1 - AS 1674.2-2003 SAFETY IN WELDING AND ALLIED PROCESSES - ELECTRICAL
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
7 - 1.3 DEFINITIONS
7 - 1.3.1 Allied process
7 - 1.3.2 Authorized
7 - 1.3.3 Conductor
8 - 1.3.4 Control lead
8 - 1.3.5 Distribution box
8 - 1.3.6 Environment
8 - 1.3.7 FCAW
8 - 1.3.8 GMAW
8 - 1.3.9 GTAW
8 - 1.3.10 Hazard-reducing device
9 - 1.3.11 Licensed electrical worker
9 - 1.3.12 Mains installation (electrical)
9 - 1.3.13 MMAW
9 - 1.3.14 Open-circuit voltage (OCV) or no-load voltage
9 - 1.3.15 Output lead (or cable)
9 - 1.3.16 Power source (also known as welding machine)
9 - 1.3.17 SAW
9 - 1.3.18 Shall
9 - 1.3.19 Should
9 - 1.3.20 Terminal
9 - 1.3.21 Voltage-reducing device (VRD)
9 - 1.3.22 Welder
10 - 1.3.23 Welding
10 - 1.3.24 Welding circuit (also known as output circuit)
10 - 1.3.25 Welding current
11 - SECTION 2 RISK ASSESSMENT AND PERSONAL SAFETY
11 - 2.1 GENERAL
11 - 2.2 CLASSIFICATION OF WELDING ENVIRONMENT
11 - 2.3 CONTROL MEASURES
11 - 2.3.1 Category A environments
12 - 2.3.2 Category B environments
13 - 2.3.3 Category C environments
13 - 2.4 PARTICULAR HAZARDS WITH PLASMA-ARC PROCESSES
14 - SECTION 3 EQUIPMENT
14 - 3.1 HELMETS, HANDSHIELDS, GOGGLES, FACE MASKS AND GLOVES
14 - 3.2 POWER SOURCES
14 - 3.2.1 General
14 - 3.2.2 Degree of protection
15 - 3.2.3 Terminals
15 - 3.2.4 Internal insulation
15 - 3.2.5 Control
16 - 3.2.6 Maximum open-circuit voltage
16 - 3.2.7 Hazard-reducing devices
17 - 3.2.8 Ancillary devices
18 - 3.3 ANCILLARIES
18 - 3.3.1 Electrode holders for MMAW
18 - 3.3.2 Plasma torches
18 - 3.3.3 Wire feeders
19 - SECTION 4 ELECTRICAL CONNECTIONS
19 - 4.1 CONNECTION TO ELECTRICITY SUPPLY
19 - 4.2 WELDING CIRCUIT CONNECTIONS
19 - 4.2.1 General
19 - 4.2.2 Welding leads
19 - 4.2.3 Voltage drop
20 - 4.2.4 Electrode leads for MMAW
20 - 4.2.5 Permanently installed welding circuit wiring
20 - 4.2.6 Work lead and work conductor
20 - 4.2.7 Welding circuit connections
20 - 4.2.8 Confined spaces
21 - 4.3 EARTHING
21 - 4.4 CONNECTING MULTIPLE POWER SOURCES TO A COMMON WORKPIECE
21 - 4.4.1 General
21 - 4.4.2 Installation of single-phase power sources to two-wire a.c. supply circuits
22 - 4.4.3 d.c. welding circuits
23 - 4.4.4 Installations on three-phase supply circuits
26 - SECTION 5 INSPECTION AND MAINTENANCE
26 - 5.1 POWER SOURCE
26 - 5.1.1 Routine inspection and testing
26 - 5.1.2 Insulation resistance
26 - 5.1.3 Earthing
26 - 5.1.4 Repairs
26 - 5.2 ACCESSORIES
27 - APPENDIX A - TYPICAL ELECTRICAL HAZARDS
27 - A1 SCOPE
27 - A2 COURSES OF INSTRUCTION
27 - A3 GENERAL
28 - A4 POWER SOURCES
28 - A4.1 General
28 - A4.2 Open circuit voltage
28 - A4.3 Plasma welding and cutting
28 - A5 SECONDARY CIRCUITS
28 - A5.1 General
29 - A5.2 The magnitude of current flowing through a body
31 - A5.3 The path of current through a body
31 - A5.4 The duration of shock
31 - A5.5 The type of voltage supply
31 - A5.6 The reaction to shock
31 - A6 STRAY CURRENT
32 - A7 ELECTROMAGNETIC FIELDS AND PACEMAKERS
32 - A7.1 General
32 - A7.2 Minimizing exposure
32 - A7.3 Welders with pacemakers
34 - APPENDIX B - FATAL ELECTRICAL ACCIDENTS
34 - B1 INTRODUCTION
34 - B2 BOILER WELDING
36 - B3 WORKING ON BOARD A SHIP
37 - B4 WELDING OUTDOORS
38 - B5 PULLING A CABLE
38 - B6 FATAL ELECTRICAL ACCIDENT INVOLVING MAINS VOLTAGE