Page 54 - Zero is Possible - Volume 2 Grey
P. 54
Quarry Roads Safety Check
Quarry roads must meet the following requirements:
Rock trap
Hold point
Access restrictions
1 Set up for light mobile 5 Block-off physically restricting 9 Installed along non-active faces
equipment to only pass once access to inactive areas. and designed at the base of
permission from the heavy a face to stop or retain falling
Berms
mobile equipment is obtained. 6 The height of the continuous rocks.
Segregation
Slope
2 Heavy and light vehicles safety berm should be half 10 The inclination of a haul road
the diameter of the largest tire
segregated by a physical barrier traveling on the road. for off-road dump trucks should
(aggregates) wherever possible. not exceed 8%.
Drainage
7 Drainage ditches along the side Maintenance
Signage
3 Use signage throughout of the road. 11 Regular maintenance to keep
the quarry to alert potential The ditch depth value is 0.33m roads in good condition, without
hazards, provide directions, and lower than the road surface. rocks and debris.
communicate rules.
Road width
8 The width of the road should
Runaway provisions
4 Physical mitigation for the case be 2.5x the width of the largest
of runaway mobile equipment vehicle for one-way road and
where the grade is greater than 3.5x for two-way road.
10%.
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