{"id":2154,"date":"2025-03-02T16:36:56","date_gmt":"2025-03-02T08:36:56","guid":{"rendered":"https:\/\/led.amasly.com\/?p=2154"},"modified":"2025-03-06T23:04:38","modified_gmt":"2025-03-06T15:04:38","slug":"coal-mine-explosion-proof-inspection-standards","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/vi\/explosion-proof-equipment\/coal-mine-explosion-proof-inspection-standards\/","title":{"rendered":"Ti\u00eau chu\u1ea9n ki\u1ec3m tra ch\u1ed1ng n\u1ed5 cho m\u1ecf than"},"content":{"rendered":"

Ti\u00eau chu\u1ea9n ki\u1ec3m tra ch\u1ed1ng ch\u00e1y n\u1ed5 cho m\u1ecf than<\/strong><\/strong><\/h1>\n\n\n\n

I. Quy \u0111\u1ecbnh chung:<\/strong><\/strong><\/h2>\n\n\n\n

    1. \u0110\u1ec3 ti\u1ebfp t\u1ee5c tri\u1ec3n khai \u201cQuy \u0111\u1ecbnh an to\u00e0n m\u1ecf than\u201d v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n, quy \u0111\u1ecbnh v\u1ec1 thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5, nh\u1eb1m n\u00e2ng cao nh\u1eadn th\u1ee9c c\u1ee7a c\u00f4ng nh\u00e2n c\u01a1 \u0111i\u1ec7n v\u1ec1 hi\u1ec7u su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5, v\u00e0 \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n trong c\u00f4ng t\u00e1c th\u1ef1c t\u1ebf, nh\u1eb1m t\u0103ng c\u01b0\u1eddng qu\u1ea3n l\u00fd khoa h\u1ecdc \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 trong m\u1ecf than ng\u1ea7m, n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng b\u1ea3o d\u01b0\u1ee1ng, lo\u1ea1i b\u1ecf s\u1ef1 c\u1ed1 \u0111i\u1ec7n, v\u00e0 \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh an to\u00e0n c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n, \u201cQuy \u0111\u1ecbnh\u201d n\u00e0y \u0111\u01b0\u1ee3c ban h\u00e0nh.<\/p>\n\n\n\n

    2. T\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb \u0111i\u1ec7n ng\u1ea7m (bao g\u1ed3m c\u1ea3 thi\u1ebft b\u1ecb \u0111i\u1ec7n nh\u1ecf) ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u0110i\u1ec1u 444 v\u00e0 \u0110i\u1ec1u 7 c\u1ee7a Quy \u0111\u1ecbnh An to\u00e0n M\u1ecf Than.<\/p>\n\n\n\n

    3. C\u00e1c thanh tra ch\u1ed1ng ch\u00e1y n\u1ed5 l\u00e0m vi\u1ec7c to\u00e0n th\u1eddi gian ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o v\u00e0 ki\u1ec3m tra b\u1edfi c\u00e1c c\u01a1 quan c\u00f3 th\u1ea9m quy\u1ec1n c\u1ea5p cao v\u00e0 ph\u1ea3i c\u00f3 ch\u1ee9ng ch\u1ec9 n\u0103ng l\u1ef1c. C\u00e1c thanh tra ch\u1ed1ng ch\u00e1y n\u1ed5 l\u00e0m vi\u1ec7c b\u00e1n th\u1eddi gian ph\u1ea3i tham gia \u0111\u00e0o t\u1ea1o v\u00e0 ki\u1ec3m tra c\u1ea5p m\u1ecf v\u00e0 ph\u1ea3i c\u00f3 ch\u1ee9ng ch\u1ec9 n\u0103ng l\u1ef1c.<\/p>\n\n\n\n

    4. Thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1edfi c\u00e1c ki\u1ec3m tra vi\u00ean ch\u1ed1ng ch\u00e1y n\u1ed5 chuy\u00ean tr\u00e1ch tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o gi\u1ebfng \u0111\u1ec3 c\u1ea5p \u201cch\u1ee9ng nh\u1eadn s\u1ea3n ph\u1ea9m\u201d, \u201cch\u1ee9ng nh\u1eadn ch\u1ed1ng ch\u00e1y n\u1ed5\u201d, \u201cnh\u00e3n an to\u00e0n s\u1ea3n ph\u1ea9m m\u1ecf than\u201d v\u00e0 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t an to\u00e0n; ch\u1ec9 sau khi qua ki\u1ec3m tra v\u00e0 c\u1ea5p gi\u1ea5y ch\u1ee9ng nh\u1eadn ph\u00f9 h\u1ee3p m\u1edbi \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u01b0a v\u00e0o gi\u1ebfng. Sau khi qua ki\u1ec3m tra v\u00e0 c\u1ea5p gi\u1ea5y ch\u1ee9ng nh\u1eadn ph\u00f9 h\u1ee3p, thi\u1ebft b\u1ecb s\u1ebd \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u01b0a v\u00e0o gi\u1ebfng. S\u1ea3n ph\u1ea9m \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 d\u00f9ng cho v\u1eadn h\u00e0nh th\u1eed nghi\u1ec7m c\u00f4ng nghi\u1ec7p ph\u1ea3i c\u00f3 \u201cgi\u1ea5y ph\u00e9p th\u1eed nghi\u1ec7m c\u00f4ng nghi\u1ec7p\u201d do c\u01a1 quan gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u1ea5p, v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p an to\u00e0n do \u0111\u01a1n v\u1ecb s\u1eed d\u1ee5ng \u0111\u1ec1 xu\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00f3 t\u1ed5ng gi\u00e1m \u0111\u1ed1c c\u01a1 \u0111i\u1ec7n m\u1ecf xem x\u00e9t v\u00e0 \u0111\u1ed3ng \u00fd, n\u1ebfu kh\u00f4ng s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u01b0a xu\u1ed1ng gi\u1ebfng.<\/p>\n\n\n\n

