Explosion proof lighting is integral for any business that operates in hazardous environments, where potentially explosive gases and vapours are present. Employees working in a hazardous environment are constantly exposed to the threat of potential explosions that may occur if safety precautions are not implemented properly.
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Therefore, it is imperative for you to understand how explosion proof lighting can benefit your business and the safety of your workers. However, it can be confusing to define what constitutes an explosion proof lighting fixture and how it differs from standard lighting fixtures. This article aims to provide a comprehensive overview on explosion proof lighting that will help you make a more informed decision for your business.
Explosion proof lighting refers to lighting fixtures that are able to contain sparks that could potentially ignite the flammable and explosive gases in the atmosphere. Therefore, explosion proof lighting does not refer to lighting equipment that are resistant to explosions but rather, the capacity to prevent external explosions from occurring in a hazardous location.
An explosion proof lighting fixture is typically encased in a thick frame that is usually made from a sturdy material like steel or aluminium. Ex proof lighting fixtures are also equipped with extremely durable lenses that can withstand harsh working conditions and prevent cracks, which can result in leaks.
Installing explosion proof lighting significantly reduces the risk of explosions by preventing the ignition of surrounding flammable gases and vapours. Furthermore, the National Electric Code (NEC) published by the National Fire Protection Association (NFPA) mandates that all lighting equipment used in hazardous locations need to be explosion proof.
Due to the robust design of explosion proof lighting fixtures, the risk of explosions and ignitions occurring are extremely low. Thus, this greatly improves the safety of employees working in hazardous locations as well.
In a standard light fixture, the bulb, contacts, wiring, and any switches are all directly exposed to the local atmosphere. The spark from a loose contact or the movement of the switch, and even the heat of the bulb can be enough to ignite a flammable atmosphere. In an explosion proof light fixture, any explosions that may occur are contained inside the fixture.
Components in a standard lighting fixture such as the bulb, wiring, contacts and switches are exposed to the atmosphere. As such, any sparks caused by the sudden change in energy inside the fixture may potentially be able to ignite the flammable gases in the atmosphere. Conversely, the components of an explosion proof lighting fixture are encased to prevent potential sparks or flames from escaping the internal housing unit.
However, this does not mean that there has to be an airtight seal around the components of an ex proof lighting fixture to prevent the flammable gases in the surrounding atmosphere from penetrating the housing unit. It just means that the explosion proof lighting fixture will be able to contain the explosion within its housing unit. This prevents the explosion from spreading outside the unit which could cause additional damage to equipment and injury to employees.
An ex proof light typically has higher durability compared to its standard lighting counterpart. As explosion proof lighting fixtures are often built with sturdier and heavier materials, they are able to withstand harsher working environments. This means that explosion proof lights will not be as easily damaged as standard lighting fixtures which makes it a better option for operations in confined spaces. Therefore, the high durability of explosion proof lighting fixtures helps to reduce maintenance and furbishing costs for your business.
Thanks to being built with a stronger frame and thicker tempered glass lenses, explosion proof lights are highly resistant to vibrations. This allows for greater mobility as the ex proof lights can be transported from one place to another by forklifts or other transport machinery without the risk of getting damaged easily. On the other hand, standard lighting fixtures are not as mobile as even the slightest bumps or movement might cause them to be damaged and malfunction. As such, explosion proof lighting fixtures are more portable than standard lights, which makes it the ideal choice for businesses that require mobile illumination for operations.
Explosion proof LED lights are more energy efficient compared to traditional lighting fixtures. An ex proof LED light consumes approximately 90 percent less energy than a standard lighting fixture. This means that explosion proof LED lights are capable of working at their original level of illumination and can last up to 100,000 hours. As such, explosion proof LED lights have longer lifespans than conventional lighting fixtures. Therefore, installing explosion proof LED lights will allow you to save on operation and production costs.
Explosion proof LED lights also emit less heat thanks to their heat saving features. This generally reduces the chances of producing sparks which means that flammable gases and vapours in hazardous locations will not be ignited.
In addition to their energy saving advantages, explosion proof LED lights do not contain toxic or harmful substances, such as mercury and lead, that are harmful to the environment. Therefore, using explosion proof LED lights instead of traditional lighting fixtures allow businesses to be eco-friendly as well.
