{"id":8226,"date":"2026-05-22T16:38:15","date_gmt":"2026-05-22T16:38:15","guid":{"rendered":"https:\/\/www.yunrui-controls.com\/?p=8226"},"modified":"2026-05-22T16:38:41","modified_gmt":"2026-05-22T16:38:41","slug":"control-valve-on-off-valve-fault-tree-analysis-fta","status":"publish","type":"post","link":"https:\/\/www.yunrui-controls.com\/vi\/control-valve-on-off-valve-fault-tree-analysis-fta\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 ph\u00e2n t\u00edch c\u00e2y l\u1ed7i (FTA) c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n\/van \u0111\u00f3ng\/m\u1edf."},"content":{"rendered":"

Trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, van \u0111i\u1ec1u khi\u1ec3n<\/strong><\/a> V\u00e0 van b\u1eadt t\u1eaft<\/strong> Van l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ki\u1ec3m so\u00e1t cu\u1ed1i c\u00f9ng quan tr\u1ecdng. H\u1ecfng van kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t m\u00e0 c\u00f2n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 an to\u00e0n. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn h\u1ec7 th\u1ed1ng. Ph\u00e2n t\u00edch c\u00e2y l\u1ed7i (FTA)<\/strong> Ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn cho van \u0111i\u1ec1u khi\u1ec3n kh\u00ed n\u00e9n, van \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n, van \u0111i\u1ec7n t\u1eeb v\u00e0 van \u0111\u00f3ng ng\u1eaft kh\u00ed n\u00e9n.<\/p>\r\n\r\n\r\n\r\n

\ud83d\udd0d Fault Tree Structure Overview<\/h2>\r\n\r\n\r\n\r\n
\u3010TOP EVENT\u3011\ud83d\udd34 Valve Operation\/Control Abnormality\r\n\u251c\u2500\u3010OR\u3011\ud83d\udd27 Valve Body\/Trim Failure\r\n\u2502  \u251c\u2500 Plug\/Seat wear or corrosion\r\n\u2502  \u251c\u2500 Stem sticking or breakage\r\n\u2502  \u251c\u2500 Body leakage (external\/internal)\r\n\u2502  \u251c\u2500 Packing leakage\/sticking\r\n\u2502  \u2514\u2500 Media crystallization\/scaling causing blockage\r\n\u2502\r\n\u251c\u2500\u3010OR\u3011\u2699\ufe0f Actuator Failure\r\n\u2502  \u251c\u2500\u3010OR\u3011Pneumatic Diaphragm\/Piston Failure\r\n\u2502  \u2502  \u251c\u2500 Diaphragm rupture\r\n\u2502  \u2502  \u251c\u2500 Piston seal aging\/leakage\r\n\u2502  \u2502  \u2514\u2500 Spring breakage or fatigue\r\n\u2502  \u2514\u2500\u3010OR\u3011Electric Actuator Failure\r\n\u2502     \u251c\u2500 Motor burnout\r\n\u2502     \u251c\u2500 Capacitor damage\r\n\u2502     \u251c\u2500 Gear\/screw wear\r\n\u2502     \u2514\u2500 Limit switch malfunction\r\n\u2502\r\n\u251c\u2500\u3010OR\u3011\ud83d\udca8 Air Supply\/Power\/Signal Loop Failure\r\n\u2502  \u251c\u2500\u3010OR\u3011Air Supply Failure\r\n\u2502  \u2502  \u251c\u2500 Insufficient air pressure\r\n\u2502  \u2502  \u251c\u2500 Air line leakage\/blockage\r\n\u2502  \u2502  \u251c\u2500 Filter regulator clogged\r\n\u2502  \u2502  \u2514\u2500 Air supply with water\/oil\/contaminants\r\n\u2502  \u251c\u2500\u3010OR\u3011Power Supply Failure\r\n\u2502  \u2502  \u251c\u2500 24V\/220V power loss\r\n\u2502  \u2502  \u2514\u2500 Voltage fluctuation\r\n\u2502  \u2514\u2500\u3010OR\u3011Control Signal Failure\r\n\u2502     \u251c\u2500 4-20mA signal open\/short circuit\r\n\u2502     \u251c\u2500 DCS\/AO card failure\r\n\u2502     \u2514\u2500 Solenoid valve coil burnout\/plunger stuck\r\n\u2502\r\n\u2514\u2500\u3010OR\u3011\ud83d\udd29 Accessories & Installation Issues\r\n   \u251c\u2500 Positioner failure (I\/P converter, nozzle-flapper)\r\n   \u251c\u2500 Pneumatic booster\/volume booster failure\r\n   \u251c\u2500 Valve limit switch misalignment\r\n   \u2514\u2500 Mounting bracket loose<\/pre>\r\n\r\n\r\n\r\n
\u26a1 Valve Body\/Actuator Basic Events<\/h2>\r\n\r\n\r\n\r\n
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M\u00e3 s\u1ed1<\/th>\r\nM\u00f4 t\u1ea3 s\u1ef1 ki\u1ec7n c\u01a1 b\u1ea3n<\/th>\r\nC\u00e1c tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
V1<\/code><\/td>\r\nM\u00f2n ho\u1eb7c \u0103n m\u00f2n bugi\/\u0111\u1ebf van<\/td>\r\nR\u00f2 r\u1ec9 b\u00ean trong, kh\u1ea3 n\u0103ng \u0111\u00f3ng ng\u1eaft k\u00e9m, hi\u1ec7u su\u1ea5t \u0111i\u1ec1u khi\u1ec3n suy gi\u1ea3m.<\/td>\r\n<\/tr>\r\n
V2<\/code><\/td>\r\nCu\u1ed1ng b\u1ecb d\u00ednh\/g\u00e3y<\/td>\r\nVan kh\u00f4ng di chuy\u1ec3n, ph\u1ea3n h\u1ed3i ch\u1eadm, kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u ph\u1ea3n h\u1ed3i thay \u0111\u1ed5i.<\/td>\r\n<\/tr>\r\n
V3<\/code><\/td>\r\nR\u00f2 r\u1ec9\/d\u00ednh bao b\u00ec<\/td>\r\nR\u00f2 r\u1ec9 b\u00ean ngo\u00e0i \u1edf th\u00e2n van, ma s\u00e1t t\u0103ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng tr\u01b0\u1ee3t gi\u1eadt.<\/td>\r\n<\/tr>\r\n
V4<\/code><\/td>\r\nV\u1ee1 c\u01a1 ho\u00e0nh<\/td>\r\nVan kh\u00ed n\u00e9n kh\u00f4ng di chuy\u1ec3n, b\u1ecb k\u1eb9t \u1edf m\u1ed9t v\u1ecb tr\u00ed.<\/td>\r\n<\/tr>\r\n
V5<\/code><\/td>\r\ng\u00e3y l\u00f2 xo ho\u1eb7c m\u1ecfi<\/td>\r\nVan kh\u00f4ng th\u1ec3 tr\u1edf v\u1ec1 v\u1ecb tr\u00ed ban \u0111\u1ea7u, l\u1ef1c \u0111\u1ea7u ra kh\u00f4ng \u0111\u1ee7.<\/td>\r\n<\/tr>\r\n
V6<\/code><\/td>\r\n\u0110\u1ed9ng c\u01a1 b\u1ecb ch\u00e1y (\u0111i\u1ec7n)<\/td>\r\nVan \u0111i\u1ec7n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, kh\u00f4ng c\u00f3 ti\u1ebfng \u0111\u1ed9ng ho\u1eb7c b\u1ecb qu\u00e1 nhi\u1ec7t.<\/td>\r\n<\/tr>\r\n
V7<\/code><\/td>\r\nC\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n b\u1ecb tr\u1ee5c tr\u1eb7c<\/td>\r\nVan \u0111\u00f3ng m\u1edf kh\u00f4ng d\u1eebng \u1edf v\u1ecb tr\u00ed \u0111\u00e3 \u0111\u1ecbnh, ho\u1eb7c ph\u1ea3n h\u1ed3i sai.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n
\u26a1 Air Supply\/Power\/Signal\/Accessory Basic Events<\/h2>\r\n\r\n\r\n\r\n
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M\u00e3 s\u1ed1<\/th>\r\nM\u00f4 t\u1ea3 s\u1ef1 ki\u1ec7n c\u01a1 b\u1ea3n<\/th>\r\nC\u00e1c tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
A1<\/code><\/td>\r\n\u00c1p su\u1ea5t kh\u00f4ng kh\u00ed kh\u00f4ng \u0111\u1ee7<\/td>\r\nVan chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm, l\u1ef1c \u0111\u1ea9y kh\u00f4ng \u0111\u1ee7, kh\u00f4ng th\u1ec3 m\u1edf\/\u0111\u00f3ng ho\u00e0n to\u00e0n.<\/td>\r\n<\/tr>\r\n
