{"id":8025,"date":"2016-05-16T14:26:56","date_gmt":"2016-05-16T07:26:56","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=8025"},"modified":"2026-09-04T13:40:42","modified_gmt":"2026-09-04T06:40:42","slug":"nut-tai-chong-on-gia-re-an-toan","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/nut-tai-chong-on-gia-re-an-toan\/","title":{"rendered":"N\u00fat Tai Ch\u1ed1ng \u1ed2n R\u1ebb \u1ede Kh\u00e2u N\u00e0o V\u00e0 C\u00e1ch Nh\u00e9t \u0110\u00fang \u0110\u1ec3 C\u00f2n Hi\u1ec7u Qu\u1ea3"},"content":{"rendered":"\n

M\u1ed9t h\u1ed9p n\u00fat tai ch\u1ed1ng \u1ed3n gi\u00e1 r\u1ebb \u0111\u1eb7t \u1edf c\u1eeda x\u01b0\u1edfng kh\u00f4ng t\u1ef1 b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c ai. Ph\u1ea7n l\u1edbn hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00f3n h\u00e0ng n\u00e0y n\u1eb1m \u1edf ba vi\u1ec7c kh\u00f4ng t\u1ed1n th\u00eam \u0111\u1ed3ng n\u00e0o: \u0111\u1ecdc \u0111\u00fang nh\u00e3n tr\u01b0\u1edbc khi k\u00fd nh\u1eadn, nh\u00e9t \u0111\u00fang k\u1ef9 thu\u1eadt, v\u00e0 ki\u1ec3m l\u1ea1i ngay sau khi \u0111eo. B\u00e0i vi\u1ebft \u0111i v\u00e0o \u0111\u00fang ba vi\u1ec7c \u0111\u00f3, k\u00e8m c\u00e1ch gi\u1eef, th\u1eddi \u0111i\u1ec3m ph\u1ea3i b\u1ecf m\u1ed9t \u0111\u00f4i n\u00fat tai v\u00e0 nh\u1eefng d\u1ea5u hi\u1ec7u cho th\u1ea5y l\u00f4 h\u00e0ng \u0111ang \u0111\u01b0\u1ee3c ch\u00e0o kh\u00f4ng n\u00ean nh\u1eadn.<\/p>\n\n\n\n

N\u00fat Tai Ch\u1ed1ng \u1ed2n Gi\u00e1 R\u1ebb \u0110\u01b0\u1ee3c R\u1ebb \u1ede Kh\u00e2u N\u00e0o<\/h2>\n\n\n\n

M\u00f3n h\u00e0ng n\u00e0y r\u1ebb v\u00ec b\u1ea3n ch\u1ea5t c\u1ee7a n\u00f3 \u0111\u01a1n gi\u1ea3n: m\u1ed9t kh\u1ed1i b\u1ecdt \u0111\u00e0n h\u1ed3i ho\u1eb7c m\u1ed9t th\u00e2n nh\u1ef1a m\u1ec1m c\u00f3 v\u00e0i v\u00e0nh ch\u1eb7n, kh\u00f4ng linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, kh\u00f4ng c\u01a1 c\u1ea5u chuy\u1ec3n \u0111\u1ed9ng, kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec. M\u1ed9t d\u00e2y chuy\u1ec1n \u00e9p b\u1ecdt cho ra h\u00e0ng ch\u1ee5c ngh\u00ecn \u0111\u00f4i m\u1ed7i ng\u00e0y, n\u00ean ph\u1ea7n chi ph\u00ed tr\u00ean m\u1ed7i \u0111\u00f4i ch\u1ee7 y\u1ebfu l\u00e0 v\u1eadt li\u1ec7u v\u00e0 bao g\u00f3i. \u0110\u00e2y l\u00e0 l\u00fd do m\u1ed9t t\u1ed5 ba m\u01b0\u01a1i ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ea7y \u0111\u1ee7 m\u00e0 kho\u1ea3n chi v\u1eabn nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi m\u1ed9t chi\u1ebfc m\u00e1y \u0111o \u1ed3n c\u1ea7m tay.<\/p>\n\n\n\n

