To establish for University of Florida employees the following procedures, requirements, organizational responsibilities, guidance, safety and health precautions governing tasks involving personal and/or occupational exposure to noise.
The hearing conservation program shall apply whenever employee noise exposures equal or exceed an 8-hour time-weighted (TWA) sound level of 85 decibels measured on the A scale (slow response) or, equivalently, a dose of fifty percent as measured by noise dosimeters.
AUTHORITY
By authority delegated from the University President, the Vice-President for Business Affairs is responsible for the safety of all University facilities. Under this authority, policies are developed to provide a safe teaching, research, service, housing and recreational environment.
POLICY
It is the policy of the University of Florida to reduce noise exposure in the workplace to the extent that it is reasonably practicable. In those situations where it is not feasible to reduce noise exposure by suitable engineering means, during exposure evaluation periods, and during implementation of engineering controls, either administrative controls or personal hearing protectors shall be used to ensure the protection of employees.
The Occupational Safety and Health Administration (OSHA) has promulgated regulations limiting employee exposure to noise. These regulations have been adopted by the State of Florida. The American Conference of Governmental Industrial Hygienists (ACGIH) and the National Institute for Occupational Safety and Health (NIOSH) have instituted more stringent guidelines which are adopted by UF.
RESPONSIBILITIES
Environmental Health and Safety (EH&S)
EH&S is responsible for the administration of the Hearing Conservation Program
Determines the need for hearing protection through conduction of noise surveys
Provides initial and annual training
Provides audiograms to participants outside the Gainesville area
Departments
Assist EH&S in identifying employees who are required to participate in the Hearing Conservation Program by identifying potential areas of concern in their units
Document work in areas of excessive noise in PeopleSoft for positions with a number and on the INOP form for individuals not on positions
Inform personnel that a baseline and annual audiograms and participation in a training program are required for all future appointments to this position
Schedule preplacement health assessments and baseline and annual audiograms for their employees
Provide a choice of hearing protection devices to those employees requiring them and insures that they are being worn.
Speech and Hearing Clinic
Provides audiograms for all participants in the Gainesville area
Provides a copy of the audiogram
to the employee and
to the UF OCCMED Clinic for filing in the person’s medical record.
Notifies EH&S if excessive losses are detected.
UF Occupational Medicine Clinic
Performs preplacement evaluation and evaluation of baseline and annual audiograms
Maintains all medical records associated with this program
Enters the review status in myUFL
Provides monitoring: a) Initial clinical evaluation of standard threshold shift; b) Referral coordination for ENT evaluation of threshold shift to determine if it is noise induced.
Employee
The employee is responsible for complying with all requirements of this Program once it is established that he or she must participate. The employee must:
Attend all scheduled audiogram appointments to avoid disciplinary actions,
Wear any required hearing protection
Attend the required initial and annual training
PROCEDURES
When employee noise exposures equal or exceed an 8-hour time-weighted average (TWA) sound level of 85 dBA, feasible administrative or engineering controls shall be utilized. If such controls fail to reduce 8-hour TWA exposures to less than 85 dBA, personal protective equipment shall be provided and used to reduce the exposure levels. Protective equipment shall also be used to lower exposures to less than 85 dBA TWA until feasible administrative or engineering controls are implemented.
A hearing conservation program shall be implemented whenever employee noise exposures equal or exceed an 8-hour TWA sound level of 85 dBA.
Monitoring
When information indicates that any employee’s exposure may equal or exceed an 8-hour time-weighted average of 85 dBA, a monitoring program shall be implemented to identify employees for inclusion in the hearing conservation program and to enable the proper selection of hearing protectors.
Where circumstances as high worker mobility, significant variations in sound level, or a significant component of impulse noise make area monitoring generally inappropriate, representative personal sampling shall be used to comply with the monitoring requirements of this paragraph.
Monitoring shall be repeated whenever a change in production, process equipment, or controls increases noise exposures.
Employee Notification
Each employee, whose noise exposure is monitored, shall be notified of the results of the monitoring.
Audiometric Testing Program
All employees whose exposures are equal to or exceed an 8-hour TWA of 85 dBA shall be included in an audiometric examination program.
A baseline audiogram shall be performed within 6 months of an employee’s first exposure at or above 85 dBA TWA.
Annual audiometric testing shall be performed for each employee exposed at or above an 8-hour TWA of 85 dBA and in accordance with 29 CFR 1910.95.
The audiometric test data shall be evaluated in accordance with 29 CFR 1910.95.
Hearing Protectors
Hearing protectors shall be provided to all employees who are exposed to an 8-hour TWA of 85 dBA. Employees should be required to use hearing protectors in areas where noise levels exceed 85 dBA (8 hour TWA).Hearing protectors shall be worn as required by Section e.1.
Hearing protectors shall be worn by any employee who is exposed to an 8-hour time weighted average of 85 dBA or greater, and who:
has not yet had a baseline audiogram established or has experienced a standard threshold shift.
