Power-actuated fastening tools were invented during the Second World War period for quicker repairing and reconstructing of the damages. They are commonly used today in the manufacture and construction. The main advantage of these tools is the ability to join hard substances materials (steel, concrete). But their functioning is not just powerful and effective, but also dangerous for the personnel working around

Power-actuated fastening tools are designed on a controlled, similar to the process of the firearm discharging, explosion created by small chemical propellant charge. Since these tools operate like a loaded gun, it is prescribed that only specially trained employers with the card verifying training must operate a power-actuated fastening tool (prescribed in the OSHA safety keeping in the USA).

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The most common power-actuated fastening tool’s safety precautions require to wear safety goggles, use ear protection, not to allow bystanders gather around the working place, maintain good balance while working on ladders and scaffolds, never load the tool until ready to make fastening, not to point tool at somebody, keep it in a safe direction, not to place one’s hand in front of the barrel. Instead of training and keeping safety rules, the operator of the tools should test them before loading with the testing method recommended by the manufacturer each day. In the case of any defect detection or the poor tool working, it should be immediately removed from service.

In addition to previously mentioned operators’ safety rules, some safety measures are provided by the tools producers. It is a muzzle safety interlock.  When the muzzle is not pressed to a surface with required force, it blocks the firing pin, and it does not reach the load to fire it. In this case, the gun does not discharge, and the nail becomes a projectile.

Besides protective mechanisms and the operators’ trainings of the proper tool usage, the work with power-actuated fastening tools requires constant personnel’s overcautiousness, alertness, and attention.

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