Table 5.
Impact potential.
Impact potential range
Size of part (mm diameter) likely to impact target
Impact potential
1
*
> 450
1/1
2
251–450
1/2
3
101–250
1/8.6
4
26–100
1/82
5
>10–25
1/2,500
↵
* Range 1 is based on a diameter of 600 mm (24 in.).