Nh\u01b0ng c\u00f3 ba kho\u1ea3n trong m\u00f3n h\u00e0ng r\u1ebb n\u00e0y kh\u00f4ng n\u00ean c\u1eaft. Th\u1ee9 nh\u1ea5t l\u00e0 c\u01a1 s\u1edf c\u1ee7a ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n: con s\u1ed1 ph\u1ea3i \u0111i k\u00e8m h\u1ec7 \u0111o v\u00e0 phi\u1ebfu k\u1ef9 thu\u1eadt c\u1ee7a \u0111\u00fang l\u00f4 h\u00e0ng, kh\u00f4ng ph\u1ea3i m\u1ed9t d\u00f2ng ch\u1eef in to tr\u00ean v\u1ecf h\u1ed9p. Th\u1ee9 hai l\u00e0 d\u1ea3i c\u1ee1: m\u1ed9t nh\u00e0 m\u00e1y c\u00f3 c\u1ea3 nam v\u00e0 n\u1eef, \u1ed1ng tai kh\u00f4ng ai gi\u1ed1ng ai, n\u00ean ch\u1ec9 c\u1ea5p m\u1ed9t c\u1ee1 duy nh\u1ea5t l\u00e0 \u0111\u00e3 t\u1ef1 b\u1ecf \u0111i m\u1ed9t ph\u1ea7n hi\u1ec7u qu\u1ea3. Th\u1ee9 ba l\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u1ee7a v\u1eadt li\u1ec7u, th\u1ee9 quy\u1ebft \u0111\u1ecbnh n\u00fat c\u00f3 n\u1edf k\u00edn \u1ed1ng tai sau khi nh\u00e9t hay kh\u00f4ng.<\/p>\n\n\n\n

\"N\u00fat
<\/figcaption><\/figure>\n\n\n\n

C\u00e1ch t\u00ednh chi ph\u00ed c\u00f3 \u00edch h\u01a1n l\u00e0 t\u00ednh theo ng\u01b0\u1eddi theo th\u00e1ng ch\u1ee9 kh\u00f4ng theo \u0111\u00f4i. M\u1ed9t ng\u01b0\u1eddi v\u1eadn h\u00e0nh m\u00e1y trong khu v\u1ef1c \u1ed3n c\u1ea7n bao nhi\u00eau \u0111\u00f4i m\u1ed9t th\u00e1ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c h\u1ecd ra v\u00e0o bao nhi\u00eau l\u1ea7n, m\u00f4i tr\u01b0\u1eddng c\u00f3 b\u1ee5i d\u1ea7u hay kh\u00f4ng, v\u00e0 lo\u1ea1i \u0111ang d\u00f9ng l\u00e0 b\u1ecdt b\u1ecf sau ca hay lo\u1ea1i v\u00e0nh silicone r\u1eeda \u0111\u01b0\u1ee3c. Khi quy v\u1ec1 con s\u1ed1 theo ng\u01b0\u1eddi theo th\u00e1ng, vi\u1ec7c ch\u1ecdn gi\u1eefa hai lo\u1ea1i tr\u1edf n\u00ean r\u00f5 r\u00e0ng v\u00e0 kh\u00f4ng c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea3m gi\u00e1c \u0111\u1eaft r\u1ebb tr\u00ean b\u1ea3ng b\u00e1o gi\u00e1.<\/p>\n\n\n\n

\u0110\u1ecdc Nh\u00e3n H\u1ed9p Tr\u01b0\u1edbc Khi K\u00fd Nh\u1eadn L\u00f4 H\u00e0ng<\/h2>\n\n\n\n

Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 th\u00ednh l\u1ef1c \u1edf ch\u00e2u \u00c2u \u0111\u01b0\u1ee3c x\u1ebfp theo b\u1ed9 ti\u00eau chu\u1ea9n EN 352. Ph\u1ea7n d\u00e0nh cho n\u00fat nh\u00e9t \u1ed1ng tai l\u00e0 EN 352-2, ph\u1ea7n cho \u1ed1p tai ki\u1ec3u \u0111ai \u0111\u1ed9i \u0111\u1ea7u l\u00e0 EN 352-1, ph\u1ea7n cho \u1ed1p tai l\u1eafp v\u00e0o m\u0169 c\u1ee9ng l\u00e0 EN 352-3. M\u1ed9t h\u1ed9p n\u00fat tai c\u00f3 ghi EN 352-2 k\u00e8m t\u00ean ph\u00f2ng th\u1eed nghi\u1ec7m l\u00e0 d\u1ea5u hi\u1ec7u \u0111\u1ea7u ti\u00ean cho th\u1ea5y s\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111i qua m\u1ed9t quy tr\u00ecnh \u0111o, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t con s\u1ed1 t\u1ef1 c\u00f4ng b\u1ed1.<\/p>\n\n\n\n

