Tiêu chuẩn Việt Nam- Qui phạm phân cấp và đóng tàu biển vỏ thép- Phần 8: Tàu chở xô khí hóa lỏng ppsx

tiu chuán viẻt nam tcvn 6259 -8d : 2003 qui phm phàn cảp vĂ ẵĩng tĂu bièn vị thắp PhÃn 8D t¡u chê xá khÏ hÜa lÞng Rules for the Classification and Construction of Sea-going Steel Ships Part 8D Ships Carrying Liquefied Gas in Bulk chừỗng Qui ẵnh chung 1.1 Qui ½Ùnh chung 1.1.1 Ph−m vi Ÿp dịng (Theo IGC Code 1.1.1, 1.1.5 v¡ 1.1.7) CŸc yÅu c·u Ph·n n¡y Ÿp dòng cho t¡u chê xá khÏ hĩa lịng ẵừỡc ẵng kỷ vĂ mang cảp ca ng kièm (tữ sau ẵày PhÃn nĂy gi tt lĂ TĂu) Thut ngự "Khẽ hĩa lịng" chì khẽ cĩ p suảt hỗi tuyẻt ẵõi vừỡt qu 0,28 MPa nhiẻt ẵổ 37,8oC vĂ cc săn phám d chy từỗng tỳ khc ẵừỡc nu Băng 8D/19.1 õi vối tĂu cĩ vùng hot ẵổng hn chặ vĂ tĂu khỏng tỳ h¡nh, cŸc u c·u cða Ph·n n¡y cÜ thÌ ½õìc thay ẵọi thẽch hỡp õi vối thàn tĂu, my mĩc, thiặt b qui ẵnh PhÃn nĂy thệ cc yu cÃu PhÃn nĂy phăi ẵừỡc ừu tin p dòng so vèi cŸc yÅu c·u ê cŸc ph·n khŸc Nặu tĂu dùng ẵè chờ hồn hỡp cc săn phám ẵừỡc nu PhÃn nĂy vĂ cc săn phám ẵừỡc nu PhÃn 8E hoc từỗng ẵừỗng thệ tĂu phăi thịa mơn cc yu cÃu ca că hai phÃn tùy theo loi săn phám chuyn chờ, trữ cc trừộng hỡp nu (1) vĂ (2) sau ẵày : (1) Nặu cc yu cÃu ca PhÃn nĂy ẵừỡc ừu tin tĂu ẵừỡc thiặt kặ vĂ ẵĩng ẵè chuyn chờ cc hĂng nu (a) vĂ (b) dừối ẵày : (a) Cc hĂng ẵừỡc liẻt k ring Băng 8D/19.1 ca PhÃn nĂy ; (b) Mổt hoc nhiậu săn phám ẵừỡc liẻt k că PhÃn nĂy vĂ PhÃn 8E (cc săn phám ẵừỡc ẵnh dảu (*) cổt a, Băng 8D/19.1) (2) Nặu cc yu cÃu ca Ph·n 8E ½õìc Ÿp dịng t¡u dïng riÅng ½Ì chờ mổt hoc nhiậu săn phám nu (1)(b) trn ẵày 1.1.2 Thay thặ từỗng ẵừỗng Kặt cảu, trang thiặt b ,v.v , khỏng p dũng cc qui ẵnh ca PhÃn nĂy nhừng ẵừỡc xem lĂ từỗng ẵừỗng vối u c·u ê Ph·n n¡y sÁ ½õìc ‡¯ng kiÌm xem xắt chảp nhn 1.1.3 Cc lut quõc gia ng kièm cĩ thè ẵừa cc qui ẵnh ẵc biẻt phù hỡp vối cc chì dạn ca cc chẽnh ph mĂ t¡u treo cé ho´c chÏnh phð cða quâc gia cÜ chð qun m¡ t¡u ho−t ½ỉng 1.1.4 Nguy hiÌm (Theo IGC 1.2) CŸc tÏnh ch¶t nguy hiÌm cða cŸc khÏ ½õìc nÅu Ph·n n¡y gãm : ChŸy, ½ỉc h−i, n mín, d phăn ửng, nhiẻt ẵổ vĂ p suảt thảp tcvn 6259 -8d : 2003, Chừỗng1 1.1.5 Cc ½Ùnh nghØa (Theo IGC Code 1.3) NỈu kháng cÜ qui ½Ùnh n¡o khŸc, Ph·n n¡y Ÿp dòng cŸc ½Ùnh nghỉa sau : (1) (2) (3) (4) (5) Kặt cảu cảp A lĂ kặt cảu ẵừỡc qui ẵnh 3.2.2 Ph·n “ChÏnh quyËn h¡nh chÏnh” l¡ chÏnh phð cða quõc gia mĂ tĂu mang cộ Chẽnh quyận căng lĂ chẽnh quyận hỡp php ca quõc gia ti căng mĂ tĂu vĂo lĂm hĂng Nhiẻt ẵổ sỏi lĂ nhiẻt ẵổ mĂ ti ẵĩ săn phám cĩ p suảt hỗi bng Ÿp su¶t khÏ qun “Khu vúc h¡ng hÜa” l¡ khu vỳc cĩ hẻ thõng chửa hĂng, bỗm hĂng vĂ buóng my nắn hĂng ca tĂu kè că phÃn boong trn to¡n bæ chiËu d¡i v¡ chiËu ræng cða khu vúc nÅu trÅn cða t¡u NỈu cÜ cŸc khoang cŸch ly, cŸc khoang d±n ho´c khoang trâng ê phÏa sau cða khoang h¡ng tºn cïng phÏa lŸi ho´c ê phÏa trõèc cða khoang h¡ng tºn cïng phÏa mđi thƯ cŸc khoang n¡y kháng thc