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PRIMA PAGINĂ ECOTERRA NUMĂRUL 14(4)/2017


Ecoterra, 2017, 14(4):1-9
AIRSPACE ACTIVITIES IN SUPPORT OF ENVIRONMENTAL TASKS
ACTIVITATILE AEROSPATIALE IN SPRIJINUL PROBLEMELOR DE MEDIU

Dumitru-Dorin Prunariu
Romanian Space Agency, Bucharest, Romania
Ildiko Tulbure
University „1 Decembrie 1918”, Alba Iulia, Romania

Airspace activities opened new possibilities by air traffic regarding developments in different human activity fields, especially on the human mobility side. Anyway environmental impacts of air traffic may be local or global, temporary or long-lasting. Manufacturing and operating aircraft demand materials, energy and resources. Disposal of old aircraft generates waste that must be recycled or sent to landfill. Emissions created by burning jet fuel cause air pollution and, over decades, climate change. The International Air Transport Association (IATA) has targeted the stabilisation of net carbon emissions because of aviation industry by 2020, with a long-term goal of 50% reduction by 2050 compared to 2005. This is anyway a difficult challenge because of the fact, that passenger traffic will probably increase in the future and connected to this, fuel consumption will increase as well. As a result, it is stringent that initiatives are starting to reduce emissions from commercial aviation with the goal of shaping sustainable aviation. This means that aerospace engineering must bring efficient solutions to improve its environmental performance by making progress in the design and operation of modern aircraft, by implementing the vision of sustainable aviation, approaching this goal by technology assessment as well as by its tool, the Life-Cycle Assessment (LCA). The SESAR 2020 approach of Single European Sky ATM Research Programme is prioritising research for improving Europe’s Air Traffic Management (ATM), so that steps for reducing environmental pollution will be made by delivering safer and cleaner air travel.  


Ecoterra, 2017, 14(4):10-14
EVALUATING THE EXPERIENCES WITH REAL FIRE LOAD. CASE STUDIES IN HUNGARY
EVALUAREA EXPERIENTELOR CU INCARCATURI REALE DE FOC. STUDII DE CAZ IN UNGARIA

Éva Lublóy, Olivér Czoboly, Viktor Hlavička
Budapest University of Technology and Economics, Department of Construction Materials and Technologies, Budapest, Hungary

The initiation and the development of fire are strongly influenced by the choice of construction materials. In addition their mechanical properties, their behaviour in elevated temperature is also of high importance. Present paper deals with the effects of fire attack on concrete of fire attack in concrete structures in Hungary. Material and structural behaviour is analysed at high temperatures, which, based on practical observations, could reach even 800°C in some cases. The fire cases of an industrial hall (2014), of the Athletic Hall of the University of Physical Education in Budapest (2015) and of two types of slab-interjoists systems (with concrete as well as brick interjoists) are summarized in our paper. By the analysis of these fire attacks important information can be obtained that can be used in subsequent fire safety design.


Ecoterra, 2017, 14(4):15-22
INDUSTRIAL SAFETY IN EXPLOSIVE WORK ENVIRONMENT VIEW FOR HUNGARY
SIGURANTA IN MEDIILE INDUSTRIALE CU POTENTIAL EXPLOZIV, SITUATIA IN UNGARIA

Lajos Kiraly
National University of Public Service, Doctoral School of Military Science, Budapest, Hungary
Agoston Restas
Institute of Disaster Management, National University of Public Service, Budapest, Hungary

To work safely in the chemical industry, it is necessary to ensure an appropriate work environment (including a fire protection system) that complies with the requirements for the used hazardous substances and also, to make the internal regulations and work instructions ready. This is especially applicable in case of operations performed with explosive materials - creating a safe work environment with potentially explosive substances. To determine a potentially explosive work environment, there is a calculation method fixed in the standards, which is partly passed on the objective judgment of the expert, a professional. Once the potentially explosive work environment is determined, the requirements for used equipment, machines and the conditions of working - depending on the zone classification - are clearly defined in standards and legal regulations. It also shows the importance of the topic, that the cost of work (including the cost of certified machines and equipment) in a potentially explosive work environment is multiple if we compare it with working in normal and standard work conditions.


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