 Welding in an environment with increased risk of electric shock
7.11 Use of shoulder slings
Figure 4 – Example of AC voltage between electrode holders connected between different lines of output
24 7.12 Welding at elevated positions
7.13 Welding with suspended welding equipment
8 Battery-powered welding power sources
8.1 Safety recommendations
8.2 Transportation
25 Annex A (informative) Hazards associated with arc welding
A.1 General
A.2 Equipment condition and maintenance
A.3 Operation
A.4 Training
A.5 Arc radiation
A.5.1 General
26 A.5.2 Eye and face protection (see also A.9)
A.5.3 Body protection (see also A.9)
A.5.4 Protection of persons in the vicinity of an arc
A.6 EMF
A.6.1 General
A.6.2 Body protection
A.6.3 Protection of persons in the vicinity of the welding operation
A.7 Welding fume
27 A.8 Noise
28 Figure A.1 – Steps for the control of welding fumes
29 A.9 Fire and explosion
A.9.1 General
A.9.2 Fire
A.9.3 Explosion
A.10 General protective clothing
A.11 Confined spaces
30 Figure A.2 – Example steps of operation for work in confined spaces
31 Annex B (informative) Voltage drops in the welding circuit
Figure B.1 – Example of MIG/MAG equipment
32 Table B.1 – Voltage drop in copper and aluminium welding cables at normal and elevated temperatures
33 Bibliography

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BS EN IEC 60974-9:2018
$167.15