{"id":8649,"date":"2016-06-14T13:06:17","date_gmt":"2016-06-14T06:06:17","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=8649"},"modified":"2026-09-04T10:51:01","modified_gmt":"2026-09-04T03:51:01","slug":"nut-bit-tai-chong-on-chat-luong-tai-binh-duong","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/nut-bit-tai-chong-on-chat-luong-tai-binh-duong\/","title":{"rendered":"C\u00e1ch Ch\u1ecdn N\u00fat B\u1ecbt Tai Ch\u1ed1ng \u1ed2n Theo M\u1ee9c \u1ed2n \u0110o \u0110\u01b0\u1ee3c"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn \u0111\u01a1n h\u00e0ng n\u00fat b\u1ecbt tai \u0111\u01b0\u1ee3c ch\u1ed1t theo gi\u00e1 v\u00e0 theo con s\u1ed1 in to nh\u1ea5t tr\u00ean bao b\u00ec. K\u1ebft qu\u1ea3 l\u00e0 nhi\u1ec1u nh\u00e0 m\u00e1y ph\u00e1t \u0111\u1ee7 n\u00fat cho c\u00f4ng nh\u00e2n m\u00e0 m\u1ee9c \u1ed3n t\u1edbi tai v\u1eabn v\u01b0\u1ee3t ng\u01b0\u1ee1ng, ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i, gi\u1ea3m \u1ed3n qu\u00e1 tay khi\u1ebfn ng\u01b0\u1eddi \u0111\u1ee9ng m\u00e1y kh\u00f4ng nghe \u0111\u01b0\u1ee3c c\u00f2i xe n\u00e2ng. B\u00e0i n\u00e0y \u0111i theo tr\u00ecnh t\u1ef1 ng\u01b0\u1ee3c v\u1edbi th\u00f3i quen mua h\u00e0ng: b\u1eaft \u0111\u1ea7u t\u1eeb s\u1ed1 \u0111o t\u1ea1i v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c, quy \u0111\u1ed5i ra m\u1ee9c gi\u1ea3m \u1ed3n c\u1ea7n c\u00f3, r\u1ed3i m\u1edbi ch\u1ecdn s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch Ch\u1ecdn N\u00fat B\u1ecbt Tai Ch\u1ed1ng \u1ed2n B\u1eaft \u0110\u1ea7u T\u1eeb S\u1ed1 \u0110o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111\u1ea7u ti\u00ean kh\u00f4ng ph\u1ea3i l\u00e0 g\u1ecdi nh\u00e0 cung c\u1ea5p m\u00e0 l\u00e0 \u0111o m\u1ee9c \u1ed3n t\u1ea1i t\u1eebng v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c. M\u1ed9t x\u01b0\u1edfng th\u01b0\u1eddng c\u00f3 nhi\u1ec1u v\u00f9ng \u1ed3n kh\u00e1c nhau t\u1edbi h\u01a1n m\u01b0\u1eddi \u0111\u1ec1 xi ben, v\u00e0 ch\u00eanh l\u1ec7ch \u0111\u00f3 \u0111\u1ee7 \u0111\u1ec3 \u0111\u1ed5i h\u1eb3n nh\u00f3m s\u1ea3n ph\u1ea9m c\u1ea7n d\u00f9ng. S\u1ed1 \u0111o n\u00ean ghi theo v\u1ecb tr\u00ed \u0111\u1ee9ng th\u1eadt c\u1ee7a ng\u01b0\u1eddi th\u1ee3, \u1edf t\u1ea7m tai, trong l\u00fac m\u00e1y ch\u1ea1y ch\u1ebf \u0111\u1ed9 n\u1eb7ng nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 \u0111o n\u00ean c\u00f3 hai con s\u1ed1 cho m\u1ed7i v\u1ecb tr\u00ed: m\u1ee9c theo thang A v\u00e0 m\u1ee9c theo thang C. Thang A m\u00f4 ph\u1ecfng c\u00e1ch tai ng\u01b0\u1eddi c\u1ea3m nh\u1eadn, d\u00f9ng \u0111\u1ec3 so v\u1edbi ng\u01b0\u1ee1ng cho ph\u00e9p. Thang C gi\u1eef l\u1ea1i ph\u1ea7n \u00e2m tr\u1ea7m, v\u00e0 \u0111\u00e2y l\u00e0 con s\u1ed1 c\u1ea7n thi\u1ebft khi t\u00ednh hi\u1ec7u qu\u1ea3 c\u1ee7a thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 th\u00ednh gi\u00e1c. Thi\u1ebfu thang C th\u00ec ph\u00e9p quy \u0111\u1ed5i \u1edf m\u1ee5c sau ch\u1ec9 l\u00e0 \u01b0\u1edbc l\u01b0\u1ee3ng th\u00f4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 b\u1ea3ng \u0111o r\u1ed3i th\u00ec b\u00e0i to\u00e1n ch\u1ecdn s\u1ea3n ph\u1ea9m tr\u1edf n\u00ean r\u00f5 r\u00e0ng. V\u00f9ng \u1ed3n v\u1eeba ph\u1ea3i c\u1ea7n m\u1ee9c gi\u1ea3m th\u1ea5p v\u00e0 \u01b0u ti\u00ean s\u1ef1 tho\u1ea3i m\u00e1i; v\u00f9ng \u1ed3n cao c\u1ea7n m\u1ee9c gi\u1ea3m l\u1edbn h\u01a1n; v\u00f9ng \u1ed3n r\u1ea5t cao c\u1ea7n t\u00ednh t\u1edbi ph\u01b0\u01a1ng \u00e1n \u0111eo hai l\u1edbp v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian ti\u1ebfp x\u00fac. C\u00e1ch ph\u00e2n nh\u00f3m n\u00e0y c\u0169ng gi\u00fap l\u1eadp \u0111\u1ecbnh m\u1ee9c mua theo t\u1eebng khu thay v\u00ec mua m\u1ed9t m\u00e3 cho c\u1ea3 nh\u00e0 m\u00e1y.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2016\/05\/nut-bit-tai-chong-on-fep-03-malaysia-bvt0004_1.jpg\" alt=\"N\u00fat b\u1ecbt tai ch\u1ed1ng \u1ed3n m\u00e3 FEP-03 c\u00f3 d\u00e2y n\u1ed1i \u0111eo qua c\u1ed5\" loading=\"lazy\" width=\"500\" height=\"500\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ba Nh\u00f3m N\u00fat B\u1ecbt Tai V\u00e0 C\u00e1ch D\u00f9ng T\u1eebng Nh\u00f3m<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00f3m b\u1ecdt polyurethane n\u1edf ch\u1eadm \u0111\u01b0\u1ee3c b\u00f3p nh\u1ecf, nh\u00e9t v\u00e0o \u1ed1ng tai r\u1ed3i t\u1ef1 n\u1edf l\u1ea5p \u0111\u1ea7y. \u0110\u00e2y l\u00e0 nh\u00f3m cho m\u1ee9c gi\u1ea3m \u1ed3n cao nh\u1ea5t v\u00e0 gi\u00e1 th\u1ea5p nh\u1ea5t, nh\u01b0ng ch\u1ec9 d\u00f9ng m\u1ed9t l\u1ea7n ho\u1eb7c v\u00e0i l\u1ea7n r\u1ed3i b\u1ecf. B\u1ecdt x\u1ed1p gi\u1eef l\u1ea1i b\u1ee5i v\u00e0 d\u1ea7u r\u1ea5t t\u1ed1t, n\u00ean khi b\u1ea9n th\u00ec thay ch\u1ee9 kh\u00f4ng r\u1eeda.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00f3m silicone ho\u1eb7c cao su \u0111\u1ecbnh h\u00ecnh d\u1ea1ng th\u00f4ng, d\u1ea1ng c\u00e1nh th\u00ec t\u00e1i s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c: r\u1eeda s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc x\u00e0 ph\u00f2ng lo\u00e3ng, \u0111\u1ec3 kh\u00f4 l\u00e0 d\u00f9ng ti\u1ebfp. V\u1eadt li\u1ec7u m\u1ec1m d\u1ebbo n\u00ean kh\u00f4ng g\u00e2y \u0111au khi \u0111eo th\u1eddi gian d\u00e0i, ph\u00f9 h\u1ee3p ng\u01b0\u1eddi \u0111eo li\u00ean t\u1ee5c c\u1ea3 ca. Chi ph\u00ed d\u00e0i h\u1ea1n th\u1ea5p h\u01a1n nh\u00f3m b\u1ecdt n\u1ebfu qu\u1ea3n l\u00fd v\u1ec7 sinh t\u1ed1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00f3m c\u00f3 c\u00e1n c\u1ea7m c\u00f3 ph\u1ea7n c\u00e1n c\u1ee9ng cho ph\u00e9p \u0111eo m\u00e0 kh\u00f4ng ch\u1ea1m tay v\u00e0o ph\u1ea7n nh\u00e9t v\u00e0o tai. \u0110\u00e2y l\u00e0 nh\u00f3m r\u1ea5t \u0111\u00e1ng gi\u00e1 \u1edf x\u01b0\u1edfng c\u01a1 kh\u00ed, \u0111\u00fac, s\u01a1n, n\u01a1i tay c\u00f4ng nh\u00e2n lu\u00f4n d\u00ednh d\u1ea7u m\u1ee1 v\u00e0 b\u1ee5i kim lo\u1ea1i, nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y vi\u00eam \u1ed1ng tai ngo\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To\u00e0n b\u1ed9 ba nh\u00f3m \u0111\u1ec1u c\u00f3 b\u1ea3n n\u1ed1i d\u00e2y v\u00e0 b\u1ea3n r\u1eddi. B\u1ea3n n\u1ed1i d\u00e2y ti\u1ec7n cho ng\u01b0\u1eddi ra v\u00e0o v\u00f9ng \u1ed3n nhi\u1ec1u l\u1ea7n trong ca. B\u1ea3n r\u1eddi b\u1eaft bu\u1ed9c d\u00f9ng \u1edf n\u01a1i c\u00f3 tr\u1ee5c quay, b\u0103ng t\u1ea3i ho\u1eb7c chi ti\u1ebft cu\u1ed1n