A2<\/code><\/td>\r\nB\u1ed9 \u0111i\u1ec1u ch\u1ec9nh l\u1ecdc b\u1ecb t\u1eafc ngh\u1ebdn<\/td>\r\nL\u01b0u l\u01b0\u1ee3ng kh\u00ed gi\u1ea3m, ph\u1ea3n h\u1ed3i van ch\u1eadm<\/td>\r\n<\/tr>\r\n
A3<\/code><\/td>\r\nCung c\u1ea5p kh\u00f4ng kh\u00ed b\u1eb1ng n\u01b0\u1edbc\/d\u1ea7u<\/td>\r\n\u0102n m\u00f2n b\u1ed9 \u0111\u1ecbnh v\u1ecb\/van \u0111i\u1ec7n t\u1eeb, l\u00e3o h\u00f3a m\u00e0ng ng\u0103n nhanh<\/td>\r\n<\/tr>\r\n
A4<\/code><\/td>\r\nL\u1ed7i b\u1ed9 \u0111\u1ecbnh v\u1ecb<\/td>\r\nVan m\u1ea5t ki\u1ec3m so\u00e1t, rung l\u1eafc, ph\u1ea3n h\u1ed3i ch\u1eadm ho\u1eb7c kh\u00f4ng chuy\u1ec3n \u0111\u1ed9ng.<\/td>\r\n<\/tr>\r\n
A5<\/code><\/td>\r\nCu\u1ed9n d\u00e2y van \u0111i\u1ec7n t\u1eeb b\u1ecb ch\u00e1y\/piston b\u1ecb k\u1eb9t<\/td>\r\nVan \u0111\u00f3ng m\u1edf kh\u00f4ng d\u1ecbch chuy\u1ec3n, v\u1eabn \u1edf v\u1ecb tr\u00ed ban \u0111\u1ea7u.<\/td>\r\n<\/tr>\r\n
A6<\/code><\/td>\r\nT\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n h\u1edf\/ng\u1eafn m\u1ea1ch<\/td>\r\nM\u1ea5t t\u00edn hi\u1ec7u van, gi\u1eef nguy\u00ean v\u1ecb tr\u00ed ho\u1eb7c v\u1ec1 0.<\/td>\r\n<\/tr>\r\n
A7<\/code><\/td>\r\nT\u1eafc ngh\u1ebdn do k\u1ebft tinh\/\u0111\u00f3ng c\u1eb7n trong m\u00f4i tr\u01b0\u1eddng nu\u00f4i c\u1ea5y<\/td>\r\nVan b\u1ecb k\u1eb9t \u1edf v\u1ecb tr\u00ed gi\u1eefa, kh\u00f3 di chuy\u1ec3n.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n
\ud83d\udee0\ufe0f Control Valve\/On-Off Valve Troubleshooting Guide (By Priority)<\/h2>\r\n\r\n\r\n\r\n
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  1. \u2460 Quan s\u00e1t c\u00e1c tri\u1ec7u ch\u1ee9ng<\/strong> Van c\u00f3 \u0111ang di chuy\u1ec3n kh\u00f4ng? N\u00f3 \u0111\u00e3 \u0111\u1ea1t \u0111\u1ebfn v\u1ecb tr\u00ed c\u1ea7n thi\u1ebft ch\u01b0a? C\u00f3 ti\u1ebfng \u1ed3n\/rung \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng n\u00e0o kh\u00f4ng? T\u00edn hi\u1ec7u ph\u1ea3n h\u1ed3i c\u00f3 thay \u0111\u1ed5i kh\u00f4ng?<\/li>\r\n
  2. \u2461 Ki\u1ec3m tra ngu\u1ed3n \u0111i\u1ec7n\/\u00e1p su\u1ea5t<\/strong> Van kh\u00ed n\u00e9n: \u00c1p su\u1ea5t kh\u00ed c\u00f3 \u0111\u1ee7 kh\u00f4ng? B\u1ed9 l\u1ecdc \u0111i\u1ec1u ch\u1ec9nh c\u00f3 b\u1ecb t\u1eafc ngh\u1ebdn kh\u00f4ng? Van \u0111i\u1ec7n: Ngu\u1ed3n \u0111i\u1ec7n c\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng kh\u00f4ng?<\/li>\r\n
  3. \u2462 T\u00edn hi\u1ec7u th\u1eed nghi\u1ec7m<\/strong> S\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng\/m\u00e1y ph\u00e1t t\u00edn hi\u1ec7u \u0111\u1ec3 c\u1ea5p d\u00f2ng \u0111i\u1ec7n 4-20mA, quan s\u00e1t xem van c\u00f3 ph\u1ea3n \u1ee9ng t\u01b0\u01a1ng \u1ee9ng hay kh\u00f4ng.<\/li>\r\n
  4. \u2463 Ki\u1ec3m tra ph\u1ee5 ki\u1ec7n<\/strong> Ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng b\u1ed9 \u0111\u1ecbnh v\u1ecb, ki\u1ec3m tra chuy\u1ec3n \u0111\u1ed5i van \u0111i\u1ec7n t\u1eeb, \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n
    \ud83d\udca1 Typical Valve Failure Patterns<\/h2>\r\n\r\n\r\n\r\n
