{"id":1176,"date":"2025-10-13T00:34:37","date_gmt":"2025-10-12T17:34:37","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-so-voi-thep-ma-kem-nhom-phan-tich-chi-phi-bao-tri\/"},"modified":"2025-10-13T00:34:37","modified_gmt":"2025-10-12T17:34:37","slug":"inox-so-voi-thep-ma-kem-nhom-phan-tich-chi-phi-bao-tri","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-so-voi-thep-ma-kem-nhom-phan-tich-chi-phi-bao-tri\/","title":{"rendered":"Inox so v\u1edbi th\u00e9p, m\u1ea1 k\u1ebdm, nh\u00f4m: ph\u00e2n t\u00edch chi ph\u00ed &#038; b\u1ea3o tr\u00ec"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-khung-phan-tich-capex-opex-va-lcc\">Khung ph\u00e2n t\u00edch: CAPEX, OPEX v\u00e0 LCC<\/a><\/li>\n<li><a href=\"#toc-1-chi-so-chi-phi-tham-chieu-theo-vat-lieu\">Ch\u1ec9 s\u1ed1 chi ph\u00ed tham chi\u1ebfu theo v\u1eadt li\u1ec7u<\/a><\/li>\n<li><a href=\"#toc-2-anh-huong-moi-truong-tai-sao-cung-vat-lieu-opex-kh\">\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng: t\u1ea1i sao c\u00f9ng v\u1eadt li\u1ec7u, OPEX kh\u00e1c nhau?<\/a><\/li>\n<li><a href=\"#toc-3-mo-hinh-lcc-1020-nam-ba-kich-ban-thuc-te\">M\u00f4 h\u00ecnh LCC 10\u201320 n\u0103m: ba k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-4-khi-nao-inox-re-hon-tren-vong-doi\">Khi n\u00e0o Inox \u201cr\u1ebb\u201d h\u01a1n tr\u00ean v\u00f2ng \u0111\u1eddi?<\/a><\/li>\n<li><a href=\"#toc-5-chi-phi-bao-tri-dien-hinh-theo-vat-lieu\">Chi ph\u00ed b\u1ea3o tr\u00ec \u0111i\u1ec3n h\u00ecnh theo v\u1eadt li\u1ec7u<\/a><\/li>\n<li><a href=\"#toc-6-rui-ro-ky-thuat-lam-doi-opex\">R\u1ee7i ro k\u1ef9 thu\u1eadt l\u00e0m \u0111\u1ed9i OPEX<\/a><\/li>\n<li><a href=\"#toc-7-lua-chon-theo-ung-dung-pho-bien-tai-viet-nam\">L\u1ef1a ch\u1ecdn theo \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-8-cach-tu-tinh-nhanh-lcc-cho-du-an-cua-ban\">C\u00e1ch t\u1ef1 t\u00ednh nhanh LCC cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n<\/a><\/li>\n<li><a href=\"#toc-9-tieu-chuan-va-thong-so-ky-thuat-nen-ghi-ro\">Ti\u00eau chu\u1ea9n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00ean ghi r\u00f5<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan-chon-vat-lieu-theo-vong-doi-khong-chi-the\">K\u1ebft lu\u1eadn: ch\u1ecdn v\u1eadt li\u1ec7u theo v\u00f2ng \u0111\u1eddi, kh\u00f4ng ch\u1ec9 theo gi\u00e1 mua<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Chi ph\u00ed ban \u0111\u1ea7u v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec l\u00e0 hai bi\u1ebfn s\u1ed1 quy\u1ebft \u0111\u1ecbnh t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (LCC) khi ch\u1ecdn v\u1eadt li\u1ec7u kim lo\u1ea1i cho c\u00f4ng tr\u00ecnh, d\u00e2y chuy\u1ec1n, hay x\u01b0\u1edfng. