Arc Flash Live To Tell Training Video & DVD by Coastal Training / DuPont

Arc Flash Live To Tell Training DVD
  • SKU: ELE016-DVD
  • Copyright: 2011
  • Runtime: 16 mins
  • Producer: Coastal Training / DuPont
What's in The Box
  • (1) 16 Minute Training DVD
  • (1) Customizable Powerpoint Presentation
  • Printable Leaders Guide
  • Printable Bonus Material
  • Printable Quiz
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Product Description

Coastal's Arc Flash Live To Tell DVD

Did you know that in the extreme temperatures of an arc flash blast metal vaporizes? Did you also know that the sound can reach 160 decibels causing permanent severe hearing damage? Make sure your employees never experience the devastation of an arc flash explosion. This life-saving training program will bring you and your workers up to speed on the 2009 version of NFPA70E. Get the latest information on
arc flash prevention.

  • Definition of arc flash
  • Safety documentation and regulations
  • Latest information on NFPA 70E 2009
  • Qualified vs. unqualified persons
  • Three critical approach boundary areas
  • Job planning and hazard analysis
  • Lockout/tagout procedures
  • Proper PPE application
  • Format: DVD
  • Language: English
  • Length: 16 minutes
What's in The Box

What's In The Box

  • (1) 16 Minute Training DVD
  • (1) Customizable Powerpoint Presentation
  • Printable Leaders Guide
  • Printable Bonus Material
  • Printable Quiz

Video Transcript

Arc Flash Live to Tell

As an electrical professional you already know that working with electrically charge equipment is serious business. Any job even the one you're working on right now has potential electric shock and arc flash hazards that could injure or even kill. This program focuses on arc flash hazard a sudden defining explosion, fire and shrapnel that can happen in a split second. In fact, most workers caught it in arc flash explosion never knew what hit them. That's why the most important thing you can do on a job is to think about how to work safely. Your employer developed workplace safety procedures to minimize the chance of incidents, but there are still some hazards out there to be control. It's your job to learn about and follow safe work procedures. In the next few minutes we'll go over more about what causes an arc flash and why it's so hazardous. We'll talk about proper job planning and where to find related documentation and safety regulations. And most of all you learn how to prevent arc flash and how to protect yourself in case it happens to you.

What is Arc Flash?

An arc flash occurs when an electrical charge travels through the air creating an arching fault between two ungrounded conductors or between ungrounded conductor and a grounded conductor. Loose connections can overheat and cause an arching fault. The introduction of foreign matter can also trigger an arc flash. Loose screws or tools resting on top of a breaker box, can fall into the switch area creating a gap between conductors small enough to allow an arc flash. In your professional training and experience you probably already know something about arc flash, but if you've never seen it happen it's easy to forget how hazardous it can be. The massive amount of energy release during an arc flash incident is powerful enough to do some real damage. The temperature of an arc flash can reach 35,000°F. To give you an idea how hot that is steel melts at 2,800°F, in fact superheated air can cause pressure ways that literally throw you across the room. Metal is vaporized and hot shrapnel flies everywhere igniting clothing. The sound created by an arc flash explosion can reach of defining 160 decibels and cause serious hearing damage.

Arc Flash Prevention

Now that you know how hazardous and sudden an arc flash occurrence can be, you can appreciate how important it is to prevent it from happening. First, you need to know where to find official documentation and regulations. NFPA 70E standard of electrical safety in the workplace it is the most comprehensive guidelines for meeting safe work requirements and OSHA regulations relating to electrical hazards. IEEE Standard 1584 guide for performing arc flash hazard calculations, provide more technical information for analyzing electric power systems and evaluating arc flash hazards. Preventing arc flash incidents begins with the equipment and system designs that impact the frequency of occurrence and magnitude of energy release. Equipment maintenance programs are important to assure equipment will perform as intended even arc flash occurs.

Proper training for each workplace is a vital part of arc flash prevention. The training you need to work safely depends on the job you'll be doing and the equipment you'll be working on. Just it each job is different your training must have specific issues and hazards of the work you'll be performing. For example, you'll need more training to work on electrically energized equipment simply because it is more hazardous. Each different work site requires additional training.

