acrylonitrile l.
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Acrylonitrile. Regulated areas. Areas where acrylonitrile concentrations might exceed the permissible exposure limit Job titles/functions allowed to access regulated areas. 1a. Regulated areas. Tour regulated areas

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regulated areas
Regulated areas
  • Areas where acrylonitrile concentrations might exceed the permissible exposure limit
  • Job titles/functions allowed to access regulated areas

1a

regulated areas3
Regulated areas
  • Tour regulated areas
  • Never store or use cosmetics, food items, beverages, or smoking items in regulated areas

1b

definitions
Definitions
  • Ceiling limit
    • 10 ppm as averaged over any 15-minute period
  • Action level
    • 1 ppm as an 8-hour TWA
  • Permissible exposure limit
    • 2 ppm as an 8-hour TWA

2a

exposure control
Exposure control
  • Engineering controls
  • Work practice controls

2b

monitoring
Monitoring
  • Detects presence of contaminants in work area
  • Available for all employees to observe

3a

monitoring7
Monitoring
  • Ongoing monitoring depends upon:
    • Exposure to contaminants at or above the action level, but below the PEL (quarterly)
    • Exposure to contaminants above the PEL (at least every month)
    • Changes in personnel, processes, controls

3b

monitoring8
Monitoring
  • Monitoring is required after clean-up operations
  • Monitoring may be stopped for individual employees under some conditions

3c

monitoring9
Monitoring
  • Employees are notified in writing of monitoring results within 5 working days
  • Written notification must include corrective actions to reduce exposures to the PEL

3d

monitoring10
Monitoring
  • Additional monitoring may be performed whenever there is a change in:
    • Processes
    • Equipment
    • Personnel
    • Work practices

3e

physical and health hazards
Physical and health hazards
  • Physical hazards
    • Flammable liquid
    • Moderate explosion hazard when exposed to flame
    • Can react vigorously with oxidizers

4a

physical and health hazards12
Physical and health hazards
  • Physical hazards
    • Potential fire hazard
    • Releases nitrogen oxides and cyanide
    • Fight fire with carbon dioxide, dry chemical, or alcohol foam

4b

physical and health hazards13
Physical and health hazards
  • Immediate (acute) health hazards
    • Eye irritation
    • Sleepiness
    • General loss of feeling - numbness
    • Cyanosis
    • Diarrhea

4c

physical and health hazards14
Physical and health hazards
  • Immediate (acute) health hazards
    • Inhalation is poisonous
    • Skin contact is poisonous
    • Poisoning is immediate
    • Severe eye irritant

4d

physical and health hazards15
Physical and health hazards
  • Chronic (long-term) effects
    • Carcinogen
    • Reproductive health changes
    • Mutagenic
    • Tumorigenic

4e

work practices
Work practices
  • Engineering controls and work practices are primary methods of exposure control
  • Supplement engineering controls and work practices with respirators if necessary

5a

work practices17
Work practices
  • Storage and handling procedures include the following:
    • Keep containers tightly closed
    • Never store uninhibited acrylonitrile
    • Store in cool, well-ventilated place
    • Keep from incompatible materials
    • “EX” type forklifts may be required

5b

work practices18
Work practices
  • Do not wear contact lenses when working with acrylonitrile
  • In areas where acrylonitrile exceeds the PEL, do not store or use cosmetics, lip balm, food items, or smoke

5c

work practices19
Work practices
  • Keep all surfaces free of acrylonitrile
  • Inspect for leaks and spills
  • Workers must wear impermeable clothing, eye protection, face shields, etc.

5d

work practices20
Work practices
  • Know location of washing facilities
  • Keep all sources of ignition away from acrylonitrile
  • Do not incinerate acrylonitrile cartridges, tanks, containers

5e

emergency procedures
Emergency procedures
  • Written emergency action plan is required
    • Contact persons
    • Phone numbers
  • Remove all ignition sources

6a

emergency procedures22
Emergency procedures
  • Evacuate the area
  • Wear appropriate PPE until cleanup is complete
  • Properly dispose of waste

6b

emergency procedures23
Emergency procedures
  • Employees not involved in emergency procedures must be:
    • Notified with a general alarm
    • Evacuated from the area
  • Be aware of fire hazards when exposed to flame, heat, oxidizers

6c

emergency procedures24
Emergency procedures
  • Keep fire extinguishers and quick-drenching facilities available
  • Fight fires with carbon dioxide, dry chemical, or alcohol foam

6d

emergency procedures25
Emergency procedures
  • Acrylonitrile is considered a Class 1B hazard
    • Foam
    • CO2
    • Dry chemical
    • NO water streams

6e

emergency procedures26
Emergency procedures
  • First aid measures include:
    • Flushing eyes with water, lifting the eyelids
    • Flushing skin with water, wash with soap
    • Moving victim to fresh air
    • Giving large quantities of water if swallowed

6f

emergency procedures27
Emergency procedures
  • Get medical attention immediately

6g