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch c\u1ee5 th\u1ec3 Inox so v\u1edbi th\u00e9p \u0111en s\u01a1n, th\u00e9p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng (HDG), v\u00e0 nh\u00f4m, gi\u00fap k\u1ef9 s\u01b0, nh\u00e0 th\u1ea7u, ch\u1ee7 x\u01b0\u1edfng t\u1ea1i Vi\u1ec7t Nam (\u0111\u1eb7c bi\u1ec7t kh\u00ed h\u1eadu \u1ea9m, m\u01b0a axit \u1edf H\u00e0 N\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng bi\u1ec3n mi\u1ec1n Trung\/B\u1eafc B\u1ed9) \u0111\u01b0a ra l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u chi ph\u00ed theo v\u00f2ng \u0111\u1eddi.<\/p>\n<h2 id=\"toc-0-khung-phan-tich-capex-opex-va-lcc\">Khung ph\u00e2n t\u00edch: CAPEX, OPEX v\u00e0 LCC<\/h2>\n<p>&#8211; Chi ph\u00ed ban \u0111\u1ea7u (CAPEX): v\u1eadt li\u1ec7u + gia c\u00f4ng + l\u1eafp \u0111\u1eb7t + x\u1eed l\u00fd b\u1ec1 m\u1eb7t (s\u01a1n\/nh\u00fang k\u1ebdm\/\u0111\u00e1nh b\u00f3ng).<br \/>\n&#8211; Chi ph\u00ed v\u1eadn h\u00e0nh \u2013 b\u1ea3o tr\u00ec (OPEX): l\u00e0m s\u1ea1ch \u0111\u1ecbnh k\u1ef3, s\u01a1n l\u1ea1i\/k\u00ea\u0301t c\u1ea5u b\u1ea3o v\u1ec7, thay th\u1ebf b\u1ed9 ph\u1eadn h\u1ecfng, ph\u1ee5 gia h\u00f3a ch\u1ea5t, d\u1ee5ng c\u1ee5 ti\u1ebfp c\u1eadn (gi\u00e0n gi\u00e1o), nh\u00e2n c\u00f4ng v\u00e0 chi ph\u00ed d\u1eebng m\u00e1y.<br \/>\n&#8211; T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (LCC): LCC = CAPEX + NPV(OPEX trong v\u00f2ng \u0111\u1eddi). V\u1edbi chi\u1ebft kh\u1ea5u i (th\u01b0\u1eddng 8\u201312% trong c\u00f4ng nghi\u1ec7p VN), n\u00ean t\u00ednh cho 10\u201320 n\u0103m.<\/p>\n<p>G\u1ee3i \u00fd tham s\u1ed1 chi\u1ebft kh\u1ea5u: 10%\/n\u0103m \u0111\u1ec3 d\u1ec5 so s\u00e1nh NPV.<\/p>\n<h2 id=\"toc-1-chi-so-chi-phi-tham-chieu-theo-vat-lieu\">Ch\u1ec9 s\u1ed1 chi ph\u00ed tham chi\u1ebfu theo v\u1eadt li\u1ec7u<\/h2>\n<p>\u0110\u1ec3 so s\u00e1nh, \u0111\u1eb7t \u201cth\u00e9p carbon ch\u01b0a ph\u1ee7\u201d = 1.0 (ch\u1ec9 l\u00e0m m\u1ed1c, th\u1ef1c t\u1ebf r\u1ea5t hi\u1ebfm d\u00f9ng ngo\u00e0i tr\u1eddi m\u00e0 kh\u00f4ng b\u1ea3o v\u1ec7). D\u1ea3i ch\u1ec9 s\u1ed1 ban \u0111\u1ea7u (tham kh\u1ea3o k\u1ef9 thu\u1eadt, c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng v\u00e0 thi\u1ebft k\u1ebf):<\/p>\n<p>&#8211; Th\u00e9p s\u01a1n c\u00f4ng nghi\u1ec7p (2\u20133 l\u1edbp epoxy\/PU): 1.10\u20131.30<br \/>\n&#8211; Th\u00e9p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng (HDG, theo ASTM A123, l\u1edbp k\u1ebdm ~70\u2013100 \u00b5m): 1.35\u20131.60<br \/>\n&#8211; Nh\u00f4m ki\u1ebfn tr\u00fac\/5000-series (theo kh\u1ed1i l\u01b0\u1ee3ng, kh\u00f4ng t\u00ednh l\u1ee3i th\u1ebf nh\u1eb9): 2.5\u20133.5<br \/>\n&#8211; Inox 201\/430 (n\u1ed9i th\u1ea5t\/kh\u00f4): 2.0\u20132.8<br \/>\n&#8211; Inox 304 (\u0111a d\u1ee5ng, 2B\/No.4): 3.0\u20134.0<br \/>\n&#8211; Inox 316\/316L (m\u00f4i tr\u01b0\u1eddng clorua\/bi\u1ec3n): 4.5\u20135.5<\/p>\n<p>L\u01b0u \u00fd:<br \/>\n&#8211; So theo tr\u1ecdng l\u01b0\u1ee3ng s\u1ebd b\u1ea5t l\u1ee3i cho nh\u00f4m; so theo c\u00f9ng ch\u1ee9c n\u0103ng, nh\u00f4m c\u00f3 l\u1ee3i th\u1ebf nh\u1eb9 (gi\u1ea3m k\u1ebft c\u1ea5u ph\u1ee5, v\u1eadn chuy\u1ec3n).