Photoluminescent Safety Signs and Labels
Studies of the 9/11 World Trade Center events prompted New York, Connecticut and California municipalities to require photoluminescent markings in their commercial buildings to aid in emergency evacuations. More recently, NFPA code changes ensure photoluminescent marking for exit stair pathways. To support these changes, Graphic Products, Inc. has released an illustrated, easy-to-understand 12 page white paper, “Introduction to Photoluminescent Labels, Signs & Path Markings” for facility managers and contractors. Created to help keep facilities safe and compliant with local, state, national, and international regulations, this guide is available free from Graphic Products. What does photoluminescent technology provide? A way to clearly mark exit pathways and provide emergency information that will be visible in smoky conditions and when lights fail. Since no power is required, photoluminescent labels and signs provide a reliable and safe approach to identify hazards, provide directions and display critical information during an emergency. How does it work? Technology involves mixing light-storing crystals into labeling materials. Strontium oxide aluminate crystals provide a stronger light and last longer than zinc sulfide crystals, which are used in glow in the dark toys. Three key factors impact the strength and duration of the luminance:
- The type of light. Fluorescent and halogen lights charge more effectively than incandescent light. Although sunlight is also effective, UV rays deteriorate these signs and labels.
- Light intensity. The greater the intensity, the faster the charging rate.
- Illumination charge time. Typical recharge times range from 30-60 minutes.
- Door frames
- Stairways and handrails
- Fire extinguishers