Under an emergency door opening is defined as the violent intrusion into a sealed housing due to an emergency situation. Such an emergency situation on the one hand required by people in emergencies, but also by other factors (eg. As a fire) be justified. Emergency doorways are of military, police and emergency services (fire brigade, ambulance) and using mechanical, ballistic and thermal methods.
In cases heavily secured doors, for example, of warehouses, also coarser methods such as welding torch or abrasive cutter can be used. Again, the ratio of expenses to benefits as well as possible violations need to be considered for saving. The decision is taken by the respective team leader, this is also responsible.