Waste incineration is one of the paths of implementation of the European Union’s strategy aimed at reducing the amount of waste deposited in landfills. Along with the development of methods for processing and recycling various wastes, new waste is generated. One example is waste from polyethylene terephthalate (PET) bottles washed during their recycling. In this paper, physical and chemical properties of such wastes are analyzed in terms of their use in the power industry. This research is part of the search for new sources and new technologies for energy production. The study has taken into account the energy properties of waste intended for combustion (calorific value, water content, chemical composition, volatile substances, combustible and non-flammable content). Thermogravimetric analysis of the material tested indicated that the waste is a good source of energy. It was found that the elemental composition (C, H, N, S, O) of the waste investigated is similar to that for biomass materials, and the calorific value of 13.2 MJ/kg qualifies the waste for combustion, provided that its initial moisture is reduced, for example, for co-combustion in the cement industry. Another possibility is mixing the waste with other kinds of waste to obtain a new fuel with more satisfactory parameters.
In the last years and also due to today's economic situation and crises in the world, each organization is looking for a continuous improvement of processes and business performance. The major task of each production organization or services is the saving of money, which is lost because of scrap, long cycle times, wrong process maps and inventory differences. The goal of this article is to describe the implementation of Six Sigma in a production organization focusing on the production of interior parts for the automotive industry. During the summer time, there was delamination between thermoplastic foil and plastic substrate, which caused increasing of scrap, additional substandard works as well as the risk of quality complaints from customer. Six Sigma and DMAIC cycle were used to find root causes and to implement permanent corrective actions to remove this kind of problem from production.
Reliability and quality are strongly linked between each other although people are often confused and consider these to be the same. Quality is defined as the ability to satisfy requirements that customers had determined or expected. If an organization manages to fulfill preconditions and requirements, it has a potential that customers will continue to use its products while buying new ones. Reliability can be named as an indicator expressing the probability that a product will perform the function it was made for and for a period specified in given operating conditions. In this work, we have focused on monitoring the specific parameters in two types of grain harvesters in operating conditions. Keywords: grain harvester, quality, organization, reliability Abstrakt Spoľahlivosť a kvalita majú medzi sebou silnú väzbu. Ľudia sa často mýlia a považujú ich za to isté. Kvalitu definujeme ako schopnosť uspokojiť požiadavky, ktoré si určili zákazníci alebo ich očakávali. Ak sa podarí predpoklady a požiadavky naplniť, organizácia má potenciál, že zákazník bude pokračovať v používaní jej výrobkov a zároveň kúpe nových. Spoľahlivosť môžeme nazvať ako ukazovateľ vyjadrujúci pravdepodobnosť, že daný výrobok bude vykonávať požadovanú funkciu, pre ktorú bol vyhotovený, po dobu stanovenú v daných prevádzkových podmienkach. V práci sme sa zaoberali sledovaním konkrétnych parametrov u dvoch typov obilných kombajnov v prevádzkových podmienkach.
Risk is virtually present everywhere around us. Nowadays, there is an increasing focus on safety at work; therefore, the organizations that want to be successful in the market try to eliminate risk factors to a minimum to avoid or prevent the health hazard of employees, damages to property or the environment. The work is focused on the risk assessment of a selected device, which is the most risky workplace according to the organization where the research was conducted. In the practical part, we became familiar with the equipment for welding and a thorough analysis of the current state of safety by a complex method was done. Consequently, corrective actions to reduce risk to an acceptable level were proposed. After that, we reassessed the risks of complex method, and the point method was used to verify the effectiveness of proposed remedial measures.
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