{"id":2172,"date":"2025-03-02T18:29:45","date_gmt":"2025-03-02T10:29:45","guid":{"rendered":"https:\/\/led.amasly.com\/?p=2172"},"modified":"2025-03-06T22:56:48","modified_gmt":"2025-03-06T14:56:48","slug":"yeu-cau-lua-chon-va-bien-phap-phong-ngua-doi-voi-thiet-bi-dien-chong-chay-no-trong-moi-truong-bui-de-chay-no","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/vi\/thiet-bi-chong-chay-no\/yeu-cau-lua-chon-va-bien-phap-phong-ngua-doi-voi-thiet-bi-dien-chong-chay-no-trong-moi-truong-bui-de-chay-no\/","title":{"rendered":"M\u00f4i tr\u01b0\u1eddng b\u1ee5i d\u1ec5 ch\u00e1y n\u1ed5, y\u00eau c\u1ea7u l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba."},"content":{"rendered":"

M\u00f4i tr\u01b0\u1eddng b\u1ee5i d\u1ec5 ch\u00e1y n\u1ed5, y\u00eau c\u1ea7u l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba.<\/strong><\/strong><\/h1>\n\n\n\n

Y\u00eau c\u1ea7u l\u1ef1a ch\u1ecdn v\u00e0 bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 trong m\u00f4i tr\u01b0\u1eddng b\u1ee5i d\u1ec5 ch\u00e1y n\u1ed5<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

N\u1ed5 b\u1ee5i ch\u1ee7 y\u1ebfu \u0111\u1ec1 c\u1eadp \u0111\u1ebfn b\u1ee5i d\u1ec5 ch\u00e1y c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf h\u01a1n 75um, trong m\u1ed9t ph\u1ea1m vi nh\u1ea5t \u0111\u1ecbnh c\u1ee7a h\u1ed7n h\u1ee3p kh\u00f4ng kh\u00ed, \u0111\u1ea1t \u0111\u1ebfn n\u1ed3ng \u0111\u1ed9 gi\u1edbi h\u1ea1n n\u1ed5, v\u00e0 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1eeda m\u1edf, nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c t\u0129nh \u0111i\u1ec7n, g\u00e2y ra v\u1ee5 n\u1ed5. S\u1ee9c m\u1ea1nh c\u1ee7a ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc n\u00e0y l\u00e0 v\u00f4 c\u00f9ng l\u1edbn, c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng cho t\u00ednh m\u1ea1ng c\u1ee7a nh\u1eefng ng\u01b0\u1eddi xung quanh. \u0110\u1ec3 x\u1ea3y ra n\u1ed5 b\u1ee5i, c\u1ea7n c\u00f3 n\u0103m \u0111i\u1ec1u ki\u1ec7n sau: ngu\u1ed3n \u0111\u00e1nh l\u1eeda, b\u1ee5i d\u1ec5 ch\u00e1y, oxy, kh\u00f4ng gian h\u1ea1n ch\u1ebf v\u00e0 tr\u1ea1ng th\u00e1i treo l\u01a1 l\u1eedng. \u0110\u1ec3 ph\u00f2ng ng\u1eeba n\u1ed5 b\u1ee5i trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 nhi\u1ec1u b\u1ee5i d\u1ec5 ch\u00e1y, c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p sau: v\u1ec7 sinh b\u1ee5i \u0111\u00fang c\u00e1ch, lo\u1ea1i b\u1ecf t\u1ea5t c\u1ea3 ngu\u1ed3n \u0111\u00e1nh l\u1eeda (ng\u1ecdn l\u1eeda m\u1edf, nhi\u1ec7t \u0111\u1ed9 cao, t\u0129nh \u0111i\u1ec7n), gi\u1ea3i ph\u00f3ng \u00e1p su\u1ea5t n\u1ed5, \u1ee9c ch\u1ebf n\u1ed5 v\u00e0 c\u00e1ch ly n\u1ed5.<\/p>\n\n\n\n