khu vúc h¡ng hÜa (6) “HỴ thâng ngn hĂng lĂ hẻ thõng dùng ẵè ngn hĂng bao góm : Mổt vch chn sỗ cảp vĂ thử cảp, nặu cĩ, ẵừỡc bc cch nhiẻt, cc khoang bn vĂ kặt cảu kậ cn, nặu cÃn ẵè ẵở cc bổ phn nĂy Nặu vch chn thử cảp lĂ mổt phÃn ca kặt cảu thàn tĂu thệ vch nĂy cĩ thÌ l¡ vŸch biÅn cða khoang chưa (7) “Bng kiÌm sot hĂng lĂ buóng dùng ẵè kièm sot hĂng thịa m¬n cŸc yÅu c·u cða 3.4 (8) “H¡ng” l¡ cŸc săn phám liẻt k Băng 8D/19.1 ẵừỡc chờ xỏ b±ng cŸc t¡u theo cŸc yÅu c·u cða Ph·n n¡y (9) “Khoang phòc vò h¡ng” l¡ khoang n±m khu vúc h¡ng hÜa dïng l¡m cŸc xõêng, cŸc buãng chöa vĂ kho chửa cĩ diẻn tẽch lốn hỗn m2 ẵè cảt giự cc trang thiặt b lĂm hĂng (10) Kắt hĂng lĂ kắt kẽn chửa chảt lịng ẵừỡc thiặt kặ thĂnh thùng chửa hĂng sỗ cảp vĂ nĩ bao góm tảt că cc thùng chửa ẵừỡc hoc khỏng ẵừỡc bc cch nhiẻt hoc cĩ vch chn thử cảp hoc că hai (11) Khoang cch ly lĂ khoang nm giựa hai vŸch ng¯n ho´c boong th¾p kË cºn Khoang n¡y cÜ thÌ l¡ khoang trâng ho´c khoang d±n (12) “Tr−m ½iËu khiÌn” l¡ tr−m ½õìc qui ½Ùnh nhõ ê 3.2.18 PhÃn Trm nĂy khỏng bao góm buóng ẵt thiặt b ẵiậu khièn chựa chy ẵc biẻt, thỳc tặ thiặt bÙ ½iËu khiÌn chùa chŸy cÜ thÌ ½õìc ½´t khu vỳc hĂng hĩa (13) Săn phám d chy lĂ cc săn phám kỷ hiẻu bng chự F cổt f Băng 8D/19.1 (14) Giối hn chy lĂ ẵiậu kiẻn xc ẵnh trng thi ca hồn hỡp nhin liẻu-chảt xy hÜa m¡ mæt nguãn phŸt løa tr·n ẵ mnh cĩ khă nng gày chy mổt thiặt bÙ thø nghiỴm (15) “Khoang ho´c vïng nguy hiÌm vË khÏ ” l¡ khoang ho´c vïng nhõ ½õìc nÅu ê tữ (a) ẵặn (l) dừối ẵày : (a) Khoang khu vúc h¡ng hÜa kháng ½õìc bâ trÏ ho´c trang b mửc ẵừỡc chảp nhn ẵè ẵăm băo rng kháng khÏ ê ½Ü ln ln ½õìc trƯ ê ½iËu kiỴn an to¡n vË khÏ (b) Khoang kÏn bÅn ngoĂi khu vỳc hĂng hĩa cĩ ẵừộng õng dạn săn phám dng lịng hoc khẽ ẵi qua, hoc ẵừộng õng dạn săn phám dng lịng hoc khẽ kặt thợc ẵĩ, trữ trừộng hỡp khoang nĂy ẵừỡc lp cc thiặt b cĩ kièu ẵừỡc duyẻt ẵè ngn ngữa sỳ rí lt hỗi ca săn phám vĂo khỏng gian ca khoang (c) Hẻ thõng ngn hĂng vĂ ẵừộng õng dạn hĂng (d) (i) Khoang h¡ng m¡ ê ½Ü h¡ng ½õìc chun chê mỉt hỴ thâng ng¯n h¡ng u c·u mỉt vch chn thử cảp (ii) Khoang hĂng mĂ ẵĩ hĂng ẵừỡc chuyn chờ mổt hẻ thõng ngn hĂng kháng u c·u mỉt vŸch ch°n thư c¶p (e) Khoang cch biẻt vối khoang hĂng ẵừỡc nu (d) (i) trn ẵày chì bng mổt vch bin bng thắp kẽn khẽ (f) Buóng bỗm hĂng vĂ buóng my nắn hĂng (g) Vïng trÅn boong ho´c khoang nøa kÏn trÅn boong hờ phm vi mắt kè tữ bảt kü cøa n¡o cða k¾t h¡ng, cøa thoŸt khÏ hoc hỗi, bẽch ca õng dạn hĂng, van hĂng ; ho´c cða cŸc lâi v¡o v¡ cŸc lå tháng giÜ tối cc buóng bỗm vĂ cc buóng my nắn hĂng (h) Boong phÏa trÅn khu vúc h¡ng hÜa, m¾t phÏa trõèc v¡ sau cða khu vúc h¡ng hÜa trn boong hờ ln ẵặn chiậu cao 2,4 mắt phẽa trÅn boong théi tiỈt (i) Vïng ph−m vi 2,4 mắt kè tữ mt ngoĂi ca hẻ thõng ngn hĂng nỗi mĂ bậ mt nĂy lổ ngoĂi thội tiặt 10 tcvn 6259 -8d : 2003, Chừỗng1 (j) Khoang kẽn hoc nứa kẽn cĩ ẵt ẵừộng õng