<br \/>\n&#8211; Inox c\u1ea7n gia c\u00f4ng\/h\u00e0n \u0111\u00fang ti\u00eau chu\u1ea9n v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a m\u1ed1i h\u00e0n \u0111\u1ec3 ph\u00e1t huy kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<h2 id=\"toc-2-anh-huong-moi-truong-tai-sao-cung-vat-lieu-opex-kh\">\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng: t\u1ea1i sao c\u00f9ng v\u1eadt li\u1ec7u, OPEX kh\u00e1c nhau?<\/h2>\n<p>D\u1ef1a theo ISO 9223 (ph\u00e2n lo\u1ea1i \u0103n m\u00f2n):<br \/>\n&#8211; C1\u2013C2: trong nh\u00e0 kh\u00f4\/s\u1ea1ch, \u0103n m\u00f2n r\u1ea5t th\u1ea5p.<br \/>\n&#8211; C3: ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb\/xa c\u00f4ng nghi\u1ec7p (H\u00e0 N\u1ed9i \u0111i\u1ec3n h\u00ecnh), \u1ea9m, m\u01b0a axit m\u1ee9c v\u1eeba.<br \/>\n&#8211; C4: g\u1ea7n bi\u1ec3n\/khu c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t, \u1ea9m m\u1eb7n.<br \/>\n&#8211; C5: b\u1edd bi\u1ec3n tr\u1ef1c di\u1ec7n\/s\u01b0\u01a1ng mu\u1ed1i \u0111\u1eadm\/kh\u00ed quy\u1ec3n c\u00f4ng nghi\u1ec7p n\u1eb7ng.<\/p>\n<p>H\u00e0m \u00fd:<br \/>\n&#8211; S\u01a1n: chu k\u1ef3 s\u01a1n l\u1ea1i r\u00fat ng\u1eafn m\u1ea1nh khi l\u00ean C4\u2013C5.<br \/>\n&#8211; HDG: tu\u1ed5i th\u1ecd l\u1edbp k\u1ebdm ph\u1ee5 thu\u1ed9c t\u1ed1c \u0111\u1ed9 ti\u00eau hao k\u1ebdm; C4\u2013C5 gi\u1ea3m nhanh.<br \/>\n&#8211; Inox 304 b\u1ec1n \u1edf C2\u2013C3; \u1edf C4 c\u00f3 nguy c\u01a1 r\u1ed7 do clorua, C5 th\u01b0\u1eddng c\u1ea7n 316L.<br \/>\n&#8211; Nh\u00f4m ch\u1ecbu r\u1ed7 pitting trong m\u00f4i tr\u01b0\u1eddng clorua, c\u1ea7n s\u01a1n\/ano\u0111i h\u00f3a v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n<h2 id=\"toc-3-mo-hinh-lcc-1020-nam-ba-kich-ban-thuc-te\">M\u00f4 h\u00ecnh LCC 10\u201320 n\u0103m: ba k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf<\/h2>\n<p>Gi\u1ea3 \u0111\u1ecbnh chi\u1ebft kh\u1ea5u 10%\/n\u0103m. Chi ph\u00ed b\u1ea3o tr\u00ec th\u1ec3 hi\u1ec7n theo t\u1ef7 l\u1ec7 CAPEX ban \u0111\u1ea7u. K\u1ebft qu\u1ea3 l\u00e0 xu h\u01b0\u1edbng \u0111\u1ec3 ra quy\u1ebft \u0111\u1ecbnh; d\u1ef1 \u00e1n th\u1ef1c ph\u1ea3i t\u00ednh theo BOQ c\u1ee5 th\u1ec3.<\/p>\n<h3>K\u1ecbch b\u1ea3n A \u2013 Trong nh\u00e0 C2 (x\u01b0\u1edfng kh\u00f4, th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c)<\/h3>\n<p>&#8211; Th\u00e9p s\u01a1n: CAPEX \u2248 1.15; s\u01a1n l\u1ea1i m\u1ed7i 7\u201310 n\u0103m, 25\u201335% CAPEX\/l\u1ea7n (v\u1ec7 sinh b\u1ec1 m\u1eb7t + s\u01a1n). NPV 20 n\u0103m \u2248 1.30\u20131.45.