CONTENTS
1 HAZARDS OF ELECTRICITY
1.1 Dangers of electrical current
General
The danger of electrical current
The effects of electric current on humans
Electric shock first aid
The physiological effects of electric current
1.2 Protection against electric shock
Basic protection
Fault protection
Additional protection with fault current protection
1.3 Arc hazards
1.4 The effects of electric and magnetic fields
1.5 Causes of electrical injuries
Test your knowledge of the dangers of electricity
2 LAWS, REGULATIONS, AND POSITION OF SFS 6002 STANDARD
2.1 Requirements of the acts
2.2 The position of the electrical safety standard SFS 6002
2.3 Deviation from the standard
Test your knowledge of the laws, acts, and the position of the standards
3 SAFE OPERATION
3.1 Basis for safe operation
3.2 Instructing
3.3 Training in safety at electrical work
3.4 Emergency measures
3.5 First aid training
3.6 Communication during work and flow of information
3.7 Work area
3.8 Tools, accessories, and equipment
3.9 Personal protection
3.10 Drawings, documents, and signs
Examples of signs
Test your knowledge of safe operation
4 PERSONS PERFORMING ELECTRICAL WORK AND THE
ORGANISATION
4.1 Persons performing electrical work
Ordinary person
Instructed person
Electrically skilled professional
Single works on equipment
4.2 Organisation
Areas of responsibility of the organisation
Person in charge of electrical work
Supervisor of electrical safety during working activities
How is the supervisor nominated?
When shall a supervisor be nominated?
The holder of the electrical installation
Person in charge of the operation
Test your knowledge of the persons of electrical work and organisation
5 MEASURES IN CONNECTION WITH OPERATION
5.1 What are operational measures?
Permissible operational measures for different persons
Ordinary person
Instructed person
Electrical professional
5.2 Operational inspections
Measurement
Categories of measurement equipment
Testing
Testing with an external voltage
Inspection
Test your knowledge of operating and the amendments of operations
6 WORKING PRACTICES
6.1 General
Specific risk factors related to the work
Work procedures
6.2 Dead working
Basis
Five safety rules
1 Complete disconnection
2 Blocking of the connection of voltage
3 Verification of absence of voltage of the installation
4 Work earthing
5 Protection against live parts in the vicinity
Permission to start work
Re-energizing of the work location
Test your knowledge of dead working
6.3 Live working
What is live working?
Definition of live working zones
Who is allowed to perform live working?
Breakdown of live works
Organizing live working
Tools and personal protection equipment used in live working
Live working in short
Test your knowledge of live working
6.4 Working in the vicinity of live parts
Division of vicinity works
Definition of the vicinity zone
Working in the vicinity of overhead lines
Transportations in the vicinity of overhead lines
Other works in electrical rooms in the vicinity of live parts
Instructing a person performing other work
Tools
Test your knowledge of vicinity working
7 MAINTENANCE PRACTICES
7.1 General
7.2 Personnel
7.3 Repair works
7.4 Replacement works
Replacement work of fuses
Permissible fuse replacement works
A sufficiently familiarized or instructed ordinary person
Instructed person
Electrically skilled professional
Replacement of lamps and starters
7.5 Interruption and finishing of maintenance work
Test your knowledge of maintenance practices
8 WORKS CONCERNING ELECTRICAL VEHICLES
8.1 General
8.2 Signs and instructions
8.3 Training of the personnel
Test your knowledge in works related to electrical vehicles
APPENDIX 1: Division of tasks of the person in charge of work performance
APPENDIX 2: Division of tasks of the person in charge of the operation of the electrical installation
The correct answers to the test your knowledge -questions