Standard
UPDATE AVAILABLE
AS 5804.1-2010
[Superseded]Specifies general requirements for work performed on live high-voltage electrical apparatus where live work methods are used. It is intended to for use with AS 5804.2, AS 5804.3 and AS 5804.4, which specify particular requirements for glove and barrier work, stick work and barehand work.
Published: 09/08/2010
Pages: 71
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Objectives
1.3 Principles and application
1.4 Referenced and related documents
1.5 Live work methods
1.5.1 General
1.5.2 Glove and barrier method
1.5.3 Stick work method
1.5.4 Barehand method
1.6 Definitions
1.7 Responsibilities
1.7.1 General
1.7.2 Responsibilities of the network operator or service provider
1.7.3 Responsibilities of the person in charge of work on-site
1.7.4 Safety observers
1.7.5 Team members
2 Risk assessment
2.1 General
2.2 Pre-job hazard and risk assessment
2.3 Known hazards
3 Live work personnel
3.1 Selection criteria
3.2 Medical assessment
3.2.1 General
3.2.2 Initial medical assessment
3.2.3 Ongoing regular medical assessment
3.3 Workplace health issues
3.4 Initial training and competency assessment
3.4.1 Training and assessment
3.4.2 Competency assessment
3.4.3 Refresher training
3.5 Persons working in association with live work crews
4 Work documentation
4.1 General
4.2 Work procedures and techniques
4.3 Documentation
4.3.1 General
4.3.2 Live work manual
4.3.3 Live work permit
4.3.4 Approved work documentation
4.3.5 Minor changes to work procedure on-site
4.4 Records
5 Safe working principles
5.1 General
5.2 Work on adjacent structures and spans
5.3 Combination live work and access authority work
5.4 Integrity of insulation
5.5 Inspection of insulators
5.6 Restraint of free ends of harness straps, pole straps and ropes
5.7 Worksite electrical apparatus
5.8 Safety observers
5.8.1 Safety observer
5.8.2 Team members
5.9 Work team communications
5.9.1 Communication with the system controller
5.9.2 Communication between work team members
5.10 Weather conditions
5.11 Traffic management
5.12 Step and touch potential
5.13 Protective devices
5.13.1 Operation of protective devices
5.13.2 Disabling of auto-reclose function
5.13.3 A manual reclose or other planned switching of a circuit
5.14 Plant earthing
5.15 Public safety
5.16 Personal protection
5.16.1 Wearing of metallic objects
5.16.2 Hair length
5.16.3 Personal protective equipment
5.17 Procedures in the event of an incident/accident
5.17.1 Events constituting an incident or accident
5.17.2 Procedures for responding to live work incidents/accidents
5.18 Post-job assessment
5.19 Safe working principles for substations
6 Insulation and voltage
6.1 General
6.2 Insulating materials
6.3 High-voltage insulators
6.3.1 General
6.3.2 Treatment of insulators exhibiting physical damage or signs of electrical distress
6.3.3 Minimum number of electrically sound disc insulators
6.3.4 Testing of insulator strings
6.3.4.1 Minimum approach distance
6.3.4.2 Voltage profile across the string
6.3.5 Live work where the minimum number of electrically sound discs is not available
6.4 Porcelain disc insulators
6.5 Glass disc insulators
6.6 Non-ceramic insulators (NCIs)
6.6.1 General
6.6.2 Installation of new insulators
6.6.3 Handling of NCIs
6.6.4 Assessment of non-ceramic insulators (NCIs)
6.7 Potential abnormal voltage conditions
6.7.1 General
6.7.2 Ferro-resonance
6.7.3 Ferranti effect
6.7.4 Backflash
7 Current and conductors
7.1 General
7.2 Elevated conductor temperature
7.3 Current and switching
7.4 Conductors and controlled movement
8 Electromagnetic fields
8.1 General
8.2 Electric fields (E)
8.3 Magnetic fields (B)
8.4 Electromagnetic field management
9 Minimum approach distance
9.1 General
9.2 Insulation based on air
9.3 Minimum Approach Distance (MAD) calculation—Air
9.3.1 General
9.3.2 Electrical factor
9.3.3 Ergonomic distance
9.4 Recommended minimum approach distances
9.5 Conditions applicable to Tables 9.1, 9.2, 9.3 and 9.4
9.6 Decreasing the minimum approach distance
9.7 Increasing the minimum approach distance
9.7.1 Ergonomic distance
9.7.2 Personal factors
9.7.3 Environmental factors
9.8 MADs for mobile plant and loads operated by instructed or authorized persons with a safety observer