<br \/>\n&#8211; HDG: CAPEX \u2248 1.40; g\u1ea7n nh\u01b0 kh\u00f4ng b\u1ea3o tr\u00ec \u1edf C2. NPV \u2248 1.40.<br \/>\n&#8211; Inox 304: CAPEX \u2248 3.2\u20133.6; v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 0.3\u20130.7%\/n\u0103m. NPV 20 n\u0103m \u2248 3.25\u20133.90.<br \/>\nK\u1ebft lu\u1eadn: x\u00e9t thu\u1ea7n chi ph\u00ed, th\u00e9p s\u01a1n\/HDG r\u1ebb h\u01a1n. Tuy nhi\u00ean, n\u1ebfu y\u00eau c\u1ea7u v\u1ec7 sinh, kh\u00f4ng nhi\u1ec5m b\u1ea9n, c\u1ea5m bong tr\u00f3c (chu\u1ed7i l\u1ea1nh, \u0111\u00f3ng g\u00f3i th\u1ef1c ph\u1ea9m), Inox 304 th\u01b0\u1eddng l\u00e0 b\u1eaft bu\u1ed9c v\u00e0 gi\u1ea3m r\u1ee7i ro d\u1eebng m\u00e1y do s\u01a1n bong.<\/p>\n<h3>K\u1ecbch b\u1ea3n B \u2013 Ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb C3 (H\u00e0 N\u1ed9i, xa bi\u1ec3n)<\/h3>\n<p>&#8211; Th\u00e9p s\u01a1n: CAPEX \u2248 1.20; s\u01a1n l\u1ea1i 5 n\u0103m\/l\u1ea7n, 30\u201340%\/l\u1ea7n. NPV 20 n\u0103m \u2248 1.65\u20131.90.<br \/>\n&#8211; HDG: CAPEX \u2248 1.45; ki\u1ec3m tra\/touch-up sau 12\u201315 n\u0103m, 5\u201310%. NPV \u2248 1.50\u20131.55.<br \/>\n&#8211; Inox 304: CAPEX \u2248 3.2\u20133.8; r\u1eeda 1\u20132 l\u1ea7n\/n\u0103m, 0.5%\/n\u0103m. NPV \u2248 3.30\u20133.95.<br \/>\n&#8211; Nh\u00f4m s\u01a1n\/ano\u0111i: CAPEX \u2248 2.8\u20133.2; b\u1ea3o tr\u00ec nh\u1eb9 8\u201310 n\u0103m. NPV \u2248 2.9\u20133.3.<br \/>\nK\u1ebft lu\u1eadn: HDG c\u00f3 LCC th\u1ea5p nh\u1ea5t cho k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi. Inox 304 d\u00f9ng khi y\u00eau c\u1ea7u th\u1ea9m m\u1ef9 cao, \u00edt b\u1ea3o tr\u00ec, ho\u1eb7c n\u01a1i s\u01a1n\/HDG kh\u00f3 thi c\u00f4ng (chi ti\u1ebft ph\u1ee9c t\u1ea1p, nhi\u1ec1u khe k\u1ebd).<\/p>\n<h3>K\u1ecbch b\u1ea3n C \u2013 Ven bi\u1ec3n C4\u2013C5 (H\u1ea3i Ph\u00f2ng, Qu\u1ea3ng Ninh, mi\u1ec1n Trung)<\/h3>\n<p>&#8211; Th\u00e9p s\u01a1n (h\u1ec7 duplex k\u1ebdm gi\u00e0u + epoxy + PU): CAPEX \u2248 1.35; s\u01a1n l\u1ea1i 4\u20136 n\u0103m, 40\u201360%\/l\u1ea7n. NPV 20 n\u0103m \u2248 1.9\u20132.3.<br \/>\n&#8211; HDG: CAPEX \u2248 1.55\u20131.60; b\u1ea3o tr\u00ec 8\u201312 n\u0103m, 15\u201330% t\u00f9y C4\/C5. NPV 20 n\u0103m \u2248 1.7\u20131.9.<br \/>\n&#8211; Inox 304: nguy c\u01a1 r\u1ed7\/\u0103n k\u1ebd h\u1edf; th\u01b0\u1eddng ph\u00e1t sinh \u0111\u00e1nh b\u00f3ng, th\u1ee5 \u0111\u1ed9ng h\u00f3a, th\u1eadm ch\u00ed thay th\u1ebf b\u1ed9 ph\u1eadn sau 8\u201312 n\u0103m. LCC t\u0103ng m\u1ea1nh, r\u1ee7i ro cao.<br \/>\n&#8211; Inox 316\/316L: CAPEX \u2248 4.8\u20135.2; v\u1ec7 sinh 1%\/n\u0103m. NPV 20 n\u0103m \u2248 4.9\u20135.6.