► Med Misc 57 > Hearing-loss Prevention Programs And Services > Flashcards

Hearing-loss Prevention Programs And Services Flashcards

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1
Q

NIHL

A

Noise induced hearing loss

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2
Q

NIHL caused by occupational exposure has been a compensate occupational disease since…

A

The 1950s

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3
Q

NIHL has been identified as…

A
  • One of the most common occupational diseases

- Second most self reported occupational illness or injury

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4
Q

Estimated number of workers exposed to hazardous noise levels

A

30 million

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5
Q

Key industries with high numbers of workers exposed to hazardous noise

A
  1. Agriculture
  2. Mining
  3. Construction
  4. Manufacturing and utilities
  5. Transportation
  6. Military
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6
Q

Noise exposure has been associated with the following:

A
  1. Anxiety
  2. Depression
  3. Blood pressure
  4. Heart rate changes
  5. Myocardial infarction
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7
Q

Hearing loss programs are designed to do the following:

A
  1. Prevent noise induced hearing loss
  2. Reduce worker exposure to harmful noise
  3. Identify progression of hearing loss so preventive measures can be taken
  4. Identify temporary hearing loss before it becomes permanent
  5. Comply with federal regulations or state OSHA plans
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8
Q

OSHA noise standard

A

CFR 1910.95

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9
Q

OSHA regulations limit work site noise exposure to….

A

90 dBA time weighted average (TWA) over an 8 hour shift

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10
Q

Mandatory components of OSHA Noise Standard

A
  1. Hearing loss prevention programs
  2. Hearing protection devices (HPD)
  3. Engineering controls
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11
Q

Hearing loss prevention programs are mandatory in an environment where….

A

Daily noise level equals or exceeds 85dBA over an 8 hour time weighted average

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12
Q

Hearing conservation recommendations based on TWA in dBA

84 or below

A

Workers included in HCP: no
HPD utilization: voluntary
HPD selection options: free choice

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13
Q

Hearing conservation recommendations based on TWA in dBA

85-89

A

Workers included in HCP: yes
HPD utilization: optional
HPD selection options: free choice

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14
Q

Hearing conservation recommendations based on TWA in dBA

90-94

A

Workers included in HCP: yes
HPD utilization: required
HPD selection options: free choice

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15
Q

Hearing conservation recommendations based on TWA in dBA

95-99

A

Workers included in HCP: yes
HPD utilization: required
HPD selection options: limited choice

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16
Q

Hearing conservation recommendations based on TWA in dBA

100 or above

A

Workers included in HCP: yes
HPD utilization: required
HPD selection options: very limited choice

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17
Q

Rationale for and benefits of a worksite HLPP

A
  1. Reduced worker risk for NIHL and other health conditions
  2. Better labor management relations
  3. Decreased likelihood on antisocial behaviors resulting from annoyance
  4. Greater job satisfaction
  5. Increased productivity
  6. Better quality of life
  7. Reduced worker fatigue and irritability resulting in improved worker efficiency and job performance
  8. Reduced accident rates, illnesses and lost work time
  9. Reduced risk of workers compensation claims
  10. Reduced loss of trained and experienced personnel
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18
Q

Hearing loss prevention programs can benefit

A
  1. Management

2. Employees

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19
Q

How can prevention, early detection and reducing noise hazard benefit employees?

A
  1. Health

2. Improve workplace morale

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20
Q

How can prevention, early detection and reducing noise hazards benefit management

A
  1. Improved employee morale
  2. Greater job satisfaction
  3. Improved occupational safety
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21
Q

An effective hearing loss prevention program requires the following:

A
  1. Support, cooperation and participation of all levels of management
  2. Support of workers
  3. Cooperation of union leaders and/or person responsible for work site safety
  4. Review of the OSHA standard
  5. Review of recommendations for compliance
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22
Q

