You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Maximum audible tolerance is: and explain in detail?
A noise of 90 db, 8hrs a day for 5 days/week is maximum safe limit. No exposure in excess of 115 db is permitted. No impulse noise of intensity > 140 lb is permitted. Persons working in area where noise exceeds 85 db should have pre employment and annual audiograms. Ear plugs offer protection up to 35db and to be used where noise exceeds 85 db.