WorksheetsExam Reveiw
Total questions: 27
Worksheet time: 14mins
OSHA Requires the profession supervisor of an audiometric testing program be an audiologist or physician.
true
False
OSHA's permissible exposure level and exchange rate are:
85 dB A TWA And 3 dB
85 dB A TWA And 5 dB
90 dB A TWA and 3 dB
90 dB A TWA and 5 dB
Which of the following is equal to a 100% noise does ( 90 dB A TWA)?
95 dB A for 6 hours
100 dB A for 2 hours
110 dBA for 1 hour
115 dBA for 130 min
Excessive background noise in the test area can:
affect the accuracy of baseline tests
affect the accuracy of retests
artificially raise the number of STS
distract the employee being tested
all of the above
A biologic calibration check of the audiometer should be performed:
on each day of use
3 month intervals
6 month intervals
annually
The pulse feature of the audiometer may bring out more consistent responses from employees with tinnitus.
True
False
If you are using a microprocessor/automated audiometer, you do NOT need to know how to do manual testing.
True
False
What is the purpose of the 1000 Hz re-test?
It indicates whether the employee is wearing hearing protection during the test.
verifies the accuracy and reliability of the testing
It is used to determine the presence of STS
It breaks up the predictable rhythm of testing
A noise induced hearing loss typically produces a decrease in hearing sensitivity or notch on the audiogram at:
500 Hz
1000 Hz
2000 Hz
4000 Hz
The OHC is qualified to do all of the following except:
Listening checks and daily calibration
pure tone threshold testing
diagnosis of hearing problems
selection, fitting, and monitoring of HPDs
All of the above
The OHC certification period is:
1 year
3 years
5 years
10 years
A hearing test of an employee who has just been in high noise levels may show:
Presbycusis
Cerumen
Standard Threshold shift
Temporary threshold shift
When determining the age corrected threshold shift, which age correction values are used?
current age
baseline age
a and b
The hearing protection device with the most attention is always the appropriate choice.
True
False
If management walks in and out of noisy environments, it is NOT important for them to use hearing protection, as they are not exposed to high levels of noise for long durationse
True
False
Foam earplugs should be disposed of when they no longer return to original shape and size following removal from the ear.
True
False
Training and motivation may be the deciding factor in determine the success and failure of a hearing conservation program in industry.
True
False
Record keeping and documentation is a crucial aspect of the hearing conservation program, as it
allows for comparison of audiometric test results to baseline
Provides program supervisor with required information
Provides evidence of compliance of OSHA regulations
evaluates the effectiveness of the program
all of the above
Without appropriate calibration records, audiograms may be considered invalid.
True
False
The action level is
80 dB A
85 dB A
85 dB A with a 3 dB HL exchange rate
90 dB HL
What are the three bones of the middle ear
malleus, incus stapes
umbo, malleus, cochlea
Tympanic membrane, cochlea, round window
What is the physical measure of pitch?
Frequency
loudness
intensity
malleability
What is the Noise Reduction Rating?
how noise is attenuated with hearing protection devices
how OSHA rates engineering controls
how safety engineers control the source of the noise
The results of the audiometric testing must be communicated to the employee in a written format, within 21 days of testing.
True
False
The acoustic and exhaustive calibrations must be performed daily, by the OHC.
True
False
Two machines are running simultaneously, each with an output of 84 dB A. What is the total output?
198 dB A
85 dB A
87 dB A
92 dB A
dB Z is used to describe what type of noise?
Continual
intermittent
