# Advice 1: How to determine the class of the enterprise

The definition of a class of the enterprise , you need to calculate the width of sanitary protection zone, which is set depending on the harmfulness of production. The size of the sanitary protection zone may vary within the same class.
Instruction
1
Check out the latest edition of the Regulations and requirements for classification of enterprises depending on the harmfulness of production.
2
Rate the level of harm production using the hazard ratio of all components. It is calculated by gross weight of emissions of different substances based on the value of their average daily maximum permissible concentration. Take as the baseline the coefficient of the component, which has the highest value.
3
Select the hazard class of the enterprise (of the five) according to this value. Define the width of sanitary protection zone, on the border which will not be exceeding the maximum permissible concentrations of substances with the highest hazard ratio. For example, if you find out that the class of the enterprisefor which the calculation is performed fifth, the width of this zone should not be less than 50 meters.
4
Precise calculations, taking into account the following indicators:- emissions of each component;- average daily maximum permissible concentration of each component;- an indicator of danger (OP), taking into account the volume of emission, and the degree of toxicity of each component.
5
Please note: the higher the total volume of emissions and the toxicity of the substances, the more dangerous is the production, and he can be assigned to a class that has tighter restrictions. These restrictions usually concern the location of businesses in residential and natural areas, scheduling of employees, order of payments for harm in the workplace. For small errors in the initial calculations can only be increased the radius of the sanitary protection zone and the class of the enterprise remain the same.
6
Preoborudvat if necessary, the enterprise, if the performance risk is too high for your area. Consider the conversion of all regulations prescribed by SanPiN.

# Advice 2: How to determine the class of fire hazard

The concept of "class of fire" is different from the categories of fire", which combines the features of production. The first concept complements the value of the latter, and therefore its classification is produced separately for each element of the production system for all its components, can cause and contribute to the course of fire.
Instruction
1
Differentiate the classes of fire presented separately substances, materials, equipment, electrical wiring, structural elements of the building.
2
Remember that all substances are divided into 4 classes.
In the list of the fire elements of the 1st class take the explosive aerosols having lower concentration limit corresponding to the real threat of fire or explosion (below 15 g per cubic meter). Such substances are represented by sulphur, rosin, naphthalene, dust, peat, mill, ebony.
3
In the list of flammable substances of the 2nd class will include explosive aerosols having lower concentration limit corresponding to the real threat of fire or explosion, ranging from 15 to 65 g per cubic meter. Such substances are represented by lignin, aluminum powder, hay, flour and shale dust.
4
On the list of substances of the 3rd class of danger will get even more flammable substances. This aerogels having lower concentration limit corresponding to the real threat of fire or explosion, which is higher than 65 grams per cubic meter. The ignition temperature of aerogels — not more than 250° C. Such substances are, for example, silo, tobacco dust.
5
In the list of flammable substances of the 4th class to rank aerogels having lower concentration limit exceeding the value of 65 g per cubic meter, with the ignition temperature to 250° C. It is in particular zinc dust and sawdust.
6
Of particular importance in the concepts of "class of fire" give the classification of areas of the enterprise.
Determine the fire hazard zone as the space is outdoors, indoors, where there is constant or periodic flammable materials and substances.
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