1. Environmental protection.

With the release of asphalt mix for the reconstruction of the access road to the pumping station "Komsomolskaya" asphalt plant operation would inevitably associated with the release into the environment of pollutants.

The sources of emissions of pollutants are in asphalt mixing plants - tumble dryer, hot elevator crash, including the system itself, and Dust and Gas Cleaning the chimney, bitumen production - from gases given off when heated bitumen and additives, aggregates of mineral dust in the feed tank filling , and feeding powder in the dosing device.

The main areas of asphalt mixing plants that emit pollutants (dust, ash, carbon monoxide, nitrogen oxide, sulfur, etc.) are in asphalt mixing plants - places suction of stone materials, labyrinth seals drying drum, smoke box, flues and smoke exhauster system cleaning, conveyor lines and power supply units, weighing hoppers, elevators, screens, conveying mineral powder, in the halls of bitumen - pits, bitumen heating aggregates, bitumen dispenser units supplementation.

The list above the sources that emit pollutants, points to the need to pay them during the operation of asphalt plants increased attention, especially to those places and areas, which are mentioned above.

Found that in the preparation of asphalt mixtures fugitive emissions (if not taken appropriate measures to reduce them) are on average 17.5 kg. 1 t. hot asphalt mix.

The initial concentration of pollutants in the work of asphalt plants on average, (g./m³):

• inorganic dust - 23.5;

• sulfur dioxide (when operating on gas not included) - 0.016;

• carbon monoxide -0.0008;

• nitrogen oxides - 0.00007;

Particularly high concentrations of dust, sulfur dioxide and carbon monoxide, the full reduction in the concentration of which is the responsibility of the administration of "KalmDorUpr" in charge of (on balance) consists of asphalt concrete plant.

Against the spread of harmful dust and its impact on the environment in areas of dust and paper crushing - screening plants, unloading and handling of components of vehicles, delivering stone materials, installed wind protecting billboards or awnings. In the summer, held periodic processing of protective equipment by wetting (irrigation).

Particular attention is paid to good condition aspirative equipment (primary and secondary treatment systems), timely and quality maintenance cleaning systems.

The technological cycle of production of asphalt mixes are also involved and other road machinery (bulldozers, wheel loaders, crane installation, welding machines, portable compressors, etc.).

The main components harmful to the environment during the operation of road construction machinery, are emissions contain carbon monoxide and lead.

State standards (State Standard 17.2.2.03-11) restrictions on the content of harmful substances in exhaust gases, especially gasoline.

Since carbon monoxide in the exhaust gas engines shall not exceed (PDK) - 20 mlg/m³, and lead oxide - 0.01 mlg/m³.

In order for the operation of vehicles to meet these requirements must be constantly maintained engine fuel injection equipment in good condition, and verify the operation of engines on the content of the exhaust gases of these impurities is carried out at every second regular maintenance (TO-2) and after completion of maintenance .

In order to avoid contamination of soil and water waste oils, acids, alkalis, and other various sediment at each base at each point where the run petrol and lubricants work, arranged special collections from sumps and traps to drain waste oil, etc. waste.