dạn cc săn phám Khoang ẵt thiặt b pht hiẻn khẽ thịa mơn yu cÃu 13.6.5, khoang tn dũng khẽ thăi lĂm nhin liẻu vĂ khoang qui ẵnh Chừỗng 16 khỏng ½õìc xem l¡ cŸc khoang nguy hiÌm vË khÏ mũc nĂy (k) Khoang ẵè cc õng mậm dạn hĂng (l) Khoang kÏn ho´c nøa kÏn cÜ mæt cøa mê trỳc tiặp bảt kỹ khoang hoc vùng nĂo qui ẵnh tữ (a) ẵặn (k) (16) Khoang an toĂn vậ khẽ lĂ khoang khỏng phăi lĂ khoang nguy hiÌm vË khÏ (17) “Khoang h¡ng” l¡ mỉt khoang ½õìc bao bc bời kặt cảu tĂu mĂ ẵĩ cĩ ½´t hỴ thâng ng¯n h¡ng (18) “‡ỉc lºp” cÜ nghØa lĂ hẻ thõng ẵừộng õng hoc hẻ thõng thỏng hỗi ch²ng h−n, tut nhiÅn kháng nâi vèi hỴ thâng khŸc vĂ khỏng cĩ cc phũ kiẻn ẵè nõi vối cc hẻ thõng khc (19) Khoang cch nhiẻt ẵè chì khoang cĩ hoc khỏng cĩ vch chn, ẵừỡc bc cch nhiẻt to¡n bæ ho´c mæt ph·n (20) “Khoang cÜ vŸch ch°n” ẵè chì khoang nm bn vch chn sỗ cảp vĂ vch chn thử cảp ẵừỡc bc cch nhiẻt hoc bàc b±ng vºt liỴu khŸc ho¡n to¡n ho´c mỉt ph·n (21) MARVS lĂ sỳ ẵiậu chình van an toĂn v trẽ cho phắp lốn nhảt ca kắt hĂng (22) Thiặt b nhin liẻu lĂ thiặt b nhừ ẵừỡc nu ê 3.2.34 Ph·n (23) “HỴ sâ ngºp thÌ tÏch khoang lĂ tý sõ bng thè tẽch ngp nừốc giă ½Ùnh khoang chia cho thÌ tÏch to¡n bỉ cða khoang (24) Vch chn sỗ cảp lĂ bổ phn phẽa ẵừỡc thiặt kặ ẵè ngn hĂng hẻ thõng ng¯n h¡ng gãm hai vŸch ch°n (25) “VŸch ch°n thö cảp lĂ bổ phn chu chảt lịng phẽa ngoĂi ca hẻ thõng ngn hĂng ẵừỡc thiặt kặ ẵè lừu giự tm thội hĂng lịng rí lt qua vch chn sỗ cảp vĂ ẵè trnh h thảp nhiẻt ẵổ ca kặt cảu tĂu tối nhiẻt ẵổ khỏng an toĂn Cc kièu vch chn thử cảp ẵừỡc qui ẵnh chi tiặt hỗn Chừỗng (26) Tý trng từỗng ẵõi lĂ tý sõ khõi lừỡng ca mổt thè tẽch ca săn phám chia cho khõi lừỡng ca mổt thè tẽch từỗng ưng cða nõèc ngàt (27) “TŸch biỴt” nghØa l¡ mỉt hẻ thõng ẵừộng õng dạn hĂng hoc hẻ thõng thỏng hỗi hĂng, chng hn, khỏng ẵừỡc nõi vối hẻ thõng õng dạn hĂng hoc hẻ thõng thỏng hỗi hĂng khc Cĩ thè ẵt ẵừỡc sỳ tch biẻt nĂy bng biẻn php thiặt kặ hoc biẻn php hĂnh Biẻn php hĂnh khỏng ẵừỡc dùng phm vi mổt kắt hĂng vĂ phăi bao góm mổt cc dng sau : (a) ThŸo réi cŸc âng cuæn ho´c van v¡ bt kẽn cc ẵÃu õng (b) Bõ trẽ nõi tiặp hai bẽch kắp km theo thiặt b pht hiẻn rí lt vĂo õng giựa hai bẽch ẵĩ (28) Np kắt lĂ kặt cảu ẵè băo vẻ trnh hịng ca hỴ thâng ng¯n h¡ng hỴ thâng ng¯n h¡ng nhá ln trn boong thội tiặt hoc ẵè băo ẵăm tẽnh lin tũc vĂ sỳ nguyn ca kặt cảu boong (29) “VÝm k¾t” l¡ sú mê rỉng lÅn phÏa trÅn ca mổt phÃn kắt hĂng Trong trừộng hỡp cc hẻ thâng ng¯n h¡ng ê boong dõèi cÜ vÝm k¾t nhá ln phẽa trn boong thội tiặt hoc qua np kắt (30) Săn phám ẵổc hi ẵè chì cc săn phám kỷ hiẻu bng chự T cổt f, Băng 8D/19.1 (31) p suảt hỗi lĂ p suảt càn bng ca hỗi bơo hía trn mt chảt lịng bièu th bng bar tuyẻt ẵõi nhiẻt ẵổ xc ẵnh (32) Khoang trõng lĂ khoang kẽn khỏng phăi lĂ khoang hĂng, khoang dn, kắt dÃu ẵõt, buóng bỗm hĂng hoc my nắn hoc bảt kỹ khoang nĂo thỏng thừộng thuyận viÅn sø dòng, n±m khu vúc h¡ng