    5. Thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 trong gi\u1ebfng khoan \u0111\u1ec3 thay \u0111\u1ed5i gi\u00e1 tr\u1ecb \u0111\u1ecbnh m\u1ee9c s\u1eed d\u1ee5ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i k\u1ef9 thu\u1eadt ph\u1ea3i \u0111\u01b0\u1ee3c c\u01a1 quan qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m khai th\u00e1c m\u1ecf c\u1ee7a nh\u00e0 n\u01b0\u1edbc c\u1ea5p ph\u00e9p.<\/p>\n\n\n\n

    6. Vi\u1ec7c v\u1eadn h\u00e0nh, b\u1ea3o d\u01b0\u1ee1ng v\u00e0 s\u1eeda ch\u1eefa thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 ng\u1ea7m ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5. Thi\u1ebft b\u1ecb \u0111i\u1ec7n b\u1ecb h\u01b0 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5 ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd ngay l\u1eadp t\u1ee9c ho\u1eb7c thay th\u1ebf, tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

    7. Vi\u1ec7c b\u1ea3o d\u01b0\u1ee1ng v\u1ecf ch\u1ed1ng ch\u00e1y n\u1ed5 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo quy \u0111\u1ecbnh t\u1ea1i \u201cQuy ch\u1ebf s\u1eeda ch\u1eefa v\u1ecf thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 trong m\u1ecf than\u201d, v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi \u0111\u01a1n v\u1ecb ho\u1eb7c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p ch\u1ee9ng ch\u1ec9 ki\u1ec3m tra ch\u1ed1ng ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

    8. T\u0103ng c\u01b0\u1eddng ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t:<\/p>\n\n\n\n

    (1) Nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec (ki\u1ec3m tra vi\u00ean ch\u1ed1ng ch\u00e1y n\u1ed5 b\u00e1n th\u1eddi gian) c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 thu\u1ed9c ph\u1ea1m vi qu\u1ea3n l\u00fd c\u1ee7a m\u00ecnh ph\u1ea3i ti\u1ebfn h\u00e0nh ki\u1ec3m tra c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n m\u1ed7i ca l\u00e0m vi\u1ec7c.<\/p>\n\n\n\n

    (2) M\u1ed9t ki\u1ec3m tra vi\u00ean ch\u1ed1ng ch\u00e1y n\u1ed5 l\u00e0m vi\u1ec7c to\u00e0n th\u1eddi gian ph\u1ea3i ki\u1ec3m tra h\u1ec7 th\u1ed1ng \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a m\u1ecf c\u00f3 n\u1ed3ng \u0111\u1ed9 kh\u00ed cao ho\u1eb7c khu v\u1ef1c c\u00f3 n\u1ed3ng \u0111\u1ed9 kh\u00ed cao trong m\u1ecf c\u00f3 n\u1ed3ng \u0111\u1ed9 kh\u00ed th\u1ea5p \u00edt nh\u1ea5t hai l\u1ea7n m\u1ed9t tu\u1ea7n. H\u1ec7 th\u1ed1ng \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a m\u1ecf c\u00f3 n\u1ed3ng \u0111\u1ed9 kh\u00ed th\u1ea5p \u0111\u01b0\u1ee3c ki\u1ec3m tra m\u1ed9t l\u1ea7n m\u1ed9t tu\u1ea7n.<\/p>\n\n\n\n

    (3) S\u1ed1 l\u01b0\u1ee3ng nh\u00e2n vi\u00ean ki\u1ec3m tra ch\u1ed1ng ch\u00e1y n\u1ed5 l\u00e0m vi\u1ec7c to\u00e0n th\u1eddi gian v\u00e0 b\u00e1n th\u1eddi gian ph\u1ea3i \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00f4ng t\u00e1c ki\u1ec3m tra ch\u1ed1ng ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

  II. Quy \u0111\u1ecbnh chung:<\/strong><\/strong><\/p>\n\n\n\n

    1. Thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 (bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n nh\u1ecf), m\u1ee9c \u0111i\u1ec7n \u00e1p c\u1ee7a c\u00e1p kh\u00f4ng \u0111\u01b0\u1ee3c cao h\u01a1n m\u1ee9c \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh c\u1ee7a n\u00f3, n\u1ebfu kh\u00f4ng s\u1ebd \u0111\u01b0\u1ee3c coi l\u00e0 h\u1ecfng h\u00f3c.<\/p>\n\n\n\n

    2. N\u1ebfu \u0111\u1ea7u n\u1ed1i 9# c\u1ee7a c\u00f4ng t\u1eafc t\u1eeb ch\u1ed1ng ch\u00e1y n\u1ed5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ecf than v\u00e0 kh\u00ed \u0111\u1ed1t c\u00f3 n\u1ed3ng \u0111\u1ed9 kh\u00ed cao b\u1ecb ti\u1ebfp \u0111\u1ea5t ho\u1eb7c v\u1ecf ch\u1ed1ng ch\u00e1y n\u1ed5 b\u1ecb nhi\u1ec5m \u0111i\u1ec7n v\u00ec l\u00fd do n\u00e0o \u0111\u00f3, \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

    3. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng t\u1eafc \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n c\u00e1c \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n v\u00e0o v\u00e0 ra c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb v\u00e0o v\u00e0 ra \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ea5t m\u00e1t ch\u1ea5t n\u1ed5 (tr\u1eeb tr\u01b0\u1eddng h\u1ee3p truy c\u1eadp v\u00e0o r\u01a1le ph\u00e1t hi\u1ec7n r\u00f2 r\u1ec9 v\u00e0 ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n c\u1ee7a m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n).<\/p>\n\n\n\n

