Factory And Machinery (noise Exposure) Regulations.pptx
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FACTORY AND MACHINERY (NOISE EXPOSURE) REGULATIONS 1989 NOISE IS A SENSATION OF ACOUSTIC WAVES ; UNPLEASANT, UNNWANTED DISTURBING SOUND
• • • •
Permissible exposure limit (PEL) : 90db (A) 8-hr TWA i.e heavy truck, construction sites, chainsaw Action level (AL) : 85db (A) 8-hr TWA ; start taking precaution Max 115db (A) at any time Impulsive nose (sudden burst of noise)mwith peak level not exceeding 140db i.e jet engine/gunshot
HEARING PROTECTION DEVICES • Earplug and muffs that rated with NRR (Noise Reduction Rating) • NRR is a measure of how much noise is filtered out
• • • •
Permissible exposure limit (PEL) : 90db (A) 8-hr TWA i.e heavy truck, construction sites, chainsaw Action level (AL) : 85db (A) 8-hr TWA ; start taking precaution Max 115db (A) at any time Impulsive nose (sudden burst of noise)mwith peak level not exceeding 140db i.e jet engine/gunshot
HEARING PROTECTION DEVICES • Earplug and muffs that rated with NRR (Noise Reduction Rating) • NRR is a measure of how much noise is filtered out
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