International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Research on charging a radioisotope density meter (Endress + Hauser AG, Sweden) with ionizing radiation source of cesium-137 types GCs7.021.1, GC 7.012.8 and calibrating radioisotope densitometers on stands with liquid simulators based on mixtures of bromoform and ethyl alcohol. Calibrated radioisotope densitometers were used to determine the density of the pulp emulsion in the technological line of the State Enterprise «Navoi Mining and Metallurgical Combine» (Bessopan industrial site, Zarafshan sity, Republic of Uzbekistan). The paper presents studies on the development of a method for calibrating a radioisotope level meter (Berthold Technologies GmbH & Co. KG) under the conditions of the presence of natural radionuclides in the composition of gas condensate and powdered polyethylene intermediate product at the gas production enterprise of the JV «Uz-Kor Gas Chemical», «Ustyurt Gas Chemical Complex» (Kirk-kyz settlement, Republic of Karakalpakstan).

The competition for applied electronics has been organized for 3 years by the National Academy of Music “Vasil Levski” with the cooperation of the trading company “Elimex”. In the first year it took place only in Veliko Tarnovo, in the second was held except in Veliko Tarnovo and in our faculties in Shumen and Dolna Mitropoliya. This year we have 6 races, including representatives from the BBU, Gabrovo and Varna. Each year the quality of the participants is also improved.

An overview of the emergence and development of nuclear weapons has been made since its creation to the present day. Described are the attempts and consequences of using this weapon. What are the accumulated capacities in the world and what is their prospect for mankind? Described are the parameters of the current nuclear abatement agreements.

The article reviews the environment, radiation transformations and how they affect plants, animals and humans. A theoretical overview of the task is done. Results of measurements of the presence of radioactive isotopes in various non-living and living sites in the region of the main source of water in Veliko Tarnovo – “Yovkovtsi” dam lake and some of the obtained spectrograms are presented.

All nuclear power plants in a 1000 km radius of Bulgaria have been napped. Huir power output the number of reactors and type indicated, as well as the fuel usefl and the storage of the processed fuel. An efficiency ingnity was conducted as well as political inporteence and local safety.

After the Second World War sharply increased testing of nuclear weapons. In making nuclear blast separate radioactive particles and rays isotopes that have an impact on man and nature. Despite the ban still the world are carried out illegal nuclear tests.Observations on the state of the radiation background in Bulgaria are carried out in parallel in two ways. In view of the uncertain international situation it is necessary to strictly observe radiation protection measures and strengthen control.