9.8.1 General
9.8.2 Factors to consider when varying distances
9.8.2.1 General
9.8.2.2 Increasing the MAD
9.8.2.3 Decreasing the MAD
9.8.2.4 Mobile plant and load considerations
9.8.2.5 Ergonomic distance for plant and loads
9.8.2.6 Persons working in association with live work crews
10 Equipment
10.1 General
10.2 Electrical rating of insulating equipment
10.3 Contamination
10.4 Insulation maintenance
10.5 Electrical properties of tools and equipment
10.5.1 Categories of insulating materials
10.5.2 Current associated with personal protective or cover-up tools and equipment
10.5.3 Current associated with support, lift, or reach-extending tools and equipment
10.5.4 Maximum permissible current
10.6 Live work sticks
10.7 Gloves and sleeves
10.8 Insulating barriers
10.8.1 General
10.8.2 Types of insulating barriers
10.9 Conductor support equipment
10.10 Rope
10.10.1 Properties of rope for live work
10.10.2 Types of rope in use
10.11 Elevating work platforms (EWPs)
10.11.1 Use of EWPs
10.11.1.1 EWP insulation—Stick work
10.11.1.2 EWP insulation—Glove and barrier
10.11.1.3 EWP insulation—Barehand
10.11.2 Supporting energized components
10.11.3 Uninsulated parts of the EWP
10.11.4 Earthing and bonding of the chassis of the EWP
10.11.5 EWPs for live high-voltage work
10.12 Crane operations
10.12.1 General
10.12.2 Instruction of crane operators
10.12.3 Supervision of crane operators
10.12.4 Supporting energized components
10.12.5 Uninsulated parts of the crane
10.12.6 Earthing and bonding of the chassis of the crane
10.12.7 Operation of multiple plant items on the same site
10.13 Insulating positioning towers (IPT)
10.14 Personal protective equipment (PPE)
10.14.1 General principles
10.14.2 Safety footwear
10.14.3 Eye and face protection
10.14.4 Head protection
10.14.5 Protective clothing
10.14.6 Additional protective clothing
10.14.7 Specific live work equipment
11 Care and maintenance of equipment
11.1 General
11.2 Live work equipment management
11.2.1 General
11.2.2 Leaving of live insulating equipment on energized electrical apparatus
11.3 Inspection
11.3.1 General
11.3.2 Periodicity of inspections
11.4 Cleaning
11.5 Storage and transport
11.6 Care and maintenance of live work sticks
11.7 Care and maintenance of gloves and sleeves
11.8 Care and maintenance of barriers
11.9 Care and maintenance of conductor support equipment
11.10 Rope for live work
11.10.1 Insulating rope
11.10.1.1 General
11.10.1.2 Use and marking of insulating rope
11.10.1.3 Minimum length of insulating rope
11.10.1.4 Management of insulating rope
11.10.1.5 Testing
11.10.2 Storage and handling
11.10.3 Live work rope
11.10.3.1 General
11.10.3.2 Testing
11.10.3.3 Storage and handling
11.11 Care and maintenance of EWPs
11.11.1 General
11.11.2 Electrical
11.11.3 Mechanical
11.12 Care and maintenance of cranes and crane insulation
11.13 Care and maintenance of PPE
11.14 Testing
11.14.1 Electrical testing
11.14.1.1 General
11.14.2 Field testing
11.14.2.1 General
11.14.2.2 Testing disc insulators
11.14.2.3 Earth leakage testing
11.14.2.4 Live work stick and rope testing
11.14.3 Equipment, testing intervals and testing Standards
11.14.4 Periodic testing
11.14.5 Mechanical testing
11.14.6 Identification and marking of safe working load
12 Auditing
12.1 General
12.2 Basic principles
12.3 Setting audit frequencies and scope
12.3.1 Audit frequencies
12.4 Selecting suitable live work auditors
12.4.1 General
12.4.2 Selection requirements
12.5 The audit process
12.6 Management of non-compliances
12.7 Reporting of audit results
13 Use of helicopters
13.1 Scope and general
13.2 High-voltage live work principles
13.3 Guideline information
Appendix A
A1 Altitude correction factor
Appendix B
B1 Referenced documents
B2 Related documents
B3 Standards bodies
Appendix C
Appendix D
D1 Full audit
D2 Partial audit
D3 Brief audit
D4 Non-compliance resolution sheet (example)
Appendix E
E1 Sample derivation of MADs
E1.1 IEEE 516 formula constants
E1.1.1 Electrical
E1.1.2 Constants
E2 Calculations
E2.1 IEEE 516 air insulation distance; IEEE 516 air insulation ϕ-g
E2.2 Phase-to-phase minimum air distance from IEEE 516—1995 Page 15
E3 Results summary
Cited references in this standard