{"id":37529,"date":"2026-10-15T08:00:00","date_gmt":"2026-10-15T07:00:00","guid":{"rendered":"https:\/\/jelproducts.nl\/?p=37529"},"modified":"2026-07-09T21:45:02","modified_gmt":"2026-07-09T20:45:02","slug":"what-are-the-light-intensity-requirements-for-safe-work-at-high-temperatures","status":"publish","type":"blog","link":"https:\/\/jelproducts.nl\/en\/blog\/wat-zijn-de-lichtsterkte-eisen-voor-veilig-werken-bij-hoge-temperaturen\/","title":{"rendered":"What are the light intensity requirements for safe work at high temperatures?"},"content":{"rendered":"

For safe work in high temperatures, lighting levels of at least 200 to 500 lux apply, depending on the task at hand. In heat-intensive environments such as steel mills, foundries and industrial ovens, higher lighting levels are necessary because heat has a direct impact on the performance of luminaires and, therefore, on visibility for employees.<\/p>\n

In this article, we address the most frequently asked questions about light intensity requirements in environments with extreme heat: from the basic principles to concrete fixture choices and maintenance tips.<\/p>\n

Which standards determine the minimum lighting intensity in industrial environments?<\/h2>\n

The NEN-EN 12464-1 and NEN EN 12464-2 are the European standards that set minimum lighting levels for workplaces indoors and outdoors. For industrial environments, these standards prescribe lighting intensities that range from 50 lux for simple storage spaces to 500 lux or more for precise work. The exact requirement depends on the task, the environment, and the associated risks.<\/p>\n

In practice, other factors also play a role. These include the presence of moving machinery, the need to quickly detect danger, or the presence of reflective material that can cause glare. In environments with high temperatures, there are additional specific requirements: the lighting must not only provide sufficient lux, but also withstand the thermal stress of the environment itself.<\/p>\n

Beyond the standards, it is advisable to base the lighting design on a thorough risk analysis of the workplace. What do employees see exactly? What actions do they perform? And what are the consequences if something is overlooked?<\/p>\n

Why do standard LED fixtures perform worse at high temperatures?<\/h2>\n

LED chips are temperature-sensitive. The higher the ambient temperature, the less efficient the LED is and the faster the light output decreases. This phenomenon is called Lumen depreciation<\/em> and operates more rapidly when luminaires are installed in environments with structurally high temperatures, such as steel mills or foundries.<\/p>\n

Standard LED fixtures are designed for ambient temperatures of approximately 40 to 50 degrees Celsius. Above that, the lifespan decreases rapidly and the light output noticeably declines. In environments where temperatures rise to 80, 100, or even 120 degrees Celsius, conventional fixtures quickly fail or simply no longer deliver the lighting intensity they promise on paper.<\/p>\n

What\u2019s more, high temperatures also affect the casing, seals and electronics. Condensation, thermal expansion and material degradation cause fixtures that are not specifically designed for extreme heat to fail more quickly. The result: higher maintenance costs, more frequent lighting failures and unsafe working conditions.<\/p>\n

For environments with persistent heat High-temperature lighting<\/a> Therefore, it is also a specialty in itself, where the choice of luminaires is crucial for both safety and business continuity.<\/p>\n

How much luxury is required for specific work tasks in heat-intensive environments?<\/h2>\n

The required lighting intensity in lux depends strongly on the nature of the work task. Furthermore, in environments with high heat, visual conditions are particularly challenging due to glare, steam, smoke, or reflection from glowing materials. Therefore, higher lux values than the normative minimum values are often necessary in practice.<\/p>\n

A global guideline per task type:<\/p>\n