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Today, the demolition process employing blasting operations has a demanding technological application, demonstrating that the employment of the blasting method is a suitable alternative in terms of efficiency, quality, and safety. This article describes the practical way and safety conditions of realizing the demolition process of a concrete bridge built over a width river and located in the area of a water dump and a power plant. The bridge was designed as a structure that crosses the river, continued with an acc...

Blasting operations are an essential part of underground mining activities, but the seismic waves generated during detonation may adversely affect the stability of underground mining structures such as galleries, chambers, intersections, and support systems. Repeated blasting can lead to cumulative damage, increasing the risk of degradation of both the rock mass and the installed support. This paper presents considerations regarding the assessment of the seismic effects of blasting operations on underground mining...

Starting in 1992, the Romanian mining industry underwent a restructuring process, which involved the closure of a significant number of mining perimeters. Without conducting a critical analysis of the causes that led to this extensive action and its resulting effects, it can be considered that some mining units, whose minimum geological reserves ensure exploitation for at least 10 years, could have real prospects for promoting solutions that guarantee economic efficiency, at least at the national level. In support...

Explosives are used in a wide range of industrial, military and civil applications, and their behavior under extreme temperature conditions is a key aspect for safety and reliability. The present study analyzes the influence of extreme temperatures on the stability and reactivity of explosive materials, highlighting the critical factors that can lead to degradation, changes in sensitivity or accidental triggering. In the research, experimental methods and numerical modeling were used to evaluate the thermal behavi...

This study presents a comparative analysis of the performance of three gas measurement devices used to detect toxic gases generated by the detonation of ANFO explosive. The study was conducted following the operational procedure PI-102, which complies with the requirements of the SR EN 13631-16:2005 standard for detecting and measuring toxic gases produced by explosions. The aim was to evaluate the accuracy, reliability, and consistency of the devices in monitoring key toxic gases released during detonation. The e...

The paper describes the practical solutions and safety conditions of realizing the demolition of an industrial chimney and a cooling tower located in a former thermal power plant, having in the very close vicinity several civil constructions. The chimney has a height of 208 m and consists of the outer tubular structure of reinforced concrete and as well as of the inner chimney made of refractory brick masonry. The cooling tower height was 108.0 m and the base diameter of 82.00 m. For chimney, the chosen solution o...

This research paper explores the advancement of computer simulation techniques to improve the safety, efficiency, and environmental sustainability of civil explosives in various engineering applications. The study emphasizes the critical role that computer simulations play in modeling and optimizing blasting techniques, allowing for precise predictions of explosive behavior under diverse conditions. By simulating the detonation processes and their impacts, engineers can develop safer and more efficient blasting pr...

In order to carry out the detection and examination of explosive substances both before and after their detonation, this multifunctional integrated system uses the work facilities provided by the use of: ISCAN type specialized equipment intended for the determination of threat traces based on the principle of ion mobility spectrometry; GSCAN type specialized equipment intended for the detection of explosives in bulk form and in closed containers using the principle of Raman spectrometry; the LDS800HDK specialized ...

Explosions may have severe consequences on the integrity of structural or nonstructural elements of a building. Being considered events with a low probability of occurrence, they are not considered directly in the design, except in certain special situations (accidental design situations). In the case of deliberate attacks, placing explosive devices at short distances or even attached to building elements can cause major local failures. Local failure and potential loss of load carrying capacity are dependent on lo...

Used the specialized software solution regarding to the thermochemical facilities, we can predict detonation (e.g. detonation velocity, pressure, energy, heat end temperature, etc.) and combustion (e.g. specific impulse, force, pressure, etc.) performance of energetic materials. The calculation of detonation parameters is based on the chemical equilibrium steady-state model of detonation. The equilibrium composition of detonation and combustion products is calculated by applying modified White, Johnson, and Dantzi...

DETEX Electronic Detonator made by Kirlioglu consists of an electronic circuit with communication and microprocessor and wire bridge resistance coated with explosive material. DETEX Electronic Detonator, which identity information, delay information, charge, discharge and all functions are controlled digitally, is a system consisting of all electronic circuit elements. The system consists of a communication circuit, a master control circuit with a microprocessor, a controlled charge, a discharge and an ignition ci...

The evaluation of the seismic action generated by blasting, aims to establish the connection between the levels of ground vibration with the parameters of the blasting and the characteristics of the geological environment related to the quarry. In order to assess the seismic effects on site of the mining / civil / industrial objectives within the quarry, the criterion of the oscillation speed of the soil particles was chosen, because it was considered to be the only reproducible parameter for the whole frequency r...

The paper presents the synthesis of the results of the research obtained in the development of the infrastructure for evaluating the safety of explosives for civil use in terms of friction sensitivity, using a modern BAM Friction Apparatus test equipment, FSKM-10 characterized by a high degree of technology, in order to determine the friction sensitivity of civil use explosives (assuring loads from 0.1 N to 360 N), being of the last generation and capable of meeting, at the highest level and in terms of economic e...

At national level, a series of technical regulations harmonized with European directives and norms are adopted, which present essential occupational safety and health requirements applicable to the field of explosives for civil use in various specific activities in which their use is necessary. Concerns in the field addressed in the paper, are also registered at the level of the European and international community, respectively, because a good knowledge of the concepts and the practical experience regarding the d...

Substances that have chemical energy are known under the generic name of explosives. The chemical energy resulting from the decomposition of explosive substances has constituted and will continue to be one of the main forms of energy used in many sectors of the economy as well as in the military field. The technical experience accumulated so far has demonstrated that it is very difficult for a simply characterization of the explosion. Thus, in order to achieve this it is necessary to know the thermo-chemical chara...

Photovoltaic energy systems are an important part of the systems for obtaining energy from renewable sources. Generating electricity from renewable sources is becoming more developed in most countries. The energy produced is fed into the power grid and used both for household as well for industrial. Issues related to pollution and global warming have led to more pronounced development of technologies for producing electricity from wind, solar, hydro, biomass and geothermal. Development and the continuous research ...

This paper presents a theoretical and practical approach of the evaluation concept of professional risk specific to activities of gas wells extraction and initial processing. The scientific research highlighted in this article was obtained during INSEMEX Project from The National Program for Research and Development PNCDI-CEEx. The main purpose of evaluating industrial risk is to prevent this type of risk and when there is no possibility to eliminate it, it is mandatory to reduce it up to the amount of residual ri...