1 C\u00e1c y\u1ebfu t\u1ed1 h\u00ecnh th\u00e0nh c\u1ee7a m\u1ed9t v\u1ee5 n\u1ed5 b\u1ee5i l\u00e0 g\u00ec?<\/strong><\/strong><\/h2>\n\n\n\n

 M\u1ed9t s\u1ed1 <\/strong>N\u1ed3ng \u0111\u1ed9 b\u1ee5i: n\u1ed3ng \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c h\u1ea1t b\u1ee5i l\u1edbn, d\u1ec5 lan truy\u1ec1n ng\u1ecdn l\u1eeda.<\/p>\n\n\n\n

N\u1ed3ng \u0111\u1ed9 oxy<\/strong>: <\/strong>Oxy l\u00e0 y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n cho qu\u00e1 tr\u00ecnh ch\u00e1y c\u1ee7a b\u1ee5i.<\/p>\n\n\n\n

Ngu\u1ed3n \u0111\u00e1nh l\u1eeda \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n<\/strong><\/p>\n\n\n\n

Ph\u1ea3i \u1edf d\u1ea1ng huy\u1ec1n ph\u00f9<\/strong>: <\/strong>T\u0103ng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac gi\u1eefa kh\u00ed v\u00e0 ch\u1ea5t r\u1eafn v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng.<\/p>\n\n\n\n

Trong m\u1ed9t kh\u00f4ng gian t\u01b0\u01a1ng \u0111\u1ed1i h\u1eb9p<\/strong>: <\/strong>Trong kh\u00f4ng gian h\u1eb9p, \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 t\u0103ng \u0111\u1ed9t ng\u1ed9t v\u00e0 sau \u0111\u00f3 g\u00e2y n\u1ed5.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

2 Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 b\u1ee5i<\/strong><\/strong><\/h2>\n\n\n\n

1.1 Y\u00eau c\u1ea7u v\u1ec1 v\u1ecf<\/strong><\/strong><\/h3>\n\n\n\n

C\u00f3 hai lo\u1ea1i ch\u00ednh c\u1ee7a v\u1ecf ch\u1ed1ng b\u1ee5i. Lo\u1ea1i \u0111\u1ea7u ti\u00ean l\u00e0 v\u1ecf ch\u1ed1ng b\u1ee5i c\u1ea5p 6, c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n ho\u00e0n to\u00e0n b\u1ee5i x\u00e2m nh\u1eadp. Lo\u1ea1i th\u1ee9 hai l\u00e0 v\u1ecf ch\u1ed1ng b\u1ee5i c\u1ea5p 5, m\u1eb7c d\u00f9 hi\u1ec7u su\u1ea5t ch\u1ed1ng b\u1ee5i c\u1ee7a n\u00f3 k\u00e9m h\u01a1n so v\u1edbi v\u1ecf ch\u1ed1ng b\u1ee5i c\u1ea5p 6, nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n h\u1ea7u h\u1ebft b\u1ee5i x\u00e2m nh\u1eadp, kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a thi\u1ebft b\u1ecb. V\u1ecf ch\u1ed1ng b\u1ee5i c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c ph\u00f2ng ng\u1eeba n\u1ed5 b\u1ee5i. Do \u0111\u00f3, trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u1ecf ch\u1ed1ng b\u1ee5i, c\u1ea7n kh\u1eafc d\u1ea5u v\u0129nh vi\u1ec5n Ex tr\u00ean b\u1ec1 m\u1eb7t, \u0111\u1ed3ng th\u1eddi c\u00e1c th\u00f4ng tin d\u1eef li\u1ec7u, c\u1ea3nh b\u00e1o, v.v. c\u1ee7a v\u1ecf ch\u1ed1ng b\u1ee5i ph\u1ea3i \u0111\u01b0\u1ee3c d\u00e1n nh\u00e3n \u0111\u1ec3 tr\u00e1nh v\u1ecf ch\u1ed1ng b\u1ee5i b\u1ecb h\u01b0 h\u1ecfng.<\/p>\n\n\n\n

