The new IEC 31-35 Guide to the Classification of dangerous locations (II edition) is, more than a guide, the product yielded by a long work of subcommittee 31J which, starting from indications of principle of IEC regulation EN 60079-10, has devised a precise classification method for dangerous locations in the possible presence of gases or inflammable vapors.

The proposed classification method is not, conceptually, of complex application, however the calculations to be carried out are fairly elaborate. To aid users find their way through chemical and fluid dynamic formulas, IEC offers the IEC-TEC software package with the guide. This is a software that automatically classifies locations in a particular, yet very widespread in practice, place: gas powered thermal plants.

The IEC-TEC software offers truly precious help. Even in simple circumstances, classification of dangerous places is never an ordinary evaluation. Parameters to keep in mind are, in any case, many: e.g., maximum foreseeable gas emission, the geometry of the location, natural or artificial ventilation present, presence of gas detection devices. Basically, these sort of calculations, by hand, are distinctly… dangerous. The IEC-TEC software ensures use of correct formulas and the accuracy of calculations.

Operator interface is user-friendly: it is enough to enter the dimensions of the thermal system room, the type of emission, openings size and the software will automatically calculate the expansion and the classification of the dangerous area. If doubts occur there is an exhaustive "Online Help" which, as well as explaining the software’s functions, illustrates simply the classification method proposed by the IEC 31-35 guide.
At the end of the calculations, the IEC-TEC software prints a report, which can be attached to a project’s essay, where calculation results and carried out calculation are indicated.