Resource for recommendations for compliance with OSHA standard

A

NIOSH Practical Guide to Preventing Hearing Loss

Specifically appendix A- OSHA Standard Compliance Checklist

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23
Q

Management roles related to Hearing Loss Prevention Programs

A
  1. Developing and implementing a HLPP policy
  2. Identifying program personnel and defining responsibilities
  3. Providing personnel, space, supplies and funding for the program
  4. Providing all elements of program free of charge
  5. Ensuring workers exposed are compliant with program
  6. Make a good faith effort to eliminate or reduce sources of noise
  7. Posting appropriate warning signs and ear protection requirements at entrances to areas with noise levels exceeding 85dBA
  8. Conducting and reviewing annual program evaluations
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24
Q

Component of HLPP policy that must be implemented

A

Disciplinary action for noncompliance

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25
Program personnel needed for HLPP
1. Qualified physician, otolaryngologist or audiologist to supervise program 2. Program coordinator and other personnel responsible for program components
26
Responsibilities of hearing loss prevention coordinator
1. Acquiring certification in hearing conservation 2. Determining workers who qualify for program 3. Taking a brief health and aural history on each worker 4. Performing otoscopic exam and audio metric testing 5. Coordinating testing schedule and follow-up procedure 6. Keeping accurate, clear and complete testing and counseling records 7. Selecting, fitting and monitoring the wearing of appropriate hearing protection devices 8. Acting as liaison between workers and other members of the team 9. Educating and training workers on how to protect themselves from hearing loss 10. Referring workers to outside sources for further testing or medical treatment when indicated 11. Seeking workers' input for evaluation of program 12. Providing regular updates annually to management regarding the HLPP program
27
Success of hearing loss prevention program depends on workers' active participation by doing the following:
1. Provide information relative to current ear conditions, ear diseases and treatments, and ototraumatic exposure histories 2. Cooperate by following audiometric tester instructions 3. Inform the audiometric tester if instructions are unclear or if there are personal or environmental interferences 4. Comply with program by wearing appropriate hearing protection 5. Encourage coworkers to wear hearing protection 6. Report difficulties of safety hazards related to hearing protection use and/or changes in noise levels in work areas
28
If reliable information indicates noise exposure at the worksite........
Noise measurements should be conducted
29
Noise measurements should be performed by:
1. Acoustical engineer 2. Industrial hygienist 3. Occupational audiologist 4. Professional proficient in noise-level measurement
30
Only sound-level meters or noise dosimeters that meet ------------ should be used
The American National Standards
31
A sampling strategy that will pick up all ----------------- is needed
Continuous, intermittent and impulse sound levels from 80 to 130dBA is needed
32
All sound levels in the --------- should be used
Total noise measurement
33
---------- should be permitted to observe monitoring
Workers and their representatives
34
Workers who are exposed to noise at or above ---------- must be notified
8-hour TWA of 85dBA
35
Sound survey results are used to:
1. Identify areas of the worksite where hazardous noise levels exist 2. Identify workers to be included in the HLPP 3. Classify workers' noise exposures to define policies for hearing protection devices and prioritize areas for noise-control efforts 4. Identify safety hazards in terms of interference with speech communication and warning signal detection 5. Evaluate noise source for noise control purposes 6. Document noise levels for legal purposes
36
Noise control measures include:
1. Engineering controls 2. Administrative controls 3. Personal protective equipment
37
Engineering controls
The most effective and the most desirable long term solutions
38
To determine the engineering control that should be used, it is recommended that ------- be assessed
The noise characteristics
39
Common engineering controls for noise control are:
1. Elimination of noise source 2. Redesign of the process to be quieter 3. Isolation of the machinery to prevent vibrations and noise from radiating 4. Building an enclosure around noisy machinery 5. Using absorptive materials on walls and ceilings 6. Erecting a barrier or noise-reducing curtain around the noisy area 7. Adding a muffler to noisy tools 8. Keeping machinery well-balanced, oiled and in good repair