1.2 L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/strong><\/strong><\/h3>\n\n\n\n

\u0110\u1ec3 ng\u0103n ch\u1eb7n v\u1ecf b\u1ee5i b\u1ecb n\u1ee9t v\u1ee1 ho\u00e0n to\u00e0n c\u0169ng nh\u01b0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ch\u1ed1ng b\u1ee5i c\u1ee7a v\u1ecf b\u1ee5i, trong qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho v\u1ecf b\u1ee5i, c\u1ea7n \u01b0u ti\u00ean c\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 b\u1ec1n cao nh\u01b0 gang, th\u00e9p v\u00e0 c\u00e1c lo\u1ea1i t\u01b0\u01a1ng t\u1ef1. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t khi th\u1ec3 t\u00edch c\u1ee7a v\u1ecf b\u1ee5i nh\u1ecf h\u01a1n 2L, l\u00fac n\u00e0y c\u00f3 th\u1ec3 ch\u1ecdn nh\u1ef1a \u0111\u1ec3 s\u1ea3n xu\u1ea5t v\u1ecf ch\u1ed1ng b\u1ee5i, nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ecdn nh\u1ef1a th\u00f4ng th\u01b0\u1eddng, m\u00e0 ph\u1ea3i ch\u1ecdn nh\u1ef1a c\u00f4ng nghi\u1ec7p ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y c\u1ee7a to\u00e0n b\u1ed9 nh\u1ef1a c\u00f4ng nghi\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 l\u1edbn, \u0111\u1ec3 tr\u00e1nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh thi c\u00f4ng b\u00ecnh th\u01b0\u1eddng. Khi l\u1ef1a ch\u1ecdn nh\u1ef1a c\u00f4ng nghi\u1ec7p, ch\u00fang ta ph\u1ea3i ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c ph\u00f2ng ng\u1eeba t\u0129nh \u0111i\u1ec7n, \u0111\u1ea3m b\u1ea3o \u0111i\u1ec7n tr\u1edf c\u1ee7a to\u00e0n b\u1ed9 nh\u1ef1a c\u00f4ng nghi\u1ec7p nh\u1ecf h\u01a1n 10%. \u0110i\u1ec7n tr\u1edf c\u1ee7a to\u00e0n b\u1ed9 nh\u1ef1a c\u00f4ng nghi\u1ec7p ph\u1ea3i nh\u1ecf h\u01a1n 10\u03a9, \u0111\u1ed3ng th\u1eddi trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t bulong, c\u1ea7n thi\u1ebft l\u1eadp c\u00e1c mi\u1ebfng \u0111\u1ec7m kim lo\u1ea1i ch\u00f4n ng\u1ea7m, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap tho\u00e1t \u0111i\u1ec7n t\u0129nh, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng n\u1ed5 b\u1ee5i do t\u0129nh \u0111i\u1ec7n g\u00e2y ra.<\/p>\n\n\n\n

