PART 227—OCCUPATIONAL NOISE EXPOSURE
Sign in to Google to save your progress. Learn more
Email *
Action level means an eight-hour time-weighted-average sound level(TWA) of 85 dB(A), or, equivalently, a dose of 50 percent, integrating all sound levels from 80 dB(A) to 140 dB(A).
1 point
Clear selection
Administrator means the Administrator of the Federal Railroad Administration or the Administrator’s delegate.
1 point
Clear selection
Artifact means any signal received or recorded by a noise measuring instrument that is not related to occupational noise exposure and may adversely impact the accuracy of the occupational noise measurement
1 point
Clear selection
Audiogram means a record of audiometric testing, showing the thresholds of hearing sensitivity measured at discrete frequencies, as well as other record keeping information.
1 point
Clear selection
Audiologist means a professional, who provides comprehensive diagnostic and treatment/rehabilitative services for auditory, vestibular, and related impairments
1 point
Clear selection
Audiometry means the act or process of measuring hearing sensitivity at discrete frequencies. Audiometry can also be referred to as audiometric testing
1 point
Clear selection
Baseline audiogram means an audiogram,recorded in accordance with§ 227.109, against which subsequent audiograms are compared to determine the extent of change of hearing level
1 point
Clear selection
Continuous noise means variations in sound level that involve maxima at intervals of 1 second or less.
1 point
Clear selection
Decibel (dB) means a unit of measurement of sound pressure levels
1 point
Clear selection
dB(A) means the sound pressure level in decibels measured on the A-weighted scale
1 point
Clear selection
Employee means any individual who is engaged or compensated by a railroad or by a contractor to a railroad to perform any of the duties defined in this part
1 point
Clear selection
Exchange rate means the change in sound level, in decibels, which would require halving or doubling of the allowable exposure time to maintain the same noise dose. For purposes of this part, the exchange rate is 5 decibels
1 point
Clear selection
Hearing protector means any device or material, which is capable of being worn on the head, covering the ear canal or inserted in the ear canal; is designed wholly or in part to reduce the level of sound entering the ear; and has a scientifically accepted indicator of its noise reduction value
1 point
Clear selection
Hertz (Hz) means a unit of measurement of frequency numerically equal to cycles per second
1 point
Clear selection
Medical pathology means a condition or disease affecting the ear which is medically or surgically treatable
1 point
Clear selection
Noise operational controls means a method used to reduce noise exposure,other than hearing protectors or equipment modifications, by reducing the time a person is exposed to excessive noise.
1 point
Clear selection
Occasional service means service of not more than a total of 20 days in a calendar year.
1 point
Clear selection
Otolaryngologist means a physician specializing in diagnosis and treatment of disorders of the ear, nose, and throat
1 point
Clear selection
Periodic audiogram is a record of follow-up audiometric testing conducted at regular intervals after the baseline audiometric test
1 point
Clear selection
Professional Supervisor of the Audiometric Monitoring Program in a hearing conservation program means an audiologist, otolaryngologist, or a physician with experience and expertise in hearing and hearing loss
1 point
Clear selection
Representative personal sampling means measurement of an employee’s noise exposure that is representative of the exposures of other employees who operate similar equipment under similar conditions.
1 point
Clear selection
Standard threshold shift (STS) means a change in hearing sensitivity for the worse, relative to the baseline audiogram,or relative to the most recent revised baseline (where one has been established),of an average of 10 dB or more at 2000, 3000, and 4000 Hz in either ear.
1 point
Clear selection
Time-weighted-average eight-hour (or 8-hour TWA) means the sound level,which, if constant over 8 hours, would result in the same noise dose as is measured. For purposes of this part,the exchange rate is 5 decibels
1 point
Clear selection
railroad shall develop and implement a noise monitoring program to determine whether any employee covered by the scope of this subpart may be exposed to noise that may equal or exceed an 8-hour TWA of 85 dB(A),
1 point
Clear selection
Sampling strategy. (1) In its monitoring program, the railroad shall use a sampling strategy that is designed to identify employees for inclusion in the hearing conservation program and to enable the proper selection of hearing protection.
1 point
Clear selection
Noise measurements. (1) All continuous,intermittent, and impulse sound levels from 80 decibels to 140 decibels shall be integrated into the noise measurements.
1 point
Clear selection
All instruments used to measure employee noise exposure shall be calibrated to ensure accurate measurements.
1 point
Clear selection
The railroad shall post the monitoring results at the appropriate crew origination point for a minimum of 30 days. The posting should include sufficient information to permit other crews to understand the meaning of the results in the context of the operations monitored.
1 point
Clear selection
Exposures to continuous noise greater than 115 dB(A) and equal to or less than 120 dB(A) are permissible,provided that the total daily duration does not exceed 5 seconds
1 point
Clear selection
Cost. The audiometric tests shall be provided at no cost to employees.(c) Tests. Audiometric tests shall be performed by:(1) An audiologist, otolaryngologist,or other physician who has experience and expertise in hearing and hearing loss; or(2) A qualified technician
1 point
Clear selection
Testing to establish a baseline audiogram shall be preceded by at least 14 hours without exposure to occupational noise in excess of the action level. Hearing protectors may be used as a substitute for the requirement that baseline audiograms be preceded by 14 hours without exposure to occupational noise.
1 point
Clear selection
Periodic audiogram. (1) The railroad shall offer an audiometric test to each employee included in the hearing conservation program at least once each calendar year.
1 point
Clear selection
Evaluation of audiogram. (1) Each employee’s periodic audiogram shall be compared to that employee’s baseline audiogram to determine if the audiogram is valid and to determine if a standard threshold shift has occurred
1 point
Clear selection
If a comparison of the periodic audiogram to the baseline audiogram indicates that a standard threshold shift has occurred,the railroad shall inform the employee in writing within 30 days of the determination
1 point
Clear selection
Standard threshold shift. In determining whether a standard threshold shift has occurred, allowance may be made for the contribution of aging(presbycusis) to the change in hearing level by correcting the annual audiogram
1 point
Clear selection
Audiometric tests shall be pure tone, air conduction, hearing threshold examinations, with test frequencies including 500, 1000, 2000, 3000, 4000, 6000,and 8000 Hz. Tests at each frequency shall be taken separately for each ear.
1 point
Clear selection
Required use at action level. A railroad shall require the use of hearing protectors when an employee is exposed to sound levels that meet or exceed the action level, and the employee has:
1 point
Clear selection
Required use for TWA of 90 dB(A).The railroad shall require the use of hearing protectors when an employee is exposed to sound levels equivalent to an 8-hour TWA of 90 dB(A) or greater
1 point
Clear selection
Submit
Clear form
This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy
Google Forms