As industrial experts, we understand the numerous benefits that explosion proof lighting can bring to your business. Therefore, we highly encourage you to incorporate the use of explosion proof lights especially if your business operates in a confined space at a hazardous location. Moreover, the low visibility and mobility of confined spaces, such as oil rigs and petrochemical plants, makes it necessary to install explosion proof lights in order to carry out maintenance and inspection.
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Equipping workers and facilities with explosion proof lighting and types of equipment is one of the top priorities when it comes to ensuring their safety in a hazardous environment. This is due to the fact that it restricts thermal and electrical energy in order to prevent ignition. This could imply controlling heat generation and buildup to avoid exceeding a dangerous substance’s ignition temperature. Maintaining voltage and current low prevents the chance of sparks in electrical energy.
This along with the equipment that is designed to withstand explosions by containing the explosion within it. Higher wattage is possible because to the development of strong, thick equipment that can resist an explosion. It’s specially designed to avoid a malfunction in electrical process equipment, whether it’s intrinsically safe or explosion proof.
Now, speaking on behalf of the work environment let’s tackle what kind of factors you need to consider when purchasing intrinsically safe and explosion proof lighting.
Employees who operate in hazardous situations, both direct and contract, have suffered fines, penalties, and even termination in a number of cases for failing to use the appropriate Class 1, Division 1 intrinsically safe lighting equipment specially rated for their work area.
Consider equipping your employees with explosion proof lighting fixtures to enhance their safety when working in low-light, hazardous areas. This is because when a light source is intrinsically safe, it indicates that it has been graded for safety for use in a potentially hazardous workplace and will not create a fire or explosion if used properly and not tampered with. Due to the high concentration of combustible gases, liquids, and dust in industrial and manufacturing facilities. In this situation, there is a risk of fire and explosion so the first thing when choosing lighting in a hazardous environment is ensuring it is indeed classified as intrinsically safe.
Use intrinsically safe fixed and portable task lighting in hazardous areas to safeguard people and property from explosions and fires. The following industries frequently benefit from intrinsically safe lighting devices:
For the following conditions, people must use fundamentally safe lighting: while operating in restricted places or when a potential confined space exists. As a result, working in the oil and gas industry can be hazardous, especially if you operate in an industrial or manufacturing environment where flammable dust and combustible fiber filings are in the air due to the fumes and gases.
After all, with today’s mobile worker, you have to ask yourself if the cost of not having an intrinsically safe flashlight is worth the cost of potentially life-threatening risks.
Typically, hazardous area lighting fixtures are rated as Class 1 Division 1, Class 1 Division 2, ATEX Zone 1, or ATEX Zone 2. This ATEX certification certifies that the equipment is safe to use in environments where explosive chemicals such as vapor, dust, gas, or fibers are present in ignitable quantities. As a result, device manufacturers must apply proper design and construction procedures to ensure that their products are safe to use in confined spaces or regions with combustible substances.
An explosion-resistant lamp, for example, is designed to prevent any explosion within it from spreading to the explosive atmosphere outside it, which may result in a secondary explosion as a result of the initial explosion. A manufacturer may achieve this by using a robust enclosure that encloses any burning gases inside. Other designs may make use of tempered glass to capture sparks, static discharges, and other potential ignition sources, preventing disastrous contact with flammable gases or vapors in the surroundings.
The acronym IP stands for Ingress Protection Rating. The Ingress Protection Rating on a piece of equipment describes the level of protection against diverse items, such as dust or water, entering the device. Using the IP Rating, users are able to choose which equipment is most suited for their environment, hence decreasing their risk.
The IP rating consists of the letters IP followed by two digits, or two digits and another letter in some circumstances. The first digit denotes the amount of ingress protection against solids or foreign objects. The first letter, for example, could indicate that an enclosure provides just modest dust protection.
The second digit denotes the amount of liquid intrusion prevention. The second digit, for example, could indicate that an enclosure protects against vertical water drops (such as light rain) and condensation.
Each numeral represents a different level of security. The level of protection increases as the numbers on the foreign object protection and liquid protection scales rise. Look at the chart for a detailed explanation of each number and the level of security it represents.
These are the top five factors to consider when purchasing intrinsically safe explosion proof lighting for use in hazardous environments. The use of explosion-proof lighting ensures the safety of your staff and others in the event of an explosion. Therefore, if you operate in a potentially dangerous environment, it is critical that you employ the proper lighting fixtures.
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