R\u1ebb hay \u0111\u1eaft ch\u1ec9 c\u00f3 ngh\u0129a khi bi\u1ebft nh\u00e0 x\u01b0\u1edfng \u0111ang c\u1ea7n gi\u1ea3m bao nhi\u00eau dB. \u0110i\u1ec1u 29 CFR 1910.95 v\u1ec1 ph\u01a1i nhi\u1ec5m ti\u1ebfng \u1ed3n ngh\u1ec1 nghi\u1ec7p<\/a> c\u1ee7a OSHA \u0111\u1eb7t m\u1ee9c h\u00e0nh \u0111\u1ed9ng \u1edf 85 dBA trung b\u00ecnh 8 gi\u1edd \u2014 v\u01b0\u1ee3t ng\u01b0\u1ee1ng n\u00e0y th\u00ec ph\u1ea3i ch\u1ea1y c\u1ea3 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh b\u1ea3o v\u1ec7 th\u00ednh l\u1ef1c g\u1ed3m \u0111o th\u00ednh l\u1ef1c \u0111\u1ed3 n\u1ec1n v\u00e0 \u0111o l\u1ea1i h\u1eb1ng n\u0103m, kh\u00f4ng d\u1eebng \u1edf vi\u1ec7c ph\u00e1t n\u00fat tai; b\u1ea3ng G-16 c\u1ee7a v\u0103n b\u1ea3n cho ph\u00e9p 8 gi\u1edd \u1edf 90 dBA, 4 gi\u1edd \u1edf 95, 2 gi\u1edd \u1edf 100 v\u00e0 1 gi\u1edd \u1edf 105. Ph\u1ee5 l\u1ee5c B c\u00f9ng v\u0103n b\u1ea3n n\u00f3i th\u00eam m\u1ed9t \u0111i\u1ec1u m\u00e0 v\u1ecf h\u1ed9p kh\u00f4ng in: s\u1ed1 gi\u1ea3m \u1ed3n ghi tr\u00ean bao b\u00ec l\u00e0 k\u1ebft qu\u1ea3 \u0111o trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 ph\u1ea3i tr\u1eeb hao khi \u01b0\u1edbc l\u01b0\u1ee3ng m\u1ee9c gi\u1ea3m th\u1ef1c t\u1ebf ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n\n\n\n

Ch\u1ec9 s\u1ed1 gi\u1ea3m \u1ed3n c\u00f3 hai h\u1ec7 \u0111ang song song t\u1ed3n t\u1ea1i tr\u00ean th\u1ecb tr\u01b0\u1eddng trong n\u01b0\u1edbc. SNR l\u00e0 h\u1ec7 ch\u00e2u \u00c2u, th\u01b0\u1eddng \u0111i k\u00e8m ba gi\u00e1 tr\u1ecb H, M, L cho ba d\u1ea3i t\u1ea7n cao, trung v\u00e0 th\u1ea5p. NRR l\u00e0 h\u1ec7 c\u1ee7a M\u1ef9. Hai con s\u1ed1 n\u00e0y kh\u00f4ng quy \u0111\u1ed5i th\u1eb3ng cho nhau, n\u00ean m\u1ed9t h\u1ed9p ch\u1ec9 in \u0111\u00fang m\u1ed9t s\u1ed1 m\u00e0 kh\u00f4ng n\u00f3i theo h\u1ec7 n\u00e0o th\u00ec con s\u1ed1 \u0111\u00f3 kh\u00f4ng d\u00f9ng \u0111\u01b0\u1ee3c \u0111\u1ec3 t\u00ednh m\u1ee9c b\u1ea3o v\u1ec7. Khi g\u1eb7p tr\u01b0\u1eddng h\u1ee3p n\u00e0y, h\u00e3y h\u1ecfi th\u1eb3ng nh\u00e0 cung c\u1ea5p phi\u1ebfu k\u1ef9 thu\u1eadt c\u1ee7a l\u00f4 \u0111ang giao.<\/p>\n\n\n\n

