GOST 51032-97 Group F 39 STATE STANDARD OF THE RUSSIAN FEDERATION Building Materials Test Method for Flame Propagation Building materials Spread flame test method of introducing Date 01.01.1997 1. Developed by the State Central Scientific-Research and Development Institute of the experimental complex issues of building structures and facilities of VA Kucherenko (CNIISK im.Kucherenko) State Research Centre for Construction "(SRC" Building "), the All-Russian Research Institute for Fire Defense ( VNIIPO) Russian Interior Ministry with the participation of the Moscow Institute of Fire Safety of Russia made by the Office of standardization, technical regulation and certification of the Ministry of Construction of Russia 2. Adopted and put into effect the decision of the Ministry of Construction of Russia from 27.12.1996 № 18-93 was 3. GOST 30444-97 "Construction materials. Test Method for Flame Propagation", promulgated by Decree State Construction Committee of Russia from 20.03.98 N 18-21, recognized as having the same force with GOST 51032-97 in the Russian Federation in connection with complete authenticity of their content. Introduction This standard was developed based on the draft standard ISO / ICP 9239.2, "Major tests - Reaction to fire - the flame for a horizontal surface floor coverings under the influence of radiative heat source of ignition." Section 6 - 8 of this standard authentic relevant sections of the draft standard ISO / ICP 9239.2. 1 Scope This standard specifies the test method for flame spread on materials of the surface layers of structural floors and roofs, as well as their classification into groups of flame propagation. This standard applies to all homogeneous and layered combustible building materials used in the surface layers of designs floors and roofs. 2 Normative references in this standard references to the following standards: GOST 12.1.005-88 SSBT. General hygiene requirements for working zone air GOST 12.1.019-79 SSBT. Electrical safety. General requirements and range of protection GOST 3044-84 thermoelectric converters. The nominal static conversion characteristic GOST 18124-95 Asbestos cement sheets flat. GOST 30244-94 Material construction. Test methods for flammability ST SEV 383-87 Fire safety in construction. Terms and Definitions 3 Definitions, symbols and abbreviations in this Standard with the terms and definitions of ST SEV 383, as well as the following terms and definitions. Ignition time - time from start to flame ignition source to the sample prior to ignition. Flame spread - the spread of flames burning on the surface of the sample as a result of exposure under this standard. The length of flame propagation (L) - the maximum damage to the sample surface as a result of the spread of flame burning. Exhibited surface - the surface of the sample exposed to radiant heat flux and flame from the source of ignition when tested for flame spread. Surface heat flux (PPTP) - radiant heat flux acting on a unit surface of the sample. The critical surface density of heat flow (KPPTP) - the heat flux at which stops the spread of flames. 4 Main provisions The method consists in determining the critical surface heat flux, whose value sets the length of flame propagation over the sample as a result of exposure to heat flow on the surface. 5 Classification of building materials for groups of flame propagation 5.1 Combustible construction materials (GOST 30244), depending on the size of KPPTP divided into four groups of flame propagation: WP1, WP2, RP3, WP4 (Table 1). Table 1: Group Critical surface spread of flame heat flux, kW / m WP1 WP2 WP4 RP3 11.0 or more from 8.0, but less than 11.0 from 5.0, but less than 8.0 less than 5,0 6 Samples for testing 6.1 For testing 5 samples are made of material 1100 x 250 mm. For anisotropic materials are produced two sets of samples (eg, a duck and basis). 6.2 Samples for the standard test is made in conjunction with non-combustible base. Method of attachment to the base material must match that used in the real world. As a non-combustible foundations should use asbestos sheets in accordance with GOST 18124 thickness 10 or 12 mm. The thickness of the sample with non-combustible base must not exceed 60 mm. In cases where the technical documentation does not use non-flammable material on the substrate, samples were prepared with the base and mount the appropriate actual application conditions. 6.3 Roofing mastic, mastic and floor coverings should be applied on a basis in accordance with the technical documentation, but not less than four layers, with the flow of material when applied on the basis of each layer must be consistent with the technical documentation. Samples of flooring used in paints, should be made with these coated in four layers. 6.4 Samples conditioned at a temperature (20 ± 5) ° C and relative humidity (65 ± 5)% at least 72 hours, 7 Equipment Testing 7.1 Setup for testing flame propagation is shown in Figure 1. The installation consists of the following main parts: 1) test chamber with a chimney and hoods, and 2) a radiant heat flux (radiation panel), and 3) ignition source (gas burner), 4) the sample holder and device for introducing the holder in a test chamber ( platform). Installation equipped with devices for recording and measuring the temperature in the test chamber and the chimney, the magnitude of the surface density of heat flow, air flow velocity in the chimney. 7.2 test chamber and the flue (see Figure 1) is made from sheet steel with a thickness of 1.5 to 2 mm veneer inside non-combustible insulating material with a minimum thickness of 10 mm. The front wall of the chamber door equipped with window of heat-resistant glass. Viewing Window must be capable of monitoring the entire sample surface. 7.3 The chimney is connected to the chamber through the opening. Above the chimney install exhaust ventilation hood. Performance exhaust fan must be at least 0.5 cubic meters per second. 7.4 Radiation panel has the following dimensions: length 450 ........................................( ± 10) mm, width .......................................( 300 ± 10) mm. Electrical power panel radiation shall be not less than 8 kW. The angle of the radiation panel (Figure 2) to the horizontal plane should be (30 ± 5) °. 7.5
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