<br \/>\nK\u1ebft lu\u1eadn: v\u1ec1 chi ph\u00ed thu\u1ea7n, HDG th\u01b0\u1eddng th\u1ea5p nh\u1ea5t cho k\u1ebft c\u1ea5u chung. Nh\u01b0ng v\u1edbi thi\u1ebft b\u1ecb v\u1ec7 sinh, b\u1ed3n\/\u0111\u01b0\u1eddng \u1ed1ng ti\u1ebfp x\u00fac n\u01b0\u1edbc m\u1eb7n, h\u00f3a ch\u1ea5t clorua, ho\u1eb7c y\u00eau c\u1ea7u \u201ckh\u00f4ng d\u1eebng m\u00e1y\u201d, 316L cho r\u1ee7i ro th\u1ea5p nh\u1ea5t v\u00e0 t\u1ed5ng chi ph\u00ed do d\u1eebng\/kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 khi\u1ebfn 316L kinh t\u1ebf h\u01a1n trong th\u1ef1c t\u1ebf.<\/p>\n<h2 id=\"toc-4-khi-nao-inox-re-hon-tren-vong-doi\">Khi n\u00e0o Inox \u201cr\u1ebb\u201d h\u01a1n tr\u00ean v\u00f2ng \u0111\u1eddi?<\/h2>\n<p>Inox c\u00f3 CAPEX cao nh\u01b0ng OPEX th\u1ea5p v\u00e0 r\u1ee7i ro th\u1ea5t b\u1ea1i v\u1eadt li\u1ec7u th\u1ea5p. C\u00e1c tr\u01b0\u1eddng h\u1ee3p sau th\u01b0\u1eddng cho \u0111i\u1ec3m h\u00f2a v\u1ed1n 6\u201310 n\u0103m so v\u1edbi th\u00e9p s\u01a1n\/HDG:<br \/>\n&#8211; Chi ph\u00ed d\u1eebng m\u00e1y l\u1edbn: m\u1ed7i l\u1ea7n s\u01a1n l\u1ea1i ph\u1ea3i ng\u1eebng d\u00e2y chuy\u1ec1n (th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c, \u0111i\u1ec7n t\u1eed), t\u1ed5n th\u1ea5t >15\u201325% CAPEX m\u1ed7i l\u1ea7n.<br \/>\n&#8211; Y\u00eau c\u1ea7u v\u1ec7 sinh\/kh\u00f4ng nhi\u1ec5m b\u1ea9n: s\u01a1n bong l\u00e0 kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c (khu s\u1ea1ch, b\u1ebfp c\u00f4ng nghi\u1ec7p).<br \/>\n&#8211; H\u00ecnh h\u1ecdc ph\u1ee9c t\u1ea1p: nhi\u1ec1u khe\/k\u1ef9 thu\u1eadt ph\u1ee7 kh\u00f3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y l\u1edbp s\u01a1n\/k\u1ebdm, nguy c\u01a1 \u0103n m\u00f2n k\u1ebd h\u1edf cao.<br \/>\n&#8211; Tu\u1ed5i th\u1ecd m\u1ee5c ti\u00eau >25 n\u0103m, khan hi\u1ebfm c\u01a1 h\u1ed9i b\u1ea3o tr\u00ec (h\u1ea1ng m\u1ee5c tr\u00ean cao, khu v\u1ef1c nguy hi\u1ec3m).<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t\/ nhi\u1ec7t \u0111\u1ed9: s\u01a1n l\u00e3o h\u00f3a nhanh, HDG b\u1ecb t\u1ea5n c\u00f4ng b\u1edfi axit\/ki\u1ec1m; Inox \u1ed5n \u0111\u1ecbnh h\u01a1n (ch\u1ecdn m\u00e1c \u0111\u00fang).<\/p>\n<h2 id=\"toc-5-chi-phi-bao-tri-dien-hinh-theo-vat-lieu\">Chi ph\u00ed b\u1ea3o tr\u00ec \u0111i\u1ec3n h\u00ecnh theo v\u1eadt li\u1ec7u<\/h2>\n<p>&#8211; Inox 201\/304\/316:<br \/>\n  &#8211; V\u1ec7 sinh: 1\u20134 l\u1ea7n\/n\u0103m t\u00f9y m\u00f4i tr\u01b0\u1eddng; chi ph\u00ed 0.3\u20131% CAPEX\/n\u0103m.<br \/>\n  &#8211; Y\u00eau c\u1ea7u: tr\u00e1nh clo\/ch\u1ea5t t\u1ea9y ch\u1ee9a chloride \u0111\u1eadm \u0111\u1eb7c; th\u1ee5 \u0111\u1ed9ng h\u00f3a v\u00f9ng h\u00e0n; tr\u00e1nh khe k\u1ebd \u0111\u1ecdng mu\u1ed1i.<br \/>\n&#8211; Th\u00e9p s\u01a1n:<br \/>\n  &#8211; Ki\u1ec3m tra h\u00e0ng n\u0103m; spot-repair ngay khi s\u01a1n n\u1ee9t\/bong.