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    • Kh\u00f4ng c\u00f3 chuy\u1ec3n \u0111\u1ed9ng<\/strong> \u2192 Ki\u1ec3m tra ngu\u1ed3n c\u1ea5p kh\u00ed\/ngu\u1ed3n \u0111i\u1ec7n\/t\u00edn hi\u1ec7u\/van \u0111i\u1ec7n t\u1eeb<\/li>\r\n
    • \u0110\u1ed9t qu\u1ef5 m\u1ed9t ph\u1ea7n<\/strong> \u2192 Ki\u1ec3m tra v\u1ecb tr\u00ed\/h\u00e0nh tr\u00ecnh\/\u0111\u1ed9 b\u00e1m d\u00ednh<\/li>\r\n
    • Rung\/Tr\u01b0\u1ee3t gi\u00e1n \u0111o\u1ea1n<\/strong> \u2192 Ki\u1ec3m tra \u0111\u1ed9 l\u1ee3i c\u1ee7a b\u1ed9 \u0111\u1ecbnh v\u1ecb\/ma s\u00e1t \u0111\u00f3ng g\u00f3i\/\u0111\u1ed9 \u1ed5n \u0111\u1ecbnh kh\u00f4ng kh\u00ed<\/li>\r\n
    • R\u00f2 r\u1ec9 b\u00ean trong<\/strong> \u2192 Ki\u1ec3m tra ph\u00edch c\u1eafm v\u00e0 \u0111\u1ebf<\/li>\r\n
    • R\u00f2 r\u1ec9 b\u00ean ngo\u00e0i<\/strong> \u2192 Ki\u1ec3m tra gio\u0103ng\/v\u00f2ng \u0111\u1ec7m<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
      \ud83d\udccb Case Study 1: Pneumatic Control Valve Slow Movement with Stick-Slip<\/h2>\r\n\r\n\r\n\r\n
      Tri\u1ec7u ch\u1ee9ng:<\/strong> Van \u0111i\u1ec1u khi\u1ec3n \u00e1p su\u1ea5t h\u01a1i n\u01b0\u1edbc cho th\u1ea5y ph\u1ea3n h\u1ed3i ch\u1eadm sau khi thay \u0111\u1ed5i \u0111i\u1ec3m \u0111\u1eb7t, v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng tr\u01b0\u1ee3t gi\u00e1n \u0111o\u1ea1n trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\r\n\r\n\r\n\r\n
      Quy tr\u00ecnh kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/strong><\/p>\r\n\r\n\r\n\r\n
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      1. Ki\u1ec3m tra \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed: B\u00ecnh th\u01b0\u1eddng \u1edf m\u1ee9c 0,4 MPa (58 psi)<\/li>\r\n
      2. \u0110\u00e3 ki\u1ec3m tra \u00e1p su\u1ea5t \u0111\u1ea7u ra c\u1ee7a b\u1ed9 \u0111\u1ecbnh v\u1ecb, s\u1ef1 bi\u1ebfn thi\u00ean b\u00ecnh th\u01b0\u1eddng.<\/li>\r\n
      3. \u0110\u00e3 ki\u1ec3m tra b\u1ed9 l\u1ecdc \u0111i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t, ph\u00e1t hi\u1ec7n b\u1ecb t\u1eafc ngh\u1ebdn do d\u1ea7u l\u1eabn v\u00e0o.<\/li>\r\n
      4. \u0110\u00e3 thay th\u1ebf b\u1ed9 l\u1ecdc v\u00e0 v\u1ec7 sinh b\u1ea7u l\u1ecdc, van ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng tr\u1edf l\u1ea1i,<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n
        \u2705 Root Cause:<\/strong> B\u1ed9 \u0111i\u1ec1u ch\u1ec9nh l\u1ecdc b\u1ecb t\u1eafc ngh\u1ebdn g\u00e2y ra l\u01b0u l\u01b0\u1ee3ng kh\u00ed kh\u00f4ng \u0111\u1ee7. \ud83d\udccc Preventive Measures:<\/strong> Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed, v\u1ec7 sinh ho\u1eb7c thay th\u1ebf b\u1ed9 l\u1ecdc, l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb l\u1ecdc kh\u00ed FRL.<\/p>\r\n\r\n\r\n\r\n
        \ud83d\udccb Case Study 2: Solenoid-Operated Valve Cannot Open<\/h2>\r\n\r\n\r\n\r\n
        Tri\u1ec7u ch\u1ee9ng:<\/strong> H\u1ec7 th\u1ed1ng DCS \u0111\u00e3 ra l\u1ec7nh m\u1edf van, nh\u01b0ng van kh\u00f4ng di chuy\u1ec3n, ph\u1ea3n h\u1ed3i v\u1eabn hi\u1ec3n th\u1ecb v\u1ecb tr\u00ed \u0111\u00f3ng.<\/p>\r\n\r\n\r\n\r\n
