{"id":891,"date":"2026-02-28T07:08:57","date_gmt":"2026-02-28T07:08:57","guid":{"rendered":"https:\/\/cn-hawe.com\/?p=891"},"modified":"2026-03-09T00:56:40","modified_gmt":"2026-03-09T00:56:40","slug":"press-brake-safety","status":"publish","type":"post","link":"https:\/\/cn-hawe.com\/vi\/press-brake-safety\/","title":{"rendered":"An to\u00e0n m\u00e1y ch\u1ea5n t\u00f4n: AOPD so v\u1edbi \u0111i\u1ec1u khi\u1ec3n hai tay"},"content":{"rendered":"

M\u1ed9t m\u00e1y ch\u1ea5n d\u00e0i 10 foot, 120 t\u1ea5n, khu\u00f4n d\u01b0\u1edbi m\u1edf v\u1eeba \u0111\u1ee7 \u0111\u1ec3 nu\u1ed1t m\u1ed9t \u0111\u1ea7u ng\u00f3n tay. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u0103n ch\u1ec9nh t\u1ea5m kim lo\u1ea1i, r\u00fat tay ra, v\u1edbi t\u1edbi hai n\u00fat b\u1ea5m song song g\u1eafn tr\u00ean b\u1ec7. C\u1eef ch\u1ea5n \u0111i xu\u1ed1ng khi anh ta \u0111\u00e3 nghi\u00eang ng\u01b0\u1eddi v\u1ec1 ph\u00eda tr\u01b0\u1edbc \u0111\u1ec3 \u0111\u00f3n l\u1ea5y chi ti\u1ebft \u1edf h\u00e0nh tr\u00ecnh l\u00ean.<\/p>\n\n\n\n

Anh ta \u201ctu\u00e2n th\u1ee7.\u201d<\/p>\n\n\n\n

V\u1eady t\u1ea1i sao qu\u1ea3n \u0111\u1ed1c c\u1ee7a anh ta l\u1ea1i \u0111ang \u0111i\u1ec1n b\u00e1o c\u00e1o s\u1ef1 c\u1ed1 v\u1edbi m\u00e1u tr\u00ean s\u00e0n?<\/p>\n\n\n\n

\u1ea2o t\u01b0\u1edfng An to\u00e0n M\u00e1y ch\u1ea5n: V\u00ec sao H\u1ec7 th\u1ed1ng \u0110i\u1ec1u khi\u1ec3n Hai tay \u201cTu\u00e2n th\u1ee7\u201d l\u1ea1i \u0111ang gi\u1ebft ch\u1ebft n\u0103ng su\u1ea5t c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n

B\u01b0\u1edbc v\u00e0o b\u1ea5t k\u1ef3 x\u01b0\u1edfng n\u00e0o x\u00e2y tr\u01b0\u1edbc n\u0103m 2015 v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y c\u00f9ng m\u1ed9t b\u1ed1 tr\u00ed: hai n\u00fat b\u1ea5m \u0111\u1eb7t c\u00e1ch nhau theo quy \u0111\u1ecbnh ANSI B11.3<\/strong><\/em> \u0111\u1ec3 tay ng\u01b0\u1eddi v\u1eadn h\u00e0nh n\u1eb1m ngo\u00e0i \u0111i\u1ec3m v\u1eadn h\u00e0nh khi chu tr\u00ecnh b\u1eaft \u0111\u1ea7u. D\u00e2y \u0111i\u1ec7n k\u00eanh k\u00e9p. Ch\u1ed1ng gi\u1eef n\u00fat li\u00ean t\u1ee5c. S\u1ed5 ki\u1ec3m tra h\u00e0ng qu\u00fd k\u00fd b\u1eb1ng m\u1ef1c xanh.<\/p>\n\n\n\n

Tr\u00ean gi\u1ea5y t\u1edd, m\u1ecdi th\u1ee9 s\u1ea1ch s\u1ebd.<\/p>\n\n\n\n

Ngo\u00e0i th\u1ef1c t\u1ebf, h\u00e3y quan s\u00e1t nh\u1ecbp \u0111i\u1ec7u. \u0110\u1eb7t chi ti\u1ebft. V\u1edbi tay ra sau. B\u1ea5m n\u00fat. B\u01b0\u1edbc v\u00e0o. \u0110\u00f3n chi ti\u1ebft. \u0110\u1eb7t l\u1ea1i. V\u1edbi tay ra sau. B\u1ea5m l\u1ea1i. M\u1ed7i l\u1ea7n ch\u1ea5n \u0111\u1ec1u y\u00eau c\u1ea7u m\u1ed9t l\u1ea7n di chuy\u1ec3n to\u00e0n th\u00e2n ra xa kh\u1ecfi h\u00e0m m\u00e1y tr\u01b0\u1edbc khi th\u00e9p b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed9ng.<\/p>\n\n\n\n

S\u1ef1 di chuy\u1ec3n \u0111\u00f3 l\u00e0 c\u00e1i gi\u00e1 c\u1ee7a vi\u1ec7c tu\u00e2n th\u1ee7. V\u00e0 b\u1ea1n \u0111\u00e3 tr\u1ea3 gi\u00e1 b\u1eb1ng c\u1ea3 th\u1eddi gian l\u1eabn m\u00e1u.<\/p>\n\n\n\n

\u0110i\u1ec1u khi\u1ec3n hai tay kh\u00f4ng lo\u1ea1i b\u1ecf m\u1ed1i nguy. Ch\u00fang ch\u1ec9 bu\u1ed9c kho\u1ea3ng c\u00e1ch t\u1ea1i th\u1eddi \u0111i\u1ec3m kh\u1edfi \u0111\u1ed9ng. C\u1eef ch\u1ea5n v\u1eabn l\u00e0 m\u1ed9t b\u1ed9 h\u00e0m th\u00e9p \u0111\u00f3ng l\u1ea1i; b\u1ea1n ch\u1ec9 d\u1ea1y ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u01b0\u1edbc l\u00f9i tr\u01b0\u1edbc khi b\u1ecb c\u1eafn. M\u00e1y kh\u00f4ng bi\u1ebft tay anh ta \u1edf \u0111\u00e2u sau khi chu tr\u00ecnh b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n ngh\u0129 kho\u1ea3ng c\u00e1ch \u0111\u1ed3ng ngh\u0129a v\u1edbi b\u1ea3o v\u1ec7, b\u1ea1n \u0111\u00e3 \u0111\u1eb7t c\u01b0\u1ee3c s\u1ed5 s\u1ef1 c\u1ed1 c\u1ee7a m\u00ecnh v\u00e0o hy v\u1ecdng \u2014 v\u00e0 thanh tra kh\u00f4ng ph\u1ea1t hy v\u1ecdng, h\u1ecd ph\u1ea1t th\u1ea5t b\u1ea1i.<\/p>\n\n\n\n

N\u1ebfu c\u1ea3 hai tay \u0111\u1ec1u \u0111\u1eb7t tr\u00ean n\u00fat b\u1ea5m, t\u1ea1i sao ch\u1ea5n th\u01b0\u01a1ng nghi\u1ec1n n\u00e1t v\u1eabn x\u1ea3y ra?<\/h3>\n\n\n\n
\"N\u1ebfu<\/figure>\n\n\n\n

T\u00f4i \u0111\u00e3 xem x\u00e9t m\u1ed9t v\u1ee5 vi\u1ec7c n\u01a1i ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u1ea5m c\u1ea3 hai n\u00fat, c\u1eef ch\u1ea5n h\u1ea1 xu\u1ed1ng, v\u00e0 khi ch\u00e0y ti\u1ebfp x\u00fac v\u1edbi chi ti\u1ebft, anh ta theo ph\u1ea3n x\u1ea1 v\u1edbi tay ra \u0111\u1ec3 gi\u1eef m\u1ed9t m\u00e9p h\u1eb9p b\u1eaft \u0111\u1ea7u nghi\u00eang.<\/p>\n\n\n\n

M\u00e1y ch\u1ea5n kh\u00f4ng quan t\u00e2m. N\u00f3 \u0111ang gi\u1eefa h\u00e0nh tr\u00ecnh.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 \u0111i\u1ec3m m\u00f9. \u0110i\u1ec1u khi\u1ec3n hai tay x\u00e1c minh v\u1ecb tr\u00ed tay t\u1ea1i th\u1eddi \u0111i\u1ec3m ban \u0111\u1ea7u. Sau \u0111\u00f3, ch\u1ec9 c\u00f2n qu\u00e1n t\u00ednh v\u00e0 th\u1ee7y l\u1ef1c. Tr\u1eeb khi h\u1ec7 th\u1ed1ng bao g\u1ed3m c\u1ea3m bi\u1ebfn hi\u1ec7n di\u1ec7n li\u00ean t\u1ee5c ho\u1eb7c hi\u1ec7u su\u1ea5t d\u1eebng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t \u0111\u00e1p \u1ee9ng c\u00e1c ANSI B11.3<\/strong><\/em> k\u1ef3 v\u1ecdng hi\u1ec7n t\u1ea1i, b\u1ea1n \u0111ang d\u1ef1a v\u00e0o h\u00e0nh vi.<\/p>\n\n\n\n

V\u00e0 h\u00e0nh vi s\u1ebd g\u00e3y d\u01b0\u1edbi \u00e1p l\u1ef1c.<\/p>\n\n\n\n

Hai m\u01b0\u01a1i n\u0103m tr\u01b0\u1edbc t\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn m\u1ed9t ng\u01b0\u1eddi m\u1ea5t \u0111\u1ea7u ng\u00f3n tr\u1ecf v\u00ec c\u1ed1 \u201cch\u1ec9 \u0111\u1ea9y nh\u1eb9\u201d m\u1ed9t chi ti\u1ebft tr\u01b0\u1ee3t trong khi c\u1eef ch\u1ea5n \u0111ang h\u1ea1. X\u01b0\u01a1ng b\u1ecb c\u1eaft g\u1ecdn h\u01a1n b\u1ea1n t\u01b0\u1edfng. Anh ta c\u00f3 \u0111i\u1ec1u khi\u1ec3n hai tay. Anh ta c\u0169ng c\u00f3 ch\u1ec9 ti\u00eau s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

Ng\u00f4n ng\u1eef tu\u00e2n th\u1ee7 n\u00f3i v\u1ec1 ch\u1ed1ng l\u1eb7p l\u1ea1i v\u00e0 ch\u1ed1ng gi\u1eef n\u00fat li\u00ean t\u1ee5c. N\u00f3 kh\u00f4ng n\u00f3i v\u1ec1 ph\u1ea3n x\u1ea1 con ng\u01b0\u1eddi mu\u1ed1n c\u1ee9u m\u1ed9t l\u1ea7n ch\u1ea5n l\u1ec7ch tr\u1ecb gi\u00e1 b\u1ed1n m\u01b0\u01a1i \u0111\u00f4 ti\u1ec1n ph\u1ebf li\u1ec7u. V\u00f9ng nguy hi\u1ec3m v\u1eabn m\u1edf khi c\u1eef ch\u1ea5n \u0111\u00e3 cam k\u1ebft, v\u00e0 n\u1ebfu hi\u1ec7u su\u1ea5t d\u1eebng c\u1ee7a b\u1ea1n kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 d\u1eebng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u01b0\u1ee3c x\u00e1c minh \u2014 h\u00e3y ngh\u0129 \u0111\u1ebfn 14mm<\/strong><\/em> t\u1eeb l\u00fac ph\u00e1t hi\u1ec7n \u0111\u1ebfn l\u00fac d\u1eebng \u2014 b\u1ea1n kh\u00f4ng ki\u1ec3m so\u00e1t n\u0103ng l\u01b0\u1ee3ng, b\u1ea1n \u0111ang l\u1eadp l\u1ecbch cho n\u00f3.<\/p>\n\n\n\n

B\u1ea1n c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua m\u1ed9t cu\u1ed9c ki\u1ec3m tra v\u00e0 v\u1eabn ch\u1ec9 c\u00e1ch m\u1ed9t ph\u1ea3n x\u1ea1 n\u1eefa l\u00e0 b\u1ecb c\u1eaft c\u1ee5t. \u0110\u1eebng nh\u1ea7m l\u1eabn vi\u1ec7c \u0111\u01b0\u1ee3c k\u00fd duy\u1ec7t h\u00f4m qua v\u1edbi v\u1eadt l\u00fd c\u1ee7a h\u00f4m nay, n\u1ebfu kh\u00f4ng kho\u1ea3n ph\u1ea1t sau \u0111\u00f3 s\u1ebd c\u00f3 nhi\u1ec1u s\u1ed1 0 h\u01a1n ti\u1ec1n th\u01b0\u1edfng qu\u00fd c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i v\u1ec1 c\u00f4ng th\u00e1i h\u1ecdc: C\u1ee9u \u0111\u00f4i tay nh\u01b0ng ph\u00e1 h\u1ee7y vai v\u1edbi c\u01a1 c\u1ea5u k\u00e9o l\u00f9i<\/h3>\n\n\n\n

Gi\u1edd h\u00e3y thay n\u00fat b\u1ea5m l\u00f2ng b\u00e0n tay b\u1eb1ng c\u01a1 c\u1ea5u k\u00e9o l\u00f9i c\u01a1 h\u1ecdc \u2014 d\u00e2y c\u00e1p g\u1eafn v\u00e0o c\u1ed5 tay r\u00fat l\u1ea1i khi ch\u00e0y \u00e9p h\u1ea1 xu\u1ed1ng. T\u00f4i \u0111\u00e3 th\u1ea5y c\u00f4ng nh\u00e2n si\u1ebft ch\u00fang ch\u1eb7t \u0111\u1ebfn m\u1ee9c \u0111\u1ec3 l\u1ea1i r\u00e3nh \u0111\u1ecf v\u00ec h\u1ec7 th\u1ed1ng ch\u1ec9 r\u00fat l\u1ea1i theo m\u1ee9c \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n\n\n\n

\"S\u1ef1<\/figure>\n\n\n\n

V\u1eadn h\u00e0nh nh\u01b0 th\u1ebf su\u1ed1t t\u00e1m gi\u1edd tr\u00ean t\u1ea5m kim lo\u1ea1i n\u1eb7ng.<\/p>\n\n\n\n

M\u1ed7i chu k\u1ef3: \u0111\u01b0a tay ra ph\u00eda tr\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ecbnh v\u1ecb, c\u0103ng d\u00e2y c\u00e1p, vai ch\u1ed1ng l\u1ea1i l\u1ef1c k\u00e9o khi ch\u00e0y \u00e9p h\u1ea1 xu\u1ed1ng, r\u1ed3i ch\u1ed1ng l\u1ea1i l\u1ef1c l\u00f2 xo khi tr\u1edf v\u1ec1. N\u00f3 gi\u1eef tay tr\u00e1nh kh\u1ecfi v\u00f9ng khu\u00f4n, \u0111\u00fang v\u1eady. Nh\u01b0ng n\u00f3 c\u0169ng t\u1ea3i l\u00ean kh\u1edbp xoay vai h\u00e0ng ngh\u00ecn l\u1ea7n m\u1ed7i ca.<\/p>\n\n\n\n

B\u1ea1n \u0111\u00e3 \u0111\u1ed5i r\u1ee7i ro nghi\u1ec1n n\u00e1t t\u1ee9c th\u1eddi l\u1ea5y c\u0103ng th\u1eb3ng t\u00edch l\u0169y.<\/p>\n\n\n\n