Qualified and Unqualified Persons

To ensure everyone safety, jobs specific training divides personnel into two groups:

  • Qualified
  • Unqualified

Simply put being qualified means you have the training and knowledge to perform a specific tasks safely, and that you have demonstrated this knowledge and skill, being unqualified means you don't. Since each job is different being qualified for one job doesn't mean you're qualified on other. As a qualified person you'll need to know the construction and operation of equipment and specific work method. You'll also need to know about the specific hazards related to the work you'll be doing and the equipment involve. Being qualified also means it's your responsibility to set up barriers to keep unqualified people away from any identified hazards in your work area. For example, the arc flash protection boundary at levels between 50 and 600 volts is 4 feet with mathematical calculations for levels above 600 volts. An unqualified person needs to know and follow policies and procedures required for safe work, even if you weren't working on energized electrical equipment. 

Job Planning and Hazard Analysis

With any job, planning is key to safety and success. Mapping out procedures, identifying hazards and establishing safe work procedures can greatly minimize many risks. Your employer develops an electrical safety program with monitoring and documentation of hazard control, measures and procedures, to ensure that any area you work in and any work you do is safe. Your employer also performs an electrical hazard analysis for electrical equipment operating at 50 volts or more. A shock hazard analysis determines the;

  • Voltage
  • Safe boundary requirements
  • Safe equipment
  • Personal Protective Equipment (PPE)

By far, the most successful method of preventing exposure to electric arc and shock hazard, is by achieving an electrically safe work condition. This involves turning off the power to the equipment you are working on. Verifying that it's off and using a lockout/tagout system to ensure it stays off while you're working. However, in some situations you may not be able to achieve an electrically safe working condition. In fact, you may find that the steps to achieve the electrically safe work condition involve working on energized equipment. If you're going to work on energized electrical conductors or circuit parts you'll need an energized electrical work permit. Remember only qualified personnel trained for that specific job are allowed to work on energized electrical equipment.

Before anyone is allow to work on energized electrical equipment, an arc flash hazard analysis must be completed to identify possible arc flash risks and to define the flash protection boundary. This delineates the area around exposed energized parts in which you can get a second degree burn to expose skin or ignite flammable clothing should an arc flash occur. The flash protection boundary for up to 100 Ka cycles is generally 4 feet for voltage level between 50 and 600 volts. For level succeeding 600 volts, the boundary must be calculated using a mathematical formula.

Shock Hazard Boundary Levels

  • Limited - the limited approach boundary is the closest system unqualified person can get to exposed energized equipment.
  • Restricted - the restricted boundary is the area near exposed energized equipment that can only be crossed by qualified persons using appropriate shock prevention procedures.
  • Prohibited - the prohibited approach boundary can only be crossed by qualified persons and must be approach using the same protection as if direct contact with exposed energized equipment as planned. 

Although these programs and analysis are your employer's responsibility, it's up to you to ask your supervisor if you have any questions about them.

Lockout/ Tagout

One of the best ways to prevent an arc flash is to follow strict lockout/tagout procedures. When a single qualified person de-energized its equipment that person is responsible for locking and tagging the equipment, this is called a simple lockout/tagout since no written plan is needed. Complex Lockout/Tagout usually involves more than one person and requires a written plan of execution identifying the authorized person in charge of a lockout/tagout. This procedure is use when a job involves multiple energy sources, cruise, crafts, locations or employers. It ensures that every worker understand the hazards and lockout/tagout procedure used.

Wearing Proper Personal Protective Equipment (PPE)

Now you're ready to get down to work, you've done all the job planning and identified all potential hazards, but in unexpected arc flash could still happen. How are you going to protect yourself? By using the proper tools and protective equipment you can minimize or even eliminate the chance of serious injury. Whenever you crossed the arc flash protection boundary or restricted approach boundary, you must use proper tools and wear PPE require for the job. The NFPA 70E standard lists the recommended equipment and PPE for a wide variety of tasks. PPE can range from:

  • Flame Resistant (FR) Coveralls
  • Flame Resistant (FR) Hood called Balaclava 
  • Undergarments

You're probably be required to wear an FR hood with tinted shields to prevent eye injury, your employer will tell you exactly what's required. Never ignore protective clothing requirements in an arc hazard situation. Proper PPE must be worn when entering the arc flash approach boundary. Exact PPE requirements for arc flash protection are specified by an incident energy analysis, which should be conducted by your employer prior to work. 

The incident energy analysis determines the amount of thermal energy transferred to a person's body from an arc flash incident. Your energized electrical work permit will also lists required PPE for your specific tasks. For example, NFPA 70E guidelines show that work on a 600 volt class motor control setter requires a non-melting or natural fiber t-shirts and long pants under flame resistant clothing or coveralls. A hard hat, safety glasses or googles under an arc rated face shield or flash shield hood and leather shoes and hand protectors. Again always check your energized electrical work permit and NFPA 70E tables for more details about your specific tasks and its hazard risks category.

When working in the designated arc flash hazard area, you'll wearing arc flash suit including the hood space shield. An arc flash suit must be ready to protect you from potential shock and thermal arc flash exposure. Approved safety glasses or googles must be worn under face shields. Wear leather flame recharging gloves with an arc flash ratings suitable for the arc flash exposure. Even if you're using insulating gloves for shock protection leather gloves must be worn over them. Even the clothing you wear under an arc flash suit must be ready and approved for the arc flash potential you'll be expose to.

Before using any PPE check it thoroughly for any rips, cracks or other damage, if it's damage in anyway don't use it. Don't use equipment with grease, oil, flammable liquids or combustible materials. These materials can ignite and an arc flash explosion and compromise PPE performance. Before starting work around exposed energized parts remove conductive articles like jewelry, metal frame eye glasses, metal head gear, key chains and clothing that conductive thread or decorations. Be sure to wear clothing made of natural fiber or non-melting materials. Never wear nylon, polyester, acetate or polypropylene next to your skin, these fibers melts, stick and cause severe burns. Always check safety documentation for approved and recommended clothing. Using good judgment and written procedures as well as following safe and smart work practices, can be your best defense against an arc flash injury.

Analyses for Proper Equipment

Your employer may also conduct individual hazard analysis to determine the proper equipment needed. Insulated tools must be use when working inside the limited approach boundary, where tools could make accidental contact with exposed energized equipment. All insulated tools and voltage meters you're using must be rated for the voltages on which they're use. They should also be designed and constructed appropriately for the environment and use of the job in question. Most important, it's your job to inspect tools and equipment for damage and where fine to using them. Never assumed that a piece of equipment is okay to use because you didn't get hurt last time you use it.

Take a look at your work area before you start. Be sure there's adequate line so you have a clear view of the job. You should never have to reach blindly into a dark area or wear your views obstructed. Inspect the work area thoroughly before starting. Pay attention to chains, pipes, scaffolding and anything else that might come in contact with energized parts, or even with your tools as you're using them. Make sure your tools and other equipment are rated for the proper voltage before using them. Inspect them for wear and damage, while working keep all tools in a designated area away from contact with exposed energized parts. Never rest unused tools on top of equipment with they can fall on to an exposed energized part.

Protective Boundaries

While working on exposed energized part keep all unqualified persons out of the flash protection boundary and a limited approach boundary using easily viewable signs and barricades. If marking the area doesn't provide sufficient warning, station an attendant to keep people outside the limited approach boundary. Be sure the attendant remains there until the hazard is gone. Also check with your supervisor to see if you are required to post an attendant to watch you as you work on an exposed energized parts. Never ever assume any part has been de-energized, always test first to be sure. Follow lockout/tagout procedures and double check with your supervisor if you have any questions about lockout and de-energizing plans.  Above all make absolutely sure you are qualified to work a job before starting. If you're not sure check with your supervisor.

Whenever the danger of an arc flash explosion or an electrical shock is possible, safety is the main ingredient of any job plan. In these few minutes, we've talk about what an arc flash is, why is so dangerous and what can cause an explosion. We've learned how proper job planning helps keep arc flash related incidents from happening in the first place. And we've discussed how to protect yourself when working around exposed energize equipment. You also know how to find out what PPE is to use and how it can protect you in case of an arc flash occurrence. 

For more information about safety guidelines and regulations check out the NFPA 70E standard for safety in a workplace, the IEEE Standard 1584 guide for performing arc flash hazard calculations and any OSHA documentation related to your type of work area. Also consult your workplace safety documents or asks your supervisor. When you get back to work will you be better able to recognize a potential arc flash hazard before it happens? Will you know how to work more safely around energized equipment? Remember it's up to you to make sure you've followed these guidelines to protect yourself and others.


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