Work related hearing loss is one of the most widespread yet preventable workplace injuries. Continual exposure to noise from machinery, tools, traffic, and general workplace activity can cause significant and irreversible hearing loss.
Hearing loss has a dramatic impact on the quality of life and may contribute to other safety problems including lack of awareness and reduced concentration. Appropriately designed and fitted ear protection will keep industrial noise below harmful levels. The choice of the appropriate hearing protection device for each job is also highly important.
What does SLC80 mean?
SLC80 [Sound Level Conversion] – The SLC80 is a rating number used in Australia and New Zealand. This number is the level of protection achievable by 80% of the test subjects in laboratory testing. During the test procedure, the hearing protection device is subjected to physical forces, stretching, heating and concussion - to simulate real wearing conditions over a period of time. Depending on the level of attenuation (or reduction in sound), a Class rating is assigned to the protector.
A Class 1 protector may be used in noise up to 90 dBA, a Class 2 protector to 95 dBA, a Class 3 protector to 100 dBA, and so on in 5 dB increments. Most of the time, the packaging will show the SLC80, followed by the classification (i.e. SLC80 27, Class 5).
How do I choose my hearing protection?
Choosing the right hearing protection depends on various factors such as level of noise in your workplace, your level of comfort with various items, and the suitability of the ear protection for both the worker and the environment. Most importantly, hearing protection should provide the desired noise reduction.
If the noise exposure is occasional, safety earmuffs are generally better as they are easier to put on and take off.
Earplugs are more low profile, and can be a better option when wearing other PPE such as safety glasses or respirators.
What types of hearing protectors are available?
Safety Earplugs – earplugs are inserted in the ear canal. Different types are available including premoulded, moldable, rolldown earplugs, and push in earplugs.
Safety Earmuffs – earmuffs consist of sound-attenuating material and soft ear cushions that fit around the ear, and hard outer cups. They are held together by headband. Earmuffs suppress unwanted noise by completely covering the outer ear to prevent noise from reaching the inner ear. Earmuffs are generally available in three configurations; Headband, Hard Hat Attachable and neckband.
Exposing yourself to high decibel environments can result in permanent hearing loss. It is important to protect yourself with the proper hearing protection.
If you have questions about any of the hearing protection products on our website, please feel free to call Southland’s customer service department at 1800 77 22 91. Our staff is dedicated to keeping your hearing safe and sound.