hÜa phÏa ngo¡i hỴ thâng chưa h¡ng (33) “IGC Code” l¡ “Luºt quõc tặ ẵõi vối kặt cảu vĂ trang thiặt b cc tĂu chờ khẽ hĩa lịng 1.2 iậu kiẻn h¡nh 1.2.1 Ph−m vi Ÿp dịng CŸc qui ½Ùnh ê 1.2 khỏng phăi lĂ cc ẵiậu kiẻn ẵè kièm tra trệ cảp mĂ lĂ cc ẵiậu kiẻn bt buổc ½âi vèi chð t¡u, thuyËn trõêng ho´c nhùng ngõéi cÜ lin quan ẵặn hĂnh tĂu 1.2.2 Hn chặ np h¡ng dÍ chŸy (Theo IGC Code 1.1.4) 11 tcvn 6259 -8d : 2003, Chừỗng1 Nặu cc kắt hĂng chửa cc săn phám PhÃn nĂy yu cÃu phăi lĂ tĂu loi 1G thệ că chảt lịng cĩ nhiẻt ẵổ bt chy bng hoc nhị hỗn 60oC (thứ cõc kẽn) vĂ cc săn phám d chy nu Chừỗng 19 ½Ëu kháng ½õìc chê cŸc k¾t n±m vïng băo vẻ nu 2.6.1 (1) Từỗng tỳ, nặu cc kắt hĂng chửa cc săn phám PhÃn nĂy yu cÃu phăi lĂ tĂu loi 2G/2PG thệ cc chảt lịng d chy nu trn phăi khỏng ẵừỡc chờ cc kắt ẵt vùng băo vẻ qui ẵnh 2.6.1 (2) Trong t÷ng trõéng hìp sÁ cÜ h−n chặ sứ dũng vùng băo vẻ nm phm vi theo chiËu d¡i cða cŸc khoang h¡ng ½âi vèi cŸc kắt hĂng chửa cc săn phám mĂ PhÃn nĂy yu cÃu phăi lĂ tĂu dng 1G hoc 2G/2PG Cc chảt lịng vĂ săn phám d chy nu trn cĩ thè ẵừỡc chửa cc vùng băo vẻ nĂy lừỡng săn phám chửa cc kắt hĂng mĂ Chừỗng nĂy yu cÃu phăi lĂ tĂu loi 1G hoc 2G/PG chì dùng ẵè lĂm mt, tuÃn hoĂn hoc nhin liẻu 12 tcvn 6259 -8D : 2003, Chừỗng Chừỗng Khă nng chõng chệm ca tĂu vĂ v trẽ cc kắt hĂng 2.1 Quy ẵnh chung (IGC Code 2.1) 2.1.1 Quy ẵnh chung TĂu phăi khỏng b chệm ngp nừốc thàn tĂu b thng giă ẵnh tc dũng ca ngoi lỳc NgoĂi ra, ẵè ẵăm băo an toĂn cho tĂu vĂ mỏi trừộng, cc kắt hĂng phăi ẵừỡc băo vẻ trnh rí lt trừộng hìp t¡u cÜ lå thðng nhÞ, vÏ dị, ch−m vối cÃu tĂu hoc tĂu kắo vĂ phăi cĩ biẻn php băo vẻ chõng thng trừộng hỡp va chm hoc mc cn bng cch ẵt cc kắt hĂng cch tỏn bao mổt khoăng cch tõi thièu theo quy ẵnh Cc lồ thng giă ẵnh vĂ khoăng cch tữ cc kắt hĂng tối tỏn bao ca tĂu phăi ẵừỡc lảy tùy theo mửc ẵổ nguy hièm ca săn phám ẵừỡc chuyn chờ 2.1.2 Loi tĂu TĂu phăi ẵừỡc thiặt kặ theo mỉt cŸc tiÅu chu¸n sau : (1) T¡u lo−i 1G l¡ t¡u chê khÏ dïng ½Ì vºn chun cc săn phám nu Chừỗng 19, yu cÃu phăi cĩ cc phừỗng tiẻn băo vẻ tõi ẵa ẵè trnh h¡ng hÜa thoŸt (2) T¡u lo−i 2G l¡ t¡u chờ khẽ dùng ẵè chuyèn cc săn phám nu Chừỗng 19, yu cÃu phăi cĩ cc phừỗng tiẻn băo vẻ hiẻu quă ẵè trnh hĂng hĩa thot (3) T¡u lo−i 2PG l¡ t¡u chê khÏ cÜ chiËu dĂi tữ 150 mắt trờ xuõng dùng ẵè chuyèn cc săn phám nu Chừỗng 19 yu cÃu phăi cĩ cc cc phừỗng tiẻn băo vẻ hiẻu quă ẵè trnh hĂng hĩa thot vĂ nặu cc săn phám ½õìc chun chê cŸc k¾t ½ỉc lºp lo−i C ẵừỡc thiặt kặ (xem 4.2.4-4) cĩ MARVS p suảt ẽt nhảt lĂ 0,7 MPa vĂ nhiẻt ẵổ tẽnh ton ca hẻ thõng ngn hĂng tữ -55oC trờ ln Lừu û r±ng mỉt t¡u theo qui ½Ùnh n¡y nhõng d¡i trn 150 mắt phăi ẵừỡc coi lĂ tĂu loi 2G (4) T¡u lo−i 3G l¡ t¡u chê khÏ dïng ½Ì chuyèn cc săn phám nu Chừỗng 19 yu cÃu phăi cĩ cc phừỗng tiẻn băo vẻ vữa phăi ½Ì ng¯n h¡ng hÜa thoŸt Nhõ vºy, t¡u lo−i 1G l¡ t¡u chê khÏ dïng ½Ì vºn chun cŸc săn phám