2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 4. Mamalis Intl. Symp. / Advanced Manufacturing
| Editors: | F. Kongoli, A. G. Mamalis, K. Hokamoto |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 352 pages |
| ISBN: | 978-1-987820-88-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Modern Protective Systems for Mitigating Explosions
Nikoloz Chikhradze1; Edgar Mataradze2; Theodore Krauthammer3; Mikheil Chikhradze4;1G. TSULUKIDZE MINING INSTITUTE, Tbilisi, Georgia; 2LEPL GRIGOL TSULUKIDZE MINING INSTITUTE, Tbilisi, Georgia; 3DIRECTOR, CENTER FOR INFRASTRUCTURE PROTECTION AND PHYSICAL SECURITY UNIVERSITY OF FLORIDA, Geinesville, United States; 4GEORGIAN TECHNICAL UNIVERSITY, Tbilisi, Georgia;
Type of Paper: Regular
Id Paper: 144
Topic: 48
Abstract:
The major disadvantages of the existing automatic systems of blast suppression are: the long length of response; an inadequate discharge of the blast absorbing agent required for reducing overpressure and temperature to an acceptable value; and the lack of reliability of a blast identification device in difficult conditions of underground openings, especially under long-term operation.
Basic design requirements for the protective system are: short response time from the moment of explosion to the system activation; high reliability to rule out false activation and the possibility of failure to detect an explosion; high reduction of shock wave overpressures; capacity to extinguish secondary blasts and ensuing fires— system should remain active for a few minutes; it shall not interfere in the normal functioning of the tunnel and have an ability to adapt to the tunnel shape and size; the system components shall be strong enough to withstand all loads and high shock; low cost of production, installation, and performance monitoring.
Subject to these requirements, a new blast protection system has been developed by the G. Tsulukidze Mining Institute and Center for Infrastructure Protection and Physical Security (CIPPS) within the frames of the NATO SPS programme, Shota Rustaveli National Science Foundation (SRNSF) and International Science and Technology Center (ISTC) [1, 2, 3].
The system consists of the following three sub-systems: i) a shock wave high-speed suppression section, in which high pressure is generated upon the initiation of the pyrotechnic gas generator; ii) a suppression section with a long-term action, in which high pressure is obtained by using a pump; iii) a system activating device. The system contains a wireless device for the detection of explosions. This paper presents the results of the testing of the Automatic Protecting System from explosion in an underground structure.
Keywords:
Defense; Explosives; Shock-waves loading;References:
[1] E. Mataradze, N. Chikhradze, T. Krauthammer, GE P 2017, 6632 B[2] Edgar Mataradze, Nikoloz Chikhradze,2, Irakli Akhvlediani, Nika Bochorishvili1 and Ted Krauthammer, http://iopscience.iop.org/article/10.1088/1755-1315/44/5/052012/pdf
[3] N. Chikhradze, E. Mataradze, M. Chikhradze, T. Krauthammer,IAPS, ISIEMS, Sixteenth International Symposium on the Interaction of the Effects of Munition with Structures, Destin, Florida USA, 9-13 November 2015