Abstract
Worker safety is one of the main aspects to be taken into account in any activity carried out at work. When we talk about the safety of the worker at activities carried out at height, the condition and characteristics of the personal protective equipment against falling from a height are one of the main causes of work accidents resulting in serious injuries or death. Carabiners are the main components of the safety system; their role is to connect the other components of the system or to make the connection between the system and the anchor point. Therefore, to be used safely, the carabiners’ material must have high corrosion resistance in different environments. This paper is part of a complex study that aims to improve the corrosion properties of carbon steel used in the manufacture of carabiners. Previous studies have shown that the corrosion resistance of carbon steel in various corrosive environments has been improved by the deposition of different types of phosphate layers, as well as other subsequently deposited layers. The aim of this paper is to study the galvanic corrosion evaluation between different galvanic couples (duralumin-coated samples, aluminium bronze-coated samples, and carbon steel-coated samples) tested in three different corrosive media. Moreover, the study approaches for the first time the galvanic corrosion of systems that can be formed between the materials used in the manufacture of carabiners. Accordingly, it was observed that, overall, the samples coated with a Zn phosphate layer exhibited the best performance in all the corrosive environments (saltwater and fire extinguishing solution).
Highlights
One of the most important methods of protection against falling from the height of workers is the use of individual protective equipment against falling or safety systems
Following the statistics of work accidents, it can be seen that a large number of work accidents resulting from falling from a height of workers is due to the failure of personal protective equipment [4]
Due to nickel and iron addition in the manganese phosphate solution, the size of the phosphate crystals is reduced; at the microscopic level, the crystals overlap, resulting in a Compared to the zinc phosphate and zinc/iron phosphate layers, the manganese phosphate layer has a different morphology (Figure 3c,f)
Summary
One of the most important methods of protection against falling from the height of workers is the use of individual protective equipment against falling or safety systems These systems contain multiple components made of low-corrosion resistance metals, such as carabiners, ropes, anchoring devices etc. In areas such as civil engineering, oil industry, arboriculture, or during firefighting and rescue operations, high mechanical properties are needed, so steel carabiners are mainly used [3]. Their use under certain conditions can lead to work accidents that can have serious consequences (disability or even death). Following the statistics of work accidents, it can be seen that a large number of work accidents resulting from falling from a height of workers is due to the failure of personal protective equipment [4]
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