Safety
As with their air-actuated cousins, powder-actuated guns have a muzzle safety interlock. If the muzzle is not pressed against a surface with sufficient force, the firing pin is blocked and cannot reach the load to fire it. This ensures that the gun does not discharge in an unsafe manner, causing the nail to become a projectile. Nonetheless, good judgment should always be used when using a powder-actuated nail gun, since the nail is driven with far more force than an air-actuated gun. The surface being nailed should, therefore, certainly be capable of stopping and holding the nail.
Most manufacturers of powder-actuated nail guns offer training and certification. Many projects and employers require this before an employee is permitted to use the tool.
The ownership and use of these tools is regulated in Australia. The owner has to register the tool, and an operator of one of these tools is required to have a license and to have undergone training in their use. These laws are in keeping with Australia's extremely strict firearm laws.
In the US, failure to properly dispose of charges is a common OSHA safety violation. Training is required by OSHA before someone can use the tool on a jobsite.
Read more about this topic: Powder-actuated Tool
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