ẵừỡc coi lĂ mửc ẵổ nguy hièm tọng cỉng lèn nh¶t v¡ cŸc t¡u lo−i 2G/2PG v¡ lo−i 3G dùng ẵè chuyèn cc săn phám cĩ mửc ½ỉ nguy hiÌm th¶p d·n VƯ vºy t¡u lo−i 1G phăi ẵừỡc thiặt kặ ẵè khỏng b chệm theo tiu chuán thng khc nghiẻt nhảt vĂ cc kắt hĂng ca nĩ phăi ẵừỡc ẵt cch tỏn bao mổt khoăng cch quy ẵnh lốn nhảt vĂo phẽa tĂu 2.1.3 Loi tĂu chờ mổt loi săn phám Loi tĂu quy ẵnh ẵè chờ mổt loi săn phám nu cổt c, Băng 8D/19.1 2.1.4 TĂu chờ nhiậu loi săn phám Nặu tĂu ẵừỡc dùng ẵè chờ nhiậu loi săn phám nu Băng 8D/19.1, thệ tiu chuán thng phăi lảy theo săn phám yu cÃu loi tĂu cao nhảt Tuy nhin cc yu cÃu ẵõi vối viẻc bõ trẽ cc kắt h¡ng riÅng lÀ l¡ yÅu c·u ½âi vèi lo−i t¡u cĩ lin quan ẵặn săn phám chuyn chờ từỗng ửng 2.2 D±n cưng v¡ tháng bŸo än ½Ùnh 2.2.1 D±n cöng (IGC Code 2.2.4) 13 tcvn 6259 -8D : 2003, Chừỗng Dn cửng thỏng thừộng khỏng ẵừỡc ẵt cc kắt ẵy ẵỏi khu vỳc hĂng hĩa Tuy nhin, nặu vệ lỷ ọn ẵnh, viẻc bõ trẽ dn cửng kắt ẵĩ lĂ bt buổc thệ v trẽ ca vt dn cửng phăi ẵừỡc cõ ẵnh cho cc tăi trng va ẵp pht sinh thng ẵy tĂu khỏng truyận trỳc tiặp tối kặt cảu kắt hĂng 2.2.2 Thỏng bo ọn ẵnh (Theo IGC Code 2.2.5) Tháng bŸo än ½Ùnh quy ½Ùnh ê 2.3.1-1, Ph·n 1B phăi bao góm băng tĩm tt vậ khă nng chõng chệm ca tĂu 2.3 Xă qua mn dừối boong mn khỏ (IGC Code 2.3) 2.3.1 Xă qua mn ViỴc trang bÙ v¡ kiÌm soŸt cŸc van l°p trÅn ẵừộng xă qua tỏn mn tữ cc khoang phẽa dừối boong m−n ho´c t÷ bÅn thõìng t·ng v¡ l·u trÅn boong m−n cÜ cŸc cøa kÏn théi tiặt phăi thịa mơn cc yu cÃu 13.4 PhÃn trữ viẻc chn cc van b giối hn bêi : (1) Mỉt van mỉt chiËu tú ½ỉng cÜ phừỗng tiẻn ẵĩng ch ẵổng tữ phẽa trn boong mn ; ho´c (2) Hai van mỉt chiËu tú ½ỉng khỏng cĩ phừỗng tiẻn ẵĩng ch ẵổng, vối ẵiậu kiẻn lĂ van bn tĂu luỏn tiặp cn ẵừỡc ẵè kièm tra trng thi lĂm viẻc, nặu khoăng cch thng ẵửng tẽnh tữ ẵừộng nừốc chờ hĂng mùa h ẵặn mợt nm tĂu ca õng xă lốn hỗn 0,01Lf 2.3.2 Van mæt chiËu CŸc van mæt chiËu tú ẵổng ẵừỡc nu 2.3.1 (1) vĂ (2) phăi cĩ kièu ẵừỡc ng kièm chảp thun vĂ ẵ khă nng ngn khỏng cho nừốc lt vĂo tĂu, cĩ xắt ẵặn chiậu chệm, ẵổ chợi vĂ nghing theo nhựng qui ẵnh chõng chệm 2.9 2.4 iậu kiẻn tăi trng 2.4.1 iậu kiẻn tăi trng (IGC Code 2.4) Khă nng chõng chệm b thng phăi ẵừỡc xem xắt ẵõi vối tảt că cc ẵiậu kiẻn tăi trng, sỳ thay ẵọi chiậu chệm vĂ ẵổ chợi cĩ thè xăy Khỏng cÃn phăi p dũng cc yu cÃu chõng chệm ẵõi vèi t¡u ê tr−ng thŸi d±n (kháng c·n x¾t ẵặn lừỡng hĂng cc kắt rội nhị trn boong ẵnh gi trng thi dn) nặu hĂng hĩa chửa trn tĂu chì dùng ẵè lĂm mt, tuÃn hoĂn hoc nhin liẻu 2.5 Giă ẵnh thng (IGC Code 2.5) 2.5.1 Phm vi thng Phm vi thng giă ẵnh tõi ẵa mn tĂu phăi phù hỡp vối Băng 8D/2.1 Phm vi thng giă ẵnh tõi ẵa ẵy phăi phù hỡp vối Băng 8D/2.2 Băng 8D/2.1 Hừống Theo chiËu dàc Theo chiËu ngang Theo chiËu th²ng ½ưng 14 Thng mn Phm vi thng Tr sõ nhị hỗn hai trÙ sâ 1/3L f 2/3 v¡ 14,5 m¾t Tr sõ nhị hỗn hai tr sõ B/5 vĂ 11,5 mắt (o bn tĂu tữ mn theo