Con s\u1ed1 tr\u00ean nh\u00e3n l\u00e0 k\u1ebft qu\u1ea3 \u0111o trong ph\u00f2ng th\u00ed nghi\u1ec7m, v\u1edbi ng\u01b0\u1eddi \u0111eo \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn k\u1ef9 v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u1eebng l\u1ea7n \u0111eo. Ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng, m\u1ee9c gi\u1ea3m \u1ed3n th\u1ef1c t\u1ebf lu\u00f4n th\u1ea5p h\u01a1n, v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai con s\u1ed1 ph\u1ee5 thu\u1ed9c g\u1ea7n nh\u01b0 ho\u00e0n to\u00e0n v\u00e0o k\u1ef9 thu\u1eadt nh\u00e9t. V\u00ec v\u1eady \u0111\u1eebng l\u1ea5y con s\u1ed1 tr\u00ean h\u1ed9p tr\u1eeb th\u1eb3ng v\u00e0o m\u1ee9c \u1ed3n \u0111o \u0111\u01b0\u1ee3c r\u1ed3i k\u1ebft lu\u1eadn v\u1ecb tr\u00ed \u0111\u00f3 \u0111\u00e3 an to\u00e0n. H\u00e3y \u0111\u1ec3 l\u1ea1i m\u1ed9t bi\u00ean \u0111\u1ed9 d\u1ef1 ph\u00f2ng v\u00e0 ki\u1ec3m tra l\u1ea1i b\u1eb1ng ph\u00e9p \u0111o t\u1ea1i ch\u1ed7.<\/p>\n\n\n\n

M\u1ed1c c\u1ea7n \u0111\u1ed1i chi\u1ebfu \u1edf Vi\u1ec7t Nam n\u1eb1m trong QCVN 24:2016\/BYT v\u1ec1 ti\u1ebfng \u1ed3n t\u1ea1i n\u01a1i l\u00e0m vi\u1ec7c. Khi m\u1ee9c \u1ed3n t\u1ea1i m\u1ed9t v\u1ecb tr\u00ed v\u01b0\u1ee3t ng\u01b0\u1ee1ng cho ph\u00e9p cho ca t\u00e1m gi\u1edd, vi\u1ec7c ph\u00e1t n\u00fat tai l\u00e0 b\u1eaft bu\u1ed9c ch\u1ee9 kh\u00f4ng c\u00f2n l\u00e0 tu\u1ef3 ch\u1ecdn, v\u00e0 \u0111i k\u00e8m v\u1edbi n\u00f3 l\u00e0 h\u1ed3 s\u01a1 \u0111o, danh s\u00e1ch ng\u01b0\u1eddi ph\u1ea3i \u0111eo c\u00f9ng l\u1ecbch ki\u1ec3m tra th\u00ednh l\u1ef1c. To\u00e0n b\u1ed9 ph\u1ea7n khung ch\u01b0\u01a1ng tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf nh\u00f3m n\u00fat tai ch\u1ed1ng \u1ed3n cho nh\u00e0 x\u01b0\u1edfng<\/a>.<\/p>\n\n\n\n

\"N\u00fat
<\/figcaption><\/figure>\n\n\n\n

K\u1ef9 Thu\u1eadt Nh\u00e9t Quy\u1ebft \u0110\u1ecbnh N\u1eeda Ph\u1ea7n Hi\u1ec7u Qu\u1ea3 C\u00f2n L\u1ea1i<\/h2>\n\n\n\n

\u1ed0ng tai ng\u01b0\u1eddi kh\u00f4ng ph\u1ea3i m\u1ed9t \u0111\u01b0\u1eddng \u1ed1ng th\u1eb3ng. N\u00f3 cong v\u00e0 h\u01a1i ch\u1ebfch l\u00ean, n\u00ean m\u1ed9t kh\u1ed1i b\u1ecdt \u0111\u1ea9y th\u1eb3ng v\u00e0o ch\u1ec9 ch\u1ea1m t\u1edbi c\u1eeda \u1ed1ng r\u1ed3i d\u1eebng l\u1ea1i. Ph\u1ea7n b\u1ecdt c\u00f2n n\u1eb1m ngo\u00e0i kh\u00f4ng ch\u1eb7n \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng truy\u1ec1n \u00e2m, v\u00e0 ng\u01b0\u1eddi \u0111eo v\u1eabn c\u00f3 c\u1ea3m gi\u00e1c \u0111\u00e3 \u0111eo \u0111\u1ea7y \u0111\u1ee7. \u0110\u00e2y l\u00e0 sai l\u1ec7ch ph\u1ed5 bi\u1ebfn nh\u1ea5t gi\u1eefa con s\u1ed1 tr\u00ean nh\u00e3n v\u00e0 m\u1ee9c b\u1ea3o v\u1ec7 th\u1eadt, v\u00e0 n\u00f3 kh\u00f4ng t\u1ed1n ti\u1ec1n \u0111\u1ec3 s\u1eeda.<\/p>\n\n\n\n

