Appendix A
CATENARY OBSTRUCTION LIGHTING Day Protection = 270,000 cd White Light Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light Flash Sequence = Middle | Top | Bottom Top - Middle Bottom 20% Variance Allowed
TOP CATENARY TOWER 60 ЕРМ IN THE MIDDLE OF THE CROSSING Middle Bottom 55 ГРМ - 60 гРМ - 20% Variance Allowed = L-857 (Flashing White Light) = 360° Visibility (Catenary Light 60 FPM) - (3) Flashheads per level for 360° coverage) = L-866 (Flashing White Light) = 180° Visibility (RIGHT) (Catenary Light 60 FPM) = L-885 (Flashing Red Light) = 180° Visibility (LEFT) (Catenary Light 60 FPM) Figure A-4. Catenary Obstruction Lighting А-5
Appendix A
CATENARY LIGHTED MARKERS Used in Conjunction with Unlighted Markers Required for transmission lines 69 kV or greater Recognizable from a minimum distance of 4,000 ft (1,219 m) Wire markers may be staggered over the catenary to enable better wind load distribution 200 ft (61 m)
- Violation Area (Above 200 ft (61 m) AGL) 25 ft (8 m) max distance unless line design sag requirements are greater Unlighted Marker Ball Lighted Marker Ball Extensive catenary wires: min 36-inch- (91-cm-) diameter markers; less extensive catenary wires: 20-inch- (51-cm-) or 12-inch-
(30.48-cm-) diameter markers.
Evenly spaced along the wire at approximately 200-ft (61-m) intervals.
Lighted and unlighted markers should be a solid color, such as aviation orange, white or yellow.
Lighted and unlighted markers should alternate aviation orange, white, yellow with aviation orange markers positioned at each end.
If less than four markers (lighted or unlighted) are on the line, all markers should be aviation orange.
Figure A-5. Catenary Lighted Markers A-6
Appendix A
RED OBSTRUCTION LIGHT
STANDARDS (FAA STYLE A) Day Protection = Aviation Orange / White Paint Night Protection = 2,000 cd Red Light (32 cd Red Side lights for A1) 1,901 ft (579 m) - 2,100 ft (640 m) Paint Bands (Twenty-One) 1,701 ft (518 m) - 1,900 ft (579 m) Paint Bands (Nineteen) Above 1,750 ft - 2,200 ft (522 m - 671 m) 1,501 ft (547 m) - 1,700 ft (518 m) Paint Bands (Seventeen) Above 1,400 ft - 1,750 ft 1,301 ft (396 m) - 1,500 ft (547 m) Paint Bands (Fifteen) (427 m - 533 m) 1,101 ft (335 m) - 1,300 ft (396 m) Paint Bands (Thirteen) Above 1,050 ft - 1,400 ft (320 m - 427 m) 901 ft (274 m) - 1,100 ft (335 m) Paint Bands (Eleven) 701 ft (213 m) - 900 ft (274 m) Above 700 ft - 1,050 ft Paint Bands (Nine) (213 m - 320 m)
10.5 ft (3 m) - 700 ft (213 m) Paint Bands (Seven) Above 350 ft - 700 ft (107 m - 213 m) Two or more L-810 lights configured to flash in sync with L-864 Above 150 ft - 350 ft (46 m - 107 m) 0 ft - 150 ft (0 m - 46 m) VIN AO A1 A2 A3 A4 A5 A6 PAINT BANDS = 1-864 (Flashing Red Light) Configured to flash at a rate of 30 fpm (+ 3 fpm) = L-810 (Single Light) Configured to flash in sync with L-864 = L-810 (Double Light) Figure A-6. Red Obstruction Light Standards A-7
Appendix A
MEDIUM-INTENSITY WHITE OBSTRUCTION LIGHT
STANDARDS (FAA STYLE D) Day / Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd White Light (Painting of tower is typically not required) One-half but not lower than 200 it (61 m) Above 350 ft - 700 ft (107 m - 213 m) Above 200 ft - 350 ft (61 m - 107 m) D1 D2 = L-865 (Flashing White Light) Figure A-7. Medium-Intensity White Obstruction Light Standards A-8
Appendix A
HIGH-INTENSITY WHITE OBSTRUCTION LIGHT
STANDARDS (FAA STYLE B) STRUCTURE WITH APPURTENANCE 40 ft (12 m) OR LESS Day Protection = 270,000 cd White Light Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd White Light
• e Above 1,750 ft - 2,200 ft (533 m - 671 m) Appurtenance Above 1,400 ft - 1,750 ft 40 ft (12 m) or less (427 m - 533 m) Above 1,050 ft - 1,400 ft (320 m - 427 m) Above 700 ft - 1,050 ft (213 m - 320 m) For towers 700 ft (213 m) and below, see the appropriate medium-intensity FAA style sheet ВЗ B4 B5 B6 = L-856 (Flashing White Light) (3 flash heads required per level for 360° coverage) Figure A-8. High-Intensity White Obstruction Light Standards-Structures With Appurtenance 40 Feet or Less A-9
Appendix A
HIGH-INTENSITY WHITE OBSTRUCTION LIGHT
STANDARDS (FAA STYLE C) STRUCTURE WITH APPURTENANCE GREATER THAN 40 ft (12 m) Day Protection = 270,000 cd White Light Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd White Light Above 1,750 ft - 2,200 ft (533 m - 671 m) Appurtenance exceeding Above 1,400 ft - 1,750 ft 40 ft (12 m) above the structure (427 m - 533 m) Above 1,050 ft - 1,400 ft (320 m - 427 m) Above 700 ft - 1,050 ft (213 m - 320 m) For towers 700 ft (213 m) and below, see the appropriate medium-intensity FAA style sheet СЗ C4 C5 C6 = L-856 (Flashing White Light) (3 flash heads required per level for 360° coverage) =L-865 (Flashing White Light) Figure A-9. High-Intensity Obstruction Lighting Standards-Structures With Appurtenance Over 40 Feet High A-10
