Rapprochement of overhead lines with airfields and heliports

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 2. Sewerage of electricity

Overhead power lines with voltage above 1 kV. Rapprochement of overhead lines with airfields and heliports

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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2.5.291. The placement of overhead lines in the areas of airfields, heliports and airways is carried out in accordance with the requirements of building codes and regulations for airfields and the planning and development of urban and rural settlements.

2.5.292. In accordance with the Manual for the Operation of Civil Aerodromes of the Russian Federation (REGA RF), in order to ensure the safety of aircraft flights, overhead lines located on the aerodrome territory and on the ground within the airways and violating or worsening flight safety conditions, as well as supports 100 m high and more regardless of their location, they should have daytime markings (coloration) and light protection.

Marking and light protection of overhead lines should be carried out by enterprises and organizations that build and operate them.

The need and nature of marking and light protection of the designed overhead line supports are determined in each specific case by the relevant civil aviation authorities when agreeing on the construction.

Daytime marking and light protection of overhead line supports is carried out in accordance with the REGA RF. In this case, the following conditions must be observed:

1) day marking should have two marking colors: red (orange) and white. Supports up to 100 m high are marked from the top point by 1/3 of the height with horizontal stripes 0,5-6 m wide, alternating in color. The number of stripes must be at least three, and the extreme stripes are painted red (orange). On the aerodrome territory of international airports and air routes of international importance, the supports are marked with horizontal stripes of the same width alternating in color from top to bottom.

Supports with a height of more than 100 m are marked from top to bottom with stripes alternating in color, with a width determined by REGA RF, but not more than 30 m;

2) to light the supports, obstruction lights should be used, which are installed on the uppermost part (point) and below every 45 m. The distances between the intermediate tiers, as a rule, should be the same. Poles located inside built-up areas are light-shielded from top to bottom up to a height of 45 m above the average building height;

3) at the upper points of the supports, two lights (main and backup) are installed, operating simultaneously or one at a time if there is a device for automatically switching on the backup light when the main one fails. The standby fire automatic switch must operate in such a way that, in the event of its failure, both obstruction lights remain on;

4) obstruction lights must be installed so that they can be observed from all directions within the range from the zenith to 5º below the horizon;

5) obstruction lights must be of constant red emission with a luminous intensity in all directions of at least 10 cd.

For light protection of supports located outside the areas of airfields and not having extraneous lights around them, white lights operating in a flashing mode can be used. The strength of the barrage should be at least 10 cd, and the frequency of flashes should be at least 60 1/min.

When installing several flashing lights on a support, simultaneous flashes must be ensured;

6) means of light protection of airfield obstacles, according to the conditions of power supply, belong to category I consumers, and their power supply must be carried out through separate lines connected to substations.

The lines must be provided with emergency (backup) power.

It is recommended to provide ATS;

7) turning on and off the light barrier of obstacles in the area of the aerodrome is carried out by the owners of the overhead line and the control tower of the aerodrome according to the specified mode of operation. In the event of a failure of the automatic devices for turning on the obstruction lights, provision should be made for the possibility of turning on the obstruction lights manually;

8) to ensure convenient and safe maintenance, platforms should be provided at the places where signal lights and equipment are located, as well as stairs to access these platforms.

For these purposes, platforms and ladders provided on the overhead line supports should be used.

See other articles Section Rules for the installation of electrical installations (PUE).

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