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Arc Flash Training in Cincinnati

 ARC FLASH STUDIES

  

WHAT DOES OSHA & NFPA SAY?

 OSHA Part 1910.132(d)(1) - "The Employer shall assess the workplace to determine  if hazards are present, or are likely to be present, which  necessitate the use of personal protective equipment (PPE). "

 OSHA Part 1910.132 (d)(1)(I) - "Select, and have each affected employee  use, the types of PPE that will protect the affected employee from the hazards identified in the hazard assessment; "

 OSHA Part 1910.132(d)(2) - "The employer shall verify that the workplace hazard assessment has been performed through a written certification that: identifies the workplace evaluated; the person certifying that the evaluation has been performed;  the date(s) of the hazard assessment; and which identified the document as a certification of hazard assessment."

NFPA 70E-2012, 130.5 states that a flash hazard analysis must be performed in order to determine the level of hazard and appropriate PPE for given tasks.

AN ARC FLASH STUDY CONSISTS OF:

-Data collection of your distribution system.

-Arc flash study performed based on the data.

-Stickers put on your equipment.

BERTKE ELECTRIC’S ARC FLASH STUDY CONSISTS OF:

-Data collection of your distribution system by a Trained Electrician.

-Since a trained electrician is doing the data collection, we do a Safety Assessment and point out any unsafe conditions.

-We do a Short Circuit Analysis which ensures that your breakers have the proper fault current sizing for the inrush they can incur.  If they are not properly sized, they could explode.

-We develop a One-Line-Diagram of your entire system including feeder sizes, panels, disconnects, transformers, ect.  

-We provide you a copy of this One-Line with your completed study.

-We do a Breaker Coordination Study which identifies the proper settings for your breakers.  This allows the fault to clear systematically without tripping the main or other devices up stream.

-We now do the actual Arc Flash Study and print out the labels.

-We install the labels on all equipment.

-We Adjust Your Breakers per the Breaker Coordination Study.

-We give you a System Modification/Risk Reduction Recommendations that allow you to lower the Arc Flash

  potential.  This can consist of changing fuse types or breaker types.

-We provide your personnel with Arc Flash Training consisting of:

 

Power point layout                                                                    Incident Energy

OSHA compliance                                                                     Levels of Protection

FPA defining Hazards                                                                Table method

Importance of NFPA 70E                                                           PPE

Understanding the Hazards (Shock, Flash, Blast)                         Electrical Safe Work Conditions

Boundaries (Limited, Prohibitive, Restricted, and arc flash)          Job Briefing, hot work permits, insulated tools

Fault Currents and Over Current protection                                Case Studies

 DO YOU WANT JUST AN ARC FLASH STUDY OR A

BERTKE ELECTRIC ARC FLASH STUDY

 WE CAN PROVIDE THERMAL IMAGING AND ULTRASONIC TESTING WHILE PERFORMING YOUR ARC FLASH STUDY!

  CALL US TODAY TO GET A QUOTE 513-542-2350

ARC FLASH DEFINED

 An arc flash is a possibility whenever/wherever there is energized electrical equipment. A short circuit between live conductors or between a live conductor and ground, caused by unmaintained or faulty equipment—or such missteps as crossing two conductors with a voltmeter probe, being clumsy with a screwdriver or slipping with a wrench—can produce a violent reaction as the electricity vaporizes some of the metal parts involved and blasts through the air, releasing large amounts of light, heat, sound and debris.

Arc-flash hazards are a major concern of OSHA, which depends on standards set by The National Fire Protection Association (NFPA) that cover the standards for electrical safety and recommends the types of PPE users are required to wear (and when they are required to wear it). The standards recommend that electrical panels be labeled with such things as the available fault current at each location, the category of arc-flash risk at that location, the arc-flash boundary (defining the distance from the panel within which PPE must be worn) and the level of PPE required. 

WHAT CAUSES ARC FLASH HAZARDS?

 In short, electrical short circuits cause the arc flash hazard.  Electrical faults on electrical systems can be in the form of phase-to-ground, double phase-to-ground, and three phase. The amount of energy in an arc can be enormous is some cases. Electrical arcs create plasma, hot vapors, and gases that can rise to 23,000 °F.  The heat produced can ignite clothing more than 10 feet away.  

COST OF A REACTIVE SAFETY PROGRAM

  • Accidents (costly equipment and facility damage)
  • Injured personnel (unplanned medical costs)
  • Increased overhead (fines, medical expenses, health insurance, workers’ comp insurance)
  • Reduced productivity (lost work days, light duty work, medical leave)
  • Increase in poor attitudes and morale as injuries increase (productivity declines)
  • Increased turnover (hiring and training costs increase)
  • Increased costs of goods/services sold (price increases/lost profits
  • Interrupted workflow (orders not delivered on time)
  • Disappointed customers (possible loss of market share)

Personal Protective Equipment, “PPE”

PPE is used to limit the injury incurred during a fault to a level no greater than the exposure of bare skin to an open flame for approximately 1 second (approx. 1.2 cal /cm², a curable 2nd degree burn). If an Arc Flash study has not been performed at your installation, NFPA 70E has several tables that your “qualified personnel” should apply when determining PPE. In some cases the PPE worn by your “qualified personnel” is oversized for a certain task in a specific location. In other cases where improper equipment is installed or existing equipment is maintained improperly, the Arc Flash energy could be MUCH GREATER than what their PPE can protect them from. If a fault has an Arc Flash energy greater than 40 cal/cm² the pressure wave will be so great that PPE can no longer provide adequate protection. Our Arc Flash study provides suggestions on how to reduce Arc Flash energy to safer levels, and it also points out improperly maintained and installed equipment.

How to Reduce Arc Flash Energy

There are three ways that Arc Flash energy can be decreased. First, the available short circuit current from the utility could be decreased (probably not possible). Second, the impedance in the local power distribution system could be increased (may be difficult and/or expensive). Third, the trip time of protective devices could be decreased. One of the more common suggestions that we have made to reduce Arc Flash energy is circuit breaker trip adjustment. The adjustment of circuit breaker tripping devices can decrease the amount of Arc Flash energy that is the result of a fault. Care must be taken when implementing this solution, as protective device coordination may be affected when reducing the trip time of protective devices. A benefit of decreasing the Arc Flash energy is that it could lower the level of PPE required.

Why should we perform an Arc Flash Study for you?

An Arc Flash study is not required by the NEC, but Arc Flash equipment warning labels are. If you do not have any Arc Flash labels now, you need to install them.

These labels are included in our Arc Flash study.

An Arc Flash study may be required by the NFPA 70E.

If your system falls outside the boundaries set for the NFPA 70E PPE tables, then an Arc Flash study is required.

We provide calculated Arc Flash energy values and labels that will be a key part of your Electrical Safety training

If your electrical personnel do not know what level of PPE is required for a task, as per NFPA 70E, you need to inform them.

We inform you of the required NFPA 70E PPE level and provide a detailed Arc Flash label which can be placed on equipment.

Do you have improperly maintained or installed equipment that would cause the increase of Arc Flash Energy or increase the potential for a fault to occur?

Your system will be thoroughly analyzed as a part of the Arc Flash energy calculations.

The following are common areas of concern:

  • Circuit breaker trip settings
  • Using Motor Circuit Protectors “MCPs” as feeder breakers
  • Under-rated or improperly sized fuses and circuit breakers
  • Under-rated Motor Control Center “MCC” buss bracing
  • Under-rated MCC starters and feeder breakers
  • Under-rated Switchgear, Switchboards, and Panel boards

So, why not let us give you a quote to perform a detailed study that will include the required labels, required level of PPE details, and suggestions on how to decrease the available Arc Flash energy?

 CALL US TODAY TO FIND OUT HOW OUR MANY SERVICES CAN BENEFIT YOU AND YOUR COMPANY!

 


CONTACT US TODAY TO FIND OUT HOW OUR MANY SERVICES CAN BENEFIT YOU AT HOME & AT YOUR COMPANY!

 

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