Employees shall be given the opportunity to select their hearing protectors from a variety of suitable hearing protectors.
Hearing Protectors Attenuation
University of Florida shall evaluate hearing protection attenuation for the specific noise environments in which the protector will be used in accordance with 29 CFR 1910.95 {Appendix B and Section (i)}.
Hearing protector attenuation must be evaluated for specific noise environments. Hearing protectors must attenuate employee noise exposures at least to a TWA of 85 decibels and to 85 decibels or below for employees who have experienced a standard threshold shift (STS). It is recommended that, if possible, all hearing protectors be selected to attenuate noise below 85 dBA.
Hearing protection must be worn by all employees who are exposed to noise above 85dBA. The hearing protector should reduce the noise level below an 8-hr TWA of 85 dBA. All hearing protectors are assigned a noise reduction rating (NRR) which can be found on the individual package or box the hearing protectors came in. This NRR is based on a dBC scale, although most sound measurements are given in a dBA scale. To account for this difference, the NRR number must be reduced by a value of 7 to determine how much protection it will afford in the work environment.
OSHA Method- The equation is as follows: Effective Exposure = dBA – (NRR – 7) where: Effective Exposure is the noise level for the hearing protector dBA = measured A-weighted noise level (sound level meter readings) NRR = noise reduction rating obtained on package
If the noise of a piece of equipment is measured at 96 dBA, a hearing protector with a NRR of at least 18 would be needed: Effective Exposure = dBA – (NRR – 7) 85 = 96 – (NRR – 7) NRR – 7 = 96 – 85, NRR = 11 + 7 NRR = 18.
In a case where the hearing protector does not offer enough protection, earmuffs and plugs can be worn together. In this case, determine the effective NRR of the plugs and then add 5dBA. This number is then subtracted from the 8-hr TWA to determine the actual exposure at the employee’s ear. Again, this number should be less than 85dBA.
Remember, hearing protectors must be worn properly to provide maximum protection.
Training Program
A training program must be established for all employees who are exposed to noise at or above an 8-hour time-weighted average of 85 decibels. This training program must be repeated annually for each employee included in the hearing conservation program.
The employees must be informed of the following.
The effects of noise on hearing
Physical damage of cochlea
Location of high noise areas
Off the job hearing hazards such as air boating, chain saws, gun fire, etc.
Purpose of hearing protection devices and how they work.
Instructions on selection, fitting, use and care of hearing protectors.
The types and styles of hearing protection devices available and attenuation of the various types.
Where to obtain hearing protectors.
The purpose of audiometric testing and an explanation of test procedures.
Posting
Areas where the noise level exceeds 85 dBA, must be posted with a warning and a requirement for the use of hearing protection.
Participation in the Hearing Conservation Program is based on UF employee job duties. When a department fills a designated position, the medical monitoring procedures are as follows.
The department documents the “work in areas of excessive noise” in the position information – in the PeopleSoft position information for positions with a number OR – on the INOP form for individuals not on a position.
After making a job offer, – Departments in the Gainesville area contact – the UF OCCMED Clinic for a preplacement health assessment and – the Speech and Hearing Clinic for a baseline audiogram. – Departments outside the Gainesville area contact – a local provider for the preplacement health assessment and – a local audiologist or the EH&S safety coordinator assigned to their area for the baseline audiogram.
The Speech and Hearing Clinic establishes a baseline audiogram as part of the preplacement health assessment and provides a copy to the employee and to the UF OCCMED Clinic. (Note: The EH&S off-campus safety coordinator provides baseline and annual audiograms for participating employees outside the Gainesville area.)
The UF OCCMED Clinic coordinates any required medical follow-up, keeps the audiogram on file in the individual’s medical record and records the evaluation status and due date in PeopleSoft.
Environmental Health and Safety monitors for compliance.
The department checks PeopleSoft for evaluation status and schedules annual audiograms.
The employee keeps all scheduled evaluation appointments or notifies the department in advance of the appointment for any required variations.
Current UF employees who are added to the Hearing Conservation Program must have a baseline audiogram established – by UF’s Speech and Hearing Clinic for those in the Gainesville area OR – by a local audiologist or the assigned EH&S safety coordinator for those outside the Gainesville area may be referred by the UF OCCMED Clinic for clinician evaluation/examination based on medical questionnaire and/or baseline audiogram records.
Costs
The cost of testing and training is borne by the Employing Division. Hearing protection device costs are the responsibility of the department employing the worker.
References
The Noise Manual, Revised 5th Edition, 2003, American Industrial Hygiene Association
NIOSH Criteria for a Recommended Standard, Occupational Noise Exposure, 1998, U.S. Department of Health and Human Services, Public Health Service, National Institute for Occupational Safety and Health.
U.S. Department of Labor, Occupational Safety and Health Administration. 29CFR1910.95, Occupational Noise Exposure Standard
