Alliance. Sevastopol, Ukraine

Calculation of categories of premises and buildings of industrial and warehouse use in explosion and fire hazard is made on the basis of the normative document NPB 105-03 and benefits to NPB 105-95. These documents set the calculation method (definition) the categories of buildings and premises, resulting in the assignment premises of categories (A, B, B1-B4, G, D), and buildings (A, B, C, D, e). In the course of the calculation is performed by sequentially scanning the affiliation of a room or building to a certain category, from highest (A) to lowest (D).
To calculate you need the following data: floor area, height (from floor to bottom chords of trusses ceiling), the material of the floor covering, the presence or absence of the systems of emergency ventilation, composition, quantity and the location of the fire load (what type of explosive, inflammable and combustible substances exist in the premises), a description of the process. These data can be obtained in the survey areas by our experts or can be prepared by the Customer (we developed the easy to fill form technical specifications for the calculation of categories of premises and buildings).
Information about categories of buildings and premises explosion and fire hazard (fire category) affect the adoption of technological, architectural, ventilation, water supply solutions and solutions to ensure fire safety. Starting from the category of the building, decisions on the limits of fire resistance of building structures, emergency ventilation systems, installing automatic extinguishing systems, the organization of the fire compartments and the construction of fire barriers, etc. All of the above is directly reflected as the safety of people and property and the final cost of the construction or reconstruction of the Object.
Based on considerable experience of carrying out calculations, our experts can offer You different options for optimization of the determination of category of the premises or the Building as a whole, with the aim of reducing further the cost of design and construction (or reconstruction).
With calculations of categories of buildings and premises explosion and fire hazard (NPB 105-03) involves the definition of classes zones on PUE. The main regulatory document for the definition of classes zones are the Rules of the device of electroinstallations (PUE). This document defines the following classes of zones: explosive (In-I,-Ia,-IB,-G,-II, - IIA) and fire (P-I, P-II, P-IIA, P-III). Class zone affect execution of electrical installation working in this area and in the zones associated with this area.