1.3 Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t t\u1ed1i \u0111a cho ph\u00e9p c\u1ee7a v\u1ecf b\u1ecdc b\u1ee5i<\/strong><\/strong><\/h3>\n\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng v\u1ecf ch\u1ed1ng b\u1ee5i gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a b\u1ee5i, ng\u0103n ch\u1eb7n s\u1ef1 ch\u00e1y n\u1ed5 do tia l\u1eeda \u0111i\u1ec7n g\u00e2y ra b\u1edfi b\u1ee5i. Tuy nhi\u00ean, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ch\u00e1y n\u1ed5 b\u1ee5i, do \u0111\u00f3 ch\u00fang ta c\u1ea7n \u00e1p d\u1ee5ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 c\u1ee7a to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb \u0111i\u1ec7n, nh\u1eb1m ng\u0103n ch\u1eb7n ch\u00e1y n\u1ed5 b\u1ee5i do nhi\u1ec7t \u0111\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n g\u00e2y ra. Tr\u01b0\u1edbc khi gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n, tr\u01b0\u1edbc h\u1ebft c\u1ea7n hi\u1ec3u r\u00f5 v\u1ec1 b\u1ee5i trong kh\u00f4ng kh\u00ed, v\u00ec nhi\u1ec7t \u0111\u1ed9 b\u1eaft l\u1eeda c\u1ee7a c\u00e1c lo\u1ea1i b\u1ee5i kh\u00e1c nhau c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch l\u1edbn. C\u1ea7n gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n d\u1ef1a tr\u00ean nhi\u1ec7t \u0111\u1ed9 b\u1eaft l\u1eeda c\u1ee7a b\u1ee5i, kh\u00f4ng \u0111\u01b0\u1ee3c t\u00f9y ti\u1ec7n gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 c\u1ee7a to\u00e0n b\u1ed9 v\u1ecf thi\u1ebft b\u1ecb \u0111i\u1ec7n. Trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c, m\u00f4i tr\u01b0\u1eddng x\u00e2y d\u1ef1ng c\u1ea7n \u0111\u01b0\u1ee3c v\u1ec7 sinh b\u1ee5i th\u01b0\u1eddng xuy\u00ean, gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 b\u1ee5i trong to\u00e0n b\u1ed9 m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi th\u1ef1c hi\u1ec7n v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng t\u00edch t\u1ee5 b\u1ee5i.<\/p>\n\n\n\n

N\u1ebfu c\u1ea7n ph\u1ea3i m\u1edf thi\u1ebft b\u1ecb \u0111i\u1ec7n trong su\u1ed1t qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c, ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 b\u00ean trong thi\u1ebft b\u1ecb \u0111i\u1ec7n ph\u1ea3i th\u1ea5p h\u01a1n gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean b\u1ec1 m\u1eb7t, \u0111\u1ec3 ng\u0103n ng\u1eeba n\u1ed5 b\u1ee5i do vi\u1ec7c m\u1edf thi\u1ebft b\u1ecb g\u00e2y ra.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

3 Thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng n\u1ed5 b\u1ee5i: C\u00e1ch ch\u1ecdn lo\u1ea1i<\/strong><\/strong><\/h2>\n\n\n\n

