This paper discusses an important aspect of ensuring safety during construction work at height, as well as when installing protective elements that catch possible falling parts of the terrain, when it is adjacent to the roadway and other communication routes. The purpose of the field tests was to verify the stability of products on the terrain with the application of static and dynamic loads. The stability test was carried out during installation on different rocks and also different regions of the CIS countries. Dynamic tests simulating cargo stall at various factors, followed by researching the ways to stop the falls. Static tests were carried out using manual tension systems - tackles. Tests in the laboratory were carried out in order to determine the destructive load on the product. For this, a special test mold was made that simulated the natural conditions. All tests were carried out using anchoring devices of various sizes, as well as with different options for the installation depth and support of the anchor. During the tests, a number of features based on the design form were discovered. The results of laboratory tests are displayed in the table with data for all test samples. A comparison was made of the bearing characteristics. As a result of this work, both the positive and the negative aspects were identified, it was especially important that the question arose of the need to possess the necessary competencies for installing this type of device.

In this paper, a method of testing the dynamic strength of full body harnesses is proposed. The possibility of conducting the method in laboratory conditions is determined by testing the method while maintaining the specified conditions of low temperatures. The main attention is paid to the effect of the set temperature on the full body harnesses, when dynamic shock loads occur in user operation mode. The advantage of the developed method of dynamic testing of full body harnesses is the simplicity in bringing the test sample to the climatic parameters of operation by pre-conditioning. This makes it possible to implement dynamic testing under specified climatic conditions within mass laboratories in the chain of conformity confirmation. Pre-conditioning allows you to conduct research on the influence of climate factors on various characteristics of safety harnesses. The interaction of the binding elements with each other, previously reduced to the specified temperature parameters, is also studied. It is necessary to pay special attention to the resulting impact loads during dynamic tests, and their relationship when conditioning products at different temperature.

In the introduction of this work, the problem of the lack of test methods for personal protective equipment against falls from a height (hereinafter PPE), used in the areas associated with direct contact of PPE components with sources of elevated temperatures, is disclosed. The experience of the fire sector was adopted with fire tests for the impact of materials used in the production of PPE products in contact with an open flame. A number of tests were carried out on refractory slings for holding and positioning and the results obtained with a positive approbation of the method. The purpose of this work is to improving overall safety when working at height, to identify weak zones of protection of components of safety systems from various external factors that negatively affect them. Work was carried out and conclusions have been drawn about the application of this method on refractory slings for holding and positioning. One of the important requirements of customers of these slings in production is the resistance of materials of safety systems to the interaction of components in an environment of high temperatures. The conclusion of this work is the relevance of the application of this technique to the PPE sector, in particular to refractory slings for holding and positioning.

In the introduction of this work, three types of safety systems are considered when working at height. Hazardous factors have been identified that affect the safety of the user, depending on the components of the safety systems and their resistance to high temperatures. The purpose of this work is to improve safety in hazardous sectors of industry, construction and other types of work where increased protection of PPE components from sources of elevated temperatures is required, when working with gas and electric welding, as well as the resistance of materials to sparks from mechanical power tools. In the main part of the article, a new test methodology for refractory slings for positioning and holding was introduced, tests were carried out and the method was adjusted. The experience of the fire sector was borrowed, and in particular, the method in clause 9.8 from GOST R 53268-2009 Firefighting equipment was transferred and adapted. Fire rescue belts General technical requirements. Test methods”. The conclusions of adaptation and application of this method to other components of personal protective equipment are made.

The effect of acids on polyamide ropes was studied. The goal is to improve the safety of users performing the work at heights and using polyamide ropes or ropes with a low stretch core in their activities. Series of the experiments and calculations were carried out to determine the destruction of polyamide ropes subjected to chemical exposure considering the process development over time. Oxalic, formic, hydrofluoric, and citric acids are involved in the tests. They are more often found in everyday life as part of the detergents, so there is a high probability that the listed acids will get on the ropes. The time of their exposure to a section of the test sample with a length of 15 cm was 10 minutes in a room at the room temperature. After the contact with acid, the samples were kept for 85 and 208 days (stages 1 and 2, respectively). Then they were subjected to testing for static strength on a test bench for personal protective equipment. For the experiments, five rope samples were taken for each type of acid. During the process, presence of the defects was monitored. By visual inspection, it is difficult or almost impossible to detect the effects of acid exposure. When testing for flexibility, in all cases the test pieces of ropes differed from the reference piece. They have uncharacteristic rigidity and hardening of the rope body in the acid contact zone. The obtained data on breaking loads are averaged and presented in the form of the tables. The dependence of the residual strength on the type of acids was calculated considering the time factor.