V\u00e0 c\u0103ng th\u1eb3ng kh\u00f4ng xu\u1ea5t hi\u1ec7n trong s\u1ed5 OSHA 300 gi\u1ed1ng nh\u01b0 m\u1ed9t \u0111\u1ea7u ng\u00f3n tay b\u1ecb \u0111\u1ee9t. N\u00f3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng th\u1eddi gian m\u1ea5t vi\u1ec7c, c\u00e1c y\u00eau c\u1ea7u b\u1ed3i th\u01b0\u1eddng lao \u0111\u1ed9ng \u0111\u01b0\u1ee3c ghi l\u00e0 \u2019qu\u00e1 s\u1ee9c\u201c, v\u00e0 m\u1ed9t c\u00f4ng nh\u00e2n m\u00e1y \u00e9p 52 tu\u1ed5i kh\u00f4ng th\u1ec3 n\u00e2ng tay l\u00ean qu\u00e1 ng\u1ef1c. M\u1ed1i nguy \u0111\u00e3 chuy\u1ec3n t\u1eeb \u0111i\u1ec3m k\u1eb9p sang kh\u1edbp.<\/p>\n\n\n\n

N\u1ebfu thi\u1ebft b\u1ecb an to\u00e0n c\u1ee7a b\u1ea1n b\u1ea3o v\u1ec7 m\u00e1y m\u00f3c \u0111\u00e1ng tin c\u1eady h\u01a1n c\u01a1 th\u1ec3 ng\u01b0\u1eddi v\u1eadn h\u00e0nh, th\u00ec b\u1ea1n \u0111ang t\u1ed1i \u01b0u h\u00f3a cho \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n

H\u00ecnh ph\u1ea1t s\u1ea3n xu\u1ea5t: Chi ph\u00ed c\u1ed9ng d\u1ed3n c\u1ee7a vi\u1ec7c l\u00f9i l\u1ea1i cho m\u1ed7i l\u1ea7n u\u1ed1n<\/h3>\n\n\n\n
\"H\u00ecnh<\/figure>\n\n\n\n

H\u00e3y \u0111\u1ebfm, \u0111\u1eebng thuy\u1ebft gi\u1ea3ng.<\/p>\n\n\n\n

Gi\u1ea3 s\u1eed m\u1ed9t chi ti\u1ebft khi\u00eam t\u1ed1n: 6 l\u1ea7n u\u1ed1n. V\u1edbi \u0111i\u1ec1u khi\u1ec3n hai tay, ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u2014 m\u1ed9t c\u00e1ch b\u1ea3o th\u1ee7 \u2014 m\u1ea5t th\u00eam m\u1ed9t gi\u00e2y \u0111\u1ec3 l\u00f9i l\u1ea1i v\u00e0 ti\u1ebfn t\u1edbi cho m\u1ed7i l\u1ea7n u\u1ed1n. \u0110\u00f3 l\u00e0 6 gi\u00e2y cho m\u1ed7i chi ti\u1ebft. V\u1edbi 200 chi ti\u1ebft m\u1ed7i ca, \u0111\u00f3 l\u00e0 1.200 gi\u00e2y. Hai m\u01b0\u01a1i ph\u00fat.<\/p>\n\n\n\n

Hai m\u01b0\u01a1i ph\u00fat th\u1eddi gian c\u1ee7a m\u1ed9t c\u00f4ng nh\u00e2n l\u00e0nh ngh\u1ec1 b\u1ecb \u0111\u1ed1t v\u00e0o vi\u1ec7c di chuy\u1ec3n theo nh\u1ecbp.<\/p>\n\n\n\n

Gi\u1edd nh\u00e2n l\u00ean tr\u00ean ba m\u00e1y \u00e9p, hai ca, 250 ng\u00e0y. B\u1ea1n s\u1ebd c\u00f3 h\u00e0ng tr\u0103m gi\u1edd m\u1ed7i n\u0103m \u2014 th\u1eddi gian \u0111\u01b0\u1ee3c tr\u1ea3 l\u01b0\u01a1ng d\u00e0nh cho vi\u1ec7c d\u1ecdn v\u00f9ng thay v\u00ec t\u1ea1o h\u00ecnh kim lo\u1ea1i. V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi t\u00ednh \u0111\u1ebfn nh\u1eefng do d\u1ef1 nh\u1ecf, nh\u1eefng l\u1ea7n b\u1ea5m n\u00fat sai, t\u01b0 th\u1ebf kh\u00f3 ch\u1ecbu l\u00e0m ch\u1eadm vi\u1ec7c \u0111\u1ecbnh v\u1ecb.<\/p>\n\n\n\n

H\u00e0m th\u00e9p v\u1eabn \u0111\u00f3ng v\u1edbi c\u00f9ng t\u1ed1c \u0111\u1ed9. B\u1ea1n ch\u1ec9 l\u00e0m ch\u1eadm con ng\u01b0\u1eddi.<\/p>\n\n\n\n

H\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng ch\u1ea5p nh\u1eadn s\u1ef1 ch\u1eadm tr\u1ec5 \u0111\u00f3 nh\u01b0 \u201cchi ph\u00ed \u0111\u1ec3 an to\u00e0n\u201d. H\u1ecd kh\u00f4ng bao gi\u1edd h\u1ecfi li\u1ec7u c\u00f3 c\u00e1ch n\u00e0o \u0111\u1ec3 cho ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u1edf l\u1ea1i b\u00ean chi ti\u1ebft trong khi m\u00e1y ch\u1ee9ng minh \u2014 b\u1eb1ng to\u00e1n h\u1ecdc \u2014 r\u1eb1ng n\u00f3 c\u00f3 th\u1ec3 d\u1eebng l\u1ea1i tr\u01b0\u1edbc khi ch\u1ea1m v\u00e0o th\u1ecbt trong 14mm<\/strong><\/em>.<\/p>\n\n\n\n

N\u1ebfu vi\u1ec7c l\u00f9i l\u1ea1i l\u00e0 \u0111i\u1ec1u duy nh\u1ea5t gi\u1eef cho ng\u00f3n tay b\u1ea1n nguy\u00ean v\u1eb9n, th\u00ec \u0111i\u1ec1u g\u00ec x\u1ea3y ra khi m\u00e1y kh\u00f4ng th\u1ec3 d\u1eebng \u0111\u1ee7 nhanh ngay t\u1eeb \u0111\u1ea7u?<\/p>\n\n\n\n

Th\u1ef1c t\u1ebf 14mm: V\u1eadt l\u00fd c\u1ee7a \u0111i\u1ec3m k\u1eb9p<\/h2>\n\n\n\n

B\u1ea1n \u0111ang \u0111\u1ee9ng t\u1ea1i m\u00e1y \u00e9p, tay gi\u1eef m\u1ed9t m\u00e9p d\u00e0i 36 inch, m\u1eaft nh\u00ecn v\u00e0o \u0111\u1ea7u ch\u00e0y. Ch\u00e0y \u00e9p \u0111ang h\u1ea1 xu\u1ed1ng v\u1edbi t\u1ed1c \u0111\u1ed9 s\u1ea3n xu\u1ea5t \u2014 v\u01b0\u1ee3t xa 10mm\/s<\/strong><\/em>. B\u1ea3n n\u0103ng c\u1ee7a b\u1ea1n n\u00f3i: n\u1ebfu c\u00f3 \u0111i\u1ec1u g\u00ec sai, h\u1ec7 th\u1ed1ng an to\u00e0n s\u1ebd d\u1eebng n\u00f3.<\/p>\n\n\n\n

\u0110\u00e2y m\u1edbi l\u00e0 c\u00e2u h\u1ecfi th\u1ef1c s\u1ef1 quan tr\u1ecdng: n\u00f3 c\u00f3 th\u1ec3 d\u1eebng l\u1ea1i trong 14mm<\/strong><\/em> v\u1ecb tr\u00ed m\u00e0 ng\u00f3n tay b\u1ea1n s\u1ebd \u1edf \u0111\u00f3 kh\u00f4ng?<\/p>\n\n\n\n

Kh\u00f4ng ph\u1ea3i \u201cn\u00f3 c\u00f3 hai n\u00fat b\u1ea5m.\u201d Kh\u00f4ng ph\u1ea3i \u201cc\u00f3 tia laser.\u201d Kh\u00f4ng ph\u1ea3i \u201cng\u01b0\u1eddi b\u00e1n n\u00f3i n\u00f3 tu\u00e2n th\u1ee7.\u201d Theo ANSI B11.3<\/strong><\/em>, to\u00e0n b\u1ed9 m\u00f4 h\u00ecnh r\u1ee7i ro thu g\u1ecdn th\u00e0nh m\u1ed9t ph\u00e9p \u0111o kh\u1eafc nghi\u1ec7t \u2014 kho\u1ea3ng c\u00e1ch m\u00e0 tr\u1ee5c \u00e9p di chuy\u1ec3n t\u1eeb l\u00fac ph\u00e1t hi\u1ec7n m\u1ed1i nguy \u0111\u1ebfn l\u00fac chuy\u1ec3n \u0111\u1ed9ng d\u1eebng ho\u00e0n to\u00e0n. N\u1ebfu kho\u1ea3ng c\u00e1ch \u0111\u00f3 v\u01b0\u1ee3t qu\u00e1 14mm<\/strong><\/em> \u1edf t\u1ed1c \u0111\u1ed9 s\u1ea3n xu\u1ea5t, b\u1ea1n kh\u00f4ng c\u00f3 b\u1ea3o v\u1ec7 c\u1eadn k\u1ec1. B\u1ea1n ch\u1ec9 c\u00f3 m\u00e0n tr\u00ecnh di\u1ec5n.<\/p>\n\n\n\n

V\u00e0 m\u00e0n tr\u00ecnh di\u1ec5n kh\u00f4ng l\u00e0m ch\u1eadm th\u00e9p.<\/p>\n\n\n\n

M\u00e1y ch\u1ea5n gi\u1ed1ng nh\u01b0 m\u1ed9t b\u1ed9 h\u00e0m \u0111ang \u0111\u00f3ng l\u1ea1i. \u0110i\u1ec1u khi\u1ec3n b\u1eb1ng hai tay bu\u1ed9c b\u1ea1n l\u00f9i ra kh\u1ecfi r\u0103ng tr\u01b0\u1edbc khi c\u1eafn. M\u1ed9t AOPD \u2014 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 quang \u0111i\u1ec7n t\u1eed ch\u1ee7 \u0111\u1ed9ng \u2014 c\u1ed1 g\u1eafng c\u0103n th\u1eddi \u0111i\u1ec3m c\u1eafn \u0111\u1ec3 h\u00e0m d\u1eebng l\u1ea1i tr\u01b0\u1edbc khi ch\u1ea1m. Nh\u01b0ng c\u1ea3 hai \u0111\u1ec1u v\u00f4 ngh\u0129a n\u1ebfu hi\u1ec7u su\u1ea5t d\u1eebng c\u1ee7a m\u00e1y kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng v\u1ec1 m\u1eb7t v\u1eadt l\u00fd trong 14mm<\/strong><\/em> kho\u1ea3ng th\u1eddi gian \u0111\u00f3.<\/p>\n\n\n\n

V\u00ec v\u1eady, tr\u01b0\u1edbc khi b\u1ea1n h\u1ecfi bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t, h\u00e3y h\u1ecfi m\u1ed9t c\u00e2u kh\u00f3 h\u01a1n: kho\u1ea3ng c\u00e1ch d\u1eebng th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n l\u00e0 bao nhi\u00eau, \u0111o d\u01b0\u1edbi t\u1ea3i, ngay h\u00f4m nay?<\/p>\n\n\n\n

Kho\u1ea3ng c\u00e1ch an to\u00e0n so v\u1edbi th\u1eddi gian d\u1eebng: Th\u01b0\u1edbc \u0111o th\u1ef1c s\u1ef1 quy\u1ebft \u0111\u1ecbnh c\u00e1ch b\u1ed1 tr\u00ed b\u1ea3o v\u1ec7 c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n

OSHA kh\u00f4ng quan t\u00e2m b\u1ea1n \u0111\u00e3 l\u1eafp g\u00ec. H\u1ecd quan t\u00e2m \u0111\u1ebfn m\u1ed1i quan h\u1ec7 gi\u1eefa th\u1eddi gian d\u1eebng v\u00e0 kho\u1ea3ng c\u00e1ch an to\u00e0n theo 29 CFR 1910 Subpart O. M\u1ed1i quan h\u1ec7 \u0111\u00f3 l\u00e0 to\u00e1n h\u1ecdc, kh\u00f4ng ph\u1ea3i \u00fd ki\u1ebfn.<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 c\u00e1ch n\u00f3 di\u1ec5n ra tr\u00ean s\u00e0n s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

N\u1ebfu m\u00e1y ch\u1ea5n c\u1ee7a b\u1ea1n ch\u1ea1y nhanh h\u01a1n 10mm\/s<\/strong><\/em>, ANSI B11.3<\/strong><\/em> kh\u00f4ng cho ph\u00e9p b\u1ea1n ch\u1ec9 d\u1ef1a v\u00e0o \u201ct\u1ed1c \u0111\u1ed9 an to\u00e0n.\u201d \u1ede nh\u1eefng t\u1ed1c \u0111\u1ed9 \u0111\u00f3, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 ch\u1ea1m v\u00e0o v\u00f9ng khu\u00f4n tr\u01b0\u1edbc khi tr\u1ee5c \u00e9p gi\u1ea3m t\u1ed1c, tr\u1eeb khi m\u1ed9t thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn hi\u1ec7n di\u1ec7n ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp v\u00e0 tr\u1ee5c \u00e9p d\u1eebng trong m\u1ed9t kho\u1ea3ng c\u00e1ch \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh \u2014 m\u1ed9t l\u1ea7n n\u1eefa, h\u00e3y ngh\u0129 \u0111\u1ebfn 14mm<\/strong><\/em> nh\u01b0 ng\u01b0\u1ee1ng quan tr\u1ecdng cho h\u1ec7 th\u1ed1ng AOPD c\u1eadn k\u1ec1.<\/p>\n\n\n\n

B\u00e2y gi\u1edd h\u00e3y h\u00ecnh dung m\u1ed9t m\u00e0n ch\u1eafn s\u00e1ng \u0111\u01b0\u1ee3c g\u1eafn c\u00e1ch \u0111i\u1ec3m k\u1eb9p 200mm. N\u1ebfu kho\u1ea3ng c\u00e1ch d\u1eebng \u0111o \u0111\u01b0\u1ee3c l\u00e0 120mm, b\u1ea1n \u1ed5n \u2014 tr\u00ean l\u00fd thuy\u1ebft. Nh\u01b0ng n\u1ebfu ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 \u0111\u1ee9ng gi\u1eefa m\u00e0n ch\u1eafn \u0111\u00f3 v\u00e0 khu\u00f4n, m\u00e0 kh\u00f4ng b\u1ecb ph\u00e1t hi\u1ec7n, b\u1ea1n \u0111\u00e3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m m\u00f9 h\u00ecnh h\u1ecdc. Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh r\u00f5 r\u00e0ng c\u1ea7n b\u1ea3o v\u1ec7 b\u1ed5 sung trong t\u00ecnh hu\u1ed1ng \u0111\u00f3. Kho\u1ea3ng c\u00e1ch m\u00e0 kh\u00f4ng c\u00f3 ph\u00e1t hi\u1ec7n l\u00e0 m\u1ed9t l\u1ed7 h\u1ed5ng \u0111\u1ee7 l\u1edbn cho m\u1ed9t b\u00e0n tay.<\/p>\n\n\n\n

V\u00ec v\u1eady, bi\u1ebfn s\u1ed1 th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 thi\u1ebft b\u1ecb. M\u00e0 l\u00e0:<\/p>\n\n\n\n

