Reliability in
Obstruction
lighting

Obstruction lighting for stack

The number of lights per level depends on diameter of the stack: 3 lights are required if the diameter is less than 6 meters, 4 lights if the diameter is between 6 and 30 meters, 6 lights if the diameter is between 30 and 60 meters and 8 lights if it is above 60 meters

Stack without red and white stripes 45 to 105 meters high, lights operating day and night

3 or more dual color medium intensity OFP-120-RW close to the top of the stack

Dual color medium intensity in accordance with FAA L-865/L-864 and/or ICAO medium intensity type A & B (red at night, white during the day)

3 NAVILITE ICAO low intensity type B or FAA L-810(F) at intermediate level (red at night, off the day)

Control cabinet and photocell at bottom

Stack with red and white stripes. Lights operating only at night

3 or more red medium intensity OFP-120-R of OFC-RI close to the top of the stack (only for stack 45m to 105m high)

Red medium intensity in accordance with FAA L-864 and/or ICAO medium intensity type B (red at night, off during the day)

3 or more NAVILITE ICAO low intensity type B or FAA L-810(F) at intermediate level (or if the stack is less than 45 meters high 3 or more low intensity type A or L-810 below the top) red at night, off the day

Control cabinet and photocell at bottom