Closed Joint-Stock Company “New Impulse Technologies” …impulse-storm.com/wp-content/uploads/2014/12/EMERCOM... · 2014-12-27 · А-76 according to GOST 2084-77. Test results

Closed Joint-Stock Company “New Impulse Technologies”

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SIBERIAN AFFILIATE OF ALL-RUSSIAN SCIENTIFIC AND RESEARCH INSTITUTE

FOR FIRE DEFENSE OF THE MINISTRY OF EMERGENCY SITUATIONS OF RUSSIA

(FSI ARSRIFD MES of Russia)

Testing Laboratory

MINUTES NO. 169 of testing multifunctional powder spraying device impulse module

“IMPULSE-STORM” at two-barrel powder spraying from 20 sprayers

THE TESTS WERE CONDUCTED SPECIALY FOR STUDING PARAMETERS OF POWDER CLOUD SPREADING AND EXTINGUISHING EFFECT

ON LARGE OPEN AREAS. METHOD OF EXTINGUISHING – CROSS-EXTINGUISHING

Date April 20, 2004 Conditions on proving ground: * temperature, С0 17 * atmosphere pressure, kPa 99,9 * relative humidity, % 25 Name and characteristics of samples Multifunctional powder spraying device IP “Impulse-Storm”. Producer: Closed Joint-Stock Company “New Impulse Technologies”, ID 71985175. Test Methods Determining main space-time parameters of a powder cloud flow at powder supply by means of IP “Impulse-Storm”. According to the program of test methods. Measuring instrumentation and devices: 1. Air medium optical density sensors (30 items). 2. Interface transformers ADAM 4054 (2 items). 3. Analog data entry modules ADAM 4018(2 items). 4. Computer with characteristics: processor PIV-1800 MGertz, RAM 256 Мb, HDD 40 Gb, video card 32 Mb. (2 items). 5. Thermoelectric transformers of ТХА type according to GOST R 50431-92 with wire diameter not exceeding 0.1 мм (16 items). 6. A PC based controlling and measuring complex “Sprut”. 7. Precision scales of at least 5 g. 8. Tape-measure, 10 m. 9. Speed and wind direction measuring device. 10. Angular value measuring device. 11. Digital photo camera, two video cameras.

Devices: 1. Bars-holders securing safe fixing of optical sensors, thermoelectric transformers and special model fire centers of B class in the area of a supposed powder spraying cloud. 2. Shield-bar. 3. Special combined bar. 4. Accumulative battery 12 B, СТ-60 type (2 items). 5. Measuring slats made of wooden bar 40х40 mm 5 m long having black and white color band marking, band length 0,5 m (3 items). Spending materials: 1. “Twisted-pair” cable (250 m). 2. Gasoline А-76 according to GOST 2084-77. Test results Powder spraying from 20 sprayers was performed in the present test, powder mass came to 600 kg. According to the data received from medium optical density sensors, graphics of dependence of relative medium optical density change on time were built. According to the graphics, maximum change of relative medium optical density (D,%) and duration of fire extinguishing concentration action (Тcon, sec) were determined. The graphic shows a powder cloud in 1 and 1,5 seconds after the start of extinguishing. Horizontally and vertically – distance and height of spreading in meters.

According to the indications of thermoelectric transformers the fact of extinguishing of model fire centers was determined by means of exponential dependence received at sensor calibration, a calculation of maximum powder flow concentration was made (Рmax) based on data received of relative powder flow optical density change on a proving ground: Picture 1 – at the height of 0.25 meters. Picture 2 – at the height of 4 meters. Graphic’s vertical axis – concentration indices gram/cubic meter, horizontal axis – proving ground dimensions, on which sensors are fixed. On the table – conditions on proving ground:

* temperature, С 17 * atmosphere pressure, kPa 99,9 * relative humidity, % 25

By means of video and photo materials received a calculation of average parameters of powder flow was made:

Number of sprayers.

Distance of powder cloud spreading, L, m

Front width, G, m

Height, m Powder cloud volume, m3

20 198 38 10 20900

Result: Powder concentration exceeds many times that necessary for extinguishing. Time for powder cloud spreading does not exceed 2 seconds. Chief of SA FSI ARSRIFD MES of Russia Colonel S. Amelchugov Director of CJSC “New Impulse Technologies” V. Ivanov Senior Engineer of Department for Researching Fires and Tests Captain of Internal Service A.V.Panasko

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