4. T\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd theo c\u00e1c y\u00eau c\u1ea7u ch\u1ed1ng ch\u00e1y n\u1ed5, b\u1ea5t k\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u00e2u d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t. <\/strong><\/strong><\/p>\n\n\n\n

III<\/strong>, V\u1ecf ch\u1ed1ng n\u1ed5 ph\u1ea3i c\u00f3 c\u00e1c d\u1ea5u hi\u1ec7u ch\u1ed1ng n\u1ed5 r\u00f5 r\u00e0ng v\u00e0 c\u00e1c d\u1ea5u hi\u1ec7u an to\u00e0n than. M\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau \u0111\u00e2y d\u1eabn \u0111\u1ebfn m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ed5:<\/strong><\/strong><\/p>\n\n\n\n

    1. V\u1ecf c\u00f3 v\u1ebft n\u1ee9t, m\u1ed1i h\u00e0n h\u1edf, bi\u1ebfn d\u1ea1ng nghi\u00eam tr\u1ecdng (chi\u1ec1u d\u00e0i bi\u1ebfn d\u1ea1ng v\u01b0\u1ee3t qu\u00e1 50mm v\u00e0 \u0111\u1ed9 s\u00e2u c\u1ee7a ph\u1ea7n l\u1ed3i v\u00e0 l\u00f5m v\u01b0\u1ee3t qu\u00e1 5mm).<\/p>\n\n\n\n

    2. V\u1ecf ch\u1ed1ng ch\u00e1y n\u1ed5 b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i c\u00f3 l\u1edbp g\u1ec9 bong tr\u00f3c (\u0111\u1ed9 d\u00e0y l\u1edbp g\u1ec9 t\u1eeb 0,2 mm tr\u1edf l\u00ean).<\/p>\n\n\n\n

    3. T\u1ea5m k\u00ednh trong su\u1ed1t c\u1ee7a l\u1ed7 quan s\u00e1t (c\u1eeda s\u1ed5) trong bu\u1ed3ng ch\u1ed1ng n\u1ed5 (khoang) b\u1ecb l\u1ecfng, v\u1ee1 ho\u1eb7c s\u1eed d\u1ee5ng k\u00ednh th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n

    4. Thi\u1ebft b\u1ecb ch\u1ed1ng ch\u00e1y n\u1ed5: L\u1ed7 ch\u1ed1ng ch\u00e1y n\u1ed5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i qua tr\u1ef1c ti\u1ebfp, th\u00e1o h\u1ed9p n\u1ed1i c\u1ee7a thi\u1ebft b\u1ecb ch\u1ed1ng ch\u00e1y n\u1ed5 kh\u1ecfi gh\u1ebf c\u00e1ch \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

5. Thi\u1ebft b\u1ecb kh\u00f3a kh\u00f4ng ho\u00e0n ch\u1ec9nh, h\u01b0 h\u1ecfng do bi\u1ebfn d\u1ea1ng kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng kh\u00f3a.<\/p>\n\n\n\n

IV<\/strong>, B\u1ec1 m\u1eb7t ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ea7n \u0111\u01b0\u1ee3c gi\u1eef s\u1ea1ch s\u1ebd, nguy\u00ean v\u1eb9n v\u00e0 ph\u1ea3i c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ed1ng g\u1ec9 s\u00e9t.<\/strong><\/strong><\/h2>\n\n\n\n

    1. C\u00e1c th\u00f4ng s\u1ed1 c\u1ea5u tr\u00fac c\u1ee7a b\u1ec1 m\u1eb7t m\u1ed1i n\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh sau \u0111\u00e2y; n\u1ebfu kh\u00f4ng, s\u1ebd \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5:<\/p>\n\n\n\n

    (1) Ph\u1ea7n c\u1ed1 \u0111\u1ecbnh c\u1ee7a b\u1ec1 m\u1eb7t n\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n, c\u1ea7n \u0111i\u1ec1u khi\u1ec3n, tr\u1ee5c v\u00e0 b\u1ec1 m\u1eb7t n\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a tr\u1ee5c \u1ed5 tr\u1ee5c, c\u00f9ng v\u1edbi th\u1ec3 t\u00edch v\u1ecf t\u01b0\u01a1ng \u1ee9ng v\u1edbi kho\u1ea3ng h\u1edf t\u1ed1i \u0111a, ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh c\u1ee7a B\u1ea3ng I. Chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng t\u1ed1i thi\u1ec3u c\u1ee7a lo\u1ea1i c\u1eeda \u0111\u00f3ng nhanh kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 25mm. B\u1ec1 m\u1eb7t n\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a lo\u1ea1i c\u1eeda \u0111\u00f3ng nhanh c\u00f3 chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng t\u1ed1i thi\u1ec3u kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 25mm.<\/p>\n\n\n\n

    (2) \u0110\u1ed9 nh\u00e1m trung b\u00ecnh c\u1ee7a b\u1ec1 m\u1eb7t m\u1ed1i n\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 6,3 \u03bcm.<\/p>\n\n\n\n

    (3) Kh\u00f4ng c\u00f3 g\u1ec9 s\u00e9t tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a l\u1edbp c\u00e1ch ly n\u1ed5 (khi lau b\u1eb1ng b\u00f4ng g\u1ea1c, v\u1eabn c\u00f2n c\u00e1c v\u1ebft g\u1ec9 s\u00e9t, trong khi ch\u1ec9 \u0111\u1ec3 l\u1ea1i b\u00f3ng m\u1edd, kh\u00f4ng \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 g\u1ec9 s\u00e9t).<\/p>\n\n\n\n

    (4) B\u1ec1 m\u1eb7t c\u00e1ch ly n\u1ed5 \u0111\u01b0\u1ee3c b\u1eaft v\u00edt v\u00e0 c\u1ed1 \u0111\u1ecbnh:<\/p>\n\n\n\n