  1. R\u1eeda tay ho\u1eb7c lau tay kh\u00f4 tr\u01b0\u1edbc khi ch\u1ea1m v\u00e0o n\u00fat, v\u00ec tay d\u00ednh d\u1ea7u m\u1ee1 v\u1eeba l\u00e0m b\u1ea9n n\u00fat v\u1eeba l\u00e0m b\u1ecdt tr\u01a1n v\u00e0 kh\u00f3 gi\u1eef.<\/li>
  2. L\u0103n th\u00e2n n\u00fat gi\u1eefa ng\u00f3n c\u00e1i v\u00e0 ng\u00f3n tr\u1ecf th\u00e0nh m\u1ed9t que m\u1ea3nh, \u0111\u1ec1u, kh\u00f4ng c\u00f3 n\u1ebfp g\u1ea5p. B\u1ecdt ph\u1ea3i m\u1ea3nh h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi h\u00ecnh d\u1ea1ng ban \u0111\u1ea7u.<\/li>
  3. V\u00f2ng tay c\u00f2n l\u1ea1i qua \u0111\u1ec9nh \u0111\u1ea7u, k\u00e9o v\u00e0nh tai l\u00ean v\u00e0 ra sau \u0111\u1ec3 \u1ed1ng tai du\u1ed7i th\u1eb3ng ra.<\/li>
  4. \u0110\u1ea9y n\u00fat v\u00e0o ngay khi b\u1ecdt c\u00f2n m\u1ea3nh, tr\u01b0\u1edbc khi n\u00f3 k\u1ecbp n\u1edf l\u1ea1i.<\/li>
  5. Gi\u1eef ng\u00f3n tay t\u00ec nh\u1eb9 \u1edf \u0111u\u00f4i n\u00fat kho\u1ea3ng hai m\u01b0\u01a1i t\u1edbi ba m\u01b0\u01a1i gi\u00e2y cho t\u1edbi khi b\u1ecdt n\u1edf k\u00edn, r\u1ed3i m\u1edbi bu\u00f4ng tay.<\/li><\/ol>\n\n\n\n

    V\u1edbi lo\u1ea1i c\u00f3 v\u00e0nh silicone, thao t\u00e1c kh\u00e1c h\u1eb3n: kh\u00f4ng l\u0103n, m\u00e0 v\u1eabn ph\u1ea3i k\u00e9o v\u00e0nh tai r\u1ed3i \u1ea5n t\u1eebng v\u00e0nh ch\u1eb7n v\u00e0o cho t\u1edbi khi c\u1ea3m th\u1ea5y k\u00edn. Lo\u1ea1i n\u00e0y h\u1ee3p v\u1edbi ng\u01b0\u1eddi ra v\u00e0o khu v\u1ef1c \u1ed3n nhi\u1ec1u l\u1ea7n trong ca, v\u00ec th\u00e1o ra \u0111eo l\u1ea1i kh\u00f4ng c\u1ea7n ch\u1edd b\u1ecdt n\u1edf. \u0110\u1ed5i l\u1ea1i, n\u00f3 c\u1ea7n r\u1eeda v\u00e0 c\u1ea7n \u0111\u00fang c\u1ee1 h\u01a1n, sai c\u1ee1 m\u1ed9t ch\u00fat l\u00e0 \u0111au \u1ed1ng tai sau v\u00e0i gi\u1edd.<\/p>\n\n\n\n

    Ba Ph\u00e9p T\u1ef1 Ki\u1ec3m Ngay Sau Khi \u0110eo<\/h2>\n\n\n\n

    Ba ph\u00e9p d\u01b0\u1edbi \u0111\u00e2y l\u00e0m \u0111\u01b0\u1ee3c ngay t\u1ea1i ch\u1ed7, kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb, v\u00e0 n\u00ean \u0111\u01b0a v\u00e0o bu\u1ed5i h\u01b0\u1edbng d\u1eabn \u0111\u1ea7u ca cho ng\u01b0\u1eddi m\u1edbi. Ch\u00fang kh\u00f4ng thay \u0111\u01b0\u1ee3c ph\u00e9p \u0111o, nh\u01b0ng b\u1eaft \u0111\u01b0\u1ee3c ph\u1ea7n l\u1edbn c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111eo h\u1ee5t.<\/p>\n\n\n\n