Abstract:The application of the method for assessing the level of safety at work starts with a document that contains the cover page, the description of the company (name, location, core business, organizational chart etc.), description of the work system, a detailed list of its components, and a brief description of the assessment method. It continues with a Microsoft Excel document, which represents the actual application of the method and, finally, there is another document presenting conclusions, proposals, and prioritizations, which leads to the execution of the Prevention and Protection Plan. The present paper approaches the issue of developing the Microsoft Excel document, an essential part of the method for assessing the level of safety at work. The document is divided into a variable number of worksheets, showing the risk categories of general, specific, and management.

Selective Laser Melting is an Additive Manufacturing technology based on 3D scanning of successive layers of metal powder. Three distinct values were determined for each of the three technological parameters (P – the power of the laser, Vscan – scanning speed and te – exposure time), therefore resulting nine sets for the “layer by layer” processing. After SLM processing, the samples were sandblasted simply (1S), sandblasted successively (2S), or left unsandblasted (NS). The roughness (Ra) of the outer surfaces was measured for all the samples, and there was found a decrease in the height of the micro-irregularities and the uniformization of the roughness profile along with the intensification of the sandblasting process. For some samples, there were found uncertainties regarding the accuracy of the experimental results’ values, determined by the presence of the adherent particles identified by the SEM analysis of the outer surfaces. The number and size of these particles have affected the manner in which the samples were placed on the roughness tester’s plate, as well as the accuracy of the measurements. Under these conditions, the tip of the roughness tester’s diamond stylus has recorded the specific values of the surface’s secondary profile, which is affected by the existence of the formations adhering to the primary profile of the SLM processed samples.

No abstract

No abstract

The carabiners are vital components of fall protection systems used in a variety of areas, such as: caving, construction, arboriculture, industry, rescue / evacuation operations etc. Therefore, these metallic links play an important role in preventing work accidents wich are related with fall from heights. During carabiners manufacturing, the material selection occupies an important place among the obtaining steps, because there are a high number of mechanical and chemical properties that must be possessed by the final product, in order to provide adequate user safety. This paper aims to present the manufacturing process and the main properties of the materials used for carabiners, as well as the specific advantages and disadvantages of each type of material.