Recurring Heatwaves Outside. Continuous Process Heat Inside.
Since mid-June 2026, France has experienced three separate nationwide heatwave periods:
14 days in June + 16 days in July + 22 days from late July into August
= 52 cumulative heatwave days
This does not mean France remained under uninterrupted heatwave conditions for 52 consecutive days. The figure represents the combined duration of three separate heatwave episodes, with short periods of relief between them.
For petrochemical heaters, boilers, steel mills, glass plants, cement facilities and other high-temperature operations, however, process-generated heat continues even when outdoor temperatures temporarily ease.
The real thermal challenge extends beyond the weather forecast:
Ambient Heat + Process Heat + Luminaire-Generated Heat
= Actual Operating Thermal Load
When lighting equipment operates for extended periods beyond its rated ambient-temperature range, light output, electronic component life and overall operational reliability may be affected.
High-temperature lighting selection should therefore consider more than wattage and initial lumen output:
▪ Actual temperature at the installation point
▪ Radiant heat from furnaces, boilers and process piping
▪ Rated ambient-temperature range and thermal design
▪ Hazardous-area certification and installation conditions
▪ Reliability during continuous industrial operation
THT-EX high-temperature explosion-proof lighting solutions are engineered for demanding environments where elevated ambient temperatures, hazardous-area requirements and operational continuity must all be considered.
Record Heat Outside. Process Heat Inside.
Is your hazardous-area lighting rated for the real operating temperature?
Contact THT-EX for professional lighting selection based on actual site temperature, hazardous-area classification and installation conditions.
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