The study presents general assumptions of policies related to fire protection and evacuation of public buildings. Have been defined groups of human factors that have a significant impact on the efficiency of preventive actions taken and in the event of a threat. Next, the research methodology and results of questionnaire surveys carried out in randomly selected student groups are presented. A number of management actions aimed at increasing the safety of people staying on public facilities have been identified. The article ends with conclusions from the conducted research.
The subject of the article is concern towards hydraulic systems safety improvement by elimination or/and reduction the possible mistakes which could be the reason of operator accidents and damage of the machine and surroundings. The most typical situation which could be present during hydraulic system operation and maintenance have been analysed and classified to help understand its correlation with safety. Finally each of specified danger situation during system operation and/or maintenance contents rules and warning advice to avoid safety risk.
Assurance of the supervised conditions in all processes affects directly both products and users safety and environmental influence. ISO 9001 and ISO 14001 standards in Operation point require from organisations to implement and control the planned processes by establishing processes’ criteria, assuring the supervised conditions and verifying processes’ conformity. Moreover, in Planning section it is required to plan the processes with the consideration of quality and environmental risk. Therefore research on the practical solutions of operational planning and control in the production processes are of the crucial meaning, especially from the perspective of the integrated fulfilment of the requirements. That is why the value of the paper is being constituted by the authorial methodology of identification of the key-operational criteria, including integrated risk assessment, using the computer support and being a starting point for assurance of the supervised conditions in the key-processes of high risk. The worked out methodology has been implemented in the processes of performance and completing the stirrups, which quality is of the huge influence on the work safety of the mine roadway supports in the mine workings. The aim of the analysis was to identify the operational parameters in the stirrups technological process, to estimate their meaning and to point at the key operational criteria from the point of fulfilling the quality and environmental requirements. Practical implication of the proposed methodology can be applied in case of any organisation which wants to improve the realised processes ensuring the computer supported supervised conditions.
The paper assessed the quality of educational services using the SERVQUAL. In order to use the SERVQUAL method for identification of the needs and expectations of university students from engineering courses, the statements used in the method were modified by adjusting them to key characteristics of services provided by the higher education system. The aim of the paper was to analyze gaps in expectations concerning services and the perceived level of meeting these services. The paper has a form of a case study.
Marek Šolc, Martin Kotus, Eva Grambalová, Juraj Kliment and Pavol Palfy
The quality of refractory materials plays an important role especially in high temperature processes. In case of violation of qualitative properties of refractory materials, the safety of the use of the technological equipment in which these materials are used is compromised. The requirements on the quality of refractories and their properties are now high, as their operating life should be as long as possible. The aim of the article is to point out the quality of refractory material in contact with corrosive media, to analyze the technological factors that affect the quality and safety of technological equipment. An analysis of the refractory material, as well as the analysis of the melt was performed. Subsequently, an experiment was realized, which was evaluated by macroscopic analysis and chemical analysis. After the experiments, we found that the melt had penetrated the masonry and consequently created corrosion layers in the masonry. These layers have affected the life of the material and reduced the safety of the technological equipment in which they were used.
Workers' safety in the workplace depends on the compliance of both employees and the employer with applicable regulations. The EU member states in internal law contain regulations in line with EU directives in this area. The author of this study decided to examine whether compliance by the employer with health and safety provisions is an element motivating employees to take up employment. he law applies to both employees and employers, but their content is not affected by any of the parties to the employment relationship. The purpose of the article was to answer the question whether compliance by the employer with health and safety at work rules is an element that influences the employee when making a decision about taking up employment. The method used was the diagnostic survey method and the survey tool. The research was conducted in 102 facilities-enterprises in the Silesian Voivodeship employing at least 20 employees. The respondents were employees within the meaning of the Labor Code who declared knowledge of basic regulations in the field of occupational health and safety. The unambiguous lack of impact of compliance with the health and safety at work regulations by the employer on the decision on employment was indicated by 29.3% of respondents, while 60.8% of all respondents declared such an impact. Among the surveyed employees there was a group of undecided people,
During our research, we focus on a less researched area in the development of autonomous vehicles. Automotive industry is turning more and more from conventional, internal combustion engine equipped vehicles to the electric cars. Today, electric driving is mostly limited to urban traffic, this is the area where range and refueling limits can be a real alternative. However, it is important to think of those who intend to use vehicle in longer distances, and hybrid technology can provide them a modern, environmentally conscious way of transport.
In this article, we describe the method of creating the fuel consumption influencing factors matrix, which is the starting point of our research. We studied relevant researches and based on refueling studies we created the matrix. Based on results of real tests, we determined the factor mix that are the basis of our fuel consumption prediction model. These results will be inputs of planning routes of autonomous vehicles with optimized refueling and fuel consumption.
The use of fluidized bed boilers in modern power engineering is a promising solution for clean and economically acceptable combustion of various fuels, including coal, biomass and waste, for the generation of electricity. The fluidized bed boilers are nowadays technically advanced and complex combustion facilities where all individual boiler elements are subjected to withstand continuous structural and thermal loads during their operation. Intensive loading of boiler elements can be quite easily linked with boiler operational safety and is quite often one of the main reasons for emergency shutdowns followed by necessary replacements of the damaged items. In case of industrial large-scale circulating fluidized bed boilers the frequency of unplanned shutdowns is also quite often affected by the hydrodynamics of the fluidized bed and some other parameters, such as the intensity of solids circulation, temperature, solids concentration, flue gas composition and velocity, solids accumulation and deposition, as well as the corrosion or erosion of heat transfer surfaces. The present paper briefly reports the results of authors investigation focused on the morphology and structure of some chosen elements (steel anchors) sampled from one of Polish circulating fluidized bed boilers. The anchors were degraded during boiler operation and lost their mechanical durability. In order to determine the reasons of anchors’ degradation chemical composition of the elements was determined with the use of a spark spectrometer SPECTROLAB and sample morphology was investigated with JEOL JSM-6610LV scanning microscope equipped with LaB6 cathode.
Vukić Lazić, Dušan Arsić, Milorad Rakičević, Ružica Nikolić, Milan Uhričik and Branislav Hadzima
Steels of the ARMOX class belong into a group of the fine-grained, increased strength steels, which are manufactured by the quenching and low-tempering procedure, with intensive thermo-mechanical treatment at high temperatures. Combination of the heat and mechanical treatments provides for the fine grains and exceptionally good properties of these steels, while the low-tempering enables relatively high hardness and good ballistic properties. This is why the welding of these steels can negatively affect the material properties in individual zones of the welded joint, what could lead to worsening of the material's ballistic properties, as well. The model plates were welded with the specially prescribed technology; the joints were the but-joint, corner joint and the joint with the shielding plate. In this paper are presented results obtained from the ballistic tests of the plates welded by the prescribed technology; tests consisted of shooting with three types of live ammunition at different types of the welded joints.
In a knowledge-based economy, innovation resulting from R & D activities and subsequent management of their legal safety are of particular importance. Incorrect patent law can lead to abuse in the area of innovation security on a large scale through the activities of the NPE organization (patent trolls). This phenomenon is particularly noticeable in the US while in the EU it is at a negligible level.
The aim of the article is to demonstrate and prove by using comparative literature and documents analysis of US and EU, that inappropriate law leads to violations of innovation safety through the unhampered activity of patent trolls, while a change of the law to more restrictive law is a right step to reduce the patent trolling. On the other hand, the author proves that in an area with a less liberal definition of patentability, there are no many violations of innovation safety through patent trolling.