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        1. Quan s\u00e1t th\u1ef1c \u0111\u1ecba: \u0110\u00e8n b\u00e1o van \u0111i\u1ec7n t\u1eeb s\u00e1ng, nh\u01b0ng kh\u00f4ng c\u00f3 ti\u1ebfng x\u1ea3 kh\u00ed.<\/li>\r\n
        2. T\u00f4i d\u00f9ng tua v\u00edt ch\u1ea1m v\u00e0o cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb, c\u00f3 l\u1ef1c t\u1eeb nh\u01b0ng p\u00edt t\u00f4ng kh\u00f4ng chuy\u1ec3n \u0111\u1ed9ng.<\/li>\r\n
        3. Th\u00e1o van \u0111i\u1ec7n t\u1eeb, ph\u00e1t hi\u1ec7n p\u00edt t\u00f4ng b\u1ecb k\u1eb9t do c\u00e1c h\u1ea1t r\u1ec9 s\u00e9t.<\/li>\r\n
        4. \u0110\u00e3 v\u1ec7 sinh p\u00edt t\u00f4ng v\u00e0 l\u1eafp b\u1ed9 l\u1ecdc s\u01a1 c\u1ea5p, m\u00e1y ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng tr\u1edf l\u1ea1i.<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n
          \u2705 Root Cause:<\/strong> G\u1ec9 s\u00e9t trong \u0111\u01b0\u1eddng d\u1eabn kh\u00ed khi\u1ebfn p\u00edt t\u00f4ng van \u0111i\u1ec7n t\u1eeb b\u1ecb k\u1eb9t. \ud83d\udccc Preventive Measures:<\/strong> L\u1eafp b\u1ed9 l\u1ecdc ch\u00ednh x\u00e1c \u1edf c\u1eeda h\u00fat gi\u00f3, th\u01b0\u1eddng xuy\u00ean x\u1ea3 h\u1ebft h\u01a1i \u1ea9m trong b\u00ecnh ch\u1ee9a kh\u00ed.<\/p>\r\n\r\n\r\n\r\n
          \ud83c\udfaf High-Occurrence Minimal Cut Sets (Single Point Failures)<\/h2>\r\n\r\n\r\n\r\n
            \r\n
          • {A1}<\/code> \u00c1p su\u1ea5t kh\u00f4ng kh\u00ed kh\u00f4ng \u0111\u1ee7<\/strong> \u2192 L\u1ef1c \u0111\u1ea9y van kh\u00f4ng \u0111\u1ee7<\/li>\r\n
          • {A2}<\/code> B\u1ed9 \u0111i\u1ec1u ch\u1ec9nh l\u1ecdc b\u1ecb t\u1eafc ngh\u1ebdn<\/strong> \u2192 Chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm\/tr\u01b0\u1ee3t gi\u1eadt<\/li>\r\n
          • {A4}<\/code> L\u1ed7i b\u1ed9 \u0111\u1ecbnh v\u1ecb<\/strong> \u2192 M\u1ea5t ki\u1ec3m so\u00e1t<\/li>\r\n
          • {A5}<\/code> Van \u0111i\u1ec7n t\u1eeb b\u1ecb k\u1eb9t<\/strong> \u2192 Van \u0111\u00f3ng m\u1edf kh\u00f4ng chuy\u1ec3n \u0111\u1ed9ng<\/li>\r\n
          • {V2}<\/code> G\u1eafn v\u00e0o th\u00e2n c\u00e2y<\/strong> \u2192 Chuy\u1ec3n \u0111\u1ed9ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
            \ud83d\udcc8 Field Failure Rate Reference<\/h2>\r\n\r\n\r\n\r\n
            D\u1ef1a tr\u00ean s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea t\u1eeb l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p h\u00f3a d\u1ea7u:<\/p>\r\n\r\n\r\n\r\n
              \r\n
            • B\u1ed9 \u0111i\u1ec1u ch\u1ec9nh l\u1ecdc b\u1ecb t\u1eafc ngh\u1ebdn: 5-15%<\/strong> x\u1ea3y ra h\u00e0ng n\u0103m<\/li>\r\n
            • L\u1ed7i b\u1ed9 \u0111\u1ecbnh v\u1ecb: 3-10%<\/strong><\/li>\r\n
            • L\u1ed7i cu\u1ed9n d\u00e2y\/piston \u0111i\u1ec7n t\u1eeb: 2-8%<\/strong><\/li>\r\n
            • \u0110\u1ed9 m\u00f2n c\u1ee7a bugi\/\u0111\u1ebf c\u1eafm: 5-20%<\/strong> (T\u00f9y thu\u1ed9c v\u00e0o \u0111i\u1ec1u ki\u1ec7n d\u1ecbch v\u1ee5)<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
