Page 55 - Safety and health in construction

Plant, machinery, equipment and hand tools

7.12. Crusher plants

7.12.1. Crusher plants should be located at a safe distance from the construction
work area to avoid injury to workers and damage to the workers resulting from dust,
sand, gravel, noise and vibrations.

7.12.2. Crusher plants should be provided with an overriding power isolation
switch next to the crusher unit and visible from it, to prevent starting the plant
inadvertently during repair or maintenance.

7.12.3. Electrical motors, switches, connections and all instrumentation should be
dust and moisture proof.

7.12.4. Equipment, plant and machinery should be cleared daily of dust and sand.

7.12.5. Access roads to the crusher hopper and screens should be cleaned by
water spraying or other effective means.

7.12.6. Power cables should be laid out either underground or at safe elevation
and marked with bright colour indicators to avoid damage resulting from poor
visibility.

7.12.7. Earth-moving equipment working at a crusher plant should be cleaned and
maintained after each work shift.

7.13. Power generators

7.13.1. Power generators should meet national laws and regulations for safe and
reliable operation.

7.13.2. Power generators should be rated to meet the maximum anticipated load.

7.13.3. Power generators should be located in enclosed and properly ventilated
areas.

7.13.4. Power generators should be provided with an overriding power switch to
avoid accidental remote starting during maintenance.

7.13.5. Power generators should be provided with adequate silencers and exhaust
piping.

7.13.6. When located near workers' accommodation, power generators should be
housed in a concrete room or properly insulated area in accordance with national laws
and regulations to minimise noise disturbance.

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