Understanding Arc Flash Analysis and Arc Flash Safety – Syllabus                                                 7 Continuing Education Units

 

Understanding Arc Flash 

Analysis and Safe Work Practices

What is an ARC?

Safety Switch

Arc Chutes

Tests

Ratings

Interrupting Rating

Short-Circuit Current Rating

There is a Difference between SCCR and Interrupt Rating (IR)

Exercise 1

Watch the video clips

Burns

What are the Types of Burn?

Energy

What is an Arc Flash?

Plasma – electric air

Exercise 2

Why the focus on Arc Flash?

Four industry standards concern the prevention of arc flash incidents:

OSHA 29 Code of Federal 

NFPA 70-2002 National Electrical Code.

NFPA 70E-2012 Standard for Electrical Safety 

IEEE Standard 1584-2002 Guide for Performing Arc Flash Hazard Calculations. Compliance with OSHA 

Exercise 3

PPE

Personal Protective Equipment – Selecting Adequate Protection

Steps required for a flash hazard analysis

One Line Diagram

Flash hazard analysis -  a new approach

Short-Circuit Study

Coordination Study

The Problems

Introduction

Short-Circuit Current Calculations

Understanding Arc Flash Analysis and Arc Flash Safety – Syllabus                                                 7 Continuing Education Units

 

 

Exercise 4

How to calculate short-circuit current

Short-Circuit Current Calculations

Procedures and Methods

Three-Phase Short Circuits

Short-Circuit Current Calculations

Exercise 5

Another sample calculation

Single Phase Shorts

Single Phase Shorts

Short Cuts

Exercise 6

Now it’s your turn

Breather

The next steps in the Arc Flash Hazard Assessment

Your One-line

AFIE

On-line Calculators for Arc Flash

 

Safe Work Practices

Qualified Workers or Persons

Identify the hazards

Approach

Lethal Voltage

Safe Approach Distances

Shock Hazard Analysis

Approach Boundaries 

Electrically Safe Work Condition

 Apply lockout/tagout devices in accordance with a documented and established policy. Damage caused to equipment

 

Final Quiz