Explosion proof led light bulbs in the flour mill lighting applications

Introduction: flour mill why must choose Explosion proof led light bulbs?

In the flour milling plant, suspended in the air flour dust reaches a certain concentration, encountered sparks or high temperature will probably trigger an explosion. According to the U.S. Fire Protection Association [NFPA] data, dust explosions account for more than 25% of industrial accidents.

Explosion proof led light as a professional safety lighting equipment, approved special structural design of the internal arc and external combustible environment isolation, can effectively reduce such risks. In this paper, we will analyze the value of Explosion proof led light bulbs in flour mill applications.

First, the flour mill lighting environment special challenges

1.1 Dust explosion three elements of analysis

Combustible substances: flour particles [particle size <420μm when the lower explosive limit of 50g/m³]

Oxygen concentration: conventional workshop environment are satisfied

Ignition source: ordinary lamps and lanterns arc, high-temperature surfaces pose a hidden danger

1.2 Potential risks of conventional lighting equipment

Ordinary LED lights in the following links probably cause accidents:

Ballast failure generates electric sparks lamp surface temperature exceeds the flour ignition point [about 380 ℃] glass cover rupture leads to the exposure of internal components

Second, Explosion proof led light bulbs core technology analysis

2.1 Explosion proof led light bulbs three major safety mechanisms

Type of protection: explosion-proof [Ex d], the working principle of strengthening the shell to withstand the internal explosion pressure, applicable to the scene of flour milling workshop and other high-risk areas

Type of protection: increased safety [Ex e], the principle of eliminating the abnormal heating of parts, applicable to the scene of the raw material conveyor belt and other medium-risk areas

Type of protection: Intrinsically safe [Ex i], working principle Limit the circuit energy below the ignition threshold, applicable to low-risk areas such as control rooms.

2.2 Comparison of fundamental performance indicators

Surface temperature control: Explosion proof led light bulbs shell temperature ≤ 80 ℃ [far below the ignition point of flour] protection level: IP66 or more dustproof and waterproof guidelines impact strength: more than 7J mechanical impact resistance value

Third, the flour mill Explosion proof led light bulbs selection guidelines

3.1 Certification guidelines checklist

International: ATEX/IECEx certification [for export-oriented enterprises] Domestic: CNEx explosion-proof certification + mandatory certification of fire products Industry: GB12476.1-2013 dust explosion-proof guidelines

3.2 Scenario configuration program

Grinding workshop: recommended use of LED explosion-proof floodlights [power 150W or more, color temperature 5000K].

Packaging area: choose explosion-proof fluorescent lamps [with tempered glass shield].

Inside the silo: equipped with intrinsically safe explosion-proof emergency lighting system

Fourth, Explosion proof led light bulbs installation and maintenance points

4.1 Professional installation specifications

Cable introduction device must use explosion-proof stuffing box set up between different explosion-proof areas of isolation sealing joints lamps and lanterns spacing maintenance 1.5-2 times the height of installation

4.2 Intelligent maintenance program

Approval of the Internet of Things technology to implement:

Real-time monitoring of the surface temperature of the lamps and lanterns automatic alarm abnormal current fluctuations predictive replacement of aging seals

Fifth. Explosion proof led light comprehensive benefit analysis

5.1 Safety benefits

A flour group case shows:

3 years after the transformation of the explosion accident rate of 0 equipment failure rate decreased by 67

5.2 Comparison of economic benefits

Ordinary lamps: single lamp cost ￥ 300, annual maintenance costs ￥ 180, life expectancy of 3 years, 5 years total cost ￥ 780

Explosion proof led light bulbs: single lamp cost ￥ 1200, annual maintenance costs ￥ 60, life 8 years, 5 years total cost ￥ 1350

[Note: Explore the accident loss avoidance, explosion-proof lights can actually save hundreds of thousands of dollars].

Sixth, the global explosion-proof light regulations

2023 EU new regulations require:

All dusty environments must be used IIIC explosion-proof equipment to increase the dust penetration test [DIP test] mandatory emergency lighting system

Conclusion: Building an Intrinsically Safe Lighting System for Flour Mills

Choose to approve the ATEX / IECEx dual-certification Explosion proof led light, combined with intelligent monitoring system, can lay a multi-layered protection system.

As a manufacturer with 15 years of experience in Explosion proof led light research and development, we supply:

Customized services for Explosion proof led light for dusty environmentsFree hazardous area classification and assessment of the whole life cycle maintenance support.