    \u2460 Bu l\u00f4ng v\u00e0 \u0111\u1ec7m l\u00f2 xo ph\u1ea3i \u0111\u1ea7y \u0111\u1ee7 v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t (\u0111\u1ed9 ch\u1eb7t \u0111\u1ee7 \u0111\u1ec3 l\u00e0m ph\u1eb3ng \u0111\u1ec7m l\u00f2 xo l\u00e0 \u0111\u1ea1t y\u00eau c\u1ea7u).<\/p>\n\n\n\n

    \u2461 Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a \u0111\u1ec7m l\u00f2 xo ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi bulong. (Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, \u0111\u1ec7m l\u00f2 xo c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng ho\u1eb7c m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i, c\u1ea7n ki\u1ec3m tra kho\u1ea3ng c\u00e1ch ch\u1ed1ng ch\u00e1y n\u1ed5. N\u1ebfu kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n, vi\u1ec7c thay th\u1ebf \u0111\u1ec7m l\u00f2 xo \u0111\u1ea1t ti\u00eau chu\u1ea9n s\u1ebd kh\u00f4ng g\u00e2y m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5.).<\/p>\n\n\n\n

    \u2462 C\u00e1c bu l\u00f4ng ho\u1eb7c l\u1ed7 v\u00edt kh\u00f4ng \u0111\u01b0\u1ee3c tr\u01b0\u1ee3t ra kh\u1ecfi ch\u1ed1t (tr\u1eeb tr\u01b0\u1eddng h\u1ee3p thay th\u1ebf bu l\u00f4ng d\u00e0i c\u00f3 c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 si\u1ebft ch\u1eb7t b\u1eb1ng \u0111ai \u1ed1c).<\/p>\n\n\n\n

    (iv) \u0110\u1ed1i v\u1edbi bu l\u00f4ng v\u00e0 l\u1ed7 v\u00edt kh\u00f4ng th\u1ea5m n\u01b0\u1edbc, chi\u1ec1u d\u00e0i tr\u1ee5c c\u1ee7a c\u00e1c ren c\u00f2n l\u1ea1i tr\u00ean bu l\u00f4ng v\u00e0 l\u1ed7 v\u00edt sau khi si\u1ebft ch\u1eb7t ph\u1ea3i l\u1edbn h\u01a1n 1,5 l\u1ea7n \u0111\u1ed9 d\u00e0y c\u1ee7a \u0111\u1ec7m l\u00f2 xo; \u0111\u1ed9 d\u00e0y xung quanh v\u00e0 \u1edf \u0111\u00e1y l\u1ed7 v\u00edt ph\u1ea3i l\u1edbn h\u01a1n 3mm.<\/p>\n\n\n\n

    \u2464 C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c trong c\u00f9ng m\u1ed9t b\u1ed9 ph\u1eadn ph\u1ea3i gi\u1ed1ng nhau, v\u00e0 \u0111\u1ed9 s\u00e2u c\u1ee7a bu l\u00f4ng th\u00e9p \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o \u0111ai \u1ed1c kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a bu l\u00f4ng.<\/p>\n\n\n\n

    (vi) Chi\u1ec1u d\u00e0i c\u1ee7a bulong c\u1ed1 \u0111\u1ecbnh b\u1eb1ng th\u00e9p c\u00f3 l\u1ed7 ch\u00ecm v\u00e0o l\u1ed7 v\u00edt ph\u1ea3i l\u1edbn h\u01a1n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a bulong; \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn b\u1eb1ng gang, \u0111\u1ed3ng, nh\u00f4m, chi\u1ec1u d\u00e0i n\u00e0y ph\u1ea3i l\u1edbn h\u01a1n \u00edt nh\u1ea5t 1,5 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a bulong. N\u1ebfu \u0111\u1ed9 s\u00e2u c\u1ee7a l\u1ed7 v\u00edt kh\u00f4ng \u0111\u1ee7, ph\u1ea3i khoan l\u1ed7 \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n

    (vii) N\u1eafp h\u1ed9p n\u1ed1i \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u01b0\u1ee3c l\u1eafp ng\u01b0\u1ee3c.<\/p>\n\n\n\n

    2. Tr\u00ean b\u1ec1 m\u1eb7t c\u00e1ch ly n\u1ed5, c\u00e1c khuy\u1ebft t\u1eadt trong ph\u1ea1m vi chi\u1ec1u d\u00e0i quy \u0111\u1ecbnh v\u00e0 chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng ng\u1eafn nh\u1ea5t t\u1eeb m\u00e9p l\u1ed7 v\u00edt \u0111\u1ebfn m\u00e9p b\u1ec1 m\u1eb7t c\u00e1ch ly n\u1ed5 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 c\u00e1c quy \u0111\u1ecbnh sau:<\/p>\n\n\n\n

    (1) \u0110\u1ed1i v\u1edbi c\u00e1c l\u1ed7 c\u00e1t c\u00f3 \u0111\u01b0\u1eddng k\u00ednh kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 1mm v\u00e0 \u0111\u1ed9 s\u00e2u kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 2mm, tr\u00ean b\u1ec1 m\u1eb7t ch\u1ed1ng ch\u00e1y n\u1ed5 c\u00f3 k\u00edch th\u01b0\u1edbc 40, 25, 15mm, kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 2 l\u1ed7 tr\u00ean m\u1ed7i centimet vu\u00f4ng.<\/p>\n\n\n\n

