the height of the fences of the production areas should not be less than 2 meters, and that of the working areas should not be less than 1.2 meters;
fences connected to places where people pass in mass should be equipped with an integral upper protective covering;
the upper protective cover should be resistant to the impact of snow load and temporary factors;
fences are required to have no gaps except for gates and windows that are monitored during the workday and locked after work is completed.