In recent years, with the development of port facilities and the expansion of seaside parks, the number of lighting facilities installed near coasts where salt damage is expected is increasing. There are no guidelines showing sufficient measures for lighting fixtures and lighting poles (lighting poles include "arms"; the same applies below) installed in these areas where salt damage is expected, and problems caused by corrosion due to salt damage are increasing, making it necessary to take measures beyond general rust prevention measures, such as surface treatment and material designation.

Corrosion prevention for lighting fixtures and lighting poles requires careful consideration of corrosive gases in heavy industrial areas, snow-melting agents used in winter, and antifreeze agents, but this guide only considers salt damage resistance in coastal areas.

1. The surface treatment for the materials of the lighting fixtures and lighting poles to be used should be selected appropriately taking into consideration the properties of the paint shown in Table 1.
2. The materials and surface treatments for lighting fixtures and lighting poles to be used in areas expected to be affected by salt damage should be selected from Tables 2 and 3 depending on the level of salt damage in the area in which they will be installed.
3. The topcoat paints shown in Tables 2 and 3 are used for painting the exterior of enclosed lighting fixtures and the exterior of lighting poles.
4. The surface preparation has a large influence on the ability of topcoat paint to make the most of its properties. To obtain properties corresponding to the salt damage resistance levels of the paints shown in Tables 2 and 3, it is necessary to carry out surface preparation appropriate for the paint.
5. For the paints shown in Table 1, the level of salt damage resistance can be significantly affected by the film thickness and number of coats. Tables 2 and 3 list the recommended coating specifications for each material, but it is desirable for the parties involved to decide on the level of salt damage resistance required in the actual usage environment.

1. If the equipment is installed in an area adjacent to the sea, such as under an overpass where it is not exposed to rainwater, the saltwater droplets that adhere to the equipment will not be washed away by rainwater, which may accelerate corrosion. Regular cleaning should be carried out to wash away the salt.
2. Since the ground-level parts of lighting poles are prone to corrosion, it is advisable to take measures to prevent water leakage, such as by bringing the base above ground level and creating a slope.
3. Any scratches that occur during transportation, installation or use will be repaired promptly by painting.
4. Care should be taken to ensure that the concrete aggregate in the lighting pole foundation does not contain salt.

1. For open-type lighting fixtures, measures should be considered to prevent deterioration of insulation in sockets and other parts due to salt accumulation.
2. In sealed lighting fixtures, the material of the gasket for the parts that are opened and closed during maintenance such as lamp replacement and cleaning should be selected with consideration given to weather resistance.
3. In areas that are subject to salt damage and overlap with heavy industrial zones, chemical resistance must also be taken into consideration.
4. Bolts used in joints should be hot-dip galvanized bolts or SUS304 or higher.