4,4

1
4,4-Methylenedianiline (MDA)
2
Regulated areas

• Entrances and accessways are posted with signs
  with the following legend

1a
3
Regulated areas

• Only authorized persons may enter regulated areas
• Tour regulated areas
• Inform contract employers of regulated areas

1b
4
Definitions

• Action level
• Permissible exposure limit (PEL)
• Short-Term Exposure Limit (STEL)

1c
5
Definitions

• Engineering controls
• Work practices
• Visual monitoring
• Air monitoring

1d
6
Monitoring

• Ongoing monitoring
• Contaminants at or above the action level, but
  below PEL (at least every 6 months)
• Contaminants at or above the PEL (at least every
  3 months)
• Changes in personnel, processes, controls

1e
7
Monitoring

• Monitoring may be stopped under some conditions
• Employees have a right to be notified of
  monitoring results within 15 working days

1f
8
Monitoring

• Company must develop and implement a written
  compliance plan to reduce exposure

1g
9
Material safety data sheets (MSDSs)

• Hazard communication program
• Location of MSDSs

2a
10
Material safety data sheets (MSDSs)

• Labels on containers
• Manufacturing/importing MDA

2b
11
Material safety data sheets (MSDSs)

• Labels for containers of MDA

2c
12
Material safety data sheets (MSDSs)

• Labels for mixtures of MDA

2d
13
Potential health hazards

• Immediate (acute) health effects
• Fever
• Chills
• Loss of appetite
• Vomiting

• Jaundice
• Dermatitis
• Anorexia
• Dark urine

3a
14
Potential health hazards

• Long-term (chronic effects)
• Carcinogenic
• Mutagenic
• Liver, kidney, blood, or spleen problems

3b
15
Limiting employee exposure

• Prohibit skin contact
• Odor is not a reliable detection
• Leak and spill detection

4a
16
Limiting employee exposure

• Employee rotation is not an acceptable method of
  compliance
• Wear PPE
• Avoid strong acids, anhydrides, oxidizers

4b
17
Limiting employee exposure

• In regulated areas, do not
• Eat or drink
• Smoke or chew gum or tobacco
• Apply cosmetics
• Keep surfaces clean of accumulated MDA

4c
18
Handling spills, emergencies, clean-up

• Conduct a program to detect leaks and spills
• Conduct regular visual inspections

5a
19
Handling spills, emergencies, clean-up

• Sweep material onto paper and place in fiber
  carton
• Package appropriately for incineration
• Know procedures for waste disposal

5b
20
Handling spills, emergencies, clean-up

• Dispose of waste containing MDA in a proper
  manner
• Repair leaks quickly

5c
21
Engineering and work practice controls

• Primary methods of exposure control
• Ventilation is the most common engineering
  control method
• Understand ventilation system operation

6a
22
Emergency procedures

• Specific employee duties/assignments
• Procedures to be followed in an emergency
• Specific training

7a
23
Emergency procedures

• Access to emergency equipment
• Proper use of equipment
• Leave area quickly in an emergency

7b
24
Emergency procedures

• Use water spray to reduce vapors
• Prohibit flames and smoking in hazard area

7c
25
Emergency procedures

• Fire response
• Each employee must know procedures/responsibilitie
  s
• Use water, dry chemical, carbon dioxide
  extinguishing agents

7d
26
Emergency procedures

• First aid measures
• Get immediate medical attention
• Remove victim from exposure area
• Remove contaminated clothing
• Do not induce vomiting
• Wash eyes or skin with large amounts of water

7e
27
Emergency procedures

• Medical examinations will be made available to
  exposed employees

7f
28
Medical surveillance

• Required for all employees
• Exposed at or above the action level for 30 or
  more days/year
• Subject to dermal exposure for 15 or more
  days/year
• Exposed during an emergency
• Determined to have been exposed from air
  monitoring results
• Showing signs of exposure

8a
29
Medical surveillance

• Exposure thresholds are determined without
  respirator use

8b
30
Medical surveillance

• Examinations will be
• Prior to assignment to an area where there may be
  an exposure
• At least annually where there may be an exposure
• Whenever an employee shows signs and symptoms of
  toxic levels of exposure

8c
31
Medical surveillance

• Records are retained for the duration of
  employment plus 30 years
• Examinations will cover
• Skin and liver function
• New exposure to liver toxins
• Any other tests deemed necessary
• Test results

8d
32
Medical surveillance

• Physician will provide written opinion, which
  includes
• Physicians opinion
• Recommended limitations
• Statement of consultation with physician
• Employees receive written opinion within 15
  working days

8e
33
Medical removal program

• Conditions for medical removal from jobs
• 29 CFR 1910.1050(m)(9)
• Removal may be temporary or permanent
• Policies regarding medical removal

9a
34
Personal protective equipment

• Purpose
• Proper use
• Limitations

10a
35
Personal protective equipment

• Respirators are required
• During the period necessary to install or put
  into effect engineering or work practice controls
• In operations where engineering controls or work
  practices are not feasible

10b
36
Personal protective equipment

• Respirators are required
• In operations where engineering controls or work
  practices do not reduce the PEL to acceptable
  levels
• In emergencies

10c
37
Personal protective equipment

• Impermeable clothing, gloves, goggles, face
  shields may be required
• PPE selection, use, inspection, cleaning/disposal

10d
38
Personal protective equipment

• Changing rooms
• Storage of clothing
• Removing/storing contaminated clothing

10e
39
Personal protective equipment

• Workers with potential of airborne exposure must
• Wash face and hands before eating, drinking
  smoking, applying cosmetics
• Shower at the end of every work shift

10f
40
Personal protective equipment

• Never take contaminated clothing home
• Only trained workers may remove contaminated
  material from storage areas

10g
41
Copy of regulation available

• Location

11a