hừống vuỏng gĩc vối mt phng dc tàm trn ẵừộng nừốc chê h¡ng mïa h¿) Kháng gièi h−n lÅn phÏa trÅn (Tữ ẵừộng lỷ thuyặt ca tỏn ẵy tàm tĂu) tcvn 6259 -8D : 2003, Chừỗng 2.5.2 Cc lồ thðng khŸc (1) B¶t kü lå thðng n¡o cÜ ph−m vi nhị hỗn phm vi thng tõi ẵa qui ẵnh ê 2.5.1 nhõng cÜ thÌ d¹n tèi tƯnh tr−ng nghiÅm trng hỗn ẵậu phăi ẵừỡc ẵừa vĂo tẽnh ton (2) Lå thðng cịc bỉ cða m−n ê b¶t cư chå n¡o khu vúc h¡ng hÜa bÅn t¡u ½i ln qu 760 mi-li-mắt ẵo theo hừống vuỏng gĩc vối vị tĂu phăi ẵừỡc xem xắt vĂ cc vch ngang phăi ẵừỡc coi lĂ b thng theo qui ẵnh 2.8.1 Băng 8D/2.2 Hừống Theo chiậu dc Theo chiậu ngang Theo chiËu th²ng ½ưng Thðng ê ½Ÿy Ph−m vi thðng Cc phÃn khc ca tĂu 0,3 Lf tữ ẵừộng vuỏng gĩc mủi ca tĂu 2/3 vĂ Tr sõ nhị hỗn hai tr sõ Tr sõ nhị hỗn hai trÙ sâ 1/3 Lf 1/3 Lf 2/3 v¡ m¾t 14,5 mắt Tr sõ nhị hỗn hai tr sõ B/6 vĂ 10 mắt Tr sõ nhị hỗn hai tr sõ B/6 vĂ mắt Tr sõ nhị hỗn hai trÙ sâ B/15 v¡ m¾t TrÙ sâ nhị hỗn hai tr sõ B/15 vĂ (o tữ ẵừộng lỷ thuyặt ca tỏn ẵy tàm tĂu mắt (o tữ ẵừộng lỷ thuyặt ca tỏn ẵy ( xem 2.6.3).) tµm t¡u ( xem 2.6.3).) 2.6 VÙ trÏ cða cŸc k¾t h¡ng (IGC Code 2.6) 2.6.1 VÙ trẽ ca cc kắt hĂng Cc kắt hĂng phăi ẵừỡc ẵt vậ phẽa tĂu mổt khoăng nhừ sau : (1) loi tĂu 1G : Khỏng ẵừỡc nhị hỗn phm vi thng theo chiậu ngang qui ẵnh Băng 8-D/2.1 tẽnh tữ tỏn bao mn vĂ khỏng ẵừỡc nhị hỗn phm vi thng thng ẵửng qui ẵnh Băng 8-D/2.2 tẽnh tữ ẵừộng lỷ thuyặt ca tỏn ẵy tµm t¡u v¡ kháng cÜ chå n¡o cŸch tán bao nhị hỗn 760 mi-li-mắt (2) loi tĂu 2G/2PG vĂ 3G : Khỏng ẵừỡc nhị hỗn phm vi thng thng ẵửng qui ẵnh Băng 8-D/2.2 tẽnh tữ ẵừộng lỷ thuyặt ca tỏn ẵy tàm tĂu tĂu vĂ khỏng cĩ chồ nĂo cch tỏn bao nhị hỗn 760 mi-li-mắt 2.6.2 Ph−m vi thðng ê ½Ÿy t¡u theo chiËu th²ng ½ưng ‡Ì ½Ùnh vÙ k¾t, ph−m vi thðng ê ½Ÿy tĂu theo chiậu thng ẵửng phăi ẵừỡc ẵo tối ẵy trÅn dïng cŸc k¾t kiÌu m¡ng ho´c nøa m¡ng, nặu khỏng nhừ vy phăi ẵo tối ẵy ca kắt hĂng Phm vi thng mn theo chiậu ngang phăi ½õìc ½o tèi vŸch dàc dïng cŸc k¾t kiÌu mĂng hoc nứa mĂng, cín trừộng hỡp khc phăi ẵo tèi vŸch cða k¾t h¡ng (xem HƯnh 8D/2.1) ‡âi vèi cc kắt cch nhiẻt bn kẽch thừốc lồ thng phăi ẵừỡc ẵo tối tỏn ẵở kắt 2.6.3 Hõ hợt Trữ loi tĂu 1G, cc hõ hợt ẵt cc k¾t h¡ng cÜ thÌ nhá v¡o ph−m vi thðng ê ẵy theo chiậu thng ẵửng qui ẵnh Băng 8D/2.2 vối ẵiậu kiẻn cc hõ nĂy phăi nhị tối mửc cÜ thÌ ½−t ½õìc v¡ ph·n nhá dõèi tán ẵy trn khỏng vừỡt qu tr sõ nhị hỗn cŸc trÙ sâ sau : 25% chiËu cao cða ½Ÿy ½ái ho´c 350 mi-li-m¾t Khi kháng cÜ ½Ÿy ½ái, ph·n nhá xuâng dõèi gièi h−n trÅn cða ph−m vi thðng ẵy phăi khỏng lốn hỗn 350 mi-li-mắt Cĩ thè bị qua cc hõ hợt quy ẵnh phÃn nĂy xc ẵnh cc khoang b ănh hừờng thng 2.7 Ngp nừốc giă ẵnh (IGC Code 2.7) 2.7.1 Quy ẵnh chung 15 tcvn 6259 -8D : 2003, Chừỗng Cc yu cÃu 2.9 phăi ẵừỡc khng ẵnh bng tẽnh ton cĩ xắt ẵặn cc ẵc ẵièm thiặt kặ cða t¡u ; vÙ trÏ, hƯnh dŸng v¡ thÌ tÏch cc khoang b thng ; sỳ phàn bõ, mt ẵổ từỗng ẵõi vĂ ănh hừờng ca