A bolt gun is a shooting device in which an explosive charge drives a bolt or nail into a solid material.
Bolt guns must be either CE-labelled in accordance with the new Machine Directive (2006/42/EC) or hold type approval from the Working Environment Authority. The type approval number is written as DK + a number followed by A or B, which indicates the gun group.
Bolt guns approved by the Working Environment Authority, are divided into groups A and B:
A. Punch guns, where the muzzle velocity for the bolt exceeds 100 m/sec., and projectile guns.
B. Punch guns, where the muzzle velocity for the bolt is 100 m/sec. or lower.
Normally only type B bolt guns may be used. Type A guns may only be used if it is not possible to use type B guns for technical reasons.
Bolt guns must be designed in such a manner as to incorporate at least two independent safety devices to prevent accidental firing. These safety devices must operate even if a loaded gun is dropped or knocked.
The manufacturer or his representative here in Denmark must undertake all essential repairs and the prescribed annual inspection. They must issue proof of inspections carried out.
- The person using the gun must be 18 or over.
- The person using the gun must have received thorough instruction and practice on the correct operation and function of the gun (including all the details in the usage instructions and safety provisions, as well as inspection and maintenance, daily cleaning and greasing).
- Minors under 18 may operate bolt guns if this work is taking place in connection with training which aims to give them skills (e.g. as apprentices).
Before using a bolt gun, it is necessary to ensure that it is not possible to shoot through an object. If there is a risk of this, it is necessary to ensure that there is nobody standing behind walls and similar in the shooting direction.
Keep unauthorised persons away from the work site. Before shooting, it is necessary to put up warning signs in appropriate locations, e.g. in doorways to the risk zone. These signs must bear the words:
Cartridge loading is selected on the basis of usage instructions in respect of the work in question. The correct safety screen must be used, and it may be necessary to acquire a special safety screen.
Shooting is not permitted:
- Into brittle or hard materials (e.g. tempered steel, granite and glazed tiles).
- Near to edges so that there is a risk of the bolt being flung back or splinters being broken off.
- Anywhere you have previously attempted to fire in a bolt or nail.
- Against bolts or nails which have not been driven in completely on a previous attempt (double shot).
- Anywhere where sparking may cause fire or explosion.
- If there is a risk of striking electric cables, gas pipelines and similar.
The work area must be designed such that the operator stands on a firm, secure base.
Cartridges must not be carried loose in a pocket.
The gun must be placed in the storage box when not in use, and this box must then be locked.
When using a bolt gun, the person using it and any assistant he may have must wear:
- Close-fitting safety goggles.
- Ear defenders which attenuate the sound of shots.
Bolt guns must be subject to inspection at least once a year, and at any other time when necessary. The inspection must be undertaken by the manufacturer or his representative. Proof of the inspection must be issued when the inspection has been completed.
Check the tool regularly in order to see whether it is damaged in any way.