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ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
Headlights - Headlamps - Hard Hat Lights
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting

07/22/11 Classification Compliance and its Importance

Industrial and commercial work areas where flammable chemicals, materials, vapors, gases or other materials such as combustible dusts are present, or operations create the potential for fires or explosions, are typically considered hazardous locations by regulating bodies such as OSHA. Such hazardous locations are required by laws and regulating agencies to institute and implement procedures and equipment that is capable of reducing or eliminating the potential for fires or explosions these locations present.   


Practicing prevention and providing protection in hazardous locations is accomplished in several ways. Prevention is primarily accomplished through providing training and instilling procedures at the worker level intended to establish safe practices when handling or working with flammable materials or within hazardous locations. Protection is provided through the inclusion of equipment that has been approved by accepted laboratories such as UL as being either intrinsically safe or explosion proof.


Intrinsically safe equipment is at its core designed to operate with a limited current level that is kept below a point where it could potentially produce ignition through the creation of heat, sparks or flame. Such equipment is generally of the highest approval rating and suitable for a wide variety of hazardous environments, but as will all explosion proof equipment, specific suitability is determined by classification and rating.


Explosion proof equipment is generally equipment that prevents ignition by either completely sealing all possible sources of ignition from contact with potentially flammable compounds or materials within a housing that can withstand fire or explosion and keep internal combustion from exiting the housing, or restricting the exit of heated gases to slow their exit enough so they are too cool to ignite the surrounding atmosphere once they leave the fixture.


Regardless of how protection is achieved, all electrical equipment used in hazardous locations must be rated for use in that particular type of environment. Determination is made through the use of a rating system outlined in the National Electrical code which is made up of classes, divisions, groups, and or zones. Classes designate the type of hazardous materials that may be encountered and include Class 1 for vapors and gases, Class 2 for combustible dusts, and Class 3 for Fibers and Flyings. Divisions designate the typical conditions of the hazardous location and are based on whether the hazard will exist as a normal part of operations (Division 1-Normal)or has the potential to exist but is not normally encountered all the time (Division2-abnormal).


 Groups designate the nature of the materials in each class and are noted as Groups A, B, C, D, E, F, and G. This is a descending order, with group A denoting acetylene gas which has the highest explosion potential, Group B representing compounds such as Hydrogen, and groups C and D denoting the most commonly encountered compounds such as gasoline and propane. Groups E, F and G denote combustible dusts and are based on the properties of specific types of materials that make up these dusts according to their conductivity and flammability. Metallic dusts are high conductive and so receive a Group E rating. Group F contains highly flammable dusts such as Coal and Carbons, and Group G contains more common materials such as Flour, Starch, Sugar and the like.


Explosion proof equipment thus must meet the requirements of a hazardous location based on how that environment is classed. A Class 1 Division 1 Groups A, B, C and D fixture will thus be of the highest protection rating and suitable for a variety of conditions and materials, Class 1 Division 2 fixtures will be suitable for combustible dusts with occasional exposure, and so on as classes and divisions vary.


Of the utmost importance for those operating or managing hazardous locations is ensuring the suitability and compliance of explosion proof or intrinsically safe equipment. As can be seen from the aforementioned ratings system, simply because equipment is approved for hazardous locations, does not impart suitability for all locations. Equipment must be matched to the hazardous location in order for operators to be in compliance with regulations or else safety is compromised and citations are possible.  


To ensure compliance, it is important to ensure that equipment carries the proper certification in the form of tags affixed to the fixture and the proper accompanying literature if necessary. Some manufacturers produce inferior products or misleading labeling, such as is the case with fixtures that are labeled “vapor proof”, but do not carry a statement making explicit their non conformance to explosion proof standards. Operators should only select equipment that carries clear certification and attempt to avoid the temptation to base judgments entirely on price, and instead deal only with reputable and established manufacturers and suppliers. The critical nature of hazardous locations and the high risk for workers within these locations makes ensuring compliance and safety mandatory, with little room for justifying compromise.


The history of the industrial workplace is littered with examples of disaster and tragedy that resulted from attempts to cut corners and poor adherence to hazardous location safety compliance. The loss of life, damages to operations, and oftentimes extreme penalties, make ensuring compliance more cost effective than any possible cost cutting be it either through failure to provide training or use of improper or poor quality equipment. By ensuring compliance, operators are ensuring not only the safety of their employees and the workplace, the continued long term production of their operations.

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