LED Lighting: Maximizing the Reliability, Safety, and Efficiency of Light Fixtures in Hazardous Environments

LIGHT-EMITTING DIODE (LED) luminaires provide compelling benefits, such as long-term cost savings, safety advantages through longer life and durability, inherently lower maintenance costs, and instant restrike capability when compared with legacy lamp types. The proven lower total cost of ownership and increased safety for LEDs have been a driving force in the trend of LED luminaires replacing traditional light sources in process industries. As with any new technology, challenges exist in designing and maintaining an optimal system to withstand the intended application and environmental conditions. Common challenges and considerations include luminaire placement, the intensity/dispersion/quality of light, thermal management, material selection and redundant safety, and operating systems. We will examine the best practices and common misconceptions in the selection and application of LED luminaires, focusing on harsh and hazardous locations. The probability of success in maximizing the reliability, safety, and efficiency of LED technology in such applications is enhanced by utilizing proven design principles and methods. The selection methods and design principles will be explained using actual application examples and case studies.