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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

07/13/11 Combustible Dust Standards and Preemptive Safety

Article- July 2011 By Larson

Larson Electronics LED Light With UL Approval Tag

There is no question that combustible dust is a serious problem in the industrial and commercial workplace. Although some agencies have stated there were less than 300 fire and explosion incidents related to combustible dust in the United States from 2000 to 2005, media investigations have found as many as 12 incidents per week may be a more realistic number. Whether you agree with professional estimates or accept media findings, several large incidents have gained enough national recognition through loss of lives and financial impacts that OSHA has begun making tentative efforts towards putting together an actual combustible dust standard and implementing it. Although the Sept. 10 Upper Big Branch mine explosion in West Virginia that killed 29 miners led to an emergency mine dust ruling that as of June 2011 has become permanent, this ruling is not comprehensive, nor does it apply to all industry.


As of this writing, OSHA has yet to institute a solid set of standards for combustible dusts. Many officials adopt NFPA recommendations into their local fire codes as a result in order to attempt some level of regulatory standards across a broad spectrum. Whether or not any meaningful regulation emerges from OSHA in the near future, it is best that any industry or commercial operation associated with combustible dusts be preemptive and adhere to any local regulations as well as adopt their own measures and enforce them. The potential for injuries and catastrophic damage are simply too high to justify waiting for enforced adherence when the information and equipment necessary to take preventative measures is already so readily available.


Most industries where combustible dust is a concern do indeed work towards creating the safest workplace possible. Managers, operators and workmen are trained and kept up to date on procedures and proper operations, equipment is chosen for hazardous location suitability and inspected regularly, and local ordinances and standards instituted. The NEC and NFPA have made identifying and classifying hazardous locations a fairly simple matter, and international cooperation has led to a slow but steady gravitation towards a zone based standard being accepted worldwide for homogeneity. Despite this, there still exist a wide disparity in practices and levels of vigilance that continue to result in serious incidents occurring all too frequently.


Aside from training, one of the biggest subjects that continually draws repeat citations from regulating bodies is equipment and its proper installation and use. Many incidents resulting in fires and injuries have been found to be the result of a lack of equipment, improper operation and or maintenance of equipment, and equipment that was not properly rated for a particular hazardous environment. In some instances it is understandable that there may be some confusion leading to mistakes as some equipment manufacturers may be somewhat misleading or unclear in the marketing of explosion proof equipment. One of the biggest examples of this can be found with equipment that is marketed as being vapor or dustproof, with little clarification of its lack of UL or ETL explosion proof approval. Although it is the responsibility of operators to ensure their equipment carries the proper approval, such misleading marketing can be confusing enough to cause problems even for experienced operators.


The only way to ensure the suitability of equipment for hazardous locations is to be certain it carries the required labeling and that all accompanying documentation of approval is present. Without a clear and readily visible approval, any equipment being considered should be considered out of compliance and passed over. Further, it is critical that equipment be properly chosen according to its classification. For locations where combustible dust is present, a Class 1 Division 1 rating is going to be out of compliance as it is geared towards gases and vapors and not flammable particulates. This illustrates for us the importance in differentiating between classifications and how critical properly matching equipment to conditions is. Just because a unit carries an explosion proof approval does not make it suitable for all hazardous locations.

Clear documentation and a good working knowledge of classification ratings is necessary in order to ensure the maximum protection possible with any given piece of equipment. A Larson Electronics HAL-LI-48-2L-LED Explosion Proof LED Light for example would be good for both vapors and dusts due to its Class 1 Division 2 and Class 2 Division 2 ratings and clear documentation affixed to the fixture itself, while another light rated Class1 Division 1, but not carrying any documentation, would be not be considered within compliance for a location where dust is present.


 In addition to training and equipment, diligent maintenance must also be followed to maintain safety measures at consistent levels. Especially in industrial environments where equipment can be exposed to heavy wear and damaging elements, particular attention must be given to ensuring the proper operation and condition of explosion proof equipment. Combustible dust environments present a particular challenge due to the fact that even though dust control measures may be in place, dust will accumulate in inconspicuous areas regardless. On top of lighting fixtures, between machinery openings and vents, in corners and along upper surfaces, dust accumulates into layers and becomes a latent danger with explosive potential.

 Although an area my appear clear, if vibrations or a small primary explosion occurs, this accumulated dust can be dislodged and become suspended in the air, leading to a secondary explosion of great violence. To this end, maintenance in combustible dust environments requires particular attention to a regular schedule of cleaning and inspection to ensure no accumulations.


Until OSHA devises and institutes a clear set of standards it is up to operators to take the full responsibility for combustible dust safety. Although implementing the training and equipment necessary entails an added expense that can oftentimes be difficult to absorb, without such preventative measures, an even greater loss is possible that cannot be recovered from.

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Hazardous Area LED Light -Class 1 Div 2 Groups A, B, C, D and Class 2 Div 2 F,G - 4' 4 lamp
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