              L\u01b0u \u00fd: T\u1ef7 l\u1ec7 h\u1ecfng h\u00f3c th\u1ef1c t\u1ebf b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 b\u1edfi \u0111\u1ed9 s\u1ea1ch c\u1ee7a kh\u00f4ng kh\u00ed, \u0111\u1ed9 m\u00e0i m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u l\u1ecdc v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ea3o tr\u00ec.<\/em><\/p>\r\n\r\n\r\n\r\n
              \ud83d\udcdd Summary<\/h2>\r\n\r\n\r\n\r\n
              Th\u00f4ng qua ph\u00e2n t\u00edch c\u00e2y s\u1ef1 c\u1ed1 (FTA), ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng c\u00e1c ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n v\u00e0 van \u0111\u00f3ng m\u1edf. Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd:<\/p>\r\n\r\n\r\n\r\n
                \r\n
              • Kho\u1ea3ng 70% l\u1ed7i van<\/strong> c\u00f3 li\u00ean quan \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed v\u00e0 t\u00ecnh tr\u1ea1ng c\u1ee7a c\u00e1c ph\u1ee5 ki\u1ec7n.<\/li>\r\n
              • Vi\u1ec7c b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh l\u1ecdc v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 h\u1ecfng h\u00f3c.<\/li>\r\n
              • Vi\u1ec7c x\u00e2y d\u1ef1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u1ec1 c\u00e1c tr\u01b0\u1eddng h\u1ee3p l\u1ed7i gi\u00fap nhanh ch\u00f3ng ch\u1ea9n \u0111o\u00e1n c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1.<\/li>\r\n
              • \u0110\u1ed1i v\u1edbi c\u00e1c van quan tr\u1ecdng, c\u1ea7n xem x\u00e9t ph\u01b0\u01a1ng \u00e1n d\u1ef1 ph\u00f2ng ho\u1eb7c b\u1ea3o tr\u00ec ph\u00f2ng ng\u1eeba \u0111\u1ecbnh k\u1ef3.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                 <\/p>","protected":false},"excerpt":{"rendered":"
                In industrial automation control systems, control valves and on-off valves are critical final control elements. Valve failures not only impact production efficiency but can also create safety hazards. This article presents a systematic Fault Tree Analysis (FTA) approach for pneumatic control valves, electric control valves, solenoid valves, and pneumatic shut-off valves. \ud83d\udd0d Fault Tree Structure […]<\/p>\n","protected":false},"author":1,"featured_media":8228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"default","adv-header-id-meta":"","stick-header-meta":"default","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-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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[384,1],"tags":[448,449,450,451],"class_list":["post-8226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-blogs","tag-control-valve","tag-on-off-valve","tag-fta","tag-fault-tree-analysis"],"acf":[],"yoast_head":"\nControl Valve \/ On-Off Valve Fault Tree Analysis (FTA)<\/title>\n<meta name=\"description\" content=\"Comprehensive fault tree analysis for control valves and on-off valves. 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