<br \/>\n  &#8211; S\u01a1n l\u1ea1i \u0111\u00fang chu k\u1ef3; chi ph\u00ed 25\u201360% CAPEX\/l\u1ea7n (bao g\u1ed3m che ch\u1eafn, l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t \u0111\u1ea1t Sa2.5).<br \/>\n&#8211; HDG:<br \/>\n  &#8211; Ki\u1ec3m tra 1\u20132 n\u0103m\/l\u1ea7n; s\u01a1n k\u1ebdm l\u1ea1nh\/touch-up v\u00f9ng tr\u1ea7y.<br \/>\n  &#8211; C4\u2013C5 c\u00f3 th\u1ec3 c\u1ea7n ph\u1ee5c h\u1ed3i h\u1ec7 s\u01a1n b\u1ea3o v\u1ec7 b\u1ed5 sung sau 8\u201312 n\u0103m.<br \/>\n&#8211; Nh\u00f4m:<br \/>\n  &#8211; R\u1eeda s\u1ea1ch mu\u1ed1i; n\u1ebfu s\u01a1n\/ano\u0111i, ki\u1ec3m tra ph\u1ea5n h\u00f3a v\u00e0 s\u01a1n l\u1ea1i 8\u201312 n\u0103m\/l\u1ea7n \u1edf C3, ng\u1eafn h\u01a1n \u1edf C4\u2013C5.<\/p>\n<h2 id=\"toc-6-rui-ro-ky-thuat-lam-doi-opex\">R\u1ee7i ro k\u1ef9 thu\u1eadt l\u00e0m \u0111\u1ed9i OPEX<\/h2>\n<p>&#8211; Ch\u1ecdn sai m\u00e1c Inox: d\u00f9ng 201\/430 ngo\u00e0i tr\u1eddi \u1ea9m m\u1eb7n g\u00e2y r\u1ec9 n\u00e2u, t\u1ed1n l\u00e0m s\u1ea1ch\/l\u00e0m m\u1edbi. 304 \u1edf C4\u2013C5 d\u1ec5 r\u1ed7.<br \/>\n&#8211; Kh\u00f4ng th\u1ee5 \u0111\u1ed9ng h\u00f3a m\u1ed1i h\u00e0n Inox: v\u00f9ng nhi\u1ec7t b\u1ecb ho\u1ea1t h\u00f3a, r\u1ec9 s\u1edbm, ph\u00e1t sinh \u0111\u00e1nh b\u00f3ng\/axit passivation l\u1ea1i.<br \/>\n&#8211; S\u01a1n tr\u00ean b\u1ec1 m\u1eb7t b\u1ea9n\/\u0111\u1ed9 \u1ea9m cao: bong s\u1edbm, chu k\u1ef3 b\u1ea3o tr\u00ec r\u00fat ng\u1eafn m\u1ed9t n\u1eeda.<br \/>\n&#8211; Galvanic corrosion: l\u1eafp Inox v\u1edbi th\u00e9p\/nh\u00f4m m\u00e0 kh\u00f4ng c\u00e1ch \u0111i\u1ec7n trong m\u00f4i tr\u01b0\u1eddng \u1ea9m m\u1eb7n, chi ti\u1ebft \u201cth\u1ea5p th\u1ebf\u201d b\u1ecb \u0103n m\u00f2n nhanh.<br \/>\n&#8211; Thi\u1ebft k\u1ebf gi\u1eef n\u01b0\u1edbc \u0111\u1ecdng\/khe k\u1ebd: m\u1ecdi v\u1eadt li\u1ec7u \u0111\u1ec1u t\u0103ng t\u1ed1c \u0103n m\u00f2n n\u1ebfu b\u1eaby \u1ea9m\/mu\u1ed1i.<\/p>\n<h2 id=\"toc-7-lua-chon-theo-ung-dung-pho-bien-tai-viet-nam\">L\u1ef1a ch\u1ecdn theo \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>&#8211; K\u1ebft c\u1ea5u nh\u00e0 x\u01b0\u1edfng ngo\u00e0i tr\u1eddi n\u1ed9i \u0111\u1ecba (C3): HDG kinh t\u1ebf nh\u1ea5t; th\u00eam s\u01a1n n\u1ebfu y\u00eau c\u1ea7u m\u00e0u\/th\u1ea9m m\u1ef9 (h\u1ec7 duplex).<br \/>\n&#8211; Lan can, m\u1eb7t d\u1ef1ng \u0111\u00f4 th\u1ecb: Inox 304 No.4\/HL cho th\u1ea9m m\u1ef9 b\u1ec1n; ho\u1eb7c nh\u00f4m s\u01a1n t\u0129nh \u0111i\u1ec7n n\u1ebfu \u01b0u ti\u00ean nh\u1eb9.<br \/>\n&#8211; Ven bi\u1ec3n\/C5:<br \/>\n  &#8211; K\u1ebft c\u1ea5u: HDG + b\u1ea3o tr\u00ec theo chu k\u1ef3; c\u00e2n nh\u1eafc duplex k\u1ebdm + s\u01a1n cao c\u1ea5p.