Th\u1eddi gian d\u1eebng \u00d7 t\u1ed1c \u0111\u1ed9 ti\u1ebfp c\u1eadn = kho\u1ea3ng c\u00e1ch an to\u00e0n t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n ch\u01b0a bao gi\u1edd t\u00ednh to\u00e1n \u0111i\u1ec1u \u0111\u00f3 cho m\u00e1y ch\u1ea5n c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh, v\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u1ee7y l\u1ef1c c\u1ee7a b\u1ea1n, \u1edf t\u1ed1c \u0111\u1ed9 s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n, th\u00ec b\u1ea1n \u0111ang \u0111o\u00e1n. V\u00e0 \u0111o\u00e1n tr\u01b0\u1edbc m\u1eb7t thanh tra OSHA s\u1ebd nhanh ch\u00f3ng bi\u1ebfn th\u00e0nh bi\u00ean b\u1ea3n ph\u1ea1t. H\u1ecd kh\u00f4ng ph\u1ea1t th\u01b0\u01a1ng hi\u1ec7u c\u1ea3m bi\u1ebfn. H\u1ecd ph\u1ea1t hi\u1ec7u su\u1ea5t d\u1eebng ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n\n\n\n

Ch\u1ee7 \u0111\u1ec1<\/th>Chi ti\u1ebft<\/th><\/tr><\/thead>
C\u01a1 s\u1edf ph\u00e1p l\u00fd<\/td>OSHA \u0111\u00e1nh gi\u00e1 s\u1ef1 tu\u00e2n th\u1ee7 d\u1ef1a tr\u00ean m\u1ed1i quan h\u1ec7 gi\u1eefa th\u1eddi gian d\u1eebng v\u00e0 kho\u1ea3ng c\u00e1ch an to\u00e0n theo 29 CFR 1910 Ph\u1ea7n O<\/strong>. M\u1ed1i quan h\u1ec7 n\u00e0y l\u00e0 t\u00ednh to\u00e1n s\u1ed1 h\u1ecdc, kh\u00f4ng ph\u1ea3i \u00fd ki\u1ebfn.<\/td><\/tr>
Gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 an to\u00e0n<\/td>N\u1ebfu t\u1ed1c \u0111\u1ed9 phanh v\u01b0\u1ee3t qu\u00e1 10 mm\/s<\/strong>, ANSI B11.3 kh\u00f4ng cho ph\u00e9p ch\u1ec9 d\u1ef1a v\u00e0o \u201ct\u1ed1c \u0111\u1ed9 an to\u00e0n\u201d.<\/td><\/tr>
Nguy c\u01a1 \u1edf t\u1ed1c \u0111\u1ed9 cao h\u01a1n<\/td>\u1ede t\u1ed1c \u0111\u1ed9 tr\u00ean 10 mm\/s, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 ch\u1ea1m v\u00e0o khu\u00f4n tr\u01b0\u1edbc khi c\u1ea7n tr\u1ee5c gi\u1ea3m t\u1ed1c, tr\u1eeb khi thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn hi\u1ec7n di\u1ec7n ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp v\u00e0 d\u1eebng c\u1ea7n tr\u1ee5c trong m\u1ed9t kho\u1ea3ng c\u00e1ch \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh (v\u00ed d\u1ee5, ng\u01b0\u1ee1ng 14 mm cho h\u1ec7 th\u1ed1ng AOPD g\u1ea7n<\/strong>).<\/td><\/tr>
V\u00ed d\u1ee5 m\u00e0n ch\u1eafn s\u00e1ng<\/td>M\u1ed9t m\u00e0n ch\u1eafn s\u00e1ng \u0111\u01b0\u1ee3c l\u1eafp c\u00e1ch 200 mm<\/strong> so v\u1edbi \u0111i\u1ec3m k\u1eb9p, v\u1edbi kho\u1ea3ng c\u00e1ch d\u1eebng \u0111o \u0111\u01b0\u1ee3c l\u00e0 120 mm<\/strong> c\u00f3 v\u1ebb tu\u00e2n th\u1ee7 tr\u00ean gi\u1ea5y t\u1edd.<\/td><\/tr>
Nguy c\u01a1 \u0111i\u1ec3m m\u00f9 h\u00ecnh h\u1ecdc<\/td>N\u1ebfu ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 \u0111\u1ee9ng m\u00e0 kh\u00f4ng b\u1ecb ph\u00e1t hi\u1ec7n gi\u1eefa m\u00e0n ch\u1eafn v\u00e0 khu\u00f4n, s\u1ebd t\u1ed3n t\u1ea1i \u0111i\u1ec3m m\u00f9. Ti\u00eau chu\u1ea9n y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 b\u1ed5 sung trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y. Kho\u1ea3ng c\u00e1ch kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n t\u1ea1o ra nguy c\u01a1 nghi\u00eam tr\u1ecdng.<\/td><\/tr>
C\u00f4ng th\u1ee9c c\u1ed1t l\u00f5i<\/td>Th\u1eddi gian d\u1eebng \u00d7 t\u1ed1c \u0111\u1ed9 ti\u1ebfp c\u1eadn = kho\u1ea3ng c\u00e1ch an to\u00e0n t\u1ed1i thi\u1ec3u<\/strong><\/td><\/tr>
R\u1ee7i ro tu\u00e2n th\u1ee7<\/td>N\u1ebfu kho\u1ea3ng c\u00e1ch d\u1eebng ch\u01b0a \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n cho lo\u1ea1i phanh c\u1ee5 th\u1ec3, \u0111i\u1ec1u ki\u1ec7n th\u1ee7y l\u1ef1c v\u00e0 t\u1ed1c \u0111\u1ed9 s\u1ea3n xu\u1ea5t, vi\u1ec7c tu\u00e2n th\u1ee7 ch\u1ec9 d\u1ef1a tr\u00ean ph\u1ecfng \u0111o\u00e1n. OSHA tr\u00edch d\u1eabn hi\u1ec7u su\u1ea5t d\u1eebng ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c minh \u2014 kh\u00f4ng ph\u1ea3i th\u01b0\u01a1ng hi\u1ec7u c\u1ea3m bi\u1ebfn.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

B\u00e0i ki\u1ec3m tra v\u01b0\u1ee3t qu\u00e1: Ch\u1ee9ng minh tr\u1ee5c \u00e9p s\u1ebd d\u1eebng tr\u01b0\u1edbc khi ng\u01b0\u1eddi v\u1eadn h\u00e0nh ch\u1ea1m t\u1edbi khu\u00f4n<\/h3>\n\n\n\n

H\u00e3y n\u00f3i c\u1ee5 th\u1ec3.<\/p>\n\n\n\n

M\u1ed9t b\u00e0i ki\u1ec3m tra v\u01b0\u1ee3t qu\u00e1 \u0111o kho\u1ea3ng c\u00e1ch tr\u1ee5c \u00e9p di chuy\u1ec3n sau khi t\u00edn hi\u1ec7u d\u1eebng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t. Kh\u00f4ng ph\u1ea3i t\u1ed1c \u0111\u1ed9 n\u00f3 n\u00ean d\u1eebng. M\u00e0 l\u00e0 t\u1ed1c \u0111\u1ed9 n\u00f3 th\u1ef1c s\u1ef1 d\u1eebng. Khi c\u00f3 t\u1ea3i. \u1ede nhi\u1ec7t \u0111\u1ed9. Tr\u00ean ch\u00ednh m\u00e1y \u0111\u00f3.<\/p>\n\n\n\n

B\u1ea1n ch\u1ea1y tr\u1ee5c \u00e9p \u1edf t\u1ed1c \u0111\u1ed9 ti\u1ebfp c\u1eadn b\u00ecnh th\u01b0\u1eddng. B\u1ea1n k\u00edch ho\u1ea1t d\u1eebng \u2014 ho\u1eb7c qua h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c ch\u1ee9c n\u0103ng ki\u1ec3m tra AOPD. B\u1ea1n \u0111o kho\u1ea3ng c\u00e1ch t\u1eeb t\u00edn hi\u1ec7u \u0111\u1ebfn khi d\u1eebng ho\u00e0n to\u00e0n. Con s\u1ed1 \u0111\u00f3 l\u00e0 s\u1ef1 th\u1eadt c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

T\u00f4i \u0111\u00e3 th\u1ea5y phanh \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o l\u00e0 \u201cs\u1eb5n s\u00e0ng cho AOPD\u201d nh\u01b0ng v\u01b0\u1ee3t qu\u00e1 22mm v\u00e0o bu\u1ed5i s\u00e1ng l\u1ea1nh v\u00e0 18mm sau b\u1eefa tr\u01b0a khi d\u1ea7u lo\u00e3ng ra. C\u1ea3 hai con s\u1ed1 \u0111\u1ec1u v\u01b0\u1ee3t qu\u00e1 14mm<\/strong><\/em>. C\u1ea3 hai con s\u1ed1 \u0111\u1ec1u lo\u1ea1i m\u00e1y kh\u1ecfi kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ti\u1ebfp c\u1eadn g\u1ea7n th\u1ef1c s\u1ef1 theo ANSI B11.3<\/strong><\/em> k\u1ef3 v\u1ecdng.<\/p>\n\n\n\n

V\u00e0 \u0111\u00e2y l\u00e0 \u0111i\u1ec3m m\u1ea5u ch\u1ed1t: h\u01b0\u1edbng d\u1eabn c\u1ee7a OSHA y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t d\u1eebng ph\u1ea3i \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t \u0111\u1ec3 ph\u00e1t hi\u1ec7n sai l\u1ec7ch \u1edf m\u1ed7i l\u1ea7n \u00e9p. Kh\u00f4ng ph\u1ea3i m\u1ed7i n\u0103m m\u1ed9t l\u1ea7n. Kh\u00f4ng ph\u1ea3i \u201ckhi b\u1ea3o tr\u00ec r\u1ea3nh\u201d. N\u1ebfu th\u1eddi gian d\u1eebng c\u1ee7a b\u1ea1n b\u1ecb l\u1ec7ch v\u00e0 b\u1ea1n kh\u00f4ng ph\u00e1t hi\u1ec7n, kho\u1ea3ng c\u00e1ch an to\u00e0n \u0111\u00e3 t\u00ednh to\u00e1n ch\u1ec9 l\u00e0 h\u01b0 c\u1ea5u.<\/p>\n\n\n\n

H\u01b0 c\u1ea5u th\u00ec t\u1ed1n k\u00e9m. Thanh tra kh\u00f4ng tranh lu\u1eadn v\u1ec1 \u00fd \u0111\u1ecbnh c\u1ee7a b\u1ea1n; h\u1ecd \u0111o con s\u1ed1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

V\u00ec v\u1eady khi m\u1ed9t x\u01b0\u1edfng n\u00f3i v\u1edbi t\u00f4i, \u201cCh\u00fang t\u00f4i \u0111\u00e3 l\u1eafp laser, ch\u00fang t\u00f4i an to\u00e0n r\u1ed3i,\u201d c\u00e2u h\u1ecfi \u0111\u1ea7u ti\u00ean c\u1ee7a t\u00f4i r\u1ea5t \u0111\u01a1n gi\u1ea3n: h\u00e3y cho t\u00f4i xem b\u00e0i ki\u1ec3m tra kho\u1ea3ng c\u00e1ch d\u1eebng g\u1ea7n nh\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn. N\u1ebfu h\u1ecd kh\u00f4ng th\u1ec3, to\u00e0n b\u1ed9 c\u00e2u chuy\u1ec7n an to\u00e0n s\u1ee5p \u0111\u1ed5 trong kho\u1ea3ng ba m\u01b0\u01a1i gi\u00e2y.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ee9ng minh tr\u1ee5c \u00e9p d\u1eebng tr\u01b0\u1edbc khi ch\u1ea1m v\u00e0o da th\u1ecbt trong v\u00f2ng 14mm<\/strong><\/em>, b\u1ea1n kh\u00f4ng c\u00f3 an to\u00e0n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf. B\u1ea1n ch\u1ec9 c\u00f3 s\u1ef1 l\u1ea1c quan v\u1edbi d\u00e2y \u0111i\u1ec7n.<\/p>\n\n\n\n

\u0110i\u1ec3m y\u1ebfu ti\u1ec1m \u1ea9n: T\u1ea1i sao van th\u1ee7y l\u1ef1c ch\u1eadm ch\u1ea1p khi\u1ebfn c\u1ea3m bi\u1ebfn ti\u00ean ti\u1ebfn tr\u1edf n\u00ean v\u00f4 d\u1ee5ng<\/h3>\n\n\n\n

Gi\u1edd ch\u00fang ta \u0111\u1ebfn ph\u1ea7n kh\u00f4ng ai mu\u1ed1n nghe.<\/p>\n\n\n\n

AOPD l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb c\u1ef1c k\u1ef3 trung th\u1ef1c. Nhi\u1ec1u h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng theo ANSI B11.3<\/strong><\/em> s\u1ebd kh\u00f4ng cho ph\u00e9p phanh ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a n\u1ebfu laser b\u1ecb l\u1ed7i. M\u1ed9t s\u1ed1 s\u1ebd kh\u00f4ng ch\u1ea1y ch\u00fat n\u00e0o. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ed7i thi\u1ebft k\u1ebf \u2014 \u0111\u00f3 l\u00e0 ti\u00eau chu\u1ea9n bu\u1ed9c ph\u1ea3i l\u1ef1a ch\u1ecdn: s\u1eeda b\u1ea3o v\u1ec7 ho\u1eb7c d\u1eebng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

Nh\u01b0ng \u0111\u00e2y l\u00e0 n\u01a1i c\u00e1c x\u01b0\u1edfng b\u1ecb thi\u1ec7t h\u1ea1i.<\/p>\n\n\n\n

H\u1ecd g\u1eafn m\u1ed9t AOPD hi\u1ec7n \u0111\u1ea1i v\u00e0o m\u1ed9t h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c 20 n\u0103m tu\u1ed5i v\u1edbi c\u00e1c van t\u1ef7 l\u1ec7 \u0111\u00e3 m\u00f2n, l\u00f5i van b\u1ecb k\u1eb9t v\u00e0 ph\u1ea3n \u1ee9ng b\u01a1m k\u00e9m. C\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp trong v\u00e0i mili gi\u00e2y. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n g\u1eedi l\u1ec7nh d\u1eebng ngay l\u1eadp t\u1ee9c. Van ch\u1ea7n ch\u1eeb. \u00c1p su\u1ea5t gi\u1ea3m ch\u1eadm. C\u1ea7n \u00e9p ti\u1ebfp t\u1ee5c tr\u00f4i.<\/p>\n\n\n\n

Ph\u00e1t hi\u1ec7n th\u00ec nhanh. Gi\u1ea3m t\u1ed1c th\u00ec kh\u00f4ng.<\/p>\n\n\n\n

N\u1ebfu m\u1ea1ch th\u1ee7y l\u1ef1c c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 x\u1ea3 \u00e1p v\u00e0 \u0111\u00f3ng d\u00f2ng ch\u1ea3y \u0111\u1ee7 nhanh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng 14mm<\/strong><\/em> kho\u1ea3ng th\u1eddi gian d\u1eebng, th\u00ec c\u1ea3m bi\u1ebfn tinh vi nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi c\u0169ng kh\u00f4ng th\u1ec3 c\u1ee9u b\u1ea1n. N\u00f3 tr\u1edf th\u00e0nh nh\u00e2n ch\u1ee9ng cho s\u1ef1 th\u1ea5t b\u1ea1i.<\/p>\n\n\n\n

