Risk classes

Learn about the risk classes

Risk Classe: ATPV and HAF

In any industrial park or work environment, it is essential to carry out Risk Analysis. This procedure, widely used by the Occupational Health and Safety areas, defines the risks inherent in the activities and environment under study.

In the electricity area, the Incident Energy Calculation is part of the Risk Analysis. This procedure consists of technically analyzing the electrical equipment to define what energy would be released in the event of an electrical arc. The result of the risk calculation is obtained in cal / cm².

It is not by chance that the ATPV index of the tissue is also obtained in cal / cm². In this test, carried out in accordance with ASTM F 1959 or IEC 61482-1-1 Method A, the amount of heat that the fabric can withstand or the protective factor of the uniform is basically obtained. With this reasoning, we can define the Risk Classification as ATPV-based subdivisions of the fabric, according to the following:

The most used classification in the world is Risk 2. All fabrics used by Santanense guarantee protection against Risk 2 with one layer. Protection for Risk 3 and 4 can be developed by overlapping layers of fabric, with 2 layers normally protecting against Risk 3; and with 3 layers the Risk 4.

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