How to protect oneself from positions with excessive noise levels?
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This post was last edited by The wise are enlightened on 2016-5-27 20:47. A friend who manages a machinery manufacturing factory is facing a problem and is seeking help. Background: The noise levels in the workshop’s grinding and stamping areas are above acceptable limits. Although workers are provided with necessary protective equipment such as earplugs and safety glasses, hearing damage still occurs. Questions: 1. What are some good methods for protecting against noise in workshops? 2. Are there any better personal protective equipment for reducing noise exposure? @DesertFish @steven2012 @ever2008 @ClearSkiesOverTheDesert @LuoMi @nashhengshui @l921934356 @l921934356 @LiWenchengg @reading_wyc @StudentInTheSeaOfKnowledge @SW0201
Earplugs provide only average noise reduction, around 10%; while ear muffs offer slightly better results, they are not sensitive enough to detect warnings from people walking or vehicles, thus also increasing safety risks. Are there any other better methods?
The grinding room is one of the methods. However, in machinery manufacturing plants, the equipment in the workshops – with diameters of 5,000 to 6,000 millimeters, lengths of dozens of meters, and weights of dozens or hundreds of tons – cannot be moved around at will. Polishing and cutting can only be carried out in the workshop; noise cannot be controlled. Can more unique protective measures be adopted in terms of personal PPE?
Can’t it be made as something that can be moved and removed? active
I wonder if you’ve ever seen laser grinding for rust removal; the noise it makes is very low
Use earplugs first, and add ear muffs on top; that should give better results
Earplugs + ear muffs,.... personal protection; Mobile grinding booth,.... environmental protection
In the design of our occupational disease protection facilities, we first perform rough calculations to determine the equivalent sound level, and then select the appropriate model of hearing protection devices in accordance with the \"Guidelines for the Selection of Hearing Protection Devices\" (GB/T23466-2009). In accordance with the requirements of the \"Specifications for the Selection of Personal Protective Equipment\" (GB11651-2008), the equivalent model for industrial noise-canceling earplugs is: 3M-1100 ； The parameter is: volume attenuation of 29dB. The model of the ear pads is: 3M1427 ； The parameter is: NRR27dB. Replace noise-canceling earplugs every three months