The presence of harnesses that a person puts on is a characteristic feature of individual fall protection systems. Depending on the purpose of the system, these may be, for example, full body safety harnesses, sit harnesses, work positioning belts, mountaineering harnesses, rescue harnesses and others. The role of such harnesses is an important and responsible one, because their performance often decides about their user's life. Therefore, before they are launched on the market and approved for use, it is necessary to control their parameters. The paper presents the most important protective parameters, such as: resistance to static and dynamic loads, behavior in dynamic conditions, the effect of the harness on the user's body in the suspended state and the pressure of the harness on the surface of the anthropomorphic dummy. The currently used methods of testing these parameters and the research equipment have been characterized. The presented methods include both standardized and own methods developed at Central Institute for Labour Protection – National Research Institute. The importance of the individual parameters from the point of view of the harness user safety is discussed.

DOI: 10.54215/BP.2023.05.10.Baszczynski

The use of nanomaterials may pose a risk to human health. For risk management, it is important to have quantitative information on the concentration of nano-object aerosols in the surrounding environment. Due to the high price of laboratory-class devices, such as condensation counters or electrometric counters, they are used only for periodic measurements of the number concentration of nano-objects. Currently, there is a growing need for devices capable of monitoring the concentration of nano-object aerosols that are cheap enough to be installed where nanomaterials are used or aerosols can be spontaneously generated. The article presents methods and technical solutions for direct measurement of parameters characteristic of nano-objects workplaces in the air. One of the solutions is the prototype developed by the authors within the scope of the 5^th stage of the National Programme “Improvement of safety and working conditions” a low-cost nano-object aerosol meter. The results of tests verifying the correct operation of the prototype of this meter in the work environment related to the area of nanotechnology are presented.

DOI: 10.54215/BP.2023.05.11.Jankowski