Noise to 85dB intermittent operations need to wear protective equipment
Basically, the business environment 8 hours equivalent continuous A sound level is greater than 80dB when the need for staff noise related to occupational health checks, more than 85 when the need to be equipped with earplugs and other personal protective equipment.
In the course of occupational disease certification only workers engaged in noise operations have been deafened to be diagnosed as occupational noise deafness. (A), the limit of the equivalent sound level of the non-steady state noise is 85dB (A); the working day is not 5 days, and the daily limit is 8 days, and the steady-state noise limit is 85dB (A) Calculate the 40h equivalent sound level with a limit of 85 dB (A).
Noise up to 80dB constitute occupational hazards.
From the point of view of occupational hygiene, there is a sound that is detrimental to hearing, is harmful to health, or has other hazards, and 8h / d or 40h / week noise exposure A equivalent sound level ≥80dB is called noise.
