Page 132 - Advances In Productive, Safe, and Responsible Coal Mining

116 Advances in Productive, Safe, and Responsible Coal Mining

Zones relative to CMM chassis:
Zones relative to CMM
10 conveyor boom:

9 8

7 6
13

5 4

3
12 1 1

2

11

Fig. 7.8 iPD 2 zone configuration.

could have only been a preventative factor in 62% of the accidents. This indicates that
by implementing iPD into commercially available proximity detection systems,
miners may have the safety benefits of proximity detection systems while potentially
having more freedom to move around the machine. They may also be able to work
more efficiently, thus potentially enhancing acceptance of these systems. Results were
based on MSHA investigation reports. While sufficient accident data are not available
to yield statistically validated conclusions, the analyses performed provide some pos-
itive insight into the effectiveness of proximity detection systems.
The comparison importantly illustrates that zone configuration definitions are crit-
ical to proximity detection system effectiveness. Ultimately, neither iPD 1 nor iPD 2
should be considered recommended designs, but rather examples of how zones for an
intelligent proximity detection system could be configured and how different param-
eters affect the ability to prevent worker injuries. It should also be noted that there are a