NOISE CONTROLS FOR

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NOISE CONTROLS FOR

• PLANTS AND MILLS

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SOURCE PATH RECEIVER
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NOISE EXPOSURE CAN BE REDUCED BY

• APPLYING CONTROLS TO THE SOURCE (S)
• BLOCKING THE PATH (S)
• ENCLOSING THE RECEIVER
• LIMITING THE EXPOSURE TIME

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RESILIENT SCREEN DECKING
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TREATED HOPPERS CHUTES
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RESILIENT CRUSHER LINER AND FEED PLATE
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CHUTE LINERS
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INSTALLATION OF CHUTE DAMS
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VIBRATION ISOLATION MOUNTS
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Barrier Concept
Propagated
Reflected
Diffracted
Noise Source
Shadow Zone
Barrier
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ACOUSTICAL BLOCK WALLS
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STRIP CURTAIN BARRIERSREQUIRE A 30 TO 50
OVERLAP
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TRACK MOUNTED PANELS
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THE FOLLOWING DEVICES HELP TO REDUCE THE AMOUNT
OF TIME SPENT IN HIGH NOISE AREAS THEREBY
LOWERING NOISE EXPOSURE
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CONVEYOR BELTING KEEPSMATERIAL ON THE SCREEN
REDUCING CLEAN-UP TIME
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SINGLE LUBE POINTS HELPREDUCE EXPOSURE TIME
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REMOTE CCTV MONITORING
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BEARING SENSORS
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BIN LEVEL INDICATOR
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MOST OF THESE DEVICES CAN BE MONITORED INSIDE
AN OPERATORS CONTROL BOOTH
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OPERATOR BOOTHS MUST PROVIDE ADEQUATE VISIBILITY
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Maintain Your Noise Controls

• Screen decking and chutes should be inspected and
  replaced or repaired during down time if possible
• Barriers around mills and crushing equipment
  should be kept closed
• Windows and doors of control booths should be
  tightly sealed
• Remote sensors should be operational

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Additional Resources
www.msha.gov/1999noise/Guides/MillPreptotalFi
nal.pdf
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Your children can whisper to you now, Dont
make them shout at you in the future