Eliminating and Controlling Dust & Noise Hazards

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Eliminating and Controlling Dust Noise Hazards
Rocky Mountain District
July 2002
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EXPOSURE CONTROLS

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EFFECTIVE EXPOSURE CONTROL

• Controls the hazard - reduces health threat
• Promotes ability to work in comfort
• Protects all potentially exposed workers
• The control itself should not create a
  hazard.

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POINTS OF CONTROL
Source of contaminant
Miner
Path
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TYPES OF CONTROLS
ENGINEERING
ADMINISTRATIVE
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Preventing Hazard Generation

• ENGINEERING
• SUBSTITUTION
• PROCESS CHANGE
• PURCHASE EQUIPMENT
• THAT WONT PRODUCE
• HAZARDS

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Engineering Controls

• Design right to start with!
• Redesign as necessary
• Maintain
• Utilize
• Sample to determine effectiveness
• Train the workers
• Update with technology changes

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ENGINEERING REDESIGN EXAMPLES

• AUTOMATE PARTS OF THE PROCESS
• FOR EXAMPLE COMPUTERIZED
  LOADING

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Engineering Controls

• Operator redesigns crusher controls puts
  operator in booth.
• Reduce speed of moving parts.
• Redesign spouts in bagging.
• Use water, mist or fog sprays.
• Replace metal parts with nonmetal parts.

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Engineering Controls (used after hazard is
generated)

• Ventilation
• General
• Dilution Ventilation
• Local Exhaust

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LOCAL EXHAUST VENTILATION

• HOODS - Captures substance
• DUCT WORK - Carries substance away
• FANS - Move AIR through duct work
• AIR CLEANER - Removes substance and removes it
  before air returns to environment
• MAKE-UP AIR - Replace air exhausted by system

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Regular Inspection and Maintenance

• Is Absolutely Necessary!

• Check seals

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Somethings not right!
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ENCLOSURE ISOLATION
Environmental Cab

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Engineer Out Path Noise with Barriers

• INCREASE DISTANCE
• AT THE SOURCE
• Select quiet equipment
• Reduce impact or impulsive forces
• Reduce speed in machines
• IN THE TRANSMISSION PATH
• Separate noise and receiver
• Use sound absorbing materials

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Work Practices

• Vacuums with HEPA filters
• NO dry sweeping
• Use wet methods

X
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ADMINISTRATIVE CONTROLS

• ROTATE WORKERS / WORK SCHEDULES
• ESTABLISH REGULATED AREAS
• WARNING SIGNS BARRICADES
• EDUCATION TRAINING
• ELIMINATE THE JOB

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HAZARD TRAINING INCLUDES

• HAZARDS OF MATERIAL OR PHYSICAL AGENT
• HAZARD RECOGNITION
• EFFECTIVE CONTROL MEASURES
• PPE PROGRAMS

• INVOLVES
• -SUPERVISORS
• -MINERS

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ACCOMPLISHED BY

• FORMAL TRAINING
• HEALTH AND SAFETY MEETINGS
• BOOKLETS
• SIGNS AND LABELS

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WARNING SIGNS
NOISE HAZARDOUS AREA HEARING PROTECTION REQUIRED
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SUPERVISOR EDUCATION

• WHEN / WHERE TO GET HELP
• LEGAL / CORPORATE RESPONSIBILITIES
• COST / BENEFIT INFORMATION

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MINER EDUCATION

• SAFETY AND HEALTH HAZARD EDUCATION
• OPERATING PROCEDURES - EFFECTIVE USE OF CONTROLS
• UNDERSTANDING MAINTENANCE NEEDS

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MINE OPERATOR MUST BE COMMITTED!

• FURNISH SAFE / HEALTHY FACILITIES
• TRAIN MINERS
• CONTROL HAZARDS
• MONITOR THE WORKPLACE

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MINERS

• OBSERVE RULES -
• work practices, cleanup, hygiene
• NOTIFY SUPERVISORS OF HAZARDOUS CONDITIONS
  AND PROBLEMS WITH CONTROL MEASURES
• MAINTENANCE
• USE REQUIRED PPE

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CONTROL EXPOSURES AT POINT OF WORKER

• JOB ROTATION
• ENCLOSURES/Booths/Cabs
• TRAINING EDUCATION
• PERSONAL MONITORING
• MAINTENANCE PROGRAMS

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PERSONAL PROTECTIVE EQUIPMENT

• HEALTH HAZARD CONTROL
• RESPIRATORS
• HEARING PROTECTION
• COVERALLS, GLOVES, BOOTS, GLASSES, HARD HATS

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Use PPE

• WHEN.
• Other controls are being developed and installed
• Additional protection is needed
• The hazards cant be controlled any other way

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MSHA REGULATIONS30 CFR

• AIRBORNE CONTAMINANTS 56/57.5005
• NOISE Part 62
• DRILL DUST CONTROL 58.620

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The E N D Thank You!