<br \/>\n  &#8211; Thi\u1ebft b\u1ecb, b\u1ed3n\/\u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc bi\u1ec3n, khu r\u1eeda clo: Inox 316\/316L.<br \/>\n&#8211; Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m\/d\u01b0\u1ee3c: Inox 304\/316 l\u00e0 ti\u00eau chu\u1ea9n v\u00ec v\u1ec7 sinh v\u00e0 tr\u00e1nh bong tr\u00f3c; LCC th\u1ea5p khi t\u00ednh d\u1eebng m\u00e1y.<br \/>\n&#8211; \u1ed0ng gi\u00f3\/HVAC: nh\u00f4m ho\u1eb7c t\u00f4n m\u1ea1 k\u1ebdm; g\u1ea7n bi\u1ec3n c\u00e2n nh\u1eafc Inox 304 cho \u0111\u1ed9 b\u1ec1n l\u00e2u.<br \/>\n&#8211; B\u1ebfp c\u00f4ng nghi\u1ec7p, tay v\u1ecbn trong nh\u00e0: Inox 304; khu \u1ea9m\/h\u1ed3 b\u01a1i\/ven bi\u1ec3n: 316.<\/p>\n<h2 id=\"toc-8-cach-tu-tinh-nhanh-lcc-cho-du-an-cua-ban\">C\u00e1ch t\u1ef1 t\u00ednh nhanh LCC cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n<\/h2>\n<p>&#8211; B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng (C2\u2013C5), tu\u1ed5i th\u1ecd m\u1ee5c ti\u00eau, chi ph\u00ed d\u1eebng m\u00e1y\/l\u1ea7n.<br \/>\n&#8211; B\u01b0\u1edbc 2: L\u1eadp c\u00e1c ph\u01b0\u01a1ng \u00e1n v\u1eadt li\u1ec7u v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (m\u00e1c Inox, \u0111\u1ed9 d\u00e0y k\u1ebdm, h\u1ec7 s\u01a1n).<br \/>\n&#8211; B\u01b0\u1edbc 3: \u01af\u1edbc t\u00ednh CAPEX t\u1eebng ph\u01b0\u01a1ng \u00e1n (v\u1eadt t\u01b0 + gia c\u00f4ng + l\u1eafp \u0111\u1eb7t).<br \/>\n&#8211; B\u01b0\u1edbc 4: X\u00e2y d\u1ef1ng l\u1ecbch b\u1ea3o tr\u00ec th\u1ef1c t\u1ebf theo m\u00f4i tr\u01b0\u1eddng:<br \/>\n  &#8211; S\u01a1n: chu k\u1ef3 4\u201310 n\u0103m; chi ph\u00ed 25\u201360% CAPEX\/l\u1ea7n.<br \/>\n  &#8211; HDG: ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3; ph\u1ee5c h\u1ed3i 5\u201330% t\u00f9y m\u00f4i tr\u01b0\u1eddng.<br \/>\n  &#8211; Inox: v\u1ec7 sinh 0.3\u20131%\/n\u0103m; v\u1edbi 304 \u1edf C4 c\u00f3 th\u1ec3 c\u1ea7n passivation \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; B\u01b0\u1edbc 5: T\u00ednh NPV OPEX v\u1edbi i = 10%; LCC = CAPEX + NPV(OPEX).<br \/>\n&#8211; B\u01b0\u1edbc 6: Th\u00eam chi ph\u00ed r\u1ee7i ro (kh\u1ea3 n\u0103ng h\u1ecfng s\u1edbm, an to\u00e0n, ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m) \u0111\u1ec3 c\u00f3 b\u1ee9c tranh \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<h2 id=\"toc-9-tieu-chuan-va-thong-so-ky-thuat-nen-ghi-ro\">Ti\u00eau chu\u1ea9n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00ean ghi r\u00f5<\/h2>\n<p>&#8211; Inox: ASTM A240 (t\u1ea5m\/cu\u1ed9n), A312 (\u1ed1ng), ghi m\u00e1c 201\/304\/316L, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (2B, No.4, BA), y\u00eau c\u1ea7u th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n.<br \/>\n&#8211; HDG: ASTM A123\/A153, quy \u0111\u1ecbnh kh\u1ed1i l\u01b0\u1ee3ng k\u1ebdm t\u1ed1i thi\u1ec3u v\u00e0 ki\u1ec3m tra \u0111\u1ed9 d\u00e0y.