40
Administrative controls
Include work practices and are implemented when engineering and work practice controls are not feasible May be used in conjunction with other strategies
41
Examples of administrative controls
1. Rotating workers to less noisy areas | 2. Performing high-noise tasks when fewer workers are present
42
Personal protective equipment is provided when....
Engineering and administrative controls are not feasible and may be used in conjunction with other strategies
43
Workers should be provided with appropriate hearing protection devices such as:
1. Earplugs 2. Muffs 3. Helmets
44
Hearing protection devices should be provided...
1. In appropriate styles and types | 2. At no cost to workers
45
When should training be conducted for workers who are included in the HLPP?
Initially for new hires and then annually
46
Components of HLPP training program
1. Interpreters should be provided for ESL employees 2. The characteristics of sound should be described 3. Workers should be told where noise is found 4. Multiple effects of noise should be described
47
Sound is defined as...
A complex combination of pure tones found in the environment that result in a vibratory disturbance in the pressure of fluid in the ear and capable of being detected by the organs of hearing
48
How do you tell workers where noise is found?
1. Cite occupational, recreation and environmental sources 2. Include that there are cumulative effects from multiple sources 3. Provide examples of different types of noise from actual locations at the worksite
49
Noise level of jet plane
140 dBA
50
Noise level of gunshot blast (impulse)
140dBA
51
Noise level of automobile horn
120 dBA
52
Noise level of rock band
110dBA
53
Noise level of chain saw
110dBA
54
Noise level of car racing
110dBA
55
Noise level of motorcycle
100dBA
56
Noise level of subway
90dBA
57
Noise level of average factory
80-90dBA
58
Noise level of noisy restaurant
80dBA
59
Noise level of busy traffic
75dBA
60
Noise level of conversational speech
65dBA
61
Noise level of average home
50dBA
62
Noise level of quiet office
40dBA
63
Noise level of soft whisper
30dBA
64
Effect of exposure to 80dBA noise
Usually will not cause permanent hearing loss
65
Effect of exposure to 110dBA noise
Long exposure over 90dBA may eventually cause permanent hearing loss
66
Effect of exposure to 110dBA noise
Noise induced hearing loss
67
Effect of exposure to 140dBA noise
Pain threshold Acoustic trauma May cause permanent damage to the delicate hair cells of the cochlea
68
Physical problems of noise exposure
1. Hearing loss 2. Effects on cardiovascular system 3. Effects on gastrointestinal system 4. Headache 5. Stress 6. Fatigue
69
Psychologic problems of noise exposure
1. Annoyance 2. Feeling of isolation among workers 3. Masking of warning shouts and signals 4. Interference with speech communication
70
Awareness of hearing loss usually does not occur until....
The loss is significant
71
Tinnitus
Aka ringing in the ear A sign of an overtaxed auditory system
72
Perception that --------- is often a sign of hearing loss
Others are mumbling
73
Occupational hearing loss is usually
Bilateral
74
Hearing loss to only one ear may be caused by.....
Pathologic processes other than occupational exposures or acoustic trauma to that ear
75
Function of the outer ear
Collects sound waves and funnels them into the ear canal
76
Function of the middle ear
Sound impinged in e ear drum and is mechanically transmitted to the bones of the middle ear. Ossicular movement creates vibrations in the fluid-filled cochlea in the inner ear
77
Components of the middle ear
Ossicular chain which consists of: 1. Malleus 2. Incus 3. Stapes
78
Function of the inner ear
Transmits sound waves through hair cells in the cochlea that send electrical impulses to the auditory nerve, which transmits the signals to the brain where the sound is interpreted
79
Types if hearing loss
1. Acoustic trauma 2. Sensorineural 3. Conductive
80
Hearing loss from acoustic trauma
- results from a single exposure such as a loud, explosive blast or a blow to the head - may rupture the eardrum and damage the middle and inner ear
81
Sensorineural hearing loss
- results in changes in the receptive cells; occurs from long-term exposure to noise - is usually bilateral - is not usually apparent until hearing loss is severe - is usually irreversible, it's severity depending in the intensity, frequency and duration of noise exposure
82
Conductive hearing loss
- occurs from obstruction of sound through the outer and inner ear - may be caused by wax buildup, presence of foreign body, ruptured eardrum, infection, otosclerosis or injury - may be reversed or stabilized by appropriate treatment or surgery
83
Year of passage of Hearing Conservation Amendment to the OSH Act
1983
► Med Misc 57
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