T\u00f4i \u0111\u00e3 ki\u1ec3m tra nh\u1eefng m\u00e1y m\u00f3c kh\u00f4ng \u0111\u1ee7 kh\u1ea3 n\u0103ng c\u01a1 h\u1ecdc \u0111\u1ec3 \u0111\u1ea1t ti\u00eau chu\u1ea9n AOPD c\u1eadn k\u1ec1 v\u00ec kho\u1ea3ng c\u00e1ch d\u1eebng c\u1ee7a ch\u00fang v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p. Ti\u00eau chu\u1ea9n r\u1ea5t r\u00f5 r\u00e0ng: phanh kh\u00f4ng th\u1ec3 d\u1eebng m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady trong kho\u1ea3ng c\u00e1ch \u0111\u00f3 th\u00ec kh\u00f4ng \u0111\u1ee7 ch\u1ee9c n\u0103ng \u0111\u1ec3 l\u1eafp ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o v\u1ec7 n\u00e0y. B\u1ea1n kh\u00f4ng th\u1ec3 d\u00f9ng ph\u1ea7n m\u1ec1m \u0111\u1ec3 kh\u1eafc ph\u1ee5c d\u1ea7u ch\u1ea3y ch\u1eadm.<\/p>\n\n\n\n

V\u1eady \u0111\u00e2y l\u00e0 th\u1ef1c t\u1ebf c\u1ea7n ki\u1ec3m ch\u1ee9ng.<\/p>\n\n\n\n

Tr\u01b0\u1edbc khi b\u1ea1n l\u1eadp ng\u00e2n s\u00e1ch cho laser, tr\u01b0\u1edbc khi h\u1ee9a v\u1edbi ng\u01b0\u1eddi v\u1eadn h\u00e0nh r\u1eb1ng h\u1ecd c\u00f3 th\u1ec3 \u1edf l\u1ea1i g\u1ea7n chi ti\u1ebft m\u00e0 kh\u00f4ng ph\u1ea3i l\u00f9i l\u1ea1i, b\u1ea1n h\u00e3y ki\u1ec3m tra m\u00e1y. B\u1ea1n x\u00e1c minh kho\u1ea3ng c\u00e1ch d\u1eebng. B\u1ea1n \u0111\u00e1nh gi\u00e1 th\u1eddi gian ph\u1ea3n \u1ee9ng c\u1ee7a van, t\u1ed1c \u0111\u1ed9 gi\u1ea3m \u00e1p th\u1ee7y l\u1ef1c v\u00e0 \u0111\u1ed9 tr\u1ec5 \u0111i\u1ec1u khi\u1ec3n nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

B\u1edfi v\u00ec n\u1ebfu c\u1ea7n \u00e9p c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 d\u1eebng trong 14mm<\/strong><\/em>, m\u1ecdi thi\u1ebft b\u1ecb an to\u00e0n kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi ch\u1ec9 l\u00e0 m\u00e0n di\u1ec5n \u2014 v\u00e0 bi\u00ean b\u1ea3n x\u1eed ph\u1ea1t sau \u0111\u00f3 s\u1ebd kh\u00f4ng quan t\u00e2m c\u1ea3m bi\u1ebfn c\u1ee7a b\u1ea1n tr\u00f4ng ti\u00ean ti\u1ebfn th\u1ebf n\u00e0o trong t\u1edd qu\u1ea3ng c\u00e1o.<\/p>\n\n\n\n

AOPD ch\u1ee7 \u0111\u1ed9ng: Gi\u00e0nh l\u1ea1i th\u1eddi gian chu k\u1ef3 m\u00e0 kh\u00f4ng th\u1ecfa hi\u1ec7p<\/h2>\n\n\n\n

Gi\u1ea3 s\u1eed phanh th\u1ee7y l\u1ef1c n\u0103m 1992 c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 18mm<\/strong><\/em> sau b\u1eefa tr\u01b0a v\u00e0 22mm<\/strong><\/em> khi kh\u1edfi \u0111\u1ed9ng l\u1ea1nh. B\u1ea1n \u0111\u00e3 ch\u1ea1y th\u1eed. B\u1ea1n c\u00f3 s\u1ed1 li\u1ec7u. G\u1ea7n nh\u01b0 14mm<\/strong><\/em> b\u1ea1n c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u2014 nh\u01b0ng v\u1eabn n\u1eb1m ngo\u00e0i gi\u1edbi h\u1ea1n cho b\u1ea3o v\u1ec7 c\u1eadn k\u1ec1 th\u1ef1c s\u1ef1 theo ANSI B11.3<\/strong><\/em>.<\/p>\n\n\n\n

V\u1eady l\u1ef1a ch\u1ecdn c\u1ee7a b\u1ea1n l\u00e0 g\u00ec?<\/p>\n\n\n\n

N\u1ebfu m\u00e1y kh\u00f4ng th\u1ec3 d\u1eebng v\u1eadt l\u00fd trong 14mm<\/strong><\/em>, b\u1ea1n c\u00f3 ba h\u01b0\u1edbng \u0111i trung th\u1ef1c. M\u1ed9t: x\u00e2y d\u1ef1ng l\u1ea1i kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng th\u1ee7y l\u1ef1c \u2014 van, ph\u1edbt, gi\u1ea3m \u00e1p, \u0111\u1ed9 tr\u1ec5 \u0111i\u1ec1u khi\u1ec3n \u2014 cho \u0111\u1ebfn khi th\u1eddi gian d\u1eebng \u0111\u1ea1t chu\u1ea9n. Hai: di chuy\u1ec3n thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn hi\u1ec7n di\u1ec7n ra xa h\u01a1n kh\u1ecfi khu\u00f4n \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch d\u1eebng th\u1ef1c t\u1ebf, \u0111i\u1ec1u n\u00e0y t\u0103ng kho\u1ea3ng c\u00e1ch an to\u00e0n v\u00e0 \u0111\u1ea9y ng\u01b0\u1eddi v\u1eadn h\u00e0nh l\u00f9i l\u1ea1i. Ba: quay l\u1ea1i \u0111i\u1ec1u khi\u1ec3n hai tay ho\u1eb7c b\u1ea3o v\u1ec7 chu vi v\u00e0 ch\u1ea5p nh\u1eadn gi\u1ea3m s\u1ea3n l\u01b0\u1ee3ng.<\/p>\n\n\n\n

H\u1ebft. Kh\u00f4ng c\u00f3 c\u1eeda th\u1ee9 t\u01b0.<\/p>\n\n\n\n

Nh\u01b0ng khi m\u00e1y c\u00f3 th\u1ec3<\/em> \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u d\u1eebng \u2014 \u0111\u01b0\u1ee3c x\u00e1c minh, ghi ch\u00e9p, gi\u00e1m s\u00e1t t\u1eebng h\u00e0nh tr\u00ecnh \u2014 \u0111\u00f3 ch\u00ednh l\u00e0 l\u00fac Thi\u1ebft b\u1ecb Quang\u2011\u0110i\u1ec7n T\u1eed Ch\u1ee7 \u0110\u1ed9ng (AOPD) ph\u00e1t huy t\u00e1c d\u1ee5ng. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c \u0111i\u1ec1u khi\u1ec3n hai tay bu\u1ed9c ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i l\u00f9i l\u1ea1i kh\u1ecfi h\u00e0m th\u00e9p, AOPD theo c\u00f9ng v\u1edbi c\u1ea7n \u00e9p \u0111i xu\u1ed1ng, b\u1ea3o v\u1ec7 ngay t\u1ea1i \u0111i\u1ec3m c\u1eafn th\u1ef1c t\u1ebf cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec3m t\u1eaft c\u1ea3m bi\u1ebfn. B\u1ea3o v\u1ec7 t\u1ed3n t\u1ea1i ngay n\u01a1i nguy hi\u1ec3m t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n

V\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 \u0111i\u1ec3m xoay.<\/p>\n\n\n\n

\u0110i\u1ec1u khi\u1ec3n hai tay b\u1ea3o v\u1ec7 l\u00fac b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed9ng. AOPD b\u1ea3o v\u1ec7 chuy\u1ec3n \u0111\u1ed9ng nguy hi\u1ec3m.<\/p>\n\n\n\n

N\u1ebfu thi\u1ebft b\u1ecb an to\u00e0n c\u1ee7a b\u1ea1n b\u1ea3o v\u1ec7 m\u00e1y m\u00f3c \u0111\u00e1ng tin c\u1eady h\u01a1n c\u01a1 th\u1ec3 ng\u01b0\u1eddi v\u1eadn h\u00e0nh, th\u00ec b\u1ea1n \u0111ang t\u1ed1i \u01b0u h\u00f3a cho \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n

R\u00e8m \u00e1nh s\u00e1ng vs. Laser g\u1ea7n k\u1ec1: Lo\u1ea1i b\u1ecf vi\u1ec7c ng\u1eaft qu\u1ea5y nhi\u1ec5u.<\/h3>\n\n\n\n

H\u00e3y h\u00ecnh dung m\u1ed9t m\u00e1y phanh d\u00e0i 10 feet u\u1ed1n m\u1ed9t khay n\u00f4ng. R\u00e8m \u00e1nh s\u00e1ng ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c g\u1eafn c\u00e1ch 200mm t\u1eeb kho\u1ea3ng tr\u1ed1ng c\u1ee7a khu\u00f4n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng kho\u1ea3ng c\u00e1ch an to\u00e0n t\u00ednh to\u00e1n d\u1ef1a tr\u00ean th\u1eddi gian d\u1eebng. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u1eb7t ph\u00f4i, c\u1ea7n \u00e9p b\u1eaft \u0111\u1ea7u \u0111i xu\u1ed1ng, v\u00e0 gi\u1eefa h\u00e0nh tr\u00ecnh, m\u00e9p tr\u1ea3 l\u1ea1i l\u00e0m ng\u1eaft ch\u00f9m tia.<\/p>\n\n\n\n

D\u1eebng l\u1ea1i. \u0110\u1eb7t l\u1ea1i. Chu tr\u00ecnh l\u1ea1i b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n\n

\u0110\u00f3 ch\u00ednh l\u00e0 s\u1ef1 ng\u1eaft qu\u1ea5y nhi\u1ec5u m\u00e0 ai c\u0169ng ph\u00e0n n\u00e0n.<\/p>\n\n\n\n

V\u1ea5n \u0111\u1ec1 kh\u00f4ng ph\u1ea3i l\u00e0 \u1edf r\u00e8m. M\u00e0 l\u00e0 h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n

R\u00e8m \u00e1nh s\u00e1ng truy\u1ec1n th\u1ed1ng t\u1ea1o ra m\u1ed9t b\u1ee9c t\u01b0\u1eddng ph\u00e1t hi\u1ec7n theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng. B\u1ea5t c\u1ee9 th\u1ee9 g\u00ec \u0111i v\u00e0o b\u1ee9c t\u01b0\u1eddng \u0111\u00f3 \u0111\u1ec1u d\u1eebng h\u00e0nh tr\u00ecnh. \u0110i\u1ec1u n\u00e0y ho\u00e0n h\u1ea3o khi m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n l\u00e0 gi\u1eef t\u1ea5t c\u1ea3 nh\u00e2n s\u1ef1<\/em> ra kh\u1ecfi to\u00e0n b\u1ed9 khu v\u1ef1c nguy hi\u1ec3m trong su\u1ed1t h\u00e0nh tr\u00ecnh \u2014 \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c ph\u1ea7n l\u1edbn ho\u1eb7c kh\u00f4ng gian l\u00e0m vi\u1ec7c chung. Nh\u01b0ng trong qu\u00e1 tr\u00ecnh u\u1ed1n h\u1ed9p ho\u1eb7c l\u00e0m m\u00e9p, ch\u00ednh ph\u1ea7n kim lo\u1ea1i tr\u1edf th\u00e0nh k\u1ebb x\u00e2m nh\u1eadp.<\/p>\n\n\n\n

H\u1ec7 th\u1ed1ng laser AOPD g\u1ea7n k\u1ec1 ho\u1ea1t \u0111\u1ed9ng kh\u00e1c. Ch\u00fang chi\u1ebfu m\u1ed9t tr\u01b0\u1eddng c\u1ea3m bi\u1ebfn h\u1eb9p ch\u1ec9 c\u00e1ch v\u00e0i milimet ph\u00eda tr\u00ean mi\u1ec7ng khu\u00f4n v\u00e0 \u0111i c\u00f9ng v\u1edbi c\u1ea7n \u00e9p cho \u0111\u1ebfn \u0111i\u1ec3m t\u1eaft c\u1ea3m bi\u1ebfn \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh. Thay v\u00ec b\u1ea3o v\u1ec7 kho\u1ea3ng tr\u1ed1ng c\u00e1ch 200mm, ch\u00fang b\u1ea3o v\u1ec7 ngay t\u1ea1i \u0111i\u1ec3m k\u1eb9p \u2014 v\u00e0 s\u1ebd d\u1eebng c\u1ea7n \u00e9p n\u1ebfu b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec \u0111i v\u00e0o v\u00f9ng \u0111\u00f3 tr\u01b0\u1edbc khi \u0111\u1ea1t \u0111\u1ed9 s\u00e2u t\u1eaft c\u1ea3m bi\u1ebfn.<\/p>\n\n\n\n

Kh\u00f4ng c\u00f3 v\u00f9ng m\u00f9 gi\u1eefa r\u00e8m v\u00e0 khu\u00f4n. Kh\u00f4ng ph\u1ea3i l\u00f9i l\u1ea1i. Kh\u00f4ng b\u1ecb ng\u1eaft ch\u00f9m tia gi\u1eefa h\u00e0nh tr\u00ecnh do h\u00ecnh d\u1ea1ng c\u1ee7a ph\u1ea7n kim lo\u1ea1i.<\/p>\n\n\n\n

C\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i c\u00f2n cho ph\u00e9p b\u1ea1n chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c ch\u1ebf \u0111\u1ed9 \u2014 laser cho u\u1ed1n h\u1ed9p ch\u1eb7t, r\u00e8m \u00e1nh s\u00e1ng cho d\u1ee5ng c\u1ee5 cao ho\u1eb7c b\u1ea3o v\u1ec7 to\u00e0n chi\u1ec1u \u2014 th\u00f4ng qua HMI, v\u1edbi gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea3 hai. C\u00e1ch ti\u1ebfp c\u1eadn lai n\u00e0y lo\u1ea1i b\u1ecf cu\u1ed9c tranh lu\u1eadn c\u0169 ki\u1ec3u \u201cho\u1eb7c c\u00e1i n\u00e0y ho\u1eb7c c\u00e1i kia\u201d.<\/p>\n\n\n\n

Vi\u1ec7c ng\u1eaft qu\u1ea5y nhi\u1ec5u kh\u00f4ng ph\u1ea3i b\u1eb1ng ch\u1ee9ng r\u1eb1ng r\u00e8m \u00e1nh s\u00e1ng v\u00f4 d\u1ee5ng. N\u00f3 l\u00e0 b\u1eb1ng ch\u1ee9ng r\u1eb1ng vi\u1ec7c b\u1ea3o v\u1ec7 d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch v\u00e0 b\u1ea3o v\u1ec7 t\u1ea1i \u0111i\u1ec3m v\u1eadn h\u00e0nh \u0111ang gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau.<\/p>\n\n\n\n

