Soil, the one of the main components of the environment, is constantly subjected to the action of pollutants existing both in air and water from rainfall and also in groundwater. Soil pollution recorded in the current stage varying degrees of contamination in relation to the demands manifested, chemical contamination occupying a preferential place being pronounced across the globe, regardless of zone. In view of the above purposes, the paper aims to highlight the impact of industrial processing of oil activity on soil quality, near a chemical plant in Constanta County.

Considering thermal environment aspects have a major impact not only on occupational health and safety (OH&S) performance but also on the productivity and satisfaction of the workers, the aim of the case study was to assess the thermal comfort of a group of 33 workers in an automotive industry company, starting with collecting data about the thermal environment from different workplaces, continuing with the analytical determination and interpretation of thermal comfort using the calculation of the Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) indices, according to provisions of the standard ISO 7730:2005, and comparing the results with the subjective perception of the workers revealed by applying individual questionnaires. The results of the study represent an important input element for establishing the preventive and protective measures for the analysed workplaces in correlation with the measures addressing other specific risks and, also, could serve as a model for extending and applying to other similar workplaces in future studies. Moreover, the mathematical model and the software instrument used for this study case could be used in further similar studies on larger groups of workers and in any industrial domain.

Continuous development of the technological processes led to the necessity of using industrial equipment/installations made of high temperature resisting materials that provide the ability to work in heavily corrosive environments. The paper analyses two fusion welding options of dissimilar welded joints between two alloys, a cobalt based and a nickel based alloy. Here in are presented the results obtained after welding the two different materials using Tungsten inert gas (TIG) and Electron beam (EBW). Based on the results obtained after micrographic and macrographic examinations, it has been concluded that the two welding processes can be successfully used at dissimilar welded joints between the two types of material.

The paper presents the researches to determine the best technologies to improve the lifetime of the corner welding. Generally it is says that the convex corner welding presents high mechanical properties because of the greater area section. The practice activity shows that in fact, because of the stress concentrators, these shapes of the welding are not the best solution. A better shape of the corner welding is the concave one that provides better results in the working conditions. To provide better results of the convex shape corner welding different recondition techniques are known. The paper is focused on fatigue testing performed on different samples realized with different beads on different working parameters. There are studied different reconditioned probes and the results are reported in fatigue curves.

Paper presents the finite element modeling for the stress and temperature as a result of the metal deposition technology. In this case, this research method is the only one that offers information because of the working condition that are total unfavourable for stress and strain gauges. By selecting the most appropriate initial condition, the output data are very close to real result. In the paper, the temperature behavior is model because its influence in structural transformation and the stress because it can cause problems in the situation of an incorrect working technology.