Research on the Safety and Security Distance of Above-Ground Liquefied Gas Storage Tanks and Dispensers

Many countries lack clear legal requirements on the distance between buildings and petrol station facilities. The regulations in force directly determine the petrol station facilities’ required distance to buildings, and such distances are considered relevant for newly designed and reconstructed buildings. Public buildings must be located no closer than 60 m to the above-ground liquefied gas tanks and liquid gas dispensers. Still, based on engineering calculations and the applied technical measures, it is possible to determine a safe distance for buildings that are constructed, extended and reconstructed, to which superstructures are added or whose utilisation method changes. The paper presents the results of calculations devoted to determining a safe distance between public buildings and LPG filling station facilities, using selected analytical models. The analyses were carried out for the LPG gas system commonly used in petrol stations, consisting of two gas storage tanks of 4.85 m3 capacity each, and a dispenser. It is legitimate to eliminate the obligation to observe the 60 m distance between LPG filling stations and public buildings and the mandatory distance of 60 m between liquefied gas dispensers and public buildings is not justified in light of the implemented requirements to use various protections at self-service liquefied gas filling stands.

Decarbonized LNG: Creating a path to sustainable Arctic development

One of the most urgent issues of the global energy complex is its decarbonization. But it is impossible to make such a transition overnight; therefore, a transitional fuel is needed, such as gas. Natural gas has the lowest carbon emissions rate of all hydrocarbons fuels, it is vastly deposited and due to development of LNG technologies can be transported almost everywhere. The Russian Arctic zone is excellent for LNG production, as there are huge gas reserves concentrated there, the climate allows an optimal LNG production and there is a convenient logistics route. LNG production in this region must be as harmless as possible and with the lowest CO2 emissions to preserve a sensitive environment. Decarbonized LNG is a liquefied gas with lowered amount of CO2 emissions from production to consumption, or they were compensated by offset loans. This concept is quite new, but it allows gas to build a bridge to low-carbon future. This article explores all the ways of building carbon-neutral LNG value chain in Arctic and suggests the optimal way of providing sustainable development in region’s energy complex.

Evolution of gas security in Bulgaria - case study

The aim of this paper is to present the complex issues of gas security in Bulgaria, a country which used to be entirely dependent on raw material delivered from the Russian Federation. Bulgaria has no large raw material resources on its own territory and has tried for several years to diversify the sources and routes of natural gas supply, both through the construction of gas pipelines as well as through the import of liquefied gas. Azerbaijan may become important gas importer to Bulgaria and interconnector linking Bulgaria with Greece may singificantly impact the diversification process. Russia remains an important importer of raw material to Bulgaria and will keep this position in the foreseeable future. Russia is trying to maintain its position on the Bulgarian gas market through further infrastructure investments, regardless of the diversification processes forced by EU regulations that liberalise the gas market.

EVALUATION OF THE AUTOMATIC MOBIL MILK RECEIVING UNIT OF DOMESTIC PRODUCTION

The purpose of the research – to conduct experimental testing aimed at evaluating of the automatic mobil milk receiving unit of domestic production. Research methods. During the testing of the automatic mobil milk receiving unit of domestic production the quality of the technological process was determined using the methods given in DSTU 7435: 2013 and DSTU 3662: 2018, operational-technological and economic evaluation was carried out according to DSTU 8424: 2015 and DSTU 4397: 2005, safety and ergonomics were determined according to DSTU EN ISO 12100: 2014. Research results. According to the results of experimental testing, it was found that the automatic mobil milk collection unit АППМ-1 at the appropriate level measures the amount of delivered milk with an error of 0,9 %, which meets the requirements of the TU (up to 3,0 %). The water temperature for washing equipment is 58 °C, which meets the requirements of TU (50-60 °C). The system of washing of surfaces of the automatic point which are in contact with milk provides high-quality washing of the equipment, existence of an intestinal stick (coli-titer) makes > 1,0 that meets requirements of TU (not less than 1,0). The period of acceptance, transportation and delivery of milk to the processing plant for one working cycle of procurement is 3,3 hours, which meets the requirements of the TU (not more than 4 hours). Productivity of the automatic point of reception of АППМ-1 milk during performance of technological process on reception, registration and transportation of milk in a radius of 30 km makes 363 l / h, for a radius of transportation in 50 km - 330 l / h, 100 km - 280 l / h, that meets the requirements of TU (275-360 l / h). Specific fuel consumption (liquefied gas) is 7,4 liters per ton of milk collected. Conclusions. The first experimental testing of the domestic automatic milk collection point APPM-1 showed that the equipment satisfactorily performs the specified technological process of acceptance, registration, short-term storage of milk obtained in private farms and transporting it to processing enterprises, according to the quality of the process meets the requirements of technical conditions. The automatic milk collection point АППМ-1 is characterized by a high technical level and can be used in Ukraine.