G\u1eafn r\u00e8m \u0111\u1ee7 xa \u0111\u1ec3 \u0111\u00e1p \u1ee9ng kho\u1ea3ng c\u00e1ch d\u1eebng th\u1ef1c t\u1ebf th\u00ec m\u1ea5t s\u1ef1 g\u1ea7n k\u1ec1. G\u1eafn n\u00f3 g\u1ea7n m\u00e0 kh\u00f4ng x\u00e1c nh\u1eadn th\u1eddi gian d\u1eebng th\u00ec m\u1ea5t tu\u00e2n th\u1ee7.<\/p>\n\n\n\n

V\u00e0 n\u1ebfu t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch an to\u00e0n c\u1ee7a b\u1ea1n kh\u00f4ng kh\u1edbp v\u1edbi hi\u1ec7u su\u1ea5t d\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c ghi ch\u00e9p, b\u1ea1n v\u1eeba trao cho thanh tra m\u1ed9t gi\u1ea5y ph\u1ea1t mang t\u00ean b\u1ea1n.<\/p>\n\n\n\n

Logic t\u1eaft c\u1ea3m bi\u1ebfn vs. \u0110\u00e8 n\u00e9n to\u00e0n b\u1ed9: C\u1ea5u h\u00ecnh u\u1ed1n m\u00e0 kh\u00f4ng trao cho thanh tra c\u01a1 h\u1ed9i vi ph\u1ea1m mi\u1ec5n ph\u00ed.<\/h3>\n\n\n\n

Gi\u1edd ch\u00fang ta \u0111i v\u00e0o ph\u1ea7n m\u00e0 c\u00e1c x\u01b0\u1edfng th\u01b0\u1eddng l\u00e0m h\u1ecfng.<\/p>\n\n\n\n

Trong qu\u00e1 tr\u00ecnh u\u1ed1n h\u1ed9p, m\u00e9p g\u1ea5p ph\u1ea3i \u0111i v\u00e0o v\u00f9ng ph\u00e1t hi\u1ec7n. N\u1ebfu h\u1ec7 th\u1ed1ng d\u1eebng m\u1ed7i khi kim lo\u1ea1i c\u1eaft ngang tia, b\u1ea1n s\u1ebd kh\u00f4ng bao gi\u1edd ho\u00e0n th\u00e0nh m\u1ed9t chi ti\u1ebft. V\u00ec v\u1eady, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng t\u1eaft t\u1ea1m \u2014 m\u1ed9t \u0111i\u1ec3m \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh trong h\u00e0nh tr\u00ecnh m\u00e0 AOPD cho ph\u00e9p v\u1eadt li\u1ec7u \u0111i v\u00e0o v\u00ec kho\u1ea3ng tr\u1ed1ng c\u00f2n l\u1ea1i nh\u1ecf h\u01a1n kho\u1ea3ng c\u00e1ch an to\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p>\n\n\n\n

N\u1ebfu th\u1ef1c hi\u1ec7n \u0111\u00fang, ch\u1ee9c n\u0103ng t\u1eaft t\u1ea1m \u0111\u01b0\u1ee3c g\u1eafn tr\u1ef1c ti\u1ebfp v\u1edbi kho\u1ea3ng c\u00e1ch d\u1eebng \u0111o \u0111\u01b0\u1ee3c. N\u1ebfu ph\u1ea7n v\u01b0\u1ee3t qu\u00e1 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh c\u1ee7a b\u1ea1n l\u00e0 13mm<\/strong><\/em>, \u0111i\u1ec3m t\u1eaft t\u1ea1m \u0111\u01b0\u1ee3c \u0111\u1eb7t sao cho tr\u1ee5c \u00e9p kh\u00f4ng th\u1ec3 di chuy\u1ec3n qu\u00e1 kho\u1ea3ng c\u00e1ch c\u00f2n l\u1ea1i \u0111\u00f3 tr\u01b0\u1edbc khi d\u1eebng ho\u00e0n to\u00e0n.<\/p>\n\n\n\n

N\u1ebfu l\u00e0m qua loa, ng\u01b0\u1eddi v\u1eadn h\u00e0nh s\u1ebd \u201cche\u201d c\u00e1c v\u00f9ng ho\u1eb7c v\u00f4 hi\u1ec7u h\u00f3a thi\u1ebft b\u1ecb cho ti\u1ec7n.<\/p>\n\n\n\n

Vi\u1ec7c v\u00f4 hi\u1ec7u h\u00f3a to\u00e0n b\u1ed9 c\u1ea3m gi\u00e1c nh\u01b0 \u0111ang t\u0103ng n\u0103ng su\u1ea5t. Cho \u0111\u1ebfn khi ai \u0111\u00f3 th\u00f2 tay v\u00e0o trong kho\u1ea3ng th\u1eddi gian kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u00f3.<\/p>\n\n\n\n

Theo ANSI B11.3<\/strong><\/em>, ch\u1ee9c n\u0103ng t\u1eaft t\u1ea1m ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, ghi ch\u00e9p, v\u00e0 g\u1eafn v\u1edbi hi\u1ec7u su\u1ea5t d\u1eebng c\u1ee7a ch\u00ednh m\u00e1y \u0111\u00f3. Nhi\u1ec1u AOPD hi\u1ec7n \u0111\u1ea1i gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng \u1edf m\u1ed7i h\u00e0nh tr\u00ecnh v\u00e0 s\u1ebd kh\u00f3a m\u00e1y n\u1ebfu \u0111\u1ed9 l\u1ec7ch v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p. \u0110\u00f3 kh\u00f4ng ph\u1ea3i h\u1ec7 th\u1ed1ng g\u00e2y kh\u00f3 d\u1ec5. \u0110\u00f3 l\u00e0 n\u00f3 ng\u0103n vi\u1ec7c t\u00ednh to\u00e1n \u0111i\u1ec3m t\u1eaft t\u1ea1m c\u1ee7a b\u1ea1n tr\u1edf th\u00e0nh h\u01b0 c\u1ea5u.<\/p>\n\n\n\n

T\u00f4i \u0111\u00e3 th\u1ea5y c\u00e1c x\u01b0\u1edfng v\u00f4 hi\u1ec7u h\u00f3a gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng v\u00ec c\u00e1c l\u1ea7n kh\u00f3a m\u00e1y phi\u1ec1n ph\u1ee9c l\u00e0m ch\u1eadm s\u1ea3n xu\u1ea5t. H\u1ecd v\u1eabn \u201cch\u1ea1y laser\u201d.\u201d<\/p>\n\n\n\n

Anh ta \u201ctu\u00e2n th\u1ee7.\u201d<\/p>\n\n\n\n

Cho \u0111\u1ebfn khi b\u00e1o c\u00e1o ki\u1ec3m tra so s\u00e1nh d\u1eef li\u1ec7u d\u1eebng \u0111\u00e3 ghi v\u1edbi c\u00f4ng th\u1ee9c kho\u1ea3ng c\u00e1ch an to\u00e0n y\u00eau c\u1ea7u theo 29 CFR 1910 Ph\u1ea7n O.<\/p>\n\n\n\n

B\u1ea1n kh\u00f4ng th\u1ec3 t\u1eaft t\u1ea1m c\u00e1c quy lu\u1eadt v\u1eadt l\u00fd. V\u00e0 b\u1ea1n kh\u00f4ng th\u1ec3 tranh lu\u1eadn v\u1ec1 s\u1ed1 h\u1ecdc v\u1edbi m\u1ed9t nh\u00e2n vi\u00ean tu\u00e2n th\u1ee7 c\u1ea7m th\u01b0\u1edbc d\u00e2y v\u00e0 nh\u1eadt k\u00fd b\u1ea3o tr\u00ec c\u1ee7a ch\u00ednh b\u1ea1n.<\/p>\n\n\n\n

Th\u1ef1c t\u1ebf Th\u1eddi gian Chu k\u1ef3: C\u00e1c con s\u1ed1 s\u1ea3n l\u01b0\u1ee3ng m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh kh\u00f4ng ng\u1edd t\u1edbi khi chuy\u1ec3n sang AOPD<\/h3>\n\n\n\n

H\u00e3y n\u00f3i v\u1ec1 th\u00f4ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n

Trong thi\u1ebft l\u1eadp \u0111i\u1ec1u khi\u1ec3n hai tay, h\u00e3y quan s\u00e1t m\u1ed9t ng\u01b0\u1eddi v\u1eadn h\u00e0nh gi\u00e0u kinh nghi\u1ec7m ch\u1ea1y 200 gi\u00e1 \u0111\u1ee1 nh\u1ecf. Tay r\u1eddi kh\u1ecfi chi ti\u1ebft. Nh\u1ea5n n\u00fat. Ch\u1edd h\u1ea1 xu\u1ed1ng. Tay quay l\u1ea1i. \u0110\u1ecbnh v\u1ecb l\u1ea1i.<\/p>\n\n\n\n

Chu\u1ed7i vi thao t\u00e1c \u0111\u00f3 m\u1ea5t kho\u1ea3ng n\u1eeda gi\u00e2y l\u00e2u h\u01a1n m\u1ed7i chu k\u1ef3 so v\u1edbi vi\u1ec7c gi\u1eef tay \u1edf chi ti\u1ebft.<\/p>\n\n\n\n

N\u1eeda gi\u00e2y nghe c\u00f3 v\u1ebb kh\u00f4ng \u0111\u00e1ng k\u1ec3. Nh\u01b0ng v\u1edbi 200 chi ti\u1ebft, \u0111\u00f3 l\u00e0 100 gi\u00e2y. V\u1edbi 1.000 chi ti\u1ebft, \u0111\u00f3 l\u00e0 h\u01a1n t\u00e1m ph\u00fat. V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi t\u00ednh \u0111\u1ebfn c\u00e1c vi ch\u1eadm tr\u1ec5, nh\u1ea5n n\u00fat sai, t\u01b0 th\u1ebf kh\u00f3 ch\u1ecbu l\u00e0m ch\u1eadm \u0111\u1ecbnh v\u1ecb.<\/p>\n\n\n\n

V\u1edbi AOPD \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n, tay ng\u01b0\u1eddi v\u1eadn h\u00e0nh kh\u00f4ng bao gi\u1edd r\u1eddi kh\u1ecfi chi ti\u1ebft tr\u1eeb khi h\u1ecd mu\u1ed1n. Tr\u1ee5c \u00e9p h\u1ea1 xu\u1ed1ng v\u1edbi t\u1ed1c \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng, b\u1ea3o v\u1ec7 ho\u1ea1t \u0111\u1ed9ng cho \u0111\u1ebfn khi t\u1eaft t\u1ea1m. Kh\u00f4ng b\u01b0\u1edbc l\u00f9i. Kh\u00f4ng v\u1edbi tay nh\u1ea5n n\u00fat. Ch\u1ec9 c\u1ea7n n\u1ea1p, c\u0103n ch\u1ec9nh, chu k\u1ef3, l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n

C\u00e1c x\u01b0\u1edfng th\u01b0\u1eddng ngh\u0129 an to\u00e0n s\u1ebd t\u1ed1n th\u1eddi gian. Khi h\u1ecd chuy\u1ec3n t\u1eeb \u0111i\u1ec1u khi\u1ec3n hai tay sang AOPD \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang tr\u00ean m\u00e1y \u00e9p \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n trong 14mm<\/strong><\/em>, h\u1ecd th\u01b0\u1eddng ng\u1ea1c nhi\u00ean khi th\u1ea5y th\u1eddi gian chu k\u1ef3 b\u1eb1ng ho\u1eb7c nhanh h\u01a1n \u2014 v\u00ec chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u00e3 ng\u1eafn h\u01a1n.<\/p>\n\n\n\n

Chuy\u1ec3n \u0111\u1ed9ng ng\u1eafn h\u01a1n. \u00cdt m\u1ec7t m\u1ecfi h\u01a1n. \u00cdt vi ch\u1eadm tr\u1ec5 h\u01a1n.<\/p>\n\n\n\n

Nh\u01b0ng \u0111i\u1ec1u n\u00e0y ch\u1ec9 \u0111\u00fang n\u1ebfu hi\u1ec7u su\u1ea5t d\u1eebng c\u1ee7a m\u00e1y l\u00e0 th\u1ef1c t\u1ebf v\u00e0 \u1ed5n \u0111\u1ecbnh. N\u1ebfu \u0111\u1ed9 tr\u1ec5 th\u1ee7y l\u1ef1c bu\u1ed9c b\u1ea1n ph\u1ea3i l\u1eafp \u0111\u1eb7t b\u1ea3o v\u1ec7 \u1edf v\u1ecb tr\u00ed xa h\u01a1n, b\u1ea1n s\u1ebd l\u1ea1i ph\u1ea3i b\u01b0\u1edbc ra kh\u1ecfi v\u00f9ng v\u00e0 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t \u0111\u00f3.<\/p>\n\n\n\n

V\u1eady \u0111\u00e2y l\u00e0 ranh gi\u1edbi c\u1ee9ng.<\/p>\n\n\n\n

N\u1ebfu phanh c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 d\u1eebng m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady trong 14mm<\/strong><\/em>, b\u1ea1n ho\u1eb7c s\u1eeda h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c, ch\u1ea5p nh\u1eadn kho\u1ea3ng c\u00e1ch an to\u00e0n t\u0103ng l\u00ean v\u1edbi \u0111\u1ed9 g\u1ea7n gi\u1ea3m, ho\u1eb7c ti\u1ebfp t\u1ee5c d\u00f9ng \u0111i\u1ec1u khi\u1ec3n hai tay v\u00e0 s\u1ea3n l\u01b0\u1ee3ng ch\u1eadm h\u01a1n. AOPD kh\u00f4ng ph\u1ea3i ph\u00e9p thu\u1eadt. N\u00f3 l\u00e0 to\u00e1n h\u1ecdc v\u1eadn h\u00e0nh tr\u00ean d\u1ea7u v\u00e0 th\u00e9p.<\/p>\n\n\n\n

V\u00e0 n\u1ebfu b\u1ea1n tuy\u00ean b\u1ed1 b\u1ea3o v\u1ec7 c\u1eadn k\u1ec1 m\u00e0 kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u d\u1eebng \u0111\u01b0\u1ee3c ghi ch\u00e9p \u0111\u1ec3 ch\u1ee9ng minh, th\u00ec l\u1ee3i \u00edch s\u1ea3n xu\u1ea5t s\u1ebd kh\u00f4ng c\u00f2n \u00fd ngh\u0129a khi kho\u1ea3n ph\u1ea1t n\u1eb1m tr\u00ean b\u00e0n b\u1ea1n.<\/p>\n\n\n\n

Khi AOPD g\u1eb7p tr\u1ee5c tr\u1eb7c (V\u00e0 C\u00e1ch Duy Tr\u00ec S\u1ea3n Xu\u1ea5t)<\/h2>\n\n\n\n

M\u00f9a thu n\u0103m ngo\u00e1i t\u00f4i \u0111\u1ee9ng c\u1ea1nh m\u1ed9t m\u00e1y ch\u1ea5n 10 foot trong khi m\u1ed9t nh\u00e2n vi\u00ean tu\u00e2n th\u1ee7 OSHA l\u1eadt qua m\u1ed9t t\u1eadp h\u1ed3 s\u01a1 v\u00e0 h\u1ecfi ba \u0111i\u1ec1u: k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m th\u1eddi gian d\u1eebng m\u1edbi nh\u1ea5t, b\u1eb1ng ch\u1ee9ng \u0111\u00e1nh gi\u00e1 r\u1ee7i ro theo ANSI B11.3<\/strong><\/em>, v\u00e0 h\u1ed3 s\u01a1 cho th\u1ea5y thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng ch\u01b0a b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a. X\u01b0\u1edfng c\u00f3 l\u1eafp laser tr\u00ean c\u1ea7n m\u00e1y. Ch\u1ee7 x\u01b0\u1edfng c\u1ee9 n\u00f3i, \u201cCh\u00fang t\u00f4i \u0111\u01b0\u1ee3c b\u1ea3o \u0111\u1ea3m.\u201d<\/p>\n\n\n\n

