Why should I perform an Arc-Flash Analysis?
Without an Arc-Flash Analysis, you cannot protect your employees from an arc-flash. It is imperative to know realistic values for fault current as well as clearing time for protective devices in order to determine the proper Personal Protective Equipment (PPE) for your electrical workers. Guessing or assuming an infinite bus can be dangerous! Only a complete system analysis allows for proper hazard assessment and recommendations for the appropriate Arc-Flash Protection.
Are there regulations regarding Arc-Flash Protection?
Indeed there are. OSHA 29 CFR 1910.132 (d) requires employers to assess the workplace to determine if hazards are present and select and require each employee to use the types of PPE that is needed to protect them from the hazard……...Verify that the required workplace hazard assessment has been performed through written certification that identifies the particular workplace evaluated.
NFPA 70E-2004, Article 110.8 (B) (1) (b) states that a flash hazard analysis shall be done in order to protect personnel from the possibility of being injured by an arc-flash. The risk analysis shall determine the level of the hazard and the proper rating of the PPE for the given task.
In performing an Arc-Flash Analysis, what is the Proper Procedure?
- Gathering Electrical System Data and Site Assessment
- Short Circuit Study on the Electrical System
- Protective Device Coordination Study
- Evaluation Analysis of Electrical Equipment
- Arc-Flash Hazard Analysis and Equipment Labeling
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