LIGHTING in Hazardous (Classified) Locations
Topics What is a Hazardous Location? Who Classifies Hazardous Areas? Common Hazardous Location Areas Mechanics of Gas & Vapor Explosions Lighting for Hazardous Locations
Hazardous Locations Two Main Categories of Industrial Area Electrical Installations Ordinary Locations Shock & Fire Hazards Hazardous (Classified) Locations Explosion Hazards
Who Classifies Hazardous Areas? Electrical Inspector Engineer of Record Owner Expert Insurance Company MANUFACTURERS DO NOT CLASSIFY
Hazardous Locations First Hazardous Areas
Hazardous Locations Hazardous Location Defined Gases Vapors Liquids Dust Fibers/Flyings
Classes, Divisions & Groups Class I- Gasses Class II- Dust Class III- Fibers/Flyings
Classes, Divisions & Groups Classifications Divisions (Zones) Division 1 ( Zone 0 & 1 ) Normally hazardous Normally present Division 2 ( Zone 2 ) Not normally hazardous Not normally present
Hazardous Locations Hazardous Location Risks Fire Explosion Breakdown Equipment Damage
Hazardous Locations First Method of Protection
Common Hazardous Locations Grain Delivery Elevator Textile & Apparel Industry
Common Hazardous Locations Waste Water Treatment Plant
Common Hazardous Locations Refineries
Mechanics of an Explosion Fire Triangle FUEL Prevents Fire or Explosion COMBUSTION OXYGEN IGNITION
Hazardous Location Lighting Explosion Proof Enclosures Contain the explosion Prevent the escape of hot gases Allow only the cool gases to escape XP Enclosure Explosion occurs in the enclosure Gases cool before reaching hazardous area
Hazardous Location Equipment
Hazardous Location Equipment Common Flame-path Threaded Joint
Hazardous Location Equipment Common Flame-path Ground/Flat Joint
Hazardous Location Equipment Play - Explosion Demo Videos
Mechanics of an Explosion Sources of Ignition Arcing & Sparking Devices Sparking Metals Heat Static Electricity Loose Connections
Hazardous Location and LED Key Issues Safety Harsh environments Maintenance expenses Lifecycle costs Environmental pollution
Hazardous Location and LED Safety Maintenance Free Operation Installation Electrical Protection & Reliability SAFETY Beyond Economic Impact $$ Lighting Quality Lower Temperature Codes Vibration, Corrosion, Dust & Water Resistance
Hazardous Location and LED Harsh Environments
Hazardous Location and LED Maintenance Savings P Hours Permit Paperwork Job Safety Analysis Average time to replace light fixture = 5 Hours Driving to jobsite Getting Equipment Getting to fixture Fixture Setup Q Hours R Hours % of time using Ladders 60% Man Lift 20% Bucket Truck 15% Scaffolding* 5% * Time to build Scaffolding 10ft = 16 hrs 20ft = 20 hrs S Hours HID/FL Disposal Closing Permit
Hazardous Location and LED LED Advantages Long Life Light Source Dim gradually over time LEDs rarely fail catastrophically Excellent lumen maintenance 70% sustained lumens at 60K hours Eliminates frequent maintenance Typical HID 7K to 15K Durable Light Source - Contain no filaments or glass
Hazardous Location and LED LED Advantages Long Life Energy Efficient Durable Small Size Mercury free Instant On Dimming capabilities
Reflector Hazardous Location and LED LED Conventional Lighting Directional Light source Minimizes any wasted light Places more light on task Improves overall fixture efficiency 27
Hazardous Location and LED Instant Start Requires no warm up No loss of light at cold temperature Environmentally Friendly Contains no mercury Energy efficient Reduced disposal cost 28
Hazardous Location and LED LED fixtures have been well received for use in hazardous locations and harsh industrial locations 29
Hazardous Location and LED Questions? 30