Thanh tra kh\u00f4ng quan t\u00e2m \u0111\u1ebfn ph\u1ea7n c\u1ee9ng. \u00d4ng \u1ea5y quan t\u00e2m \u0111\u1ebfn c\u00e1c con s\u1ed1.<\/p>\n\n\n\n

\u00d4ng mu\u1ed1n c\u00f3 d\u1eef li\u1ec7u v\u01b0\u1ee3t qu\u00e1 \u0111\u01b0\u1ee3c ghi l\u1ea1i b\u1eb1ng milim\u00e9t \u1edf nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh \u0111\u1ea7y \u0111\u1ee7, x\u00e1c nh\u1eadn r\u1eb1ng h\u1ec7 th\u1ed1ng d\u1eebng trong 14mm<\/strong><\/em> d\u01b0\u1edbi t\u1ea3i x\u1ea5u nh\u1ea5t, v\u00e0 b\u1eb1ng ch\u1ee9ng r\u1eb1ng c\u00e1c \u0111i\u1ec3m t\u1eaft \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n t\u1eeb d\u1eef li\u1ec7u \u0111\u00f3 \u2014 kh\u00f4ng ph\u1ea3i \u0111o\u00e1n. \u00d4ng so s\u00e1nh kho\u1ea3ng c\u00e1ch d\u1eebng \u0111\u00e3 ghi v\u1edbi \u0111\u1ed9 s\u00e2u t\u1eaft \u0111\u00e3 c\u1ea5u h\u00ecnh. Sau \u0111\u00f3 \u00f4ng y\u00eau c\u1ea7u nh\u1eadt k\u00fd b\u1ea3o tr\u00ec \u0111\u1ec3 ch\u1ee9ng minh hi\u1ec7u su\u1ea5t ch\u01b0a b\u1ecb l\u1ec7ch.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 h\u00ecnh \u1ea3nh \u201cs\u1eb5n s\u00e0ng ki\u1ec3m tra\u201d trong th\u1ef1c t\u1ebf: kho\u1ea3ng c\u00e1ch d\u1eebng \u0111o \u0111\u01b0\u1ee3c (l\u00fac l\u1ea1nh v\u00e0 l\u00fac n\u00f3ng), kho\u1ea3ng c\u00e1ch an to\u00e0n \u0111\u00e3 t\u00ednh to\u00e1n, logic t\u1eaft li\u00ean k\u1ebft, gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c b\u1eadt, v\u00e0 \u0111\u00e1nh gi\u00e1 r\u1ee7i ro l\u01b0u h\u1ed3 s\u01a1 tham chi\u1ebfu ANSI B11.3<\/strong><\/em> v\u00e0 ph\u01b0\u01a1ng ph\u00e1p B11.0. Kh\u00f4ng ph\u1ea3i nh\u00e3n d\u00e1n. Kh\u00f4ng ph\u1ea3i t\u1edd qu\u1ea3ng c\u00e1o. L\u00e0 ph\u00e9p to\u00e1n b\u1ea1n c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7.<\/p>\n\n\n\n

V\u00e0 n\u1ebfu gi\u1ea5y t\u1edd c\u1ee7a b\u1ea1n ghi 14mm<\/strong><\/em> nh\u01b0ng l\u1ea7n d\u1eebng \u0111\u01b0\u1ee3c x\u00e1c minh g\u1ea7n nh\u1ea5t l\u00e0 18, th\u00ec kho\u1ea3n ph\u1ea1t s\u1ebd \u0111\u1ebfn k\u00e8m theo l\u00e3i su\u1ea5t.<\/p>\n\n\n\n

Gi\u1edd h\u00e3y n\u00f3i v\u1ec1 n\u01a1i m\u00e0 to\u00e1n h\u1ecdc g\u1eb7p th\u1ebf gi\u1edbi th\u1ef1c.<\/p>\n\n\n\n

Ch\u1ea5n h\u1ed9p ph\u1ee9c t\u1ea1p: Khi h\u00ecnh d\u1ea1ng chi ti\u1ebft bu\u1ed9c tay l\u1ea1i g\u1ea7n khu\u00f4n<\/h3>\n\n\n\n

H\u00e3y h\u00ecnh dung m\u1ed9t h\u1ed9p b\u1ed1n m\u1eb7t, g\u1edd 3 inch \u1edf t\u1ea5t c\u1ea3 c\u00e1c c\u1ea1nh. \u1ede l\u1ea7n ch\u1ea5n th\u1ee9 ba, nh\u1eefng g\u1edd \u0111\u00f3 d\u1ef1ng l\u00ean nh\u01b0 s\u1eebng. Khi c\u1ea7n m\u00e1y h\u1ea1 xu\u1ed1ng, b\u1ea3n th\u00e2n chi ti\u1ebft \u0111i v\u00e0o v\u00f9ng c\u1ea3m bi\u1ebfn. V\u1edbi r\u00e8m s\u00e1ng truy\u1ec1n th\u1ed1ng l\u1eafp c\u00e1ch hai feet, b\u1ea1n ph\u1ea3i t\u1eaft v\u00f9ng c\u1ea3m bi\u1ebfn b\u00ean tr\u00e1i v\u00e0 b\u00ean ph\u1ea3i ch\u1ec9 \u0111\u1ec3 ho\u00e0n th\u00e0nh chi ti\u1ebft.<\/p>\n\n\n\n

T\u1eaft v\u00f9ng c\u1ea3m bi\u1ebfn kh\u00f4ng ph\u1ea3i l\u00e0 x\u1ea5u. T\u1eaft v\u00f9ng c\u1ea3m bi\u1ebfn m\u1ed9t c\u00e1ch m\u00f9 qu\u00e1ng m\u1edbi l\u00e0 x\u1ea5u.<\/p>\n\n\n\n

Theo ANSI B11.3<\/strong><\/em>, AOPD c\u1eadn k\u1ec1 ch\u1ec9 \u0111\u01b0\u1ee3c ph\u00e9p sau khi c\u00f3 \u0111\u00e1nh gi\u00e1 r\u1ee7i ro \u0111\u01b0\u1ee3c ghi ch\u00e9p. \u0110\u00e1nh gi\u00e1 \u0111\u00f3 ph\u1ea3i xem x\u00e9t h\u00ecnh d\u1ea1ng chi ti\u1ebft, chi\u1ec1u cao d\u1ee5ng c\u1ee5, t\u1ea7m v\u1edbi c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, v\u00e0 hi\u1ec7u su\u1ea5t d\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn c\u1ee7a m\u00e1y. N\u1ebfu g\u1edd bu\u1ed9c tay ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00e0o trong kho\u1ea3ng 14mm<\/strong><\/em> d\u1eebng c\u1eeda s\u1ed5 tr\u01b0\u1edbc khi t\u1eaft ti\u1ebfng, b\u1ea1n ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh quy tr\u00ecnh ho\u1eb7c chuy\u1ec3n ch\u1ebf \u0111\u1ed9.<\/p>\n\n\n\n

C\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i cho ph\u00e9p b\u1ea1n chuy\u1ec3n t\u1eeb laser sang r\u00e8m th\u00f4ng qua HMI, v\u1edbi gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea3 hai ch\u1ebf \u0111\u1ed9. Thi\u1ebft l\u1eadp lai n\u00e0y x\u1eed l\u00fd kho\u1ea3ng 95% c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh \u0111i\u1ec3n h\u00ecnh. 5% c\u00f2n l\u1ea1i\u2014h\u1ed9p ch\u1eb7t, d\u1ee5ng c\u1ee5 cao, l\u1ea7n d\u1eadp l\u1ea1i kh\u00f3 x\u1eed\u2014\u0111\u00f2i h\u1ecfi k\u1ef7 lu\u1eadt. \u0110\u00f4i khi \u0111i\u1ec1u \u0111\u00f3 ngh\u0129a l\u00e0 ch\u1ebf \u0111\u1ed9 t\u1ed1c \u0111\u1ed9 an to\u00e0n cho m\u1ed9t ph\u1ea7n h\u00e0nh tr\u00ecnh. \u0110\u00f4i khi ngh\u0129a l\u00e0 s\u1eafp x\u1ebfp l\u1ea1i th\u1ee9 t\u1ef1 u\u1ed1n \u0111\u1ec3 gi\u1eef tay tr\u00e1nh xa trong khi ch\u1ea1y t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00f3 kh\u00f4ng bao gi\u1edd c\u00f3 ngh\u0129a l\u00e0 v\u00f4 hi\u1ec7u h\u00f3a thi\u1ebft b\u1ecb v\u00ec \u201cph\u1ea7n c\u1ee9 l\u00e0m n\u00f3 k\u00edch ho\u1ea1t.\u201d<\/p>\n\n\n\n

T\u00f4i t\u1eebng th\u1ea5y m\u1ed9t c\u00f4ng nh\u00e2n tr\u1ebb v\u1edbi tay v\u00f2ng qua v\u00f9ng b\u1ecb t\u1eaft m\u1ed9t ph\u1ea7n \u0111\u1ec3 gi\u1eef \u1ed5n \u0111\u1ecbnh m\u1ed9t v\u00e1ch h\u1ed9p. C\u1ea7n \u00e9p ch\u1ea1y qu\u00e1 h\u01a1n d\u1ef1 ki\u1ebfn\u2014\u0111\u1ed9 tr\u1ec5 th\u1ee7y l\u1ef1c v\u00e0o bu\u1ed5i s\u00e1ng l\u1ea1nh. Anh ta m\u1ea5t \u0111\u1ea7u ng\u00f3n tr\u1ecf. C\u1eaft g\u1ecdn. Kh\u00f4ng k\u1ecbch t\u00ednh. Ch\u1ec9 l\u00e0 h\u00e0m th\u00e9p \u0111\u00f3ng th\u00eam v\u00e0i milimet so v\u1edbi gi\u1ea3 \u0111\u1ecbnh tr\u00ean gi\u1ea5y t\u1edd.<\/p>\n\n\n\n

B\u1ea1n c\u00f3 th\u1ec3 tranh lu\u1eadn v\u1edbi l\u1ecbch s\u1ea3n xu\u1ea5t. B\u1ea1n kh\u00f4ng th\u1ec3 tranh lu\u1eadn v\u1edbi \u0111\u1ed9 nh\u1edbt c\u1ee7a d\u1ea7u v\u00e0 tr\u1ecdng l\u1ef1c.<\/p>\n\n\n\n

N\u1ebfu \u0111\u00e1nh gi\u00e1 r\u1ee7i ro c\u1ee7a b\u1ea1n kh\u00f4ng \u0111\u1ec1 c\u1eadp r\u00f5 r\u00e0ng \u0111\u1ebfn h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p, m\u1ed9t thanh tra s\u1ebd l\u00e0m \u0111i\u1ec1u \u0111\u00f3\u2014v\u00e0 \u00f4ng ta s\u1ebd \u0111\u1ecbnh gi\u00e1 cho s\u1ef1 b\u1ecf s\u00f3t \u0111\u00f3 t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

C\u00e1c chi ti\u1ebft nh\u1ecf v\u00e0 c\u00f4ng vi\u1ec7c g\u1ea7n k\u1ec1: Khi ch\u1ebf \u0111\u1ed9 t\u1ed1c \u0111\u1ed9 an to\u00e0n ph\u1ea3i \u0111\u1ea3m nhi\u1ec7m<\/h3>\n\n\n\n

Gi\u1edd h\u00e3y l\u1ea5y m\u1ed9t chi ti\u1ebft r\u1ed9ng hai inch. \u0110\u1ea7u ng\u00f3n tay c\u1ee7a c\u00f4ng nh\u00e2n t\u1ef1 nhi\u00ean n\u1eb1m trong ph\u1ea1m vi m\u1ed9t inch t\u1eeb mi\u1ec7ng khu\u00f4n khi c\u0103n ch\u1ec9nh. \u1ede t\u1ed1c \u0111\u1ed9 ti\u1ebfp c\u1eadn t\u1ed1i \u0111a, s\u1ef1 b\u1ea3o v\u1ec7 duy nh\u1ea5t c\u1ee7a b\u1ea1n l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a AOPD ph\u00e1t hi\u1ec7n s\u1ef1 x\u00e2m nh\u1eadp v\u00e0 ra l\u1ec7nh d\u1eebng tr\u01b0\u1edbc khi c\u1ea7n \u00e9p di chuy\u1ec3n qu\u00e1 14mm<\/strong><\/em>.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00f3 gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c c\u1ee7a b\u1ea1n ph\u1ea3n \u1ee9ng t\u1ee9c th\u00ec v\u00e0 l\u1eb7p l\u1ea1i ch\u00ednh x\u00e1c.<\/p>\n\n\n\n

Tr\u00ean c\u00e1c m\u00e1y \u00e9p c\u0169, th\u1eddi gian ph\u1ea3n \u1ee9ng c\u1ee7a van t\u1ea1o ra kho\u1ea3ng c\u00e1ch \u0111o \u0111\u01b0\u1ee3c gi\u1eefa t\u00edn hi\u1ec7u d\u1eebng v\u00e0 d\u1eebng c\u01a1 h\u1ecdc. T\u00f4i \u0111\u00e3 ghi nh\u1eadn c\u00e1c m\u00e1y \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n khi \u1ea5m nh\u01b0ng v\u01b0\u1ee3t qu\u00e1 khi l\u1ea1nh v\u00e0i milimet. S\u1ef1 tr\u00f4i n\u00e0y bu\u1ed9c ph\u1ea3i ch\u1ecdn m\u1ed9t trong hai: t\u0103ng kho\u1ea3ng c\u00e1ch an to\u00e0n\u2014gi\u1ebft kh\u1ea3 n\u0103ng l\u00e0m vi\u1ec7c g\u1ea7n\u2014ho\u1eb7c gi\u1edbi h\u1ea1n c\u1ea7n \u00e9p \u1edf \u226410mm\/s cho to\u00e0n b\u1ed9 h\u00e0nh tr\u00ecnh.<\/p>\n\n\n\n

M\u01b0\u1eddi milimet m\u1ed7i gi\u00e2y.<\/p>\n\n\n\n

\u1ede t\u1ed1c \u0111\u1ed9 \u0111\u00f3, b\u1ea1n \u0111\u00e3 x\u00f3a l\u1ee3i th\u1ebf th\u00f4ng l\u01b0\u1ee3ng so v\u1edbi \u0111i\u1ec1u khi\u1ec3n hai tay. Th\u1eddi gian chu k\u1ef3 k\u00e9o d\u00e0i. C\u00f4ng nh\u00e2n tr\u1edf n\u00ean m\u1ea5t ki\u00ean nh\u1eabn. Ban qu\u1ea3n l\u00fd b\u1eaft \u0111\u1ea7u h\u1ecfi t\u1ea1i sao m\u00e1y \u00e9p laser \u201cnhanh h\u01a1n\u201d l\u1ea1i c\u1ea3m th\u1ea5y ch\u1eadm.<\/p>\n\n\n\n