<br \/>\n&#8211; S\u01a1n: h\u1ec7 s\u01a1n, \u0111\u1ed9 d\u00e0y kh\u00f4 (DFT), chu\u1ea9n chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t (ISO 8501-1 Sa 2.5), nghi\u1ec7m thu b\u00e1m d\u00ednh.<br \/>\n&#8211; Nh\u00f4m: h\u1ee3p kim (5xxx\/6xxx), x\u1eed l\u00fd b\u1ec1 m\u1eb7t (anodize\/s\u01a1n t\u0129nh \u0111i\u1ec7n), \u0111\u1ed9 d\u00e0y l\u1edbp b\u1ea3o v\u1ec7.<\/p>\n<h2 id=\"toc-10-ket-luan-chon-vat-lieu-theo-vong-doi-khong-chi-the\">K\u1ebft lu\u1eadn: ch\u1ecdn v\u1eadt li\u1ec7u theo v\u00f2ng \u0111\u1eddi, kh\u00f4ng ch\u1ec9 theo gi\u00e1 mua<\/h2>\n<p>&#8211; \u1ede m\u00f4i tr\u01b0\u1eddng C2\u2013C3, n\u1ebfu m\u1ee5c ti\u00eau t\u1ed1i thi\u1ec3u h\u00f3a chi ph\u00ed thu\u1ea7n, HDG th\u01b0\u1eddng c\u00f3 LCC th\u1ea5p nh\u1ea5t; th\u00e9p s\u01a1n c\u00f3 th\u1ec3 c\u1ea1nh tranh nh\u01b0ng \u0111\u00f2i h\u1ecfi k\u1ef7 lu\u1eadt b\u1ea3o tr\u00ec nghi\u00eam ng\u1eb7t.<br \/>\n&#8211; Inox 304\/316 c\u00f3 CAPEX cao, nh\u01b0ng tr\u1edf n\u00ean \u201cr\u1ebb\u201d h\u01a1n tr\u00ean v\u00f2ng \u0111\u1eddi khi: c\u1ea7n v\u1ec7 sinh cao, kh\u00f4ng ch\u1ea5p nh\u1eadn bong tr\u00f3c, chi ph\u00ed d\u1eebng m\u00e1y l\u1edbn, h\u00ecnh h\u1ecdc kh\u00f3 ph\u1ee7, ho\u1eb7c y\u00eau c\u1ea7u tu\u1ed5i th\u1ecd >25 n\u0103m v\u1edbi r\u1ee7i ro th\u1ea5p.<br \/>\n&#8211; \u1ede C4\u2013C5, 304 kh\u00f4ng ph\u00f9 h\u1ee3p; l\u1ef1a ch\u1ecdn th\u1ef1c t\u1ebf l\u00e0 HDG v\u1edbi k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec r\u00f5 r\u00e0ng ho\u1eb7c Inox 316\/316L cho h\u1ea1ng m\u1ee5c quan tr\u1ecdng\/ti\u1ebfp x\u00fac clorua.<br \/>\n&#8211; Quy\u1ebft \u0111\u1ecbnh t\u1ed1t nh\u1ea5t lu\u00f4n d\u1ef1a tr\u00ean LCC 10\u201320 n\u0103m c\u00f3 x\u00e9t chi ph\u00ed d\u1eebng m\u00e1y v\u00e0 r\u1ee7i ro. T\u00ednh \u0111\u00fang k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng s\u1ebd cho b\u1ea1n \u0111\u00e1p \u00e1n kinh t\u1ebf t\u1ed1i \u01b0u, thay v\u00ec ch\u1ec9 nh\u00ecn gi\u00e1 ban \u0111\u1ea7u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh chi ph\u00ed \u0111\u1ea7u t\u01b0 v\u00e0 b\u1ea3o tr\u00ec: khi n\u00e0o Inox r\u1ebb h\u01a1n th\u00e9p s\u01a1n, m\u1ea1 k\u1ebdm hay nh\u00f4m? Ph\u00e2n t\u00edch LCC 10\u201320 n\u0103m, k\u1ecbch b\u1ea3n theo m\u00f4i tr\u01b0\u1eddng v\u00e0 g\u1ee3i \u00fd ch\u1ecdn v\u1eadt li\u1ec7u.<\/p>\n","protected":false},"author":7,"featured_media":1072,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1176","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=1176"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1176\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1072"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}