    (2) V\u1ebft th\u01b0\u01a1ng c\u01a1 h\u1ecdc do tai n\u1ea1n g\u00e2y ra, chi\u1ec1u r\u1ed9ng v\u00e0 chi\u1ec1u s\u00e2u c\u1ee7a v\u1ebft th\u01b0\u01a1ng kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 0,5 mm, chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng c\u1ee7a b\u1ec1 m\u1eb7t n\u1ed5 kh\u00f4ng b\u1ecb t\u1ed5n th\u01b0\u01a1ng c\u00f2n l\u1ea1i kh\u00f4ng nh\u1ecf h\u01a1n 2\/3 chi\u1ec1u d\u00e0i quy \u0111\u1ecbnh.<\/p>\n\n\n\n

    (3) B\u1ec1 m\u1eb7t ch\u1ed1ng ch\u00e1y n\u1ed5 kh\u00f4ng \u0111\u01b0\u1ee3c s\u01a1n (khi ki\u1ec3m tra khe h\u1edf, kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 quy \u0111\u1ecbnh v\u1ec1 chi\u1ec1u d\u00e0i khe h\u1edf. Chi\u1ec1u d\u00e0i khe h\u1edf kh\u00f4ng \u0111\u01b0\u1ee3c s\u01a1n ph\u1ea3i kh\u00f4ng nh\u1ecf h\u01a1n 2\/3 chi\u1ec1u d\u00e0i quy \u0111\u1ecbnh, kh\u00f4ng g\u00e2y m\u1ea5t an to\u00e0n ch\u00e1y n\u1ed5).<\/p>\n\n\n\n

    3. \u0110\u1ed9ng c\u01a1 ch\u1ed1ng ch\u00e1y n\u1ed5<\/p>\n\n\n\n

    (1) B\u1ec1 m\u1eb7t kh\u1edbp ch\u1ed1ng ch\u00e1y n\u1ed5 c\u1ee7a tr\u1ee5c \u0111\u1ed9ng c\u01a1 v\u00e0 l\u1ed7 tr\u1ee5c kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ea1o ra ma s\u00e1t trong \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c b\u00ecnh th\u01b0\u1eddng. Khi s\u1eed d\u1ee5ng b\u1ec1 m\u1eb7t kh\u1edbp ch\u1ed1ng ch\u00e1y n\u1ed5 h\u00ecnh tr\u1ee5, kho\u1ea3ng h\u1edf t\u1ed1i thi\u1ec3u m\u1ed9t ph\u00eda gi\u1eefa tr\u1ee5c v\u00e0 l\u1ed7 tr\u1ee5c ph\u1ea3i kh\u00f4ng nh\u1ecf h\u01a1n 0,075 mm.<\/p>\n\n\n\n

    (2) C\u1ea5u tr\u00fac \u1ed5 tr\u1ee5c l\u0103n, kho\u1ea3ng h\u1edf m\u1ed9t ph\u00eda t\u1ed1i \u0111a gi\u1eefa tr\u1ee5c v\u00e0 l\u1ed7 tr\u1ee5c kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 2\/3 gi\u00e1 tr\u1ecb quy \u0111\u1ecbnh trong B\u1ea3ng I. v. Thi\u1ebft b\u1ecb d\u1eabn c\u00e1p:<\/strong><\/strong><\/p>\n\n\n\n

    Thi\u1ebft b\u1ecb \u0111\u01b0a c\u00e1p ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u1ea7y \u0111\u1ee7, ch\u1eafc ch\u1eafn, k\u00edn \u0111\u00e1o v\u00e0 \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn t\u1ed1t. M\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau \u0111\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u:<\/p>\n\n\n\n

    1. \u0110\u01b0\u1eddng k\u00ednh trong c\u1ee7a ph\u1edbt l\u1edbn h\u01a1n \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a c\u00e1p h\u01a1n 1mm.<\/p>\n\n\n\n

    2. S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa \u0111\u01b0\u1eddng k\u00ednh trong c\u1ee7a v\u00f2i h\u00fat v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a v\u00f2ng \u0111\u1ec7m v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong B\u1ea3ng II.<\/p>\n\n\n\n

    3. Chi\u1ec1u r\u1ed9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m k\u00edn nh\u1ecf h\u01a1n 0,7 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a c\u00e1p, ho\u1eb7c chi\u1ec1u r\u1ed9ng t\u1ed1i thi\u1ec3u nh\u1ecf h\u01a1n 10 mm.<\/p>\n\n\n\n

    4. \u0110\u1ed9 d\u00e0y c\u1ee7a v\u00f2ng \u0111\u1ec7m k\u00edn nh\u1ecf h\u01a1n 0,3 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a c\u00e1p (tr\u1eeb c\u00e1c c\u00e1p c\u00f3 di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang 70 mm\u00b2 tr\u1edf l\u00ean), ho\u1eb7c \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u nh\u1ecf h\u01a1n 4 mm.<\/p>\n\n\n\n

    5. C\u00e1c ph\u1edbt c\u00f3 nhi\u1ec1u d\u00e2y c\u00e1p \u0111\u01b0\u1ee3c lu\u1ed3n qua m\u1ed9t l\u1ed7 duy nh\u1ea5t.<\/p>\n\n\n\n

    6. C\u1eaft v\u00f2ng \u0111\u1ec7m k\u00edn tr\u00ean d\u00e2y c\u00e1p.<\/p>\n\n\n\n

    7. \u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u \u0111\u1ed9 c\u1ee9ng theo thang \u0111o Sauer t\u1eeb 45 \u0111\u1ebfn 55 \u0111\u1ed9. Qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a (n\u1ee9t, d\u00ednh, c\u1ee9ng, m\u1ec1m, v\u1ee1 v\u1ee5n, bi\u1ebfn m\u00e0u v\u00e0 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng kh\u00e1c) d\u1eabn \u0111\u1ebfn m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i, bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, k\u00edch th\u01b0\u1edbc hi\u1ec7u d\u1ee5ng c\u1ee7a khe h\u1edf l\u1eafp gh\u00e9p kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a ch\u1ee9c n\u0103ng l\u00e0m k\u00edn.<\/p>\n\n\n\n