Appendix A
MEDIUM-INTENSITY DUAL OBSTRUCTION LIGHT
STANDARDS (FAA STYLE E) Day / Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light and 32 cd side lights (Painting of tower is typically not required) One-half but not lower than 200 ft (61 m) Above 350 ft - 700 ft Two or more L-810 lights (107 m - 213 m) configured to flash in sync with L-864 Above 200 ft - 350 ft (61 m - 107 m) E1 E2 = L-864 / L-865 (Flashing Dual [Red / White] Light L-864 configured to flash at a rate of 30 fpm (+ 3 fpm)
• =L-810 (Single Light) Configured to flash in sync with L-864 Figure A-10. Medium-Intensity Dual Obstruction Lighting Standards A-11
Appendix A
HIGH-INTENSITY DUAL OBSTRUCTION LIGHT
STANDARDS (FAA STYLE F) STRUCTURE WITH APPURTENANCE GREATER THAN 40 ft (12 m) Day Protection = 270,000 cd White Light Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light Above 1,750 ft - 2,200 ft (533 m - 671 m) Above 1,400 ft - 1,750 ft Appurtenance exceeding (427 m - 533 m) 40 ft (12 m) above the structure Above 1,050 ft - 1,400 ft (320 m - 427 m) Above 700 ft - 1,050 ft (213 m - 320 m) For towers 700 ft (213 m) and below, see the appropriate medium-intensity FAA style sheet F3 F4 F5 F6 = 1-856 (Flashing White Light) = L-864 / L-865 (Flashing Dual [Red / White] Light) (3 flash heads required per level for 360° coverage) L-864 configured to flash at a rate of 30 fpm (+ 3 fpm) = L-864 (Flashing Red Light) Configured to flash at a rate of 30 fpm (+ 3 fpm) Figure A-11. High-Intensity Dual Obstruction Lighting Standards-Structures With Appurtenance Over 40 Feet High A-12
Appendix A
HIGH-INTENSITY DUAL OBSTRUCTION LIGHT
STANDARDS (FAA STYLE G) STRUCTURE WITH APPURTENANCE 40 ft (12 m) OR LESS Day Protection = 270,000 cd White Light Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light Above 1,750 ft - 2,200 ft (533 m - 671 m) Appurtenance Above 1,400 ft - 1,750 ft 40 ft. (12 m) or less (427 m - 533 m) Above 1,050 ft - 1,400 ft (320 m - 427 m) Above 700 ft - 1,050 ft (213 m - 320 m) For towers 700 ft (213 m) and below, see the appropriate medium-intensity FAA style sheet G3 G4 G5 G6 = L-856 (Flashing White Light) (3 flash heads required per level for 360° coverage) = L-864 (Flashing Red Light) Configured to flash at a rate of 30 fpm (+ 3 fpm) Figure A-12. High-Intensity Dual Obstruction Lighting Standards-Structures With Appurtenance 40 Feet or Less A-13
Appendix A
DUAL LIGHTING POLES, TOWERS, LIGHTING AND PAINTING
AND SIMILAR STRUCTURES OF CHIMNEYS Day Protection = 270,000 cd White Light Day / Twilight Protection = Aviation Orange / White Paint Twilight Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light Night Protection = 2,000 cd Red Light As low as 20 ft (6 m) Appurtenance over 40 ft (12 m)
• Above 700 ft (213 m) but not more than 1,050 ft (320 m) Above 700 ft (213 m) but not more than 1,050 ft (320 m) =L-864 (Flashing Red Light) =L-856 (Flashing White Light) = L-864 / L-865 (Flashing Dual [Red / White] Light Figure A-13. Painting and/or Dual Lighting of Chimneys, Poles, Towers, and Similar Structures A-14
Appendix A
MEDIUM-INTENSITY LIGHTING
ESTABLISHING THE LOCATION OF TOP BEACONS Day Protection = 20,000 cd White Light Night Protection = 2,000 cd Red Light Top of lightning rod (less than seven-eighth in. (2.2 cm) diameter) Top of Communications Antenna Top of Antenna Support - Top of Structure Structure 10 ft (3 m) Max Overall AGL height when determining light levels Towers shown are above 350 ft (107 m) but less than 700 ft (213 m) Obstruction light should be mounted above all appurtenances Obstruction lights can be mounted within excluding anything less than seven-eighth in. (2.2 cm) diameter 10 ft (3 m) from the overall height = L-864 (Flashing Red Light) = L-865 (Flashing White Light) = L-864 / L-865 (Flashing Dual Light) Figure A-14. Medium-Intensity Lighting-Establishing the Location of Top Beacons A-15
Appendix A
PAINTING AND LIGHTING OF WATER TOWER, STORAGE TANKS,
AND SIMILAR STRUCTURES Day Protection = Aviation Orange / White Paint Night Protection = 2,000 cd Red Light and 32 cd Red Steady-Burning Side Lights Above 150 ft (45 m) but not more than 350 ft (108 m) Above 150 ft (45 m) but not more than 350 ft (108 m) = 1-864 (Flashing Red Light) =L-810 (Steady-Burning Red Light) Figure A-15. Painting and Lighting of Water Towers, Storage Tanks, and Similar Structures A-16