Premises with increased danger: classification of objects according to the risks of electric shock

Industrial facilities and shopping centers cannot function without electrical equipment. Because of this, there is a need to classify rooms with increased danger, which allows for appropriate control. Safety standards, rules for handling electrical equipment and actions in the event of dangerous situations must be studied by specialists working in production.

Main categories of risks

Contact with electricity threatens a person with serious consequences, therefore, especially dangerous rooms must be isolated and protected. Only qualified personnel can enter them to carry out their direct work duties.

Classification of premises according to the danger of electric shock is being created based on the following factors:

1. Indoor humidity indicators.
2. Chemical activity that can affect insulation.
3. Temperature created by climatic equipment and maintained around the clock.
4. Concentration in the air of dust and fine particles capable of conducting electric current.

The classification allows you to take into account all the important factors and risks that may arise during the operation of the premises. Also, great importance should be given to the quality of insulation, since it is necessary to eliminate all kinds of electric current leaks to live parts.

Supervisory authorities should conduct inspections for compliance with all electrical safety rules and regulations. This makes it possible to exclude various factors and problems during the operation of the facility.

Factors affecting electrical safety

In rooms with increased danger, it is always necessary to take into account the high humidity and the possibility of pipe breaks. Humidity leads to the formation of condensation, which accumulates on conductive elements and leads to serious problems, insulation damage, etc.

When calculating the level of safety, this indicator is very important. Condensation can build up on walls, floors and equipment. Gradually, it will penetrate into electrical devices. All this leads to great danger.

There are also other factors affecting the assignment of an electrical safety class to a room:

1. High dust content on site. It can be varied, it all depends on what the company produces. Dust can settle on electrical equipment and create conductive paths, leading to unpredictable consequences and problems. If it settles on the equipment case, it can cause overheating and subsequent fire.
2. High temperatures lead to premature aging of the insulation and damage to it. As a result, serious accidents and breakdowns can occur.
3. In chemical production, the air contains a large amount of reagents, reagent spills occur somewhere, etc. As a result, the insulating properties of the equipment are impaired. Gradual oxidation also causes conductive lines to appear. This creates a danger for the employees of the company, who are in contact with the equipment every day.

To eliminate all this, you need regular checks and measures to implement additional security.

There are measures that really help: all conductive elements must be equipped with fire protection, it is imperative to install an innovative ventilation system. The floor and all surfaces with which a person is constantly in contact should be covered with a dielectric material.

Object classification

Even if all the rules and regulations are observed, insulating materials will gradually lose their operational properties. As a result, the risk of an emergency will increase every day, especially if there are a lot of metal elements in the room, and the floor is made of conductive material. All this creates and increases the risks of electrical safety violations.

In modern technical standards for the maintenance of various manufacturing enterprises there are three classes of hazard, by which the premises are divided. The assignment of a hazard class occurs only after an examination by the supervisory authorities. For this, all indicators are measured, the results are documented and provided to the owner of the workshop or production facility.

Every worker who carries out his professional activities in the enterprise must be familiar with safety precautions. All this is done in accordance with modern standards.

Good examples of non-hazardous premises are office buildings, apartments, houses, etc. Laboratories and production facilities equipped with insulated floors can also fall into this category. Presented category of premises characterized by the following indicators:

1. Decreased air humidity. When measuring, the indicators should not exceed 75%. Such indicators can be achieved through good year-round heating and ventilation systems.
2. Non-conductive floors. It is enough to lay a dielectric material. It is necessary to exclude metal, earth and reinforced concrete surfaces on which workers will walk. Currently, there are a large number of categories of different dielectric floor coverings.

Rooms belonging to this safety class must be free from high temperatures, dampness, various admixtures of chemical and conductive particles in the air.

To classify a room as a high-risk class, you need to conduct an examination and examination. Humidity plays one of the main roles in the procedure for assigning a hazard class. It is difficult to deal with it even with good ventilation and heating. The second hazard class is assigned to structures in which:

1. Relative humidity is over 75%.
2. High content of conductive dust in the air, which forms again even during operation of the ventilation system.
3. The presence of conductive floor coverings in the room.
4. Temperature conditions in test chambers and laboratories exceed 350 ° C.

Regulatory documents regulate the temperature and humidity conditions in such premises. Today, this category can easily be attributed to workshops, repair facilities, workshops, that is, most of the production facilities. Regular inspections and examinations make it possible to exclude a variety of emergencies in them.

Particularly dangerous premises in terms of electrical safety are extremely rare today. The owners of such buildings are trying in every way to reduce humidity and purify the air, as well as use high-quality dielectric materials. The problem is that the degree of danger for the worker is incredibly high, so he cannot carry out his activities in such conditions. Premises of this type characterized by the following indicators:

1. The relative humidity reaches almost 100%. With this indicator, almost all open surfaces are covered with condensation.
2. There are a lot of chemicals in the air. Due to the high humidity, fungi and mold begin to develop. With the combination of these two factors, insulation is destroyed almost instantly.

Premises in this category can be found in galvanizing and testing shops, where such conditions are specially created for carrying out various checks and chemical reactions.

Electrical equipment located outdoors also belongs to this hazard class, since it is constantly exposed to temperature extremes and the influence of precipitation.

Specialist recommendations

Safety at a production facility is one of the most important aspects, so you need to strive to reduce the hazard class. Also, do not forget that the owner of the enterprise will incur losses if he has to pay extra to staff for work in hazardous conditions.

After an object has been assigned a particular hazard category, you need to take the following measures:

1. Conduct familiarization of personnel with safety precautions.
2. Create safe working conditions (lay dielectric floor coverings, regularly renew insulation and carry out inspections).
3. Reduce moisture and dust in the air. It is very easy to do this, you just need to purchase innovative equipment.

Hazard categories reflect the risks of emergencies. This is a very important indicator that must be constantly taken into account. Also, do not forget that a regular examination carried out by supervisory authorities may reveal additional shortcomings, due to which it will not be possible to avoid a fine.