Trong vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ch\u1ed1ng b\u1ee5i v\u00e0 ch\u1ed1ng ch\u00e1y n\u1ed5, tr\u01b0\u1edbc ti\u00ean c\u1ea7n hi\u1ec3u r\u00f5 to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb \u0111i\u1ec7n. Thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng b\u1ee5i trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u b\u1eb1ng logo ExtD, trong khi lo\u1ea1i t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ExtD kh\u00f4ng th\u1ec3 thay th\u1ebf cho thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 kh\u00ed ho\u1eb7c thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 b\u1ee5i. Hi\u1ec3u r\u00f5 c\u00e1c th\u00f4ng tin n\u00e0y v\u00e0 sau \u0111\u00f3 d\u1ef1a v\u00e0o m\u00f4i tr\u01b0\u1eddng x\u00e2y d\u1ef1ng c\u1ee5 th\u1ec3 c\u00f9ng v\u1edbi lo\u1ea1i b\u1ee5i \u0111\u1ec3 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111i\u1ec7n ph\u00f9 h\u1ee3p. V\u00ed d\u1ee5, trong tr\u01b0\u1eddng h\u1ee3p n\u1ed3ng \u0111\u1ed9 b\u1ee5i cao, ph\u1ea3i ch\u1ecdn v\u1ecf b\u1ea3o v\u1ec7 \u201cch\u1ed1ng b\u1ee5i ho\u00e0n to\u00e0n\u201d \u0111\u1ec3 ng\u0103n b\u1ee5i x\u00e2m nh\u1eadp v\u00e0o thi\u1ebft b\u1ecb \u0111i\u1ec7n g\u00e2y n\u1ed5. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p n\u1ed3ng \u0111\u1ed9 b\u1ee5i th\u1ea5p, kh\u00f4ng c\u00f3 \u0111\u00e1m m\u00e2y b\u1ee5i m\u00e0 ch\u1ec9 c\u00f3 l\u1edbp b\u1ee5i, c\u00f3 th\u1ec3 ch\u1ecdn v\u1ecf b\u1ea3o v\u1ec7 \u201cch\u1ed1ng b\u1ee5i\u201d \u0111\u1ec3 ng\u0103n hi\u1ec7n t\u01b0\u1ee3ng n\u1ed5 b\u1ee5i. C\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng n\u1ed5 b\u1ee5i bao g\u1ed3m: v\u1ecf b\u1ea3o v\u1ec7 ExtD, an to\u00e0n n\u1ed9i t\u1ea1i ExiD, v\u1ecf b\u1ea3o v\u1ec7 ch\u1ed1ng \u0111\u1ed5 ExmD, v\u1ecf b\u1ea3o v\u1ec7 \u00e1p su\u1ea5t d\u01b0\u01a1ng ExpD. Khi nh\u1eadn bi\u1ebft c\u00e1c d\u1ea5u hi\u1ec7u c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng n\u1ed5, c\u1ea7n l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i thi\u1ebft b\u1ecb ch\u1ed1ng n\u1ed5, v\u00ed d\u1ee5: ExtDA21IP65T135 \u2103, bi\u1ec3u t\u01b0\u1ee3ng ch\u1ed1ng n\u1ed5 Ex, lo\u1ea1i v\u1ecf b\u1ea3o v\u1ec7 tD, thi\u1ebft b\u1ecb lo\u1ea1i A21A (ch\u1ea5t d\u1ec5 ch\u00e1y) khu v\u1ef1c 21, m\u1ee9c b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb IP56, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t t\u1ed1i \u0111a c\u1ee7a thi\u1ebft b\u1ecb T135 \u2103.<\/p>\n\n\n\n

Sau khi x\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5, vi\u1ec7c l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n r\u1ea5t quan tr\u1ecdng. Vi\u1ec7c l\u1eafp \u0111\u1eb7t ph\u1ea3i tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng b\u1ee5i ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, \u0111\u1ea3m b\u1ea3o an to\u00e0n s\u1ea3n xu\u1ea5t, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng n\u1ed5 b\u1ee5i, v\u00e0 b\u1ea3o v\u1ec7 t\u00ednh m\u1ea1ng v\u00e0 s\u1ee9c kh\u1ecfe c\u1ee7a to\u00e0n b\u1ed9 nh\u00e2n vi\u00ean.<\/p>\n\n\n\n

4. Ph\u00f2ng ng\u1eeba n\u1ed5 b\u1ee5i v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt kh\u00e1c<\/strong><\/strong><\/h2>\n\n\n\n

4<\/strong>.1. C\u00e1c bi\u1ec7n ph\u00e1p ch\u1ed1ng ch\u00e1y n\u1ed5 ch\u00ednh \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn v\u00e0 b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/strong><\/strong><\/h3>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, tr\u01b0\u1edbc ti\u00ean c\u1ea7n th\u1ef1c hi\u1ec7n thi\u1ebft k\u1ebf h\u1ee3p l\u00fd cho quy tr\u00ecnh, nh\u1eb1m tr\u00e1nh b\u1ee5i ph\u00e1t sinh t\u1eeb quy tr\u00ecnh, sau \u0111\u00f3 l\u1ef1a ch\u1ecdn \u0111\u00fang thi\u1ebft b\u1ecb \u0111i\u1ec7n, v\u00e0 ti\u1ebfp theo l\u00e0 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda trong to\u00e0n b\u1ed9 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, \u0111\u1ec3 ng\u0103n ch\u1eb7n ng\u1ecdn l\u1eeda m\u1edf, \u0111\u1ea3m b\u1ea3o m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u01b0\u1ee3c n\u1ed1i \u0111\u1ea5t v\u00e0 c\u00e0i \u0111\u1eb7t h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng t\u1ef1 \u0111\u1ed9ng, v\u00e0 cu\u1ed1i c\u00f9ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 m\u00e1y m\u00f3c v\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n