B\u1edfi v\u00ec v\u1eadt l\u00fd \u0111\u1eb7t gi\u1edbi h\u1ea1n.<\/p>\n\n\n\n

Ch\u1ebf \u0111\u1ed9 t\u1ed1c \u0111\u1ed9 an to\u00e0n t\u1ed3n t\u1ea1i v\u00ec m\u1ed9t l\u00fd do. S\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a cho ti\u1ebfp c\u1eadn v\u1edbi AOPD ho\u1ea1t \u0111\u1ed9ng khi \u0111\u00e3 x\u00e1c minh. Chuy\u1ec3n sang t\u1ed1c \u0111\u1ed9 an to\u00e0n khi tay ph\u1ea3i \u1edf g\u1ea7n v\u00e0 h\u00ecnh d\u1ea1ng kh\u00f4ng cho ph\u00e9p t\u00e1ch t\u1eaft ti\u1ebfng \u0111\u00e1ng tin c\u1eady. L\u1eadp tr\u00ecnh n\u00f3. Ghi ch\u00e9p n\u00f3. Hu\u1ea5n luy\u1ec7n theo n\u00f3.<\/p>\n\n\n\n

N\u1ebfu thi\u1ebft b\u1ecb an to\u00e0n c\u1ee7a b\u1ea1n b\u1ea3o v\u1ec7 m\u00e1y m\u00f3c \u0111\u00e1ng tin c\u1eady h\u01a1n c\u01a1 th\u1ec3 ng\u01b0\u1eddi v\u1eadn h\u00e0nh, th\u00ec b\u1ea1n \u0111ang t\u1ed1i \u01b0u h\u00f3a cho \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n

Ch\u1ea1y c\u00e1c chi ti\u1ebft nh\u1ecf \u1edf t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u d\u1eebng \u0111\u00e3 x\u00e1c minh, b\u1ea1n kh\u00f4ng ch\u1ec9 m\u1ea1o hi\u1ec3m ng\u00f3n tay\u2014b\u1ea1n \u0111ang \u0111\u00e1nh c\u01b0\u1ee3c v\u1edbi m\u1ed9t gi\u1ea5y ph\u1ea1t s\u1ebd ghi r\u00f5 t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a c\u1ea7n \u00e9p b\u1eb1ng m\u1ef1c \u0111en.<\/p>\n\n\n\n

\u0110i\u1ec3m m\u00f9 b\u1ea3o tr\u00ec: Nhi\u1ec5m b\u1ea9n, l\u1ec7ch v\u1ecb tr\u00ed v\u00e0 h\u1ecfng h\u00f3c \u00e2m th\u1ea7m<\/h3>\n\n\n\n

\u0110\u00e2y l\u00e0 n\u01a1i h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng m\u1ea5t c\u1ea3 an to\u00e0n l\u1eabn s\u1ea3n xu\u1ea5t: h\u1ecd l\u1eafp AOPD v\u00e0 qu\u00ean n\u00f3.<\/p>\n\n\n\n

Th\u1ea5u k\u00ednh laser t\u00edch t\u1ee5 s\u01b0\u01a1ng d\u1ea7u. Gi\u00e1 \u0111\u1ee1 b\u1ecb va ch\u1ea1m trong qu\u00e1 tr\u00ecnh thay khu\u00f4n. D\u00e2y d\u1eabn l\u1ecfng. H\u1ec7 th\u1ed1ng v\u1eabn b\u1eadt ngu\u1ed3n. \u0110\u00e8n b\u00e1o v\u1eabn xanh. Nh\u01b0ng c\u0103n ch\u1ec9nh tr\u00f4i t\u1eebng milimet m\u1ed9t.<\/p>\n\n\n\n

C\u00e1c AOPD hi\u1ec7n \u0111\u1ea1i v\u1edbi gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng t\u00edch h\u1ee3p s\u1ebd ph\u00e1t hi\u1ec7n sai l\u1ec7ch v\u00e0 ho\u1eb7c bu\u1ed9c ch\u1ebf \u0111\u1ed9 t\u1ed1c \u0111\u1ed9 an to\u00e0n ho\u1eb7c kh\u00f3a m\u00e1y. C\u00f4ng nh\u00e2n gh\u00e9t \u0111i\u1ec1u \u0111\u00f3. Gi\u00e1m s\u00e1t vi\u00ean c\u00f2n gh\u00e9t h\u01a1n. V\u00ec v\u1eady ai \u0111\u00f3 v\u00f4 hi\u1ec7u h\u00f3a gi\u00e1m s\u00e1t \u201ct\u1ea1m th\u1eddi.\u201d<\/p>\n\n\n\n

Anh ta \u201ctu\u00e2n th\u1ee7.\u201d<\/p>\n\n\n\n

Cho \u0111\u1ebfn ng\u00e0y nhi\u1ec5m b\u1ea9n g\u00e2y l\u1ed7i ph\u00e1t hi\u1ec7n gi\u00e1n \u0111o\u1ea1n v\u00e0 m\u00e1y quay v\u1ec1 \u226410mm\/s m\u1ed7i h\u00e0nh tr\u00ecnh kh\u00e1c. S\u1ea3n xu\u1ea5t t\u1ee5t d\u1ed1c. Ho\u1eb7c t\u1ec7 h\u01a1n, h\u1ec7 th\u1ed1ng kh\u00f4ng ph\u00e1t hi\u1ec7n tay trong khi ti\u1ebfp c\u1eadn t\u1ed1c \u0111\u1ed9 cao v\u00ec h\u00ecnh h\u1ecdc tia \u0111\u00e3 l\u1ec7ch ra ngo\u00e0i dung sai \u0111\u00e3 hi\u1ec7u chu\u1ea9n.<\/p>\n\n\n\n

Ki\u1ec3m tra tr\u1ef1c quan h\u00e0ng ng\u00e0y. V\u1ec7 sinh h\u00e0ng tu\u1ea7n. X\u00e1c minh th\u1eddi gian d\u1eebng h\u00e0ng qu\u00fd \u0111\u01b0\u1ee3c ghi ch\u00e9p \u0111\u1ea7y \u0111\u1ee7 d\u01b0\u1edbi t\u1ea3i to\u00e0n ph\u1ea7n. \u0110\u00e1nh gi\u00e1 r\u1ee7i ro h\u00e0ng n\u0103m. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng c\u00f4ng vi\u1ec7c h\u00e0nh ch\u00ednh r\u01b0\u1eddm r\u00e0; ch\u00fang l\u00e0 nh\u1eefng \u0111i\u1ec1u gi\u1eef cho 14mm<\/strong><\/em> l\u1eddi h\u1ee9a tr\u1edf th\u00e0nh th\u1ef1c t\u1ebf thay v\u00ec ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft.<\/p>\n\n\n\n

C\u00e1ch nhanh nh\u1ea5t \u0111\u1ec3 m\u1ea5t c\u1ea3 b\u1ea3o v\u1ec7 l\u1eabn n\u0103ng su\u1ea5t l\u00e0 cho r\u1eb1ng c\u1ea3m bi\u1ebfn s\u1ebd c\u1ee9u b\u1ea1n trong khi b\u1ecf qua van kh\u00f4ng \u0111\u1ea1t ti\u00eau chu\u1ea9n ho\u1eb7c \u1ed1ng k\u00ednh b\u1ea1n ch\u01b0a lau trong s\u00e1u th\u00e1ng.<\/p>\n\n\n\n

B\u1ecf qua k\u1ef7 lu\u1eadt \u0111\u00f3, v\u00e0 ng\u01b0\u1eddi ti\u1ebfp theo t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch d\u1eebng c\u1ee7a b\u1ea1n s\u1ebd \u0111eo th\u1ebb v\u00e0 vi\u1ebft nh\u1eefng con s\u1ed1 b\u1eaft \u0111\u1ea7u b\u1eb1ng k\u00fd hi\u1ec7u \u0111\u00f4 la.<\/p>\n\n\n\n

X\u00e2y d\u1ef1ng H\u1ed3 s\u01a1 tu\u00e2n th\u1ee7 ANSI B11.3 c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua ki\u1ec3m tra OSHA<\/h2>\n\n\n\n

B\u1ea1n kh\u00f4ng duy tr\u00ec tr\u1ea1ng th\u00e1i s\u1eb5n s\u00e0ng ki\u1ec3m tra ch\u1ec9 b\u1eb1ng c\u00e1ch mua m\u1ed9t laser. B\u1ea1n duy tr\u00ec tr\u1ea1ng th\u00e1i s\u1eb5n s\u00e0ng ki\u1ec3m tra b\u1eb1ng c\u00e1ch x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 ch\u1ee9ng minh, theo y\u00eau c\u1ea7u, r\u1eb1ng m\u00e1y \u00e9p c\u1ee7a b\u1ea1n s\u1ebd d\u1eebng b\u00ean trong 14mm<\/strong><\/em> trong \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 \u0111i\u1ec3m xoay m\u00e0 h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng b\u1ecf l\u1ee1. H\u1ecd coi AOPD nh\u01b0 m\u1ed9t n\u00e2ng c\u1ea5p n\u0103ng su\u1ea5t v\u00e0 coi tu\u00e2n th\u1ee7 nh\u01b0 m\u1ed9t t\u1eadp h\u1ed3 s\u01a1 tr\u00ean k\u1ec7. Trong ANSI B11.3<\/strong><\/em>, hai \u0111i\u1ec1u \u0111\u00f3 l\u00e0 c\u00f9ng m\u1ed9t th\u1ee9. N\u1ebfu bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 c\u1ee7a b\u1ea1n kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u1ec1 \u0111i\u1ec1u khi\u1ec3n, \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c v\u00e0 ghi ch\u00e9p tr\u01b0\u1edbc khi ch\u1ea1y s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean, b\u1ea1n kh\u00f4ng tu\u00e2n th\u1ee7\u2014b\u1ea1n ch\u1ec9 may m\u1eafn. V\u00e0 may m\u1eafn s\u1ebd h\u1ebft v\u00e0o ng\u00e0y m\u1ed9t thanh tra y\u00eau c\u1ea7u b\u1ea3n x\u00e1c minh th\u1eddi gian d\u1eebng cu\u1ed1i c\u00f9ng d\u01b0\u1edbi t\u1ea3i to\u00e0n ph\u1ea7n.<\/p>\n\n\n\n

V\u1eady c\u00e2u h\u1ecfi kh\u00f4ng ph\u1ea3i l\u00e0 \u201cT\u00f4i c\u00f3 laser kh\u00f4ng?\u201d<\/p>\n\n\n\n

M\u00e0 l\u00e0 \u201cT\u00f4i c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 t\u1eebng milim\u00e9t h\u00e0nh tr\u00ecnh c\u1ee7a m\u00e1y \u00e9p gi\u1eefa ph\u00e1t hi\u1ec7n v\u00e0 d\u1eebng kh\u00f4ng?\u201d<\/p>\n\n\n\n

T\u00edch h\u1ee3p so v\u1edbi g\u1eafn th\u00eam: T\u1ea1i sao c\u1ea3m bi\u1ebfn \u0111\u1ed9c l\u1eadp kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u \u201c\u0111i\u1ec1u khi\u1ec3n \u0111\u00e1ng tin c\u1eady\u201d<\/h3>\n\n\n\n

\u201c\u0110i\u1ec1u khi\u1ec3n \u0111\u00e1ng tin c\u1eady\u201d ngh\u0129a l\u00e0 m\u1ed9t l\u1ed7i \u0111\u01a1n l\u1ebb kh\u00f4ng th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t ch\u1ee9c n\u0103ng an to\u00e0n. K\u00eanh k\u00e9p. Ph\u1ea3n h\u1ed3i \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t. Van d\u1ef1 ph\u00f2ng. Ph\u00e1t hi\u1ec7n l\u1ed7i bu\u1ed9c h\u1ec7 th\u1ed1ng v\u00e0o tr\u1ea1ng th\u00e1i an to\u00e0n. \u0110\u00f3 l\u00e0 ng\u00f4n ng\u1eef c\u1ee7a ANSI B11.3<\/strong><\/em> v\u00e0 to\u00e0n b\u1ed9 nh\u00f3m B11.<\/p>\n\n\n\n

M\u1ed9t m\u00e0n ch\u1eafn s\u00e1ng \u0111\u1ed9c l\u1eadp n\u1ed1i v\u00e0o m\u1ea1ch ly h\u1ee3p c\u0169 kh\u00f4ng ph\u1ea3i l\u00e0 nh\u01b0 v\u1eady. Laser n\u1ed1i v\u00e0o m\u1ed9t van \u0111i\u1ec7n t\u1eeb \u0111\u01a1n kh\u00f4ng gi\u00e1m s\u00e1t v\u1ecb tr\u00ed l\u00f5i van c\u0169ng kh\u00f4ng ph\u1ea3i. N\u1ebfu van b\u1ecb k\u1eb9t v\u00e0 m\u00e1y \u00e9p ch\u1ea1y qu\u00e1 14mm<\/strong><\/em>, c\u1ea3m bi\u1ebfn c\u1ee7a b\u1ea1n \u0111\u00e3 l\u00e0m \u0111\u00fang nhi\u1ec7m v\u1ee5. H\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c c\u1ee7a b\u1ea1n th\u00ec kh\u00f4ng. V\u00e0 ti\u00eau chu\u1ea9n kh\u00f4ng ch\u1ea5m \u0111i\u1ec3m d\u1ef1a tr\u00ean n\u1ed7 l\u1ef1c.<\/p>\n\n\n\n

T\u00edch h\u1ee3p ngh\u0129a l\u00e0 t\u00edn hi\u1ec7u AOPD \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ea1t chu\u1ea9n an to\u00e0n, gi\u00e1m s\u00e1t th\u1eddi gian d\u1eebng li\u00ean t\u1ee5c ho\u1eb7c theo kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh. Ngh\u0129a l\u00e0 van th\u1ee7y l\u1ef1c c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ho\u1eb7c c\u1ea3i ti\u1ebfn \u0111\u1ec3 c\u00f3 d\u1ef1 ph\u00f2ng v\u00e0 t\u1ef1 ki\u1ec3m tra. Ngh\u0129a l\u00e0 l\u1ed7i bu\u1ed9c m\u00e1y ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 an to\u00e0n ho\u1eb7c kh\u00f3a\u2014kh\u00f4ng ph\u1ea3i \u201cv\u1eabn ch\u1ea1y chu k\u1ef3\u201d.\u201d<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 n\u01a1i h\u1ea7u h\u1ebft c\u00e1c c\u1ea3i ti\u1ebfn b\u1ecb s\u1ee5p \u0111\u1ed5. C\u00e1c x\u01b0\u1edfng th\u00eam m\u1ed9t c\u1ea3m bi\u1ebfn cao c\u1ea5p v\u00e0o ki\u1ebfn tr\u00fac \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng n\u0103m 1992 v\u00e0 g\u1ecdi \u0111\u00f3 l\u00e0 hi\u1ec7n \u0111\u1ea1i. Anh ta \u201ctu\u00e2n th\u1ee7\u201d.\u201d<\/p>\n\n\n\n

Cho \u0111\u1ebfn khi m\u1ed9t thanh tra l\u1ea7n theo m\u1ea1ch an to\u00e0n, th\u1ea5y kh\u00f4ng c\u00f3 gi\u00e1m s\u00e1t ph\u1ea3n \u1ee9ng c\u1ee7a van, v\u00e0 h\u1ecfi b\u1ea1n \u0111\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch d\u1eebng n\u00e0o \u0111\u1ec3 bi\u1ec7n minh cho v\u1eadn h\u00e0nh g\u1ea7n. \u0110\u00f3 l\u00e0 l\u00fac cu\u1ed9c tr\u00f2 chuy\u1ec7n bi\u1ebfn th\u00e0nh gi\u1ea5y ph\u1ea1t c\u00f3 d\u1ea5u ph\u1ea9y.<\/p>\n\n\n\n

