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ICTD International Centre for Training and Development

ARC Flash Hazard Analysis: Impact, Control & Safety

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About the course

Arc flash hazards should be looked upon seriously and with adequate safety measures, training and knowledge. Technology is also instrumental in preventing arc flash hazards. Electrical accident preventions are always in placed but accidents still take a toll on the persons working on the premises. Electricity is a familiar and necessary part of everyday life, but electricity can kill or severely injure people and cause damage to property.

There are simple precautions and personal protective equipment to be used when working with switchgears that can be taken to significantly reduce the risk of arc flashes. Arc flashes are to be contained and precautions are to be in placed against arc flashes accidents. Proper and correct personal protective equipments are mandatory as it can save lives and prevent severe injuries.

This course will provide an understanding of HV electrical safety:

  • Causes of arc flash
  • Types of faults and its effect
  • Safety environment
  • Arc flash accidents
  • Personal protective equipments
  • Labeling
  • Technology in reducing arc flashes

Course Objectives

This course aim is to provide understanding the risks of arc flash in medium and high voltage installations. It will enable you to understand the principles of safety precautions and accident prevention and injuries. To have a better understanding or arc flash accidents and safety aspects. Emphasis on the importance of grounding. Root cause analysis in high voltage safety. Role of safety committees and hazardous areas classifications.

Delegates will gain a detailed appreciation of the following:

  • The importance of arc flash accident prevention in medium and high voltage electrical installation
  • The necessity of working safely
  • The dangers and hazards of high voltage electrical faults
  • How to avoid accidents at your workplace

Organizational Impact

The seminar provides an ideal way to cater for technical training of personnel. The benefits for the organization can be summarized as follows:

  • Technical training and up-skilling to improve and realize the full potential of a competent workforce
  • Productivity increase through minimization of project time acceptance/design and commissioning
  • Identification for opportunities of improvements due to deep understanding of the presented state-of-the-art technologies
  • Networking of personnel with technology leaders and other engineers and technicians with strong field experience
  • Exposure of personnel to the standard international procedures
  • Attitude change of workforce, as continuous follow up of new technologies and their up taking could otherwise create workforce with high resistance to change due to lack of understanding.

Personal Impact

On successful completion of this seminar delegates will be able to:

  • Refresh your knowledge of the importance of safety in high voltage installations
  • Understand the hazards of electricity
  • Identify the dangers and risks of accidents in a high voltage installation
  • Appreciate the principles of safety cultures
  • Be careful and aware of arc flash accidents
  • Recognize the effort of safety committees and their recommendations

Course Outline

DAY ONE

What are arc flash hazards and their relevance to IEC, OSHA and NPFA STANDARDS?

  • Overview and definition of arc flash hazards
  • International standard requirements against arc flashes
  • Implementation of lock out tag out and its significance
  • Arc flash and other electrical safety hazards
  • IEC Standard Time/Current Zones effects of AC currents on persons
  • Electrically safe working environment
  • Electric shock hazards
  • Implementation of electrical safety programs

DAY TWO

The impact of arc flash accidents. How can such incidents be avoided and controlled?

  • Factors determining the severity of arc flashes and arc blasts
  • Arc flash incidents
  • Arc flash safety solutions
  • How to avoid arc flash accidents?
  • How over current protective devices can reduce arc flash hazards
  • Current limiting fuses and fast acting circuit breakers
  • Types of grounding systems and arc faults
  • ARMS – Arcflash Reduction Maintenance System

DAY THREE

Significance of installing arc flash protection relays. Understanding limits of approach boundaries and precautions

  • Types of arc fault protection relays
  • Operation of the different types of arc fault protection relays
  • Limits of approach
  • Hazardous Area Classifications
  • Importance of hazard warning labeling
  • Electrical intrinsic safety
  • Incident energy
  • Hazards risk categories

DAY FOUR

Arc flash safety and hazard analysis. Control of internal arc faults

  • Arc flash hazards analysis manual calculations
  • Arc flash hazard analysis software and applications
  • Factors determining incident energies in cal/cm²
  • Arcing flash safety and maintenance
  • Incident energy verses bolted faults
  • Consequences of an internal arc
  • IEC standards on arc flash hazards
  • NFPA 70E arc flash hazards and protection

DAY FIVE

Personal protective equipment categories, arc proof and arc resistant switchgears and risk assessments

  • Personal protective equipment categories
  • Arc flash accidents and preventions
  • IEEE 62271-200 requirements for metal clad switchgears
  • Arc proof switchgears and arc resistant switchgears
  • Avoiding arc flash blasts
  • Remote racking of circuit breakers
  • Risk Assessment applied to Electrical Equipment and Isolation
  • Examining Ways to improve the Company’s Existing Electrical Safety Record

Course Methodology

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

Who should attend

  • Engineers and Technicians from electricity supply industry
  • Technical Management Professionals and Department Leaders
  • Engineers and Technical Personnel in power utilities, petrochemical plants, service professionals of large infrastructure projects
  • Participants need no specific requirements other than basic understanding of electricity Safety officers working in high voltage electrical installations

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