mt thong hĂng lịng, chiậu chệm vĂ ẵổ chợi tảt că cc trng thi tăi trng ừộng trng tăi mùa h FP B hoc 2m* 15 Hệnh chiặu ẵửng B hoc 11,5 m* S.L.L B ho´c 11,5m* S.L.L 760 mm 760mm B ho´c 2m* 15 B ho´c 2m* 15 ‡õéng tµm tĂu Mt ct ngang ừộng tàm tĂu * Lảy tr sõ nĂo nhị hỗn Hệnh 8D/2.1 2.7.2 Yu cÃu xc ẵnh kắt nhừ xc lp 2.6 Hẻ sõ ngp khoang Hẻ sõ ngp khoang thng giă ẵnh phăi phù hỡp vối Băng 8D/2.3 Băng 8D/2.3 Khoang Dùng lĂm kho Dïng l¡m bng ê Dïng ½Ì ½´t mŸy mÜc Trõng Chửa nhin liẻu lịng Dùng chửa cc chảt lịng khc Chợ thẽch : 16 Hẻ sõ ngp khoang Hẻ sõ ngp khoang 0,60 0,95 0,85 0,95 ẵặn 0,95 * ẵặn 0,95 * tcvn 6259 -8D : 2003, Chừỗng Hẻ sõ ngp khoang ca cc khoang ngp mổt phÃn phăi phù hỡp vối lừỡng chảt lịng ẵừỡc chê khoang 2.7.3 Lå thðng ê cŸc k¾t chưa chảt lịng Trong bảt cử trừộng hỡp nĂo nặu cĩ hịng gày thng kắt chửa chảt lịng thệ ẵậu phăi ẵừỡc coi lĂ hĂng kắt b mảt ho¡n to¡n v¡ bÙ thay thỈ b±ng nõèc biÌn tèi mưc m´t ph²ng cµn b±ng ci cïng 2.7.4 Lå thðng ê cŸc vŸch ngang Trong b¶t cư trõéng hìp n¡o nặu cĩ thng giă ẵnh cc vch ngang kẽn nõèc nhõ ½õìc nÅu ê 2.8.1 (4), (5) v¡ (6) thệ cc vch ngang phăi ẵừỡc ẵt cch ẽt nhảt mổt khoăng bng phm vi thng theo chiậu dc nu Băng 8D/2.1 mối ẵừỡc coi lĂ cĩ hiẻu quă Khi cc vch ngang ẵừỡc ẵt mổt khoăng cch nhị hỗn, mổt hoc nhiậu vch nm phm vi thng phăi ẵừỡc giă ẵnh lĂ khỏng cĩ xc ẵnh cc khoang b ngp NgoĂi ra, bảt cử ph·n n¡o cða mæt vŸch ngang gièi h−n cŸc khoang mn hoc cc khoang ẵy ẵỏi phăi ẵừỡc xem lĂ thðng nỈu cŸc ranh gièi vŸch kÏn nõèc ê phm v thng nĂy ẵừỡc giă ẵnh lĂ khỏng cĩ xc ẵnh cc khoang b ngp Hỗn nựa, bảt cư ph·n n¡o cða mỉt vŸch ngang gièi h−n cŸc khoang mn hoc khoang ẵy ẵỏi phăi ẵừỡc giă ẵnh l¡ bÙ thðng nỈu cŸc ranh gièi vŸch kÏn nõèc n±m ph−m vi thðng theo chiËu th²ng ½ưng ho´c n±m ngang u c·u ê 2.5 B¶t cư vŸch ngang nĂo củng phăi ẵừỡc giă ẵnh lĂ b thng nặu cĩ bc hoc hòm dĂi hỗn mắt phm vi b thng giă ẵnh Bc to thĂnh bời vch ½uái v¡ m´t tán ½Ÿy trÅn ê cuâi t¡u kháng ½õìc coi l¡ bºc ê mịc n¡y 2.7.5 Ngºp kháng ẵõi xửng TĂu phăi ẵừỡc thiặt kặ cho trệ ẵừỡc mửc ẵổ tõi thièu hiẻn từỡng ngp khỏng ẵõi xửng phù hỡp vối trang thiặt b ca tĂu 2.7.6 Thiặt b càn bng Cc thiặt b càn bng ẵíi hịi phừỗng tiẻn cỗ giối nhừ cc van hoc cc õng dạn ẵiậu chình càn bng, nặu ẵừỡc trang b, khỏng ẵừỡc xem lĂ cỏng cũ ẵè giăm gÜc nghiÅng ngang ho´c ½Ì ½−t tèi ½ỉ dú trù ọn ẵnh tõi thièu thịa mơn cc yu cÃu ca 2.9.1-2 ổ dỳ trự ọn ẵnh hựu hiẻu phăi ẵừỡc trệ tảt că cc giai ẵon tiặn hĂnh càn bng Cc khoang ẵừỡc nõi bng cc õng dạn cĩ tiặt diẻn ngang lốn cĩ thè ẵừỡc xem l¡ liËn 2.7.7 Sú ngºp t¯ng d·n NỈu cŸc ½õéng âng, kÅnh tháng giÜ, cŸc giỈng ho´c cŸc ½õéng hÃm ẵừỡc ẵt phm vi b thng giă ẵnh, nhừ qui ẵnh 2.5 thệ phăi cĩ biẻn php ½Ì cho sú ngºp t¯ng d·n kháng thÌ theo ½Ü m¡ lan ræng cŸc khoang khŸc ngo¡i cŸc khoang giă ẵnh b ngp ẵõi vối mồi trừộng hỡp thðng 2.7.8 TÏnh näi cða thõìng t·ng TÏnh näi