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Head protection TECHNICAL INFORMATION HEARING PROTECTION 1RLVHUHODWHGKHDULQJORVVLVWKHPRVWFRPPRQRFFXSDWLRQDOGLVHDVHLQ(XURSHDQG1RUWK$PHULFDDFFRXQWLQJIRUDOPRVWRQHWKLUGRIDOOZRUNUHODWHGLOOQHVVHV7KHVHGLVRUGHUVFDQOHDG WRORQJODVWLQJHↂHFWVFDXVLQJVWUHVVIDWLJXHRULVRODWLRQWKDWVLJQLↅFDQWO\LQFUHDVHVWKHULVNRIZRUNUHODWHGDFFLGHQWVFDXVHGE\RWKHUIDFWRUV+HDULQJORVVLVLUUHYHUVLEOHDQGRIWHQGHWHFWHG ODWHVR33(FRYHULQJWKLVULVNLVFODVVLↅHGDV&DWHJRU\,,, THE EAR AND SOUND 3 4 5 Strong 6 1 8 Low High pitched 2 Low pitched 7 1RLVHDVDYLEUDWRU\SKHQRPHQRQLV&KDUDFWHULVHGE\ • Its intensity LQGHFLEHOV>G%@ FRUUHVSRQGVWRWKHDPSOLWXGHRIWKHYLEUDWLRQVHPLWWHGE\ WKHVRXQGVRXUFHG%FRUUHVSRQGVWRWKHPLQLPXPVRXQGOHYHODXGLEOHE\WKHKXPDQ HDU7KHSDLQWKUHVKROGLVG%DQGWKHHDUFDQEHGDPDJHGIURPG% • Its frequency LQ+HUW]>+]@ ZKLFKZLOOGHↅQHWKHSHUFHLYHGKHLJKW7KHKLJKHUWKH IUHTXHQF\DQGWKHKLJKHUSLWFKHGWKHVRXQGWKHORZHULWLVDQGWKHORZHUSLWFKHGLWZLOOEH 7KHKXPDQHDULVDEOHWRSHUFHLYHVRXQGVDWIUHTXHQFLHVEHWZHHQ+] YHU\ORZSLWFK DQG+] YHU\KLJKSLWFK • Its duration and its variationZKLFKPDNHVLWSRVVLEOHWRGLↂHUHQWLDWHYHU\EULHIVRXQGV RIDGXUDWLRQLQWKHRUGHURIDVHFRQGVXFKDVLPSXOVHQRLVHV DVKRWLPSDFWV RIVRXQGV WKDWKDYHORQJHUGXUDWLRQV KRXUVRUDGD\ IRUZKLFKLWLVLPSRUWDQWWRFRQVLGHUWKH resulting dose of noise received. . 9 1 Pinna 2 Ear canal 3 Small bones 4 Anvil 5 Hammer 6 Stirrup 7 Eardrum 8 Auditory nerve 9 Cochlea 7KHHDUFDQEHEURNHQGRZQLQWRWKUHHGLVWLQFWSDUWV • The outer ear consisting of the horn and the ear canal • The middle earEHWZHHQWKHHDUGUXPDQGWKHLQQHUHDU,WLVↅOOHGZLWKDLUDQGDOORZV XVLQJWKHRVVLFOHVWRWUDQVIRUPWKHDHULDOYLEUDWLRQVLQWRVWUXFWXUHERUQHYLEUDWLRQVWKDW FDQEHDQDO\]HGE\WKHLQQHUHDU • The inner earWKHKHDUWRIWKHDXGLWRU\V\VWHPFRQVLVWLQJRIDFDYLW\ↅOOHGZLWKOLTXLG FRQWDLQLQJWKHFRFKOHDZKHUHWKHERG\RI&RUWLLVIRXQG:LWKLQLWWKHYLEUDWLRQVRIWKHOLTXLG WUDQVPLWWHGWRWKHRVVLFOHVDUHSLFNHGXSE\WKHKDLUFHOOVZKLFKVHOHFWWKHPE\IUHTXHQF\ 7KHLQIRUPDWLRQLVWKHQFRQGXFWHGE\WKHDXGLWRU\QHUYHWRWKHFHUHEUDOFRUWH[ZKLFKFDQ interpret it. DB(A) HOW TO PROTECT YOURSELF? 7KHKXPDQHDUKDVDSDUWLFXODUVHQVLWLYLW\WRHDFKIUHTXHQF\UDQJH$WPRGHUDWHVRXQG OHYHOVLWLVOHVVVHQVLWLYHWRORZSLWFKHGVRXQGV7RUHSUHVHQWWKLVSDUWLFXODUVHQVLWLYLW\WKH QRLVHPHDVXUHPHQWVDQGVWDQGDUGVXVHDZHLJKWLQJRIWKHPHDVXUHGVRXQGOHYHOVFDOOHG ZHLJKWLQJ$7KHWKXVZHLJKWHGGHFLEHOVDUHGHQRWHGG% $ To choose the correct product for hearing protection. • Identify the nature of the noise:VWDEOHↆXFWXDWLQJLQWHUPLWWHQWSXOVH • Measure the noise at the working station: LQWHQVLW\ G% DQGYROXPH +] • Determine the exposure time • Calculate the reduction QHFHVVDU\WRUHWXUQRQDQDFFHSWDEOHDPELHQWOHYHO VHH Directive 2003/10/CE). Requirements Directive 2003/10/EC: Minimum requirements for the protection of workers against the risks related to noise exposure 8 hours exposure time at * 85 dB(A) KRXUVH[SRVXUHWLPH at * 80 dB(A) and < 85 dB(A) KRXUVH[SRVXUHWLPH at > 75 dB(A) and < 80 dB(A) Obligatory hearing protection +HDULQJSURWHFWRUVDYDLODEOHWR WKHZRUNHU +HDULQJSURWHFWLRQ UHFRPPHQGHG 7KHSHUIRUPDQFHRIWKHKHDULQJSURWHFWRU LWVDWWHQXDWLRQOHYHO PXVWEHDGDSWHGWRWKHULVN DVVHVVPHQWRIWKHZRUNSODFH,WVKRXOGEULQJWKHQRLVHOHYHOWRDOHYHOWKDWLVQRWKDUPIXO WRKHDOWKZKLOHDYRLGLQJRYHUSURWHFWLRQZRXOGFXWWKHRSHUDWRUIURPKLVHQYLURQPHQW ZDUQLQJVFRPPXQLFDWLRQ REGULATORY DAILY DOSE AUTHORISED ACCORDING TO THE SOUND LEVEL: Continuous sounds Impulse sounds Equivalent continuous sound pressure level in dB (A) 85 dB(A) 91 dB(A) 100 dB(A) 112 dB(A) Daily exposure duration equivalent to an exposure of 85 dB 8 hours 2 hours PLQXWHV PLQXWH 3HDNVRXQGSUHVVXUHOHYHOLQG% 135 dB 115 dB 95 dB 90 dB /LPLWHGQXPEHURISXOVHVRUVKRFNVIRUKRXUV 1 100 10 000 30 000 www.deltaplus.eu 359
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