NOISE PROTECTION METHODS
The methods to be used to protect against the effects of noise can be grouped under three main headings.
Technical Protective Measures: Technical protective measures can be grouped under two headings : Design Methods and Personal Measures.
Design Method: It is the most important step in the struggle. Reducing the noise at the source is the most important way. Its purpose is to take protective measures to reduce noise at the source of noise and on the road where sound energy is emitted.
_ Arrangement of machine and machine layout according to the production process is the first step in the establishment plans.
_ To give importance to the selection of the latest technological products which will emit less noise in the selection of machines and machines,
_ Moving the machines and workbenches that make a lot of noise to the isolated parts separate from the working environment,
_ The floor covering in the work area is made of sound absorbing material,
_ Reducing the noise level caused by maintenance of machines and machines at regular intervals,
_ Your voice in the air use sound-absorbing materials to the extent possible,
_ Reducing the surface area of the vibrating parts,
_ Avoiding large surfaces near vibrating objects (large surfaces resonate and generate more noise than the original source),
_ Replacing the noisy operation with less noisy operation
_ Increase the distance between the noise source and the person exposed to it
_ To cover or make the places where sound can pass and reflect like walls, ceilings and floors with or with sound absorbing material,
b) Personal Protective Measures: These types of protective measures include earplugs and earplugs developed to protect people working in noise from noise. That is, to prevent noise in the person exposed to noise.
_ Isolating the person who is exposed to noise,
_ Use personal protection,
Medical Protective Measures: Medical protective measures can be examined in two parts.
a) Employment Inspections: The audits of the persons who will work in noise-risk works should be subjected to a full audiometric examination and should be included in the health file. The purpose of such an examination is not to prevent the person from being more affected by the risk (such as preventing a person with dyspnea from working in a dusty environment), as with other risks, and to ensure that subsequent health damages are examined by the person's employment status. Partial or complete deafness during work-up examination is an advantage for noise-related hearing loss in such noisy jobs. It is seen that the deaf ear of a person with a conductive loss in one ear is not affected by the noise and the sound ear is affected. Therefore, it should be emphasized that deaf citizens for noisy workplaces are employees who are not considered disabled and should be called in particular.
b) Periodic Inspections: In these examinations, instead of a full audiometric examination, this audiometric examination, which is performed at 4000 Hz and 8000 Hz hearing frequencies, does not cover low frequencies. What is the initial loss of noise at 4000Hz from the detected hearing levels; most importantly, the first frequency of speech frequencies affected by noise 2000 Hz. The level of hearing in the state can be easily seen.
Organizational Measures: Certain rest periods of hearing loss due to noise
provided that it can be prevented in the previous chapters. The limit value is 90 dB (A), which is accepted as the limit value in order to avoid hearing loss, and half of the exposure time when the noise level increases by 95 dB (A) according to another group of standards. That is, when the noise level is 95 dB (A), the exposure time should be 2 hours and when it is 100 dB (A) the exposure time should be 1 hour.
_ Reduce the duration of exposure to noise or operate in noisy places with ratosyon (administrative control)
_ Changing the work schedule
However, this method is purely conceptual and is not a preferred method in practice.
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