The basic requirements generated from this OSHA standard for hearing conservation programs are as follows: Hearing hazards monitoring Engineering and administrative controls Audiometric evaluation Personal hearing protection devices Education and motivation Record keeping Program evaluation 11 want Doctors 00 meal professionals consider In making tatterdemalions AT causal relationships relating to hearing loss? In an area survey, environmental noise levels are measured using a sound level meter to identify work areas where exposures are above hazardous levels.
Dosimeter involves the use of body worn instruments (dosimeters) to monitor an employee’s noise exposure over the work shift. Engineering surveys typically employ more sophisticated acoustical equipment in addition to sound level meters. These measurements are used to assess options for applying engineering controls. 12. The advantage of the ANSI methods are: conservation program is ineffective. Results of tests are compared in sequence. For example results of year 4 are compared with results of year 3. The results of the earlier test are used as a baseline for comparison.
Test results from several employees in a given work unit are examined individually and compared with past results sequentially. If enough employees show hearing loss, the conclusion may be that the work unit’s hearing conservation program is ineffective. 13. Define the following terms: follow-up, noise survey, audiometric testing. Follow up: is critical. Failure to take prompt corrective action at the first sign of hearing loss can lead to permanent debilitating damage Noise surveys involve measuring noise bevels at different locations in the workplace.
A sound level meter produces an immediate reading that represents the noise level at a specific instant in time. A dosimeter provides a time weighted average over a period of time such as one complete work shift. Audiometric testing: measures the hearing threshold of employees. For employees found to have a standard threshold shift – a loss of 10 dab or more averaged at 2000, 3000, and 4000 Hz’s in either ear – the employer is required to fill out an OSHA 200 form in which the loss is recorded as a work time illness. 14.
List three appropriate follow-up activities when an audiometric test reveals earning loss in an employee. Administering a retest to verify the hearing loss Changing or improving the type of personal protection used Conducting a noise survey in the employer’s work area to determine if engineering controls are sufficient. 15. Differentiate between engineering and administrative controls. Engineering controls: are steps taken, other than administrative or personnel protection procedures, to reduce the sound level at the source or within the hearing zone of workers.
All of these controls are designed to reduce noise at the source, along its path, or at ten receiver. Ameliorative controls: are controls Tanat reduce ten exposure of employees to noise rather than reducing the noise. Administrative controls should be considered a second level approach with engineering controls given top priority. 16. What is HAVE? How can it be prevented? The most common vibration related problem is known as hand-arm vibration syndrome (HAVE). Prevention strategies: Purchase low vibration tools.
Limit employee exposure: NOSH recommends no more than 4 hours per day, two days per week. Change employee work habits: wear properly fitting thick gloves that can partially absorb vibration, take periodic breaks (at least 10 minutes each hour), SE a loose grip on the tool and hold it away from the body, keep tools properly maintained (replace vibration absorbing pads regularly), keep warm, and use vibration absorbing floor mats and seat covers as appropriate 17. Explain the four classifications of Hips that are widely used.
The following 4 classifications of Hips (hearing protection devices) are widely used: enclosures, ear plugs, super aural caps, and earmuffs. Enclosures are devices that completely cover the employees head, much like helmets. Earplugs (aural) are devices that fit into the ear canal. Supernatural caps fit over the external edge of the ear canal and are held in place by a headband. Earmuffs cover the entire ear with a cushioned cup that is attached to a headband. Earplugs and earmuffs are able to reduce noise by 20 to 30 db.