h\u1edf, v\u00ec s\u1ee3i d\u00e2y c\u00f3 th\u1ec3 b\u1ecb cu\u1ed1n v\u00e0o m\u00e1y. Nguy\u00ean t\u1eafc ng\u1eafn g\u1ecdn: c\u00f3 chi ti\u1ebft quay h\u1edf th\u00ec kh\u00f4ng d\u00f9ng d\u00e2y n\u1ed1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ecdc Ch\u1ec9 S\u1ed1 SNR V\u00e0 NRR Tr\u00ean Bao B\u00ec<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n ch\u00e2u \u00c2u EN 352-2 l\u00e0 ph\u1ea7n d\u00e0nh ri\u00eang cho n\u00fat tai, c\u00f2n EN 352-1 d\u00e0nh cho ch\u1ee5p tai. S\u1ea3n ph\u1ea9m \u0111\u1ea1t chu\u1ea9n c\u00f4ng b\u1ed1 k\u00e8m ch\u1ec9 s\u1ed1 SNR, t\u1ee9c m\u1ee9c gi\u1ea3m \u1ed3n \u0111\u01a1n tr\u1ecb t\u00ednh b\u1eb1ng \u0111\u1ec1 xi ben. C\u00e1ch d\u00f9ng ch\u1ec9 s\u1ed1 n\u00e0y l\u00e0 l\u1ea5y m\u1ee9c \u1ed3n \u0111o theo thang C t\u1ea1i v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c tr\u1eeb \u0111i SNR, ra m\u1ee9c \u1ed3n \u01b0\u1edbc t\u00ednh t\u1ea1i tai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NRR l\u00e0 ch\u1ec9 s\u1ed1 \u0111\u01a1n tr\u1ecb c\u1ee7a h\u1ec7 M\u1ef9, \u0111o theo ANSI S3.19 v\u00e0 t\u00ednh ra con s\u1ed1 cu\u1ed1i theo m\u1ed9t l\u1ed1i ri\u00eang, n\u00ean kh\u00f4ng c\u00f3 h\u1eb1ng s\u1ed1 n\u00e0o quy \u0111\u1ed5i \u0111\u01b0\u1ee3c NRR sang SNR hay ng\u01b0\u1ee3c l\u1ea1i. C\u00e1ch d\u00f9ng NRR c\u0169ng kh\u00e1c: OSHA h\u01b0\u1edbng d\u1eabn l\u1ea5y m\u1ee9c \u0111o theo thang A t\u1ea1i v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c r\u1ed3i tr\u1eeb \u0111i ph\u1ea7n NRR tr\u1eeb b\u1ea3y, t\u1ee9c ph\u1ea3i h\u1ea1 b\u1ea3y \u0111\u01a1n v\u1ecb kh\u1ecfi con s\u1ed1 in tr\u00ean h\u1ed9p tr\u01b0\u1edbc khi t\u00ednh. Khi so s\u00e1nh hai s\u1ea3n ph\u1ea9m, ph\u1ea3i so c\u00f9ng h\u1ec7 ch\u1ec9 s\u1ed1, kh\u00f4ng \u0111\u1eb7t th\u1eb3ng NRR c\u1ea1nh SNR r\u1ed3i k\u1ebft lu\u1eadn c\u00e1i n\u00e0o t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean c\u1ea1nh con s\u1ed1 \u0111\u01a1n tr\u1ecb, nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f2n c\u00f4ng b\u1ed1 ba gi\u00e1 tr\u1ecb theo d\u1ea3i t\u1ea7n cao, trung v\u00e0 th\u1ea5p. B\u1ed9 ba n\u00e0y h\u1eefu \u00edch khi ti\u1ebfng \u1ed3n t\u1ea1i x\u01b0\u1edfng l\u1ec7ch h\u1eb3n v\u1ec1 m\u1ed9t d\u1ea3i, ch\u1eb3ng h\u1ea1n ti\u1ebfng m\u00e1y n\u00e9n kh\u00ed x\u1ea3 r\u00edt \u1edf t\u1ea7n s\u1ed1 cao hay ti\u1ebfng m\u00e1y d\u1eadp \u1ea7m \u1edf t\u1ea7n s\u1ed1 th\u1ea5p. C\u00f9ng m\u1ed9t ch\u1ec9 s\u1ed1 \u0111\u01a1n tr\u1ecb nh\u01b0ng hai m\u1eabu c\u00f3 th\u1ec3 x\u1eed l\u00fd hai d\u1ea3i n\u00e0y kh\u00e1c h\u1eb3n nhau.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2017\/03\/nut-bit-tai-chong-on-EP1363.jpg\" alt=\"C\u1eb7p n\u00fat b\u1ecbt tai EP1363 d\u1ea1ng c\u00e1nh silicone k\u00e8m h\u1ed9p \u0111\u1ef1ng\" loading=\"lazy\" width=\"786\" height=\"570\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Quy \u0110\u1ed5i Ch\u1ec9 S\u1ed1 C\u00f4ng B\u1ed1 Ra M\u1ee9c Gi\u1ea3m \u1ed2n Th\u1ef1c T\u1ebf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc n\u00e0y l\u00e0 nguy\u00ean nh\u00e2n khi\u1ebfn nhi\u1ec1u ch\u01b0\u01a1ng tr\u00ecnh b\u1ea3o v\u1ec7 th\u00ednh l\u1ef1c kh\u00f4ng c\u00f3 k\u1ebft qu\u1ea3. Ch\u1ec9 s\u1ed1 c\u00f4ng b\u1ed1 \u0111\u01b0\u1ee3c \u0111o trong ph\u00f2ng th\u00ed nghi\u1ec7m, tr\u00ean ng\u01b0\u1eddi \u0111\u00e3 \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn \u0111eo ho\u00e0n h\u1ea3o, ng\u1ed3i y\u00ean. Hi\u1ec7n tr\u01b0\u1eddng kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n n\u00e0o trong ba \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch x\u1eed l\u00fd ph\u1ed5 bi\u1ebfn l\u00e0 chi\u1ebft gi\u1ea3m ch\u1ec9 s\u1ed1 tr\u01b0\u1edbc khi t\u00ednh. Vi\u1ec7n qu\u1ed1c gia v\u1ec1 an to\u00e0n v\u00e0 s\u1ee9c kho\u1ebb ngh\u1ec1 nghi\u1ec7p Hoa K\u1ef3 khuy\u1ebfn ngh\u1ecb h\u1ec7 s\u1ed1 chi\u1ebft gi\u1ea3m kh\u00e1c nhau theo ki\u1ec3u thi\u1ebft b\u1ecb, \u00e1p l\u00ean ph\u1ea7n NRR tr\u1eeb b\u1ea3y ch\u1ee9 kh\u00f4ng \u00e1p th\u1eb3ng l\u00ean con s\u1ed1 in tr\u1ea7n: ch\u1ee5p tai gi\u1eef l\u1ea1i ba ph\u1ea7n t\u01b0, n\u00fat b\u1ecdt n\u1edf ch\u1eadm gi\u1eef l\u1ea1i m\u1ed9t n\u1eeda, c\u00f2n c\u00e1c ki\u1ec3u n\u00fat kh\u00e1c ch\u1ec9 gi\u1eef l\u1ea1i ba m\u01b0\u01a1i ph\u1ea7n tr\u0103m. B\u1ed9 h\u1ec7 s\u1ed1 n\u00e0y g\u1eafn v\u1edbi h\u1ec7 NRR c\u1ee7a M\u1ef9, kh\u00f4ng \u0111em \u00e1p cho ch\u1ec9 s\u1ed1 SNR c\u1ee7a ch\u00e2u \u00c2u. Con s\u1ed1 nghe c\u00f3 v\u1ebb kh\u1eaft khe, nh\u01b0ng n\u00f3 ph\u1ea3n \u00e1nh \u0111\u00fang ch\u00eanh l\u1ec7ch gi\u1eefa ph\u00f2ng th\u1eed v\u00e0 nh\u00e0 x\u01b0\u1edfng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ea5y m\u1ed9t v\u00ed d\u1ee5 \u0111\u1ec3 th\u1ea5y kh\u00e1c bi\u1ec7t. V\u1ecb tr\u00ed \u0111o \u0111\u01b0\u1ee3c ch\u00edn m\u01b0\u01a1i b\u1ea3y \u0111\u1ec1 xi ben theo thang A, n\u00fat b\u1ecdt c\u00f4ng b\u1ed1 NRR ba m\u01b0\u01a1i. T\u00ednh th\u00f4 ki\u1ec3u l\u1ea5y ch\u00edn m\u01b0\u01a1i b\u1ea3y tr\u1eeb th\u1eb3ng ba m\u01b0\u01a1i th\u00ec m\u1ee9c t\u1ea1i tai c\u00f2n s\u00e1u m\u01b0\u01a1i b\u1ea3y, nghe r\u1ea5t an to\u00e0n. L\u00e0m \u0111\u00fang th\u00ec h\u1ea1 b\u1ea3y tr\u01b0\u1edbc, c\u00f2n hai m\u01b0\u01a1i ba, r\u1ed3i chi\u1ebft gi\u1ea3m m\u1ed9t n\u1eeda cho nh\u00f3m n\u00fat b\u1ecdt, m\u1ee9c gi\u1ea3m th\u1ef1c ch\u1ec9 c\u00f2n kho\u1ea3ng m\u01b0\u1eddi m\u1ed9t, v\u00e0 m\u1ee9c t\u1ea1i tai x\u1ea5p x\u1ec9 t\u00e1m m\u01b0\u01a1i s\u00e1u. Con s\u1ed1 th\u1ee9 hai m\u1edbi l\u00e0 con s\u1ed1 d\u00f9ng \u0111\u1ec3 ra quy\u1ebft \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i c\u0169ng ph\u1ea3i ki\u1ec3m. N\u1ebfu m\u1ee9c t\u1ea1i tai sau khi t\u00ednh b\u1ecb k\u00e9o xu\u1ed1ng d\u01b0\u1edbi kho\u1ea3ng b\u1ea3y m\u01b0\u01a1i \u0111\u1ec1 xi ben, ng\u01b0\u1eddi \u0111eo r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i b\u1ea3o v\u1ec7 qu\u00e1 m\u1ee9c: kh\u00f4ng nghe \u0111\u01b0\u1ee3c ti\u1ebfng g\u1ecdi c\u1ea3nh b\u00e1o, c\u00f2i xe n\u00e2ng hay ti\u1ebfng m\u00e1y ch\u1ea1y b\u1ea5t th\u01b0\u1eddng. Ch\u1ecdn ch\u1ec9 s\u1ed1 cao nh\u1ea5t c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ecdn t\u1ed1t nh\u1ea5t, v\u00e0 \u0111\u00e2y l\u00e0 l\u1ed7i th\u01b0\u1eddng g\u1eb7p \u1edf c\u00e1c \u0111\u01a1n h\u00e0ng \u0111\u1eb7t theo c\u1ea3m t\u00ednh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e0i li\u1ec7u tham chi\u1ebfu v\u1ec1 m\u1ee9c \u1ed3n ngh\u1ec1 nghi\u1ec7p c\u00f3 th\u1ec3 xem t\u1ea1i chuy\u00ean m\u1ee5c <a href=\"https:\/\/www.osha.gov\/noise\" rel=\"nofollow noopener\" target=\"_blank\">occupational noise exposure c\u1ee7a OSHA<\/a> v\u00e0 trang <a href=\"https:\/\/www.cdc.gov\/niosh\/noise\/about\/index.html\" rel=\"nofollow noopener\" target=\"_blank\">noise and hearing loss c\u1ee7a NIOSH<\/a>. Hai ngu\u1ed3n n\u00e0y tr\u00ecnh b\u00e0y c\u1ea3 ng\u01b0\u1ee1ng ti\u1ebfp x\u00fac l\u1eabn c\u00e1ch t\u00ednh hi\u1ec7u qu\u1ea3 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bu\u1ed5i Ki\u1ec3m \u0110\u1ed9 Kh\u00edt T\u1ea1i X\u01b0\u1edfng V\u00e0 C\u00e1ch \u0110eo \u0110\u00fang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t chi\u1ebfc n\u00fat c\u00f3 ch\u1ec9 s\u1ed1 cao nh\u01b0ng nh\u00e9t h\u1eddi ch\u1ec9 cho hi\u1ec7u qu\u1ea3 b\u1eb1ng m\u1ed9t ph\u1ea7n nh\u1ecf so v\u1edbi c\u00f4ng b\u1ed1. V\u1edbi n\u00fat b\u1ecdt, thao t\u00e1c \u0111\u00fang g\u1ed3m ba nh\u1ecbp.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>V\u00ea nh\u1ecf: l\u0103n n\u00fat gi\u1eefa hai ng\u00f3n tay s\u1ea1ch th\u00e0nh h\u00ecnh tr\u1ee5 nh\u1ecf, kh\u00f4ng \u0111\u1ec3 n\u1ebfp g\u1ea5p.<\/li>\n<li>K\u00e9o v\u00e0nh tai: \u0111\u01b0a tay v\u00f2ng qua \u0111\u1ec9nh \u0111\u1ea7u k\u00e9o v\u00e0nh tai l\u00ean v\u00e0 ra sau \u0111\u1ec3 \u1ed1ng tai th\u1eb3ng ra, r\u1ed3i \u0111\u1ea9y n\u00fat v\u00e0o s\u00e2u.<\/li>\n<li>Gi\u1eef t\u1ea1i ch\u1ed7: gi\u1eef ng\u00f3n tay \u0111\u00e8 nh\u1eb9 kho\u1ea3ng hai m\u01b0\u01a1i t\u1edbi ba m\u01b0\u01a1i gi\u00e2y cho n\u00fat n\u1edf h\u1ebft.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch t\u1ef1 ki\u1ec3m nhanh: b\u1ecbt l\u00f2ng b\u00e0n tay l\u00ean hai tai r\u1ed3i b\u1ecf ra. N\u1ebfu \u00e2m thanh xung quanh g\u1ea7n nh\u01b0 kh\u00f4ng \u0111\u1ed5i th\u00ec n\u00fat \u0111\u00e3 k\u00edn; n\u1ebfu th\u1ea5y r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t, n\u00fat \u0111ang h\u1edf v\u00e0 c\u1ea7n \u0111eo l\u1ea1i. \u0110\u00e2y l\u00e0 b\u00e0i ki\u1ec3m n\u00ean d\u1ea1y cho c\u00f4ng nh\u00e2n ngay trong bu\u1ed5i hu\u1ea5n luy\u1ec7n \u0111\u1ea7u ca.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede quy m\u00f4 nh\u00e0 m\u00e1y, n\u00ean t\u1ed5 ch\u1ee9c m\u1ed9t bu\u1ed5i ki\u1ec3m \u0111\u1ed9 kh\u00edt \u0111\u1ecbnh k\u1ef3 thay v\u00ec tin v\u00e0o c\u1ea3m nh\u1eadn c\u1ee7a t\u1eebng ng\u01b0\u1eddi. C\u00e1ch l\u00e0m \u0111\u01a1n gi\u1ea3n nh\u1ea5t m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb: chia nh\u00f3m m\u01b0\u1eddi ng\u01b0\u1eddi, cho t\u1eebng ng\u01b0\u1eddi \u0111eo r\u1ed3i t\u1ef1 \u0111\u1ecdc to m\u1ed9t c\u00e2u trong khi nh\u00f3m b\u00ean c\u1ea1nh \u0111\u1ee9ng c\u00e1ch ba m\u00e9t n\u00f3i chuy\u1ec7n b\u00ecnh th\u01b0\u1eddng. Ng\u01b0\u1eddi \u0111eo \u0111\u00fang s\u1ebd nghe gi\u1ecdng m\u00ecnh vang v\u00e0 tr\u1ea7m h\u1eb3n trong \u0111\u1ea7u, c\u00f2n ti\u1ebfng b\u00ean ngo\u00e0i m\u1edd \u0111i r\u00f5 r\u1ec7t. Ai kh\u00f4ng th\u1ea5y hi\u1ec7u \u1ee9ng \u0111\u00f3 th\u00ec \u0111eo l\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c k\u00e8m tr\u1ef1c ti\u1ebfp.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 bu\u1ed5i ki\u1ec3m n\u00ean ghi l\u1ea1i theo t\u00ean ng\u01b0\u1eddi, k\u00e8m m\u00e3 s\u1ea3n ph\u1ea9m v\u00e0 c\u1ee1 \u0111\u00e3 d\u00f9ng. Sau v\u00e0i \u0111\u1ee3t, b\u1ea3ng n\u00e0y cho th\u1ea5y r\u1ea5t nhanh m\u00e3 n\u00e0o kh\u00f4ng h\u1ee3p v\u1edbi ph\u1ea7n \u0111\u00f4ng v\u00e0 ai c\u1ea7n \u0111\u1ed5i sang c\u1ee1 kh\u00e1c. \u0110\u00f3 l\u00e0 d\u1eef li\u1ec7u c\u00f3 \u00edch h\u01a1n nhi\u1ec1u so v\u1edbi vi\u1ec7c \u0111\u1ebfm s\u1ed1 h\u1ed9p n\u00fat \u0111\u00e3 ph\u00e1t.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2018\/01\/nut-tai-honeywell.jpg\" alt=\"N\u00fat tai ch\u1ed1ng \u1ed3n Honeywell d\u1ea1ng b\u1ecdt n\u1edf ch\u1eadm m\u00e0u cam\" loading=\"lazy\" width=\"400\" height=\"400\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">V\u1ec7 Sinh, Thay Th\u1ebf V\u00e0 \u0110i\u1ec3m \u0110\u1eb7t Tr\u1ea1m C\u1ea5p Ph\u00e1t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e9t n\u00fat b\u1ea9n v\u00e0o \u1ed1ng tai l\u00e0 con \u0111\u01b0\u1eddng ng\u1eafn nh\u1ea5t d\u1eabn t\u1edbi vi\u00eam nhi\u1ec5m, v\u00e0 h\u1eadu qu\u1ea3 l\u00e0 c\u00f4ng nh\u00e2n b\u1ecf kh\u00f4ng \u0111eo n\u1eefa. V\u00e0i quy t\u1eafc d\u01b0\u1edbi \u0111\u00e2y gi\u1eef cho t\u1ec9 l\u1ec7 \u0111eo kh\u00f4ng t\u1ee5t gi\u1eefa ch\u1eebng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u00fat b\u1ecdt d\u00f9ng r\u1ed3i b\u1ecb b\u1ee5i b\u00e1m th\u00ec b\u1ecf, kh\u00f4ng gi\u1eb7t \u0111\u1ec3 d\u00f9ng l\u1ea1i v\u00ec s\u1ee3i b\u1ecdt m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i.<\/li>\n<li>N\u00fat silicone r\u1eeda b\u1eb1ng n\u01b0\u1edbc \u1ea5m pha x\u00e0 ph\u00f2ng nh\u1eb9, \u0111\u1ec3 kh\u00f4 t\u1ef1 nhi\u00ean, c\u1ea5t trong h\u1ed9p ri\u00eang c\u1ee7a t\u1eebng ng\u01b0\u1eddi. Kh\u00f4ng d\u00f9ng chung gi\u1eefa c\u00e1c ca.<\/li>\n<li>Thay khi n\u00fat b\u1ecb c\u1ee9ng, r\u00e1ch, \u0111\u1ed5i m\u00e0u, ho\u1eb7c khi d\u00e2y n\u1ed1i b\u1ecb \u0111\u1ee9t. Kh\u00f4ng bu\u1ed9c n\u1ed1i t\u1ea1m s\u1ee3i d\u00e2y \u0111\u00e3 \u0111\u1ee9t.<\/li>\n<li>\u0110\u1eb7t tr\u1ea1m c\u1ea5p ph\u00e1t ngay c\u1eeda v\u00e0o khu v\u1ef1c \u1ed3n thay v\u00ec \u1edf kho, v\u00ec ng\u01b0\u1eddi lao \u0111\u1ed9ng th\u01b0\u1eddng kh\u00f4ng quay ng\u01b0\u1ee3c \u0111\u01b0\u1eddng \u0111\u1ec3 l\u1ea5y \u0111\u1ed3 b\u1ea3o h\u1ed9.<\/li>\n<li>\u0110\u1ec3 s\u1eb5n hai t\u1edbi ba c\u1ee1 t\u1ea1i tr\u1ea1m, v\u00ec \u1ed1ng tai ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh ch\u00eanh nhau kh\u00e1 nhi\u1ec1u v\u00e0 m\u1ed9t c\u1ee1 duy nh\u1ea5t lu\u00f4n b\u1ecf s\u00f3t m\u1ed9t nh\u00f3m.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ph\u00e2n b\u1ed5 \u0111\u00fang lo\u1ea1i cho \u0111\u00fang v\u1ecb tr\u00ed n\u00ean d\u1ef1a tr\u00ean b\u1ea3n \u0111\u1ed3 \u1ed3n c\u1ee7a nh\u00e0 m\u00e1y. Danh m\u1ee5c <a href=\"https:\/\/www.baohoxanh.com\/bao-ho-tai\">b\u1ea3o h\u1ed9 tai<\/a> bao g\u1ed3m c\u1ea3 n\u00fat v\u00e0 ch\u1ee5p tai \u0111\u1ec3 b\u1ed1 tr\u00ed linh ho\u1ea1t theo t\u1eebng khu. V\u1edbi v\u00f9ng v\u01b0\u1ee3t ng\u01b0\u1ee1ng nhi\u1ec1u, ph\u01b0\u01a1ng \u00e1n \u0111eo hai l\u1edbp d\u00f9ng n\u00fat b\u00ean trong k\u1ebft h\u1ee3p <a href=\"https:\/\/www.baohoxanh.com\/bit-tai-chong-on\">ch\u1ee5p b\u1ecbt tai ch\u1ed1ng \u1ed3n<\/a> b\u00ean ngo\u00e0i cho m\u1ee9c gi\u1ea3m cao h\u01a1n, nh\u01b0ng ph\u1ea7n c\u1ed9ng th\u00eam kh\u00f4ng b\u1eb1ng t\u1ed5ng hai ch\u1ec9 s\u1ed1 m\u00e0 ch\u1ec9 nh\u1ec9nh h\u01a1n thi\u1ebft b\u1ecb t\u1ed1t h\u01a1n v\u00e0i \u0111\u01a1n v\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi \u0111\u01a1n h\u00e0ng cho v\u00e0i tr\u0103m lao \u0111\u1ed9ng, n\u00ean l\u1ea5y m\u1eabu hai \u0111\u1ebfn ba m\u00e3 kh\u00e1c nhau cho c\u00f4ng nh\u00e2n d\u00f9ng th\u1eed m\u1ed9t tu\u1ea7n r\u1ed3i m\u1edbi ch\u1ed1t. L\u00fd do: k\u00edch th\u01b0\u1edbc \u1ed1ng tai kh\u00e1c nhau kh\u00e1 nhi\u1ec1u, m\u1ed9t m\u00e3 v\u1eeba v\u1edbi ng\u01b0\u1eddi n\u00e0y c\u00f3 th\u1ec3 g\u00e2y \u0111au ho\u1eb7c t\u1ee5t ra v\u1edbi ng\u01b0\u1eddi kh\u00e1c, v\u00e0 t\u1ec9 l\u1ec7 tu\u00e2n th\u1ee7 \u0111eo m\u1edbi l\u00e0 th\u01b0\u1edbc \u0111o hi\u1ec7u qu\u1ea3 th\u1eadt s\u1ef1. C\u00e1c d\u00f2ng trong nh\u00f3m <a href=\"https:\/\/www.baohoxanh.com\/nut-tai-chong-on\">n\u00fat tai ch\u1ed1ng \u1ed3n nh\u1eadp kh\u1ea9u<\/a> \u0111\u1ec1u c\u00f3 t\u00e0i li\u1ec7u c\u00f4ng b\u1ed1 ch\u1ec9 s\u1ed1 k\u00e8m theo \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu tr\u01b0\u1edbc khi ch\u1ed1t \u0111\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.baohoxanh.com\/blog\/wp-content\/uploads\/2016\/03\/nut-tai-chong-on1.jpg\" alt=\"H\u1ed9p n\u00fat tai ch\u1ed1ng \u1ed3n c\u1ea5p ph\u00e1t t\u1ea1i l\u1ed1i v\u00e0o khu v\u1ef1c \u1ed3n\" loading=\"lazy\" width=\"500\" height=\"500\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p V\u1ec1 N\u00fat B\u1ecbt Tai Ch\u1ed1ng \u1ed2n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110eo N\u00fat Tai C\u1ea3 Ca T\u00e1m Ti\u1ebfng C\u00f3 H\u1ea1i Kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng, n\u1ebfu n\u00fat s\u1ea1ch, \u0111\u00fang c\u1ee1 v\u00e0 \u0111\u01b0\u1ee3c th\u00e1o ra khi ngh\u1ec9 gi\u1ea3i lao. V\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb v\u1ec7 sinh k\u00e9m ho\u1eb7c n\u00fat qu\u00e1 to g\u00e2y \u00e9p \u1ed1ng tai, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb th\u1eddi l\u01b0\u1ee3ng \u0111eo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110eo N\u00fat Tai C\u00f3 Nghe \u0110\u01b0\u1ee3c Ng\u01b0\u1eddi Kh\u00e1c N\u00f3i Kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, mi\u1ec5n l\u00e0 kh\u00f4ng ch\u1ecdn m\u1ee9c gi\u1ea3m \u1ed3n qu\u00e1 cao so v\u1edbi m\u00f4i tr\u01b0\u1eddng. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, n\u00fat tai c\u00f2n gi\u00fap nghe l\u1eddi n\u00f3i r\u00f5 h\u01a1n v\u00ec c\u1eaft b\u1edbt n\u1ec1n \u1ed3n \u00f9 li\u00ean t\u1ee5c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">N\u00fat Tai Hay Ch\u1ee5p Tai T\u1ed1t H\u01a1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00fat tai g\u1ecdn, kh\u00f4ng v\u01b0\u1edbng m\u0169 b\u1ea3o h\u1ed9 v\u00e0 m\u00e1t h\u01a1n trong nh\u00e0 x\u01b0\u1edfng n\u00f3ng. Ch\u1ee5p tai d\u1ec5 ki\u1ec3m tra b\u1eb1ng m\u1eaft t\u1eeb xa v\u00e0 \u0111eo nhanh. Nhi\u1ec1u nh\u00e0 m\u00e1y d\u00f9ng song song: n\u00fat cho ng\u01b0\u1eddi \u0111\u1ee9ng m\u00e1y, ch\u1ee5p cho ng\u01b0\u1eddi ra v\u00e0o gi\u00e1m s\u00e1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00f3 C\u1ea7n \u0110o L\u1ea1i M\u1ee9c \u1ed2n H\u1eb1ng N\u0103m Kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00ean \u0111o l\u1ea1i m\u1ed7i khi thay \u0111\u1ed5i m\u00e1y m\u00f3c, \u0111\u1ed5i b\u1ed1 tr\u00ed m\u1eb7t b\u1eb1ng ho\u1eb7c t\u0103ng ca s\u1ea3n xu\u1ea5t, v\u00e0 \u0111\u1ecbnh k\u1ef3 theo quy \u0111\u1ecbnh n\u1ed9i b\u1ed9. M\u1ed9t chi\u1ebfc m\u00e1y c\u0169 \u0111i ho\u1eb7c m\u1ed9t v\u00e1ch ng\u0103n b\u1ecb d\u1ee1 b\u1ecf c\u00f3 th\u1ec3 l\u00e0m m\u1ee9c \u1ed3n \u0111\u1ed5i v\u00e0i \u0111\u1ec1 xi ben, \u0111\u1ee7 \u0111\u1ec3 b\u1ea3ng ch\u1ecdn s\u1ea3n ph\u1ea9m tr\u01b0\u1edbc \u0111\u00f3 kh\u00f4ng c\u00f2n \u0111\u00fang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec Sao Hai Ng\u01b0\u1eddi C\u00f9ng \u0110eo M\u1ed9t M\u00e3 L\u1ea1i Cho K\u1ebft Qu\u1ea3 Kh\u00e1c Nhau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec h\u00ecnh d\u1ea1ng \u1ed1ng tai kh\u00e1c nhau v\u00e0 thao t\u00e1c \u0111eo kh\u00e1c nhau. \u1ed0ng tai cong nhi\u1ec1u th\u00ec n\u00fat ch\u1ec9 ch\u1ea1m c\u1eeda \u1ed1ng, ph\u1ea7n th\u00e2n c\u00f2n n\u1eb1m ngo\u00e0i, v\u00e0 khe h\u1edf \u0111\u00f3 l\u00e0m m\u1ea5t ph\u1ea7n l\u1edbn hi\u1ec7u qu\u1ea3. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do bu\u1ed5i ki\u1ec3m \u0111\u1ed9 kh\u00edt quan tr\u1ecdng h\u01a1n vi\u1ec7c so ch\u1ec9 s\u1ed1 gi\u1eefa c\u00e1c m\u00e3 s\u1ea3n ph\u1ea9m.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch ch\u1ecdn n\u00fat b\u1ecbt tai ch\u1ed1ng \u1ed3n theo s\u1ed1 \u0111o t\u1ea1i x\u01b0\u1edfng: \u0111\u1ecdc SNR v\u00e0 NRR, chi\u1ebft gi\u1ea3m ra m\u1ee9c th\u1ef1c t\u1ebf v\u00e0 c\u00e1ch ki\u1ec3m \u0111\u1ed9 kh\u00edt.<\/p>\n","protected":false},"author":969,"featured_media":30377,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6934],"tags":[4400,179],"class_list":["post-8649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-xoa-gsc","tag-do-bit-tai-chong-tieng-on","tag-nut-tai-chong-on"],"_links":{"self":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/8649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/users\/969"}],"replies":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/comments?post=8649"}],"version-history":[{"count":12,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/8649\/revisions"}],"predecessor-version":[{"id":94953,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/8649\/revisions\/94953"}],"wp:attachment":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/media?parent=8649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/categories?post=8649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/tags?post=8649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}