4<\/strong>.2 Lo\u1ea1i b\u1ecf b\u1ee5i t\u00edch t\u1ee5 \u0111\u1ec3 ng\u0103n ng\u1eeba n\u1ed5.<\/strong><\/strong><\/h3>\n\n\n\n

T\u00edch t\u1ee5 b\u1ee5i l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n quan tr\u1ecdng d\u1eabn \u0111\u1ebfn n\u1ed5 b\u1ee5i, do \u0111\u00f3 c\u1ea7n \u0111\u1ea3m b\u1ea3o th\u1ef1c hi\u1ec7n t\u1ed1t c\u00f4ng t\u00e1c v\u1ec7 sinh to\u00e0n b\u1ed9 x\u01b0\u1edfng s\u1ea3n xu\u1ea5t, bao g\u1ed3m c\u1ea3 vi\u1ec7c l\u00e0m s\u1ea1ch kh\u00f4ng kh\u00ed v\u00e0 thi\u1ebft b\u1ecb c\u00f3 b\u1ee5i. V\u00ec b\u1ee5i c\u00f3 th\u1ec3 s\u1ea3n sinh kh\u00ed d\u1ec5 ch\u00e1y trong \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, n\u00ean vi\u1ec7c s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n c\u00e1c y\u1ebfu t\u1ed1 g\u00e2y n\u1ed5 b\u1ee5i. Trong qu\u00e1 tr\u00ecnh l\u00e0m s\u1ea1ch b\u1ee5i, h\u00e3y \u01b0u ti\u00ean s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p h\u00fat ch\u00e2n kh\u00f4ng \u0111\u1ec3 lo\u1ea1i b\u1ecf to\u00e0n b\u1ed9 b\u1ee5i, t\u1eeb \u0111\u00f3 th\u1ef1c hi\u1ec7n vi\u1ec7c l\u00e0m s\u1ea1ch to\u00e0n di\u1ec7n m\u00e0 kh\u00f4ng b\u1ecf s\u00f3t, nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c s\u1ea1ch s\u1ebd v\u00e0 an to\u00e0n. B\u1ee5i trong kh\u00f4ng kh\u00ed ng\u00e0y c\u00e0ng nhi\u1ec1u, qu\u00e1 tr\u00ecnh l\u1eafng \u0111\u1ecdng t\u1ef1 nhi\u00ean c\u1ee7a b\u1ee5i c\u0169ng l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y n\u1ed5, do \u0111\u00f3 ch\u00fang ta ph\u1ea3i lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ef1 t\u00edch t\u1ee5 b\u1ee5i.<\/p>\n\n\n\n

4<\/strong>.3 C\u00e1c bi\u1ec7n ph\u00e1p x\u1ea3 \u00e1p, \u1ee9c ch\u1ebf v\u00e0 c\u00e1ch ly trong tr\u01b0\u1eddng h\u1ee3p n\u1ed5<\/strong><\/strong><\/h3>\n\n\n\n