N\u1ebfu thi\u1ebft b\u1ecb an to\u00e0n c\u1ee7a b\u1ea1n b\u1ea3o v\u1ec7 m\u00e1y m\u00f3c \u0111\u00e1ng tin c\u1eady h\u01a1n c\u01a1 th\u1ec3 ng\u01b0\u1eddi v\u1eadn h\u00e0nh, th\u00ec b\u1ea1n \u0111ang t\u1ed1i \u01b0u h\u00f3a cho \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n

Ghi ch\u00e9p \u0111\u00e1nh gi\u00e1 m\u1ed1i nguy tr\u01b0\u1edbc khi b\u1ea1n ph\u00ea duy\u1ec7t mua h\u00e0ng<\/h3>\n\n\n\n

B\u1ea1n kh\u00f4ng b\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t c\u00e2u tr\u00edch d\u1eabn. B\u1ea1n b\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t \u0111\u00e1nh gi\u00e1 r\u1ee7i ro.<\/p>\n\n\n\n

Tr\u01b0\u1edbc khi m\u1ed9t \u0111\u01a1n \u0111\u1eb7t h\u00e0ng r\u1eddi kh\u1ecfi b\u00e0n l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n, b\u1ea1n ghi l\u1ea1i: m\u1eabu m\u00e1y, c\u00f4ng su\u1ea5t, th\u1eddi gian d\u1eebng \u0111o \u0111\u01b0\u1ee3c khi n\u00f3ng v\u00e0 khi l\u1ea1nh, chi\u1ec1u cao d\u1ee5ng c\u1ee5, h\u00ecnh d\u1ea1ng chi ti\u1ebft \u0111i\u1ec3n h\u00ecnh, ph\u1ea1m vi v\u1edbi t\u1edbi c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, v\u00e0 nh\u1eefng c\u00f4ng vi\u1ec7c n\u00e0o n\u1eb1m trong 14mm<\/strong><\/em> kho\u1ea3ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n. N\u1ebfu m\u00e1y kh\u00f4ng th\u1ec3 d\u1eebng \u1ed5n \u0111\u1ecbnh trong kho\u1ea3ng \u0111\u00f3, ti\u00eau chu\u1ea9n n\u00f3i th\u1eb3ng: n\u00f3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ee7 t\u1ed1t \u0111\u1ec3 l\u1eafp AOPD \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n.<\/p>\n\n\n\n

\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1edf th\u00edch. \u0110\u00f3 l\u00e0 s\u1ef1 lo\u1ea1i b\u1ecf.<\/p>\n\n\n\n

Gi\u1edd \u0111\u00e2y, ph\u1ea7n kh\u00f4ng r\u00f5 r\u00e0ng: \u0111\u00e1nh gi\u00e1 n\u00e0y b\u1ea3o v\u1ec7 s\u1ea3n xu\u1ea5t c\u0169ng nh\u01b0 an to\u00e0n. Khi b\u1ea1n l\u1eadp b\u1ea3n \u0111\u1ed3 nh\u1eefng c\u00f4ng vi\u1ec7c c\u1ea7n ch\u1ebf \u0111\u1ed9 lai\u2014laser c\u1ed9ng r\u00e8m, ho\u1eb7c laser c\u1ed9ng t\u1ed1c \u0111\u1ed9 an to\u00e0n\u2014b\u1ea1n tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh hu\u1ed1ng ho\u1ea3ng lo\u1ea1n chi\u1ec1u th\u1ee9 S\u00e1u khi ai \u0111\u00f3 v\u00f4 hi\u1ec7u h\u00f3a m\u1ed9t k\u00eanh v\u00ec \u201cchi ti\u1ebft c\u1ee9 l\u00e0m n\u00f3 k\u00edch ho\u1ea1t.\u201d B\u1ea1n \u0111\u00e3 x\u00e1c \u0111\u1ecbnh s\u1eb5n c\u00f4ng vi\u1ec7c n\u00e0o c\u1ea7n b\u1ea3o v\u1ec7 thay th\u1ebf v\u00e0 l\u1eadp tr\u00ecnh ch\u00fang t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

Thanh tra kh\u00f4ng mong s\u1ef1 ho\u00e0n h\u1ea3o. H\u1ecd mong b\u1eb1ng ch\u1ee9ng. M\u1ed9t b\u1ea3n \u0111\u00e1nh gi\u00e1 r\u1ee7i ro b\u1eb1ng v\u0103n b\u1ea3n tham chi\u1ebfu ANSI B11.3<\/strong><\/em> c\u00e1c \u0111i\u1ec1u kho\u1ea3n, c\u00e1c b\u00e0i ki\u1ec3m tra th\u1eddi gian d\u1eebng khi t\u1ea3i, v\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo nh\u00f3m c\u00f4ng vi\u1ec7c cho h\u1ecd th\u1ea5y b\u1ea1n \u0111ang qu\u1ea3n l\u00fd r\u1ee7i ro, kh\u00f4ng ph\u1ea3n \u1ee9ng v\u1edbi n\u00f3.<\/p>\n\n\n\n

H\u00e3y gi\u1ea3i th\u00edch cho h\u1ecd nh\u1eefng ph\u00e9p t\u00ednh \u0111\u00f3 m\u1ed9t c\u00e1ch b\u00ecnh t\u0129nh.<\/p>\n\n\n\n

Ho\u1eb7c \u0111\u1ec3 h\u1ecd t\u1ef1 l\u00e0m v\u1edbi m\u1ed9t chi\u1ebfc m\u00e1y t\u00ednh v\u00e0 b\u1ea3ng ph\u1ea1t.<\/p>\n\n\n\n

\u0110\u00e0o t\u1ea1o thay \u0111\u1ed5i tr\u00ed nh\u1edb c\u01a1 b\u1eafp: khi\u1ebfn ng\u01b0\u1eddi v\u1eadn h\u00e0nh tin t\u01b0\u1edfng h\u1ec7 th\u1ed1ng<\/h3>\n\n\n\n

C\u00e1c \u0111i\u1ec1u khi\u1ec3n hai tay \u0111\u00e3 hu\u1ea5n luy\u1ec7n m\u1ed9t th\u1ebf h\u1ec7 l\u00f9i l\u1ea1i kh\u1ecfi h\u00e0m th\u00e9p v\u00e0 gi\u1eef n\u00fat cho \u0111\u1ebfn khi c\u00f2n c\u00e1ch \u0111\u00e1y m\u1ed9t ph\u1ea7n t\u01b0 inch. \u0110\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p; \u0111\u00f3 l\u00e0 tr\u00ed nh\u1edb c\u01a1 b\u1eafp. Khi b\u1ea1n chuy\u1ec3n sang v\u1eadn h\u00e0nh b\u1eb1ng b\u00e0n \u0111\u1ea1p ch\u00e2n v\u1edbi AOPD \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n, b\u1ea1n \u0111ang y\u00eau c\u1ea7u ng\u01b0\u1eddi v\u1eadn h\u00e0nh gi\u1eef chi ti\u1ebft g\u1ea7n th\u00e9p \u0111ang di chuy\u1ec3n v\u00e0 tin v\u00e0o th\u1eddi gian d\u1eebng.<\/p>\n\n\n\n

Ni\u1ec1m tin kh\u00f4ng \u0111\u1ebfn t\u1eeb s\u00e1ch h\u01b0\u1edbng d\u1eabn. N\u00f3 \u0111\u1ebfn t\u1eeb vi\u1ec7c tr\u00ecnh di\u1ec5n.<\/p>\n\n\n\n

B\u1ea1n cho h\u1ecd th\u1ea5y kho\u1ea3ng c\u00e1ch d\u1eebng \u0111o \u0111\u01b0\u1ee3c. B\u1ea1n gi\u1ea3i th\u00edch \u0111i\u1ec1u \u0111\u00f3 14mm<\/strong><\/em> c\u00f3 ngh\u0129a g\u00ec trong kh\u00f4ng gian v\u1eadt l\u00fd\u2014\u00edt h\u01a1n \u0111\u1ed9 d\u00e0y ng\u00f3n \u00fat c\u1ee7a h\u1ecd. B\u1ea1n tr\u00ecnh di\u1ec5n c\u00e1c t\u00ecnh hu\u1ed1ng l\u1ed7i: ch\u1eb7n tia, xem m\u00e1y bu\u1ed9c ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 an to\u00e0n. M\u00f4 ph\u1ecfng l\u1ed7i van v\u00e0 cho th\u1ea5y kh\u00f3a an to\u00e0n. Gi\u1edd \u0111\u00e2y h\u1ec7 th\u1ed1ng kh\u00f4ng c\u00f2n l\u00e0 ph\u00e9p m\u00e0u; n\u00f3 tr\u1edf n\u00ean c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n.<\/p>\n\n\n\n

V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi b\u1ea1n t\u00ednh \u0111\u1ebfn nh\u1eefng do d\u1ef1 nh\u1ecf, nh\u1eefng l\u1ea7n nh\u1ea5n n\u00fat sai, t\u01b0 th\u1ebf kh\u00f3 ch\u1ecbu l\u00e0m ch\u1eadm vi\u1ec7c \u0111\u1ecbnh v\u1ecb. Khi ng\u01b0\u1eddi v\u1eadn h\u00e0nh nh\u1eadn ra h\u1ecd c\u00f3 th\u1ec3 gi\u1eef \u1ed5n \u0111\u1ecbnh c\u00e1c chi ti\u1ebft nh\u1ecf m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean, k\u00edch ho\u1ea1t b\u1eb1ng b\u00e0n \u0111\u1ea1p ch\u00e2n, v\u00e0 duy tr\u00ec t\u1ed1c \u0111\u1ed9 ti\u1ebfp c\u1eadn t\u1ed1i \u0111a v\u00ec th\u1eddi gian d\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn, n\u0103ng su\u1ea5t kh\u00f4ng c\u00f2n \u0111\u1ed1i \u0111\u1ea7u v\u1edbi an to\u00e0n.<\/p>\n\n\n\n

Nh\u01b0ng b\u1ea1n c\u0169ng \u0111\u00e0o t\u1ea1o v\u1ec1 gi\u1edbi h\u1ea1n. C\u00f4ng vi\u1ec7c n\u00e0o c\u1ea7n t\u1ed1c \u0111\u1ed9 an to\u00e0n. C\u00f4ng vi\u1ec7c n\u00e0o c\u1ea7n chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 r\u00e8m. C\u00f4ng vi\u1ec7c n\u00e0o c\u1ea7n quay l\u1ea1i \u0111i\u1ec1u khi\u1ec3n hai tay v\u00ec h\u00ecnh d\u1ea1ng \u0111\u00e1nh b\u1ea1i c\u1ea3m bi\u1ebfn kho\u1ea3ng c\u00e1ch. AOPD v\u01b0\u1ee3t tr\u1ed9i h\u01a1n \u0111i\u1ec1u khi\u1ec3n hai tay khi c\u1ea3 hai \u0111\u1ec1u kh\u1ea3 thi; n\u00f3 kh\u00f4ng x\u00f3a b\u1ecf ch\u00fang kh\u1ecfi b\u1ed9 c\u00f4ng c\u1ee5 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

H\u00e3y l\u00e0m r\u00f5 \u0111i\u1ec1u \u0111\u00f3, n\u1ebfu kh\u00f4ng ng\u01b0\u1eddi v\u1eadn h\u00e0nh s\u1ebd \u1ee9ng bi\u1ebfn.<\/p>\n\n\n\n

V\u00e0 \u1ee9ng bi\u1ebfn l\u00e0 \u0111i\u1ec1u m\u00e0 thanh tra g\u1ecdi l\u00e0 \u201cc\u1ed1 \u00fd\u201d.\u201d<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 g\u00f3c nh\u00ecn t\u00f4i mu\u1ed1n b\u1ea1n mang theo: tu\u00e2n th\u1ee7 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb. N\u00f3 l\u00e0 m\u1ed9t chu\u1ed7i v\u1eadt l\u00fd c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7, \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u00e0o \u0111\u1ed9 tin c\u1eady \u0111i\u1ec1u khi\u1ec3n, \u0111\u01b0\u1ee3c ghi ch\u00e9p tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t, v\u00e0 \u0111\u01b0\u1ee3c c\u1ee7ng c\u1ed1 cho \u0111\u1ebfn khi n\u00f3 t\u00e1i l\u1eadp tr\u00ed nh\u1edb c\u01a1 b\u1eafp.<\/p>\n\n\n\n

Khi b\u1ea1n x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng theo c\u00e1ch \u0111\u00f3, h\u00e0m th\u00e9p kh\u00f4ng ch\u1eadm l\u1ea1i. Ch\u00fang tr\u1edf n\u00ean c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n. V\u00e0 kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n l\u00e0 \u0111i\u1ec1u cho ph\u00e9p b\u1ea1n ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 kh\u00f4ng \u0111\u00e1nh c\u01b0\u1ee3c b\u1eb1ng ng\u00f3n tay hay ti\u1ec1n ph\u1ea1t.<\/p>\n\n\n\n

B\u00e2y gi\u1edd h\u00e3y nh\u00ecn v\u00e0o chi\u1ebfc phanh c\u0169 nh\u1ea5t c\u1ee7a b\u1ea1n v\u00e0 t\u1ef1 h\u1ecfi m\u1ed9t c\u00e2u kh\u00f3: n\u00f3 c\u00f3 th\u1ef1c s\u1ef1 d\u1eebng l\u1ea1i b\u00ean trong kh\u00f4ng 14mm<\/strong><\/em>\u2014l\u1ea1nh, t\u1ea3i \u0111\u1ea7y, v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh\u2014hay b\u1ea1n \u0111ang thi\u1ebft k\u1ebf m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c an to\u00e0n d\u1ef1a tr\u00ean m\u1ed9t m\u00e1y v\u1ed1n d\u0129 ch\u01b0a bao gi\u1edd \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n ngay t\u1eeb \u0111\u1ea7u?<\/p>","protected":false},"excerpt":{"rendered":"

M\u1ed9t m\u00e1y \u00e9p phanh d\u00e0i 10 foot, l\u1ef1c 120 t\u1ea5n, khu\u00f4n d\u01b0\u1edbi m\u1edf v\u1eeba \u0111\u1ee7 \u0111\u1ec3 nu\u1ed1t g\u1ecdn \u0111\u1ea7u ng\u00f3n tay. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u0103n ch\u1ec9nh t\u1ea5m kim lo\u1ea1i, r\u00fat tay ra, \u0111\u01b0a tay t\u1edbi c\u1eb7p n\u00fat b\u1ea5m hai l\u00f2ng b\u00e0n tay g\u1eafn tr\u00ean b\u1ec7 \u0111i\u1ec1u khi\u1ec3n. C\u00e1nh tay \u00e9p h\u1ea1 xu\u1ed1ng khi anh ta \u0111\u00e3 nghi\u00eang ng\u01b0\u1eddi v\u1ec1 ph\u00eda tr\u01b0\u1edbc \u0111\u1ec3 \u0111\u00f3n l\u1ea5y chi ti\u1ebft trong h\u00e0nh tr\u00ecnh \u0111i l\u00ean. Anh ta \u201ctu\u00e2n th\u1ee7.\u201d V\u1eady th\u00ec t\u1ea1i sao [\u2026]<\/p>","protected":false},"author":3,"featured_media":896,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-891","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/comments?post=891"}],"version-history":[{"count":2,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/891\/revisions"}],"predecessor-version":[{"id":1089,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/891\/revisions\/1089"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media\/896"}],"wp:attachment":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media?parent=891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/categories?post=891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/tags?post=891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}