    8. V\u00f2ng \u0111\u1ec7m kh\u00f4ng \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ho\u00e0n to\u00e0n tr\u00ean v\u1ecf c\u00e1p (ho\u1eb7c v\u1ecf b\u1ecdc c\u00e1p b\u1ecdc th\u00e9p).<\/p>\n\n\n\n

    9. C\u00f3 c\u00e1c l\u1edbp b\u1ecdc kh\u00e1c n\u1eb1m gi\u1eefa v\u00f2ng \u0111\u1ec7m v\u00e0 v\u1ecf c\u00e1p (ho\u1eb7c l\u1edbp v\u1ecf d\u1eabn c\u1ee7a c\u00e1p b\u1ecdc th\u00e9p); c\u00f3 c\u00e1c v\u1eadt li\u1ec7u \u0111\u1ec7m n\u1eb1m gi\u1eefa v\u00f2ng \u0111\u1ec7m v\u00e0 v\u00f2i c\u1ea5p li\u1ec7u.<\/p>\n\n\n\n

   10. S\u1eed d\u1ee5ng nhi\u1ec1u ph\u1edbt trong m\u1ed9t v\u00f2i h\u00fat.<\/p>\n\n\n\n

   11. Thi\u1ebft b\u1ecb d\u1eabn c\u00e1p c\u00f3 ren, v\u1edbi s\u1ed1 l\u01b0\u1ee3ng ren \u00edt h\u01a1n 5, ph\u1ea7n ren c\u00f3 chi\u1ec1u d\u00e0i \u00edt h\u01a1n 8 mm v\u00e0 \u00edt h\u01a1n 6 ren.<\/p>\n\n\n\n

   12. \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ren nh\u1ecf h\u01a1n c\u1ea5p 3 v\u00e0 b\u01b0\u1edbc ren nh\u1ecf h\u01a1n 0,7 mm.<\/p>\n\n\n\n

   13. V\u00f2i c\u1ea5p li\u1ec7u kh\u00f4ng s\u1eed d\u1ee5ng thi\u1ebfu v\u00f2ng \u0111\u1ec7m ho\u1eb7c v\u00e1ch ng\u0103n; ho\u1eb7c v\u00e1ch ng\u0103n \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong v\u00f2ng \u0111\u1ec7m; \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00e1ch ng\u0103n nh\u1ecf h\u01a1n \u0111\u01b0\u1eddng k\u00ednh trong c\u1ee7a v\u00f2i c\u1ea5p li\u1ec7u h\u01a1n 2mm; \u0111\u1ed9 d\u00e0y c\u1ee7a v\u00e1ch ng\u0103n nh\u1ecf h\u01a1n 2mm ho\u1eb7c \u0111\u1ed9 d\u00e0y c\u1ee7a v\u00e1ch ng\u0103n nh\u1ecf h\u01a1n 3mm khi \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00e1ch ng\u0103n l\u00e0 110mm tr\u1edf l\u00ean (t\u1ea5t c\u1ea3 c\u00e1c v\u00e1ch ng\u0103n \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm).<\/p>\n\n\n\n

   14. Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng v\u00f2i c\u1ea5p li\u1ec7u xo\u1eafn \u1ed1c, thi\u1ebfu v\u00f2ng kim lo\u1ea1i; v\u00f2ng kim lo\u1ea1i v\u00e0 v\u00f2i c\u1ea5p li\u1ec7u kh\u00f4ng kh\u1edbp nhau. (C\u00e1c v\u00f2i c\u1ea5p li\u1ec7u ch\u01b0a s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u00e0 kh\u00f4ng c\u1ea7n v\u00f2ng kim lo\u1ea1i).<\/p>\n\n\n\n

   15. Sau khi v\u00f2i h\u00fat \u0111\u01b0\u1ee3c \u00e9p, kh\u00f4ng c\u00f3 kho\u1ea3ng tr\u1ed1ng ho\u1eb7c m\u00e9p trong c\u1ee7a v\u00f2i h\u00fat kh\u00f4ng th\u1ec3 \u00e9p ch\u1eb7t v\u00f2ng \u0111\u1ec7m; m\u1eb7t cu\u1ed1i c\u1ee7a v\u00f2ng \u0111\u1ec7m kh\u00f4ng ti\u1ebfp x\u00fac t\u1ed1t v\u1edbi th\u00e0nh; ho\u1eb7c v\u00f2ng \u0111\u1ec7m c\u00f3 th\u1ec3 di chuy\u1ec3n \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

   16. V\u00f2i c\u1ea5p d\u00e2y lo\u1ea1i t\u1ea5m \u00e1p l\u1ef1c thi\u1ebfu bu l\u00f4ng n\u00e9n ho\u1eb7c bu l\u00f4ng n\u00e9n kh\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t, c\u00f3 th\u1ec3 l\u00e0m cho v\u00f2i c\u1ea5p d\u00e2y rung l\u1eafc r\u00f5 r\u1ec7t khi d\u00f9ng tay.<\/p>\n\n\n\n

   17. C\u00e1c v\u00f2i c\u1ea5p d\u00e2y d\u1ea1ng \u1ed1c v\u00edt kh\u00f4ng th\u1ec3 si\u1ebft ch\u1eb7t t\u1ea1i v\u1ecb tr\u00ed do hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng, g\u1ec9 s\u00e9t, v.v., ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ng\u00f3n c\u00e1i, ng\u00f3n tr\u1ecf v\u00e0 ng\u00f3n gi\u1eefa c\u1ee7a m\u1ed9t tay \u0111\u1ec3 \u0111\u1ea9y \u1ed1c si\u1ebft n\u00e9n ti\u1ebfn h\u01a1n n\u1eeda v\u00f2ng theo h\u01b0\u1edbng v\u1eb7n v\u00e0o.<\/p>\n\n\n\n

