Practical Electrical Safety Techniques for Industry

THE WORKSHOP

A number of serious accidents and fatalities occur every year in the industry due to accidents involving electricity, taking a huge financial and human toll. The dangers and risks from electrocution, shock, explosions and arc blast can never be eliminated but you can take definite steps to protect yourself and your co-workers.

Safety should be built into the design of electrical equipment and followed up with proper installation, operation, maintenance and periodic inspection. Electrical safety is not just a technical issue. Accidents can only be prevented if appropriate safety procedures are developed and enforced. This includes complete familiarity with equipment and systems often imparted through structured training to each and every person who operates or maintains the equipment. In this workshop, we will take a look at the theoretical aspects of safety as well as the practical issues including the statutory and safety-training related aspects. This know how will certainly enable participants to deploy appropriate safety procedures in their workplace and improve their safety record.

WHAT IS INCLUDED?

  • Receive a certificate of attendance in support of your continuing professional commitment
  • All workshops include the associated hardcopy technical manual
  • Printed workshop handouts
  • Lunch and refreshments
  • Interact and network with workshop attendees and experienced instructors
  • Practical, industry driven content to assist you in your continuing professional development (CPD)
  • Attendees automatically become IDC subscribers and receive exclusive deals and technical content every month

WHO SHOULD ATTEND?

  • Building service designers
  • Consulting engineers
  • Data systems planners and managers
  • Electrical engineers
  • Electrical, mechanical and instrumentation technicians
  • Instrumentation and control engineers
  • Maintenance technicians and engineers
  • Mechanical engineers
  • Power system protection and control engineers
  • Project engineers

Any staff working within an industrial environment will benefit from this training, all staff that may enter, pass by or have any direct or indirect contact with electrical infrastructure should attend.

CONTENT SUMMARY

PRINCIPLES OF SAFETY RULES

  • Electrical hazards
  • Requirements for safety
  • Operative training
  • Personnel levels of competency
  • Safety documentation
  • Work on live systems, close to live systems

ELECTRICAL SHOCK AND METHODS OF SHOCK PREVENTION

  • Shock – direct and indirect contact
  • Touch and step potential
  • Effects of shock on the human body
  • The deadly combination of heights and electric shock
  • Locations of increased shock risk
  • Principles of shock protection
  • First-aid for burns and electric shock 
  • Earth leakage circuit breakers
  • Role of electrical insulation in safety

HAZARDS DUE TO ELECTRICAL ARCING AND HEATING

  • Arc flash definition
  • Arc blast
  • Hazards due to arcing/flashover
  • Effects of arc flash on humans
  • Physiological effects
  • Tissue damage
  • Internal organ damage
  • Burns
  • Fibrillation
  • Curable 2nd degree burn
  • Arc blast pressure, sound pressure
  • Reducing arc-flash hazards
  • Minimise risk with good safety practical
  • Consideration for new equipment
  • Reduce the available fault current
  • Increasing worker distance
  • Faster tripping time
  • Hazards from use of electrical equipment in explosive environment
  • Hazards due to high temperature in electrical equipment

STATIC ELECTRICITY AND PROTECTION

  • What is static electricity? 
  • Generation of charge       
  • Common examples of static build-up      
  • Energy of spark and its ignition capability          
  • Dangers of static electricity build-up       
  • Control of static electricity          
  • Static electricity danger in un-energised overhead lines
  • Assessment of static risks and planning prevention

SAFETY ASPECTS IN ELECTRICAL EQUIPMENT DESIGN AND SELECTION

  • Design of equipment for ensuring safety
  • Equipment ratings and fault withstand capability
  • Containing and deflecting arcs during equipment faults
  • Role of equipment enclosures in ensuring safety-discussion on motor terminal boxes as an example
  • Degree of protection and its significance in safety
  • Damage due to overload or excessive fault current in electrical conductors
  • Types of insulation and their temperature limits
  • Protecting electrical systems by over current protective devices (relays, releases, fuses, circuit breakers)
  • Detection of hot spots by infrared sensors or viewing devices
  • Equipment selection – its contribution to safe operations
  • n-built earthing devices and interlocks
  • Special requirements to be observed in restrictive conductive locations (IEE Wiring Regulations)

SAFE OPERATION AND MAINTENANCE OF ELECTRICAL EQUIPMENT

  • Key safety issues in O&M of electrical installations
  • Policies of operational and safety locking, safety notices and remote operation
  • Use of warning signs for operation and maintenance
  • Personnel protective equipment
  • Work on underground cable systems
  • Use and upkeep of safety appliances in substations and other electrical premises
  • Gas safety and ventilation
  • Switching schedules
  • Electrical testing procedures
  • Need for periodic inspection and maintenance for safe operation of electrical equipment

EARTHING AND BONDING

  • Objectives of earthing
  • Earthing of power supply systems and its safety implications
  • Role of earthing of equipment enclosures (protective earthing) in human safety
  • Neutral earthing of electrical supply systems
  • Thermal capability
  • Use of protective metallic conduits for earthing conductors
  • Objectives of bonding
  • Equipotential bondingSUBSTATION SAFETY
  • Safety while working in outdoor switchyards and overhead lines
  • Special precautions when working on switch gear
  • Substation check list
  • Fire protection in substations

SAFETY IN BATTERY INSTALLATIONS

  • Hazards involved in lead-acid battery installations
  • Premises used for housing lead acid batteries
  • Transportation and storage
  • Installation and commissioning
  • Charging and storage
  • Dismantling and disposal
  • Protective clothing

REGULATIONS GOVERNING WORKPLACE SAFETY (COUNTRY-SPECIFIC)

  • Evolution of safety-related legislation
  • Safety at work act
  • Electricity at work regulations
  • Electricity supply regulations
  • Electricity usage regulations 
  • Special regulations for hazardous areas (ATEX or other applicable rules)
  • Codes of practice (non-mandatory guidelines)

ORGANISATIONAL REQUIREMENTS OF SAFETY

  • Statutory requirements for working in electrical installations
  • Competency and authorisation
  • Responsibility of employer and employee in regard to electrical safety at work
  • Safety organisation within the company
  • Accident reporting, investigation, analysis and prevention
  • Safety awareness promotion among workforce and importance of appropriate training

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