Lo\u1ea1i b\u1ecf c\u00e1c y\u1ebfu t\u1ed1 g\u00e2y n\u1ed5 b\u1ee5i l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n xu\u1ea5t an to\u00e0n. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u00e1c y\u1ebfu t\u1ed1 g\u00e2y n\u1ed5 b\u1ee5i \u0111\u00e3 h\u00ecnh th\u00e0nh kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf, l\u00fac n\u00e0y c\u1ea7n \u00e1p d\u1ee5ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m so\u00e1t ph\u1ea1m vi n\u1ed5 \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 b\u00f9ng ph\u00e1t n\u1ed5 tr\u00ean di\u1ec7n r\u1ed9ng, g\u00e2y ra thi\u1ec7t h\u1ea1i l\u1edbn h\u01a1n. \u0110\u1ec3 ki\u1ec3m so\u00e1t ph\u1ea1m vi n\u1ed5, c\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea7u ti\u00ean l\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u1ed5 gi\u1ea3m \u00e1p, ch\u1ee7 y\u1ebfu th\u00f4ng qua vi\u1ec7c l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb c\u01a1 kh\u00ed ho\u1eb7c c\u00f4ng tr\u00ecnh tr\u00ean c\u00e1c b\u00ecnh ch\u1eefa ch\u00e1y gi\u1ea3m \u00e1p d\u1ea1ng h\u1ed9p. B\u00ecnh ch\u1eefa ch\u00e1y n\u00e0y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra n\u1ed5 c\u1ee5c b\u1ed9, b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p n\u1ed5 v\u1edbi ng\u1ecdn l\u1eeda \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 \u1ee9c ch\u1ebf n\u1ed5, t\u1eeb \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau gi\u1ea3m \u00e1p v\u00e0 ki\u1ec3m so\u00e1t ph\u1ea1m vi c\u1ee7a v\u1ee5 n\u1ed5;<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1ee9 hai l\u00e0 \u1ee9c ch\u1ebf n\u1ed5, vi\u1ec7c \u1ee9c ch\u1ebf n\u1ed5 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u1ee9c ch\u1ebf n\u1ed5. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u1ee9c ch\u1ebf n\u1ed5 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n n\u1ed5 b\u1ee5i th\u00f4ng qua hai c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i, t\u1eeb \u0111\u00f3 k\u1ecbp th\u1eddi k\u00edch ho\u1ea1t c\u00e1c bi\u1ec7n ph\u00e1p b\u00e1o \u0111\u1ed9ng, \u0111\u1ed3ng th\u1eddi ng\u1eaft ngu\u1ed3n \u0111i\u1ec7n v\u00e0 k\u00edch ho\u1ea1t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7. To\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u1ee9c ch\u1ebf n\u1ed5 ch\u1ee7 y\u1ebfu th\u00f4ng qua vi\u1ec7c ki\u1ec3m so\u00e1t t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u1ed5 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 s\u1ea3n xu\u1ea5t an to\u00e0n;<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1ee9 ba l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ed1ng n\u1ed5, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u1eeda ch\u1ed1ng n\u1ed5 v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c \u0111\u1ec3 ki\u1ec3m so\u00e1t ph\u1ea1m vi c\u1ee7a v\u1ee5 n\u1ed5 b\u1ee5i v\u00e0 ng\u0103n ch\u1eb7n g\u00e2y ra thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng h\u01a1n.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u, \u1ee9c ch\u1ebf v\u00e0 c\u00e1ch ly n\u1ed5 b\u1ee5i c\u1ee7a ba ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 cho to\u00e0n b\u1ed9 ph\u1ea1m vi ki\u1ec3m so\u00e1t n\u1ed5 b\u1ee5i, nh\u1eb1m ng\u0103n ch\u1eb7n thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng h\u01a1n, \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh thi c\u00f4ng di\u1ec5n ra su\u00f4n s\u1ebb. Khi \u00e1p d\u1ee5ng ba ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, c\u1ea7n l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 h\u1ee3p l\u00fd \u0111\u1ec3 l\u1eafp \u0111\u1eb7t, tr\u00e1nh s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n

4<\/strong>.4 T\u0103ng c\u01b0\u1eddng c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd, l\u00e0m r\u00f5 c\u00e1c h\u1ec7 th\u1ed1ng, tu\u00e2n th\u1ee7 vi\u1ec7c tri\u1ec3n khai, ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng v\u00e0 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng nh\u00e2n vi\u00ean.<\/strong><\/strong><\/h3>\n\n\n\n

Trong c\u00f4ng t\u00e1c ph\u00f2ng ng\u1eeba n\u1ed5 b\u1ee5i, vi\u1ec7c th\u1ef1c hi\u1ec7n gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t an to\u00e0n lao \u0111\u1ed9ng l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110i\u1ec1u \u0111\u1ea7u ti\u00ean c\u1ea7n l\u00e0m l\u00e0 thi\u1ebft l\u1eadp m\u1ed9t h\u1ec7 th\u1ed1ng tr\u00e1ch nhi\u1ec7m r\u00f5 r\u00e0ng cho c\u00f4ng vi\u1ec7c c\u1ee7a t\u1eebng nh\u00e2n vi\u00ean, \u0111\u1ea3m b\u1ea3o b\u1ed1 tr\u00ed h\u1ee3p l\u00fd, x\u00e1c \u0111\u1ecbnh ng\u01b0\u1eddi ch\u1ecbu tr\u00e1ch nhi\u1ec7m th\u1ef1c hi\u1ec7n, th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra b\u1ed1 tr\u00ed, v.v. v\u00e0 b\u1ea3o tr\u00ec, thay th\u1ebf thi\u1ebft b\u1ecb k\u1ecbp th\u1eddi, v.v. Th\u1ee9 hai, c\u1ea7n thi\u1ebft l\u1eadp h\u1ec7 th\u1ed1ng khen th\u01b0\u1edfng v\u00e0 k\u1ef7 lu\u1eadt nghi\u00eam ng\u1eb7t: khen th\u01b0\u1edfng cho nh\u00e2n vi\u00ean l\u00e0m t\u1ed1t c\u00f4ng vi\u1ec7c, k\u1ef7 lu\u1eadt \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi c\u00f3 sai s\u00f3t trong c\u00f4ng vi\u1ec7c \u0111\u1ec3 n\u00e2ng cao an to\u00e0n lao \u0111\u1ed9ng to\u00e0n di\u1ec7n, v\u00e0 cu\u1ed1i c\u00f9ng, t\u1ed5 ch\u1ee9c \u0111\u00e0o t\u1ea1o v\u00e0 \u0111\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n cho t\u1ea5t c\u1ea3 nh\u00e2n vi\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi nh\u00e2n vi\u00ean c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n s\u1ea3n xu\u1ea5t an to\u00e0n, ng\u0103n ch\u1eb7n c\u00e1c tai n\u1ea1n nghi\u00eam tr\u1ecdng do l\u1ed7i c\u1ee7a nh\u00e2n vi\u00ean v\u00e0 n\u1ed5, \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c \u0111\u1ecbnh k\u1ef3, nh\u01b0 c\u00e1c bu\u1ed5i gi\u1ea3ng d\u1ea1y, h\u1ecdc t\u1eadp, v.v., \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed7i nh\u00e2n vi\u00ean c\u00f3 \u0111\u1ee7 k\u00eanh \u0111\u1ec3 h\u1ecdc t\u1eadp v\u00e0 n\u00e2ng cao k\u1ef9 n\u0103ng l\u00e0m vi\u1ec7c.<\/p>","protected":false},"excerpt":{"rendered":"

Explosive dust environment, explosion-proof electrical equipment selection requirements and preventive measures Explosive dust environment explosion-proof electrical equipment selection requirements and preventive measures Dust explosion is mainly refers to the particle size less than 75um combustible dust, in a certain range of air suspension, reached the explosive limit concentration, in the open fire, high heat, static 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certain range of air suspension, reached the explosive limit concentration, in the open fire, high heat, 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