   18 s\u1ee3i c\u00e1p t\u1ea1i v\u00f2i phun \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c \u0111\u1ea9y b\u1eb1ng m\u1ed9t tay theo h\u01b0\u1edbng v\u00e0o v\u00f2i phun c\u00e1p.<\/p>\n\n\n\n

   19. Khi h\u1ed9p n\u1ed1i c\u00e1p \u0111i\u1ec7n \u00e1p cao c\u00f3 v\u1ecf b\u1ecdc s\u1eed d\u1ee5ng cao su c\u00e1ch \u0111i\u1ec7n, cao su c\u00e1ch \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ed5 \u0111\u1ea7y tr\u00ean mi\u1ec7ng ba nh\u00e1nh; cao su c\u00e1ch \u0111i\u1ec7n c\u00f3 c\u00e1c v\u1ebft n\u1ee9t c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed1i ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n

VI. K\u1ebft n\u1ed1i c\u00e1p:<\/strong><\/strong><\/h2>\n\n\n\n

    K\u1ebft n\u1ed1i c\u00e1p \u0111\u01b0\u1ee3c coi l\u00e0 b\u1ecb gi\u00e1n \u0111o\u1ea1n n\u1ebfu m\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau \u0111\u00e2y \u00e1p d\u1ee5ng:<\/p>\n\n\n\n

    1. D\u00e2y c\u00e1p kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi mi\u1ebfng v\u00e1 cao su nhi\u1ec7t.<\/p>\n\n\n\n

    2. D\u00e2y c\u00e1p (bao g\u1ed3m d\u00e2y c\u00e1p th\u00f4ng tin, chi\u1ebfu s\u00e1ng, t\u00edn hi\u1ec7u, \u0111i\u1ec1u khi\u1ec3n) n\u1ebfu h\u1ed9p n\u1ed1i d\u00e2y c\u00e1p kh\u00f4ng thu\u1ed9c lo\u1ea1i an to\u00e0n n\u1ed9i t\u1ea1i, kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u1ed9p n\u1ed1i d\u00e2y c\u00e1p ch\u1ed1ng ch\u00e1y n\u1ed5 (\u0111\u1ed1i v\u1edbi d\u00e2y c\u00e1p th\u00f4ng tin thu\u1ed9c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n an to\u00e0n n\u1ed9i t\u1ea1i, ph\u1ea3i s\u1eed d\u1ee5ng h\u1ed9p n\u1ed1i d\u00e2y c\u00e1p an to\u00e0n n\u1ed9i t\u1ea1i);<\/p>\n\n\n\n

    3. K\u1ebft n\u1ed1i c\u00e1p b\u1ecdc gi\u00e1p kh\u00f4ng s\u1eed d\u1ee5ng h\u1ed9p n\u1ed1i, h\u1ed9p gi\u1eefa kh\u00f4ng \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y b\u1eb1ng v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n ho\u1eb7c vi\u1ec7c l\u1ea5p \u0111\u1ea7y kh\u00f4ng \u0111\u1ea3m b\u1ea3o k\u00edn kh\u00edt, d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9 d\u00f2ng \u0111i\u1ec7n t\u1ea1i c\u00e1c m\u1ed1i n\u1ed1i.;<\/p>\n\n\n\n

    4. \u0110\u1ea7u cu\u1ed1i c\u1ee7a d\u00e2y c\u00e1p kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 ho\u1eb7c c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ed1ng ch\u00e1y n\u1ed5;<\/p>\n\n\n\n

    5. Thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 c\u00e1p c\u00f3 d\u00e2y d\u1eabn l\u1ed9 ra ngo\u00e0i;<\/p>\n\n\n\n

6. V\u1ecf b\u1ecdc cao su, v\u1ecf b\u1ecdc c\u00e1p polyethylene li\u00ean k\u1ebft ch\u00e9o b\u1ecb h\u01b0 h\u1ecfng, l\u00f5i c\u00e1p b\u1ecb l\u1ed9 (c\u00e1p c\u00f3 v\u1ecf b\u1ecdc b\u1ecb l\u1ed9 v\u1ecf b\u1ecdc ho\u1eb7c thi\u1ebft b\u1ecb an to\u00e0n n\u1ed9i t\u1ea1i k\u1ebft n\u1ed1i v\u1edbi c\u00e1p b\u1ecb l\u1ed9 d\u00e2y d\u1eabn, tr\u1eeb tr\u01b0\u1eddng h\u1ee3p n\u00e0y, nh\u01b0ng c\u1ea7n \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa ngay l\u1eadp t\u1ee9c).<\/p>\n\n\n\n

VII. Thi\u1ebft b\u1ecb c\u1eafm ch\u1ed1ng ch\u00e1y:<\/strong><\/strong><\/h2>\n\n\n\n

    1. Ph\u1ea7n ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a ph\u00edch c\u1eafm m\u00e1y khoan \u0111i\u1ec7n than ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u1ed5 c\u1eafm, ph\u1ea7n \u0111o t\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi ph\u00edch c\u1eafm, v\u00e0 vi\u1ec7c k\u1ebft n\u1ed1i ng\u01b0\u1ee3c l\u1ea1i \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ea5t m\u00e1t do n\u1ed5.<\/p>\n\n\n\n