cða bảt cử thừỡng tÃng nĂo trỳc tiặp phẽa trn lồ thng mn ẵậu khỏng phăi tẽnh ẵặn Tuy nhin, cŸc ph·n kháng bÙ ngºp cða thõìng t·ng bÅn ngo¡i phm vi thng cĩ thè ẵừỡc tẽnh ẵặn vối ẵiậu kiẻn lĂ : (1) Chợng ẵừỡc tch biẻt vối khoang bÙ hÞng b±ng cŸc khoang kÏn nõèc v¡ cŸc yÅu c·u ê 2.9.1-2 (1) ½âi vèi cŸc khoang kháng chƯm nĂy ẵừỡc thịa mơn; vĂ (2) Cc lồ khoắt cc khoang nĂy phăi cĩ khă nng ẵĩng ẵừỡc nhộ cc cứa trừỡt kẽn nừốc ẵiậu khièn tữ xa vĂ cc lồ khoắt khỏng ẵừỡc băo vẻ thệ khỏng b ngºp ê mưc ½ỉ dú trù än ½Ùnh tâi thiÌu theo quy ½Ùnh ê 2.9.1-3 (1) Tuy nhiÅn, cÜ thÌ cho phắp ngp mổt lồ khoắt bảt kỹ cĩ cứa ẵĩng kẽn thội tiặt khc 2.8 Tiu chuán thng (IGC Code 2.8) 2.8.1 Quy ½Ùnh chung 17 tcvn 6259 -8D : 2003, Chừỗng TĂu phăi khỏng b chệm thng nu 2.5 theo giă thiặt vậ ngp khoang 2.7 ẵặn mửc ẵổ xc ẵnh bời loi tĂu theo cŸc tiÅu chu¸n sau : (1) T¡u lo−i 1G phăi coi lĂ cĩ thè chu ẵừỡc thng bảt kü chå n¡o trÅn suât chiËu d¡i cða t¡u (2) TĂu loi 2G cĩ chiậu dĂi trn 150 mắt phăi chu ẵừỡc thng bảt cử chồ nĂo trn suõt chiËu d¡i cða t¡u (3) T¡u lo−i 2G cÜ chiËu dĂi ẵặn 150 mắt phăi chu ẵừỡc thng bảt cư chå n¡o trÅn st chiËu d¡i cða nÜ tr÷ mæt hai vŸch cða khoang mŸy n±m ê phÏa ẵuỏi (4) TĂu loi 2PG phăi chu ẵừỡc thng b¶t cư chå n¡o trÅn st chiËu d¡i cða nÜ tr÷ cŸc vŸch ngang n±m cŸch xa ph−m vi thðng theo chiậu dc quy ẵnh Băng 8D/2.1 (5) TĂu loi 3G cĩ chiậu dĂi tữ 125 mắt trờ ln phăi chu ẵừỡc thng bảt cử chồ nĂo trn suât chiËu d¡i cða nÜ tr÷ cŸc vŸch ngang n±m cŸch xa ph−m vi thðng theo chiËu dàc quy ẵnh Băng 8D/2.1 (6) TĂu loi 3G cĩ chiậu dĂi dừối 125 mắt phăi chu ẵừỡc thng bảt cư chå n¡o trÅn chiËu d¡i cða nÜ tr÷ cŸc vŸch ngang n±m cŸch xa ph−m vi thðng theo chiËu dc quy ẵnh Băng 8D/2.1 vĂ trữ cc lồ thng lin quan ẵặn khoang my ẵt phẽa ẵuỏi tĂu Tuy nhin, khă nng chu ngp ca khoang my phăi ẵừỡc ng kièm xem xắt 2.8.2 Tiu chuán thng cho t¡u nhÞ Trong trõéng hìp cŸc t¡u nhÞ lo−i 2G/2PG vĂ 3G khỏng thịa mơn cc yu cÃu từỗng ửng ca 2.8.1 (3), (4) vĂ (6) vậ mi phừỗng diẻn thệ ng kièm cĩ thè xem xắt giăm ½´c biỴt vèi ½iËu kiỴn l¡ cŸc biỴn phŸp thay thặ phăi giự ẵừỡc mửc giăm ẵổ an toĂn từỗng ẵừỗng 2.9 Yu cÃu vậ chõng chệm 2.9.1 Yu cÃu vậ chõng chệm (IGC Code 2.9) TĂu phăi khỏng b chệm thng giă ẵnh nu 2.5 theo tiu chuán quy ẵnh 2.8 ẵiậu kiẻn càn bng ọn ẵnh vĂ phăi thịa mơn cc tiu chuán sau ẵày giai ẵon ngp bảt kỹ (1) Xắt ẵặn ngp khoang, nghing vĂ chợi, ẵừộng nừốc phăi nm dừối mắp thảp hỗn ca bảt kỹ lồ khoắt nĂo mĂ qua ẵĩ cĩ thè lĂm tng hoc giăm ngp Cc lồ khoắt nĂy phăi góm că cc õng thỏng hỗi vĂ lồ khoắt ẵừỡc ẵĩng bng cc cứa kÏn nõèc ho´c cŸc n°p miỴng khoang kÏn nõèc CŸc lồ khoắt nĂy khỏng bao góm cc lồ khoắt ẵừỡc ½Üng kÏn b±ng cŸc n°p lå ngõéi chui kÏn nõèc vĂ cc hợp-lỏ kẽn nừốc, cc np miẻng khoang kẽn nừốc nhị mĂ trệ ẵừỡc sỳ nguyn cao cho boong, cc cứa trừỡt kẽn nừốc ẵiậu khièn tữ xa, vĂ cc cứa hợp-lỏ kièu cõ ẵnh (2) Gