Method to Investigate Influence of Inhibitory and Phlegmatizing Agents on Ignitability and Explosibility of Coal Dust

Abiev, Zaur A.; Родионов, В. А.; Парамонов, Г. П.; Chernobay, V. I.

doi:10.25018/0236-1493-2018-5-0-26-34

Cited by 11 publications

(8 citation statements)

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“…The availability of free radicals, which are considered the active centers of the chain reaction of methane explosion, is necessary for the entire process of explosive transition. Some free radicals, such as OH, H, O, CH 3 , HO 2 , CHO, are especially important not only for the explosion process, but also for the explosion suppression (inhibition) [38][39][40].…”

Section: Discussionmentioning

confidence: 99%

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

2022

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A review of the existing optoelectron monitoring devices revealed that the design of optoelectron detectors of the mine atmosphere does not sufficiently take into account the factor of external optical interference. This includes any extraneous source of thermal emission: a source of artificial lighting or enterprises. As a consequence, the optoelectron detectors -based safety systems currently installed at mining sites are not able to ensure properly the detection of the ignition source in the presence of optical interference. Thus, it is necessary to determine the working spectral wavelength ranges from methane and coal dust explosions. The article presents the results of experimental research devoted to the methane-air mixture and coal dust explosion spectral analysis by means of the photoelectric method. The ignition of a methane-air mixture of stoichiometric concentration (9.5%) and coal dust of size characterized by the dispersion of 63–94 microns and concentration of 200 g/m3 was carried out in a 20 L spherical chamber with an initial temperature in the setup of 18–22 °C at atmospheric pressure. Then, photometry of the explosion light flux was conducted on a photoelectric unit. Operating spectral wavelength ranges from methane and coal dust explosions were determined. For the methane-air mixture, it is advisable to use the spectral regions at the maximum emission of 390 and 900 nm. The spectrum section at the maximum emission of 620 nm was sufficient for dust-air mixture. It enabled us to select the wavelength ranges for automatic explosion suppression systems’ launching references. This will exclude false triggering of the explosion suppression system from other radiation sources. The research results will help to improve the decision-making credibility of the device in its direct design. The results will be used in further research to design noise-resistant optical flame detection sensors with a high response rate.

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Section: Discussionmentioning

confidence: 99%

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

2022

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“…There have been many incidents or accidents that have occurred as a result of not recognizing the hazards and risks related to work or activities in the workplace. This Hazard Identification, Risk Assessment, and Determining Control (HIRADC) program was implemented to overcome this problem [7,[11][12][13]. This program is a prevention program against incidents.…”

Section: Methodsmentioning

confidence: 99%

“…In industrial world there is the term Occupational Health and Safety, Occupational Health and Safety are all activities to guarantee and protect the health and safety of workers through efforts to prevent work accidents and occupational diseases [3][4][5]. Occupational Health and Safety aims to prevent accidents and work-related illnesses, provide protection to production sources so as to increase efficiency and productivity [6,7,8]. Occupational Health and Safety is an important element that must be owned by every company.…”

Section: Introductionmentioning

confidence: 99%

Implementation of a risk-based OHS management system at IMC mining company

Skripnik

Savelev²,

Kaverzneva³

et al. 2023

E3S Web of Conf.

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IMC mining company produces gold and silver. In mining operations that are carried out every day in the workplace, there must be dangers and risks. All these hazards are more related to the transport systems and transport used in the mining process. International mining company (IMC) underground mines definitely have operations division jobs with a high level of risk against work accidents, for example, maintenance of transport installations and the systems. Therefore, it is important to identify hazards, risk assessments, and determine the type of risk control in the section where work accidents are found. Hazard Identification and Risk Assessment Determining Control is a prevention program against fatal incidents. Risk Management at IMC is based on the Hazard Identification and Risk Assessment Determining Control (HIRADC) methodology which focuses on managing mining safety risks. This article aims to find out what the potential hazards and risks are contained in the work of the engineering and transport of underground mining division as well as provide preventive measures to reduce these risks.

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“…Liquid glass solutions 1 to 7% do not yield good results when treating brown coal. Application of liquid nitrogen is short-term during extinguishing endogenous fire, which is accompanied with temperature drop inside the block and strong deoxidation that results in more powerful new fire after a while [42,[45][46][47][48].…”

Section: Analysis Of Existing Antipyrogens For Brown Coalmentioning

confidence: 99%

“…It should be noted that the most intensive coal self-ignition was observed at coal moisture approx. 2 to 4% [32,35,42,50].…”

Section: Analysis Of Existing Antipyrogens For Brown Coalmentioning

confidence: 99%

Korkinsk Brown Coal Open Pit as a Case Study of Endogenous Fires

Argimbaev

Drebenstedt

2021

IJE

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Abrupt termination of the coal open pit operation is complicated in many cases by endogenous fires that not only cause significant damage to property but also worsen sanitation and hygienic conditions for human life in nearby settlements, as well as those for fauna and flora. T herefore, the purpose of the research was to prevent endogenous fires at Korkinsk brown coal open pit. In this connection, we used an analytical method to process the statistical data obtained from observations. The laboratory method included the study of coal samples for moisture exchange intensity by creating conditions with relative humidity up to 97 %, temperature up to plus 50°С and air speed up to 0.5 l/minute. Dependencies were determined for fire occurrence frequency, relative humidity, and average temperature of the air upon the time of day, the intensity of moisture evaporation and initial coal humidity on equilibrium co al humidity as well as the intensity of moisture absorption and equilibrium coal humidity upon initial humidity in different temperature periods. An environmentally friendly solution was created that featured good adhesion to the materials being coated, fire and explosion resistance. T he results obtained make it possible to understand the causes and methods of fighting endogenous fires.

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Method to Investigate Influence of Inhibitory and Phlegmatizing Agents on Ignitability and Explosibility of Coal Dust

Cited by 11 publications

References 0 publications

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures

Implementation of a risk-based OHS management system at IMC mining company

Korkinsk Brown Coal Open Pit as a Case Study of Endogenous Fires

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