    2. Thi\u1ebft b\u1ecb n\u1ed1i kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf ng\u0103n ch\u1eb7n vi\u1ec7c r\u00fat \u0111\u1ed9t ng\u1ed9t thi\u1ebft b\u1ecb di chuy\u1ec3n Xu, \u0111i\u1ec7n \u00e1p ngu\u1ed3n c\u1ea5p trong kho\u1ea3ng 660 V \u2013 1140 V c\u1ee7a thi\u1ebft b\u1ecb c\u1eafm kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb kh\u00f3a \u0111i\u1ec7n \u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/p>\n\n\n\n

    3. Khi x\u1ea3y ra s\u1ef1 c\u1ed1 m\u1ea5t \u0111i\u1ec7n, vi\u1ec7c ng\u1eaft k\u1ebft n\u1ed1i ti\u1ebfp x\u00fac ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ngay l\u1eadp t\u1ee9c. V\u1ecf c\u00f3 \u0111\u01b0\u1eddng k\u00ednh t\u1ed1i \u0111a c\u1ee7a b\u1ec1 m\u1eb7t v\u1ee1 w v\u00e0 chi\u1ec1u d\u00e0i hi\u1ec7u d\u1ee5ng t\u1ed1i thi\u1ec3u L kh\u00f4ng \u0111\u00e1p \u1ee9ng c\u00e1c quy \u0111\u1ecbnh c\u1ee7a B\u1ea3ng III v\u1ec1 m\u1ea5t m\u00e1t do n\u1ed5.<\/p>\n\n\n\n

VIII. Thi\u1ebft b\u1ecb chi\u1ebfu s\u00e1ng:<\/a><\/strong><\/h2>\n\n\n\n

    1. \u0110\u00e8n an to\u00e0n ch\u1ed1ng ch\u00e1y n\u1ed5 v\u00e0 \u0111\u00e8n l\u1ed3ng d\u00f9ng \u0111\u1ec3 chuy\u1ec3n c\u1ed5ng \u00e1p su\u1ea5t sang c\u1ed5ng Luo trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

    2. \u0110\u00e8n v\u00e0 \u0111\u00e8n l\u1ed3ng ch\u1ed1ng ch\u00e1y n\u1ed5 ch\u1ec9 \u0111\u01b0\u1ee3c m\u1edf sau khi ng\u1eaft ngu\u1ed3n \u0111i\u1ec7n, n\u1eafp trong su\u1ed1t c\u1ee7a thi\u1ebft b\u1ecb kh\u00f3a li\u00ean \u0111\u1ed9ng b\u1ecb h\u1ecfng do s\u1ef1 c\u1ed1 ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

    3. V\u1ecf k\u00ednh c\u1ee7a \u0111\u00e8n v\u00e0 \u0111\u00e8n l\u1ed3ng ch\u1ed1ng ch\u00e1y n\u1ed5 c\u00f3 d\u1ea5u hi\u1ec7u l\u1ecfng l\u1ebbo, n\u1ee9t v\u1ee1 ho\u1eb7c b\u1ecb v\u1ee1, \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn s\u1ef1 c\u1ed1 ch\u00e1y n\u1ed5.<\/p>\n\n\n\n

IX. \u0110\u00e8n m\u1ecf:<\/strong><\/strong><\/h2>\n\n\n\n

   \u0110\u00e8n khai th\u00e1c m\u1ecf s\u1eed d\u1ee5ng d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t ph\u1ea3i c\u00f3 d\u1ea5u hi\u1ec7u ch\u1ed1ng ch\u00e1y n\u1ed5 v\u00e0 d\u1ea5u hi\u1ec7u an to\u00e0n c\u1ee7a s\u1ea3n ph\u1ea9m khai th\u00e1c m\u1ecf than, v\u00e0 m\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y n\u1ed5:<\/p>\n\n\n\n

   1. \u0110\u1ea7u \u0111\u00e8n b\u1ecb n\u1ee9t, v\u00f2ng \u0111ai \u0111\u1ea7u \u0111\u00e8n l\u1ecfng l\u1ebbo, k\u00ednh b\u1ecb n\u1ee9t, gio\u0103ng \u0111\u1ea7u \u0111\u00e8n k\u00e9m, kh\u00f3a \u0111\u00e8n h\u1ecfng.<\/p>\n\n\n\n

   2. D\u00e2y \u0111\u00e8n b\u1ecb \u0111\u1ee9t v\u00e0 l\u00f5i d\u00e2y b\u1ecb l\u1ed9 ra, thi\u1ebft b\u1ecb d\u1eabn d\u00e2y \u0111\u00e8n b\u1ecb h\u01b0 h\u1ecfng, l\u1edbp c\u00e1ch \u0111i\u1ec7n kh\u00f4ng k\u00edn, d\u00e2y \u0111\u00e8n b\u1ecb can thi\u1ec7p.<\/p>","protected":false},"excerpt":{"rendered":"

Coal mine explosion-proof inspection standards I. General provisions:     1. In order to further implement the “Coal Mine Safety Regulations” and the standards and regulations on explosion-proof electrics, to improve the understanding of electromechanical workers on the performance of explosion-proof electrics, and to facilitate the mastery of the use of the standards in practical […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2154","post","type-post","status-publish","format-standard","hentry","category-explosion-proof-equipment"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Joe","author_link":"https:\/\/led.amasly.com\/vi\/author\/jacklin\/"},"uagb_comment_info":0,"uagb_excerpt":"Coal mine explosion-proof inspection standards I. General provisions:     1. In order to further implement the “Coal Mine Safety Regulations” and the standards and regulations on explosion-proof electrics, to improve the understanding of electromechanical workers on the performance of explosion-proof electrics, and to facilitate the mastery of the use of the standards in practical…","_links":{"self":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/comments?post=2154"}],"version-history":[{"count":2,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2154\/revisions"}],"predecessor-version":[{"id":2304,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2154\/revisions\/2304"}],"wp:attachment":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/media?parent=2154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/categories?post=2154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/tags?post=2154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}