Recently, LinkedIn’s Facility Managers Group swapped workplace horror stories in an illuminating discussion titled, “Stories of Neglect: What have you seen as a Facilities Manager that has been a result of poor maintenance or complete lack(there)of?” We noticed that a recurring theme in the responses was mass shortages of lighting due to failing fixtures that went unreported. These shortages can pose a huge danger for litigation and human life in general.
In these cases, those responsible for facility-wide inspections were often contractors who were unfamiliar with lighting terminology and standards – cleaning professionals, for example. Since many of the LED lights supplied by LED Waves are designed specifically for commercial and industrial buildings, this was of particular interest to us. How can lighting be effectively monitored by untrained personnel?
With filament-based lighting technology – halogen/incandescent – failure is pretty straightforward; the bulb suddenly burns out after a few thousand hours and stays dark until a maintenance worker gets around to replacing it. With gas-based, ballasted lighting technologies, however, failure can be trickier to diagnose.
By industry standards, a luminaire is considered failed once it produces less than 70% of its initial output (thus the “L70″ references you may see on lighting literature). The ballasted lighting technologies most commonly seen in large buildings – fluorescent, HID, sodium, metal halide – decrease in lumen output exponentially shortly after being installed. (Fluorescent lights are especially bad, strobing and changing color noticeably as they near the end of their useful lives.)
Like the above lighting technologies, LED lights decrease their lumen output over time. Unlike the above, however, they don’t hit the dreaded 70% mark for 30,000 to 50,000 hours of operation – so inspections by qualified personnel, using proper equipment, can be scheduled fewer and farther between.
As LED lighting and controls get smarter, these inspections may fall out of human jurisdiction altogether in our lifetime – freeing up time for facility managers to prevent other stories of neglect.