Hazardous Area Lights – A Complete Guide

Introduction

Hazardous areas present unique challenges due to the presence of flammable gases or combustible dust. To prevent accidents, these environments require specialised lighting solutions that are intrinsically safe and explosion-proof. Hazardous area lights are designed to meet these stringent safety standards and provide reliable illumination in such demanding conditions. This guide covers the basics, significance, types, and versatility of these lighting fixtures to help you choose the right choice for these high-risk environments.

Understanding Hazardous Area Lights: Definition and Key Functions

Hazardous area lights, also called ATEX lights, are specialised light fittings designed for use in environments where flammable gases, vapours, dust, or other hazardous substances are present. These lights ensure both safety and functionality by minimising the risk of igniting flammable substances and complying with stringent safety regulations. A hazardous area light operates safely in explosive atmospheres such as oil rigs, chemical plants, grain processing areas, and many industrial facilities where a small spark could cause an explosion. Key functions of hazardous area lighting equipment include:

• Ensuring operational safety by reducing accident risks.
• Enhancing visibility for workers, improving productivity.
• Compliance with industry regulations and standards.

Introduction to Hazardous Area Zones and Classifications

Hazardous areas are categorised into zones or classes based on the level of risk and the presence of flammable substances. Understanding these classifications is crucial in choosing the correct lighting solution that meets the necessary safety standards. Moreover, the classification standards differ depending on regional regulations.

• European Zones (ATEX): Zones 0, 1, and 2 indicate the presence of gases or vapours, while Zones 20, 21, and 22 refer to the presence of dust.
• Zone 0/20: This zone indicates constant or long-term presence of hazardous substances.
• Zone 1/21: Signifies the potential presence during normal operation.
• Zone 2/22: Only present in abnormal or emergency conditions.
• North American Class/Division System: This system uses classifications such as Class I, II, or III and Division 1 or 2 to specify the types of hazards and the frequency of their presence.

The Significance of Using Hazardous Area Lights in Various Settings

Hazardous lighting is of significant importance due to its indispensable nature and functionality. Standard lighting fixtures may generate sparks or heat, which may lead to catastrophic consequences in environments with flammable substances. In addition, hazardous area lighting encapsulates any potential sources of ignition, prevents explosions, and makes areas safe and secure for use. These lighting fixtures are also significant in terms of robust durability, non-corrosive features, and reliability. Additionally, these ATEX lightings ensure compliance with legal safety requirements across various settings.

Types of Hazardous Area Lights You Should Know

Hazardous area lighting can be categorised into various types based on its ability to prevent ignition and its specific application. Some of the main types include:

Explosion-Proof Lights

Explosion-proof lights are designed to contain an explosion within the light fixture itself. Furthermore, they feature robust enclosures to withstand internal explosions and prevent any ignition from escaping. Explosion-proof lighting solutions are most suitable for locations where the potential for explosion is constant and immediate.

Flameproof Lighting

Flameproof lighting fixtures are similar to explosion-proof lights, but they are typically rated for less hazardous environments. They can withstand external flames but do not necessarily contain an explosion inside the light fixture. Flameproof hazard lights are commonly used in places where ignitable gases and vapours exist, but the risk of immediate explosion is lower.

Intrinsically Safe Lights

Intrinsically safe lighting is designed to limit electrical energy to a level below the threshold that could cause ignition. Moreover, these fixtures ensure that no part of the light system will generate enough energy to ignite an explosive atmosphere. Intrinsically-safe lights are ideal for environments with low concentrations of flammable substances.

LED Hazardous Area Lights

Hazardous area LED lighting is a type of lighting fixture that uses light-emitting diodes (LEDs) as the light source. LED lights are more energy-efficient, have an extended lifespan, and are highly resistant to vibration and shock, making them ideal for use in hazardous locations.

Portable Hazardous Area Lights

Portable hazardous lighting are lightweight and mobile light fittings that are typically used for temporary workspaces or maintenance tasks. However, they are safe to use in hazardous zones and include handheld torches, work lights, and portable floodlights.

Common Applications for Hazardous Area Lights in Different Sectors

ATEX lights find versatile applications across multiple sectors, including:

Oil & Gas Industry: An oil and gas industry frequently involves environments that are rich in flammable gases and liquids. Hazardous area lighting equipment are used on drilling platforms, refineries, and storage facilities to ensure safe operations.

Chemical Plants: Chemical processing facilities handle volatile compounds that can be easily ignited. Hazardous lighting solutions are critical for both indoor and outdoor applications, from production units to storage areas.

Food & Grain Handling Facilities: The presence of combustible dust is a significant risk factor in food and grain processing plants. Hazard lights prevent explosions that can result from dust accumulation, ensuring worker safety.

Final Thoughts

Hazardous area lights are a critical component of safety in industries prone to explosive atmospheres. With stringent safety standards and various types of lighting solutions available, it’s essential to select the right lighting fixtures based on the specific hazards and area classifications. Investing in the right lighting fixture can help businesses protect workers and equipment while maintaining the required visibility in hazardous environments.