logging in or signing up Arc Flash Lunch and Learn - General jongrooters Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 891 Category: Entertainment License: All Rights Reserved Like it (1) Dislike it (0) Added: June 02, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide 1: Arc Flash and NFPA 70E Electrical Electrical Hazards : Electrical Hazards Shock Account for 600-1000 deaths per year Arc Flash Up to 80% of reported electrical injuries Arc Blast Caused from pressurized air and expansion of vaporized metal resulting from the arc Electrical Shock : Electrical Shock Arc Flash : Arc Flash Definition: The passage of electric current between two conducting metals through ionized gas or vapor, usually air. Initiated from either a flashover or introduction of some conductive object (like a screwdriver). Play Video Arc Flash Facts : Arc Flash Facts Can be up to 35,000? F About 4x hotter than surface of the Sun Molten metal thrown many feet in air Workers several feet from the source can receive severe or fatal burns Arc Blast : Arc Blast Play Video Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Skin Tolerance : Skin Tolerance NFPA 70E : NFPA 70E Electrical Safety in the Workplace Goes beyond just Arc Flash Defines shock and arc boundaries Defines Hazard/Risk categories Defines required personal protective equipment (PPE) Approach Boundaries : Approach Boundaries Limited: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which is not to be crossed by unqualified persons unless escorted by a qualified person. Restricted: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which, due to its proximity to a shock hazard, requires the use of shock protection techniques and equipment when crossed. Prohibited: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which, when crossed by a body part or object, requires the same protection as if direct contact is made with a live part. Flash Protection: The FPB is a safe approach distance from energized equipment or parts. Approach Boundaries : Approach Boundaries Incident Energy : Incident Energy Definition: Energy per unit area received on a surface located a working distance away from flash location. Units: Cal/cm2 Example: 1 Cal/cm2 is equivalent to energy produced by a cigarette lighter in 1 second. Hazard Categories : Hazard Categories Category 0: Up to 1.2 Cal/cm2 Category 1: 1.2 to 4 Cal/cm2 Category 2: 4.1 to 8 Cal/cm2 Category 3: 8.1 to 25 Cal/cm2 Category 4: 25.1 to 40 Cal/cm2 Over 40 Cal/cm2 : Unacceptable Risk Reducing Arc Flash Accidents : Reducing Arc Flash Accidents Safe field practices Including Lock Out/Tag Out procedure Wearing proper PPE (Personal Protective Equipment) Arc-Resistant gear Proper warning labels Lock-Out/Tag-Out : Lock-Out/Tag-Out Personal Protective Equipment : Personal Protective Equipment Fire Rated (FR) Clothing Proper layering underneath Head, Eye, and Face Protection Take care of equipment Play Video Arc Resistant Gear : Arc Resistant Gear Protection from internal fault Open space to disperse energy Reinforced doors/covers Shields around door-mounted equipment Arc Flash Warning Labels : Arc Flash Warning Labels Flash Hazard Boundary Hazard Category PPE Requirements Voltage Limited, restricted, and prohibited approach boundaries You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Arc Flash Lunch and Learn - General jongrooters Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 891 Category: Entertainment License: All Rights Reserved Like it (1) Dislike it (0) Added: June 02, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide 1: Arc Flash and NFPA 70E Electrical Electrical Hazards : Electrical Hazards Shock Account for 600-1000 deaths per year Arc Flash Up to 80% of reported electrical injuries Arc Blast Caused from pressurized air and expansion of vaporized metal resulting from the arc Electrical Shock : Electrical Shock Arc Flash : Arc Flash Definition: The passage of electric current between two conducting metals through ionized gas or vapor, usually air. Initiated from either a flashover or introduction of some conductive object (like a screwdriver). Play Video Arc Flash Facts : Arc Flash Facts Can be up to 35,000? F About 4x hotter than surface of the Sun Molten metal thrown many feet in air Workers several feet from the source can receive severe or fatal burns Arc Blast : Arc Blast Play Video Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Arc Flash Images : Arc Flash Images Skin Tolerance : Skin Tolerance NFPA 70E : NFPA 70E Electrical Safety in the Workplace Goes beyond just Arc Flash Defines shock and arc boundaries Defines Hazard/Risk categories Defines required personal protective equipment (PPE) Approach Boundaries : Approach Boundaries Limited: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which is not to be crossed by unqualified persons unless escorted by a qualified person. Restricted: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which, due to its proximity to a shock hazard, requires the use of shock protection techniques and equipment when crossed. Prohibited: A protection boundary to be crossed by only qualified persons (at a distance from a live part) which, when crossed by a body part or object, requires the same protection as if direct contact is made with a live part. Flash Protection: The FPB is a safe approach distance from energized equipment or parts. Approach Boundaries : Approach Boundaries Incident Energy : Incident Energy Definition: Energy per unit area received on a surface located a working distance away from flash location. Units: Cal/cm2 Example: 1 Cal/cm2 is equivalent to energy produced by a cigarette lighter in 1 second. Hazard Categories : Hazard Categories Category 0: Up to 1.2 Cal/cm2 Category 1: 1.2 to 4 Cal/cm2 Category 2: 4.1 to 8 Cal/cm2 Category 3: 8.1 to 25 Cal/cm2 Category 4: 25.1 to 40 Cal/cm2 Over 40 Cal/cm2 : Unacceptable Risk Reducing Arc Flash Accidents : Reducing Arc Flash Accidents Safe field practices Including Lock Out/Tag Out procedure Wearing proper PPE (Personal Protective Equipment) Arc-Resistant gear Proper warning labels Lock-Out/Tag-Out : Lock-Out/Tag-Out Personal Protective Equipment : Personal Protective Equipment Fire Rated (FR) Clothing Proper layering underneath Head, Eye, and Face Protection Take care of equipment Play Video Arc Resistant Gear : Arc Resistant Gear Protection from internal fault Open space to disperse energy Reinforced doors/covers Shields around door-mounted equipment Arc Flash Warning Labels : Arc Flash Warning Labels Flash Hazard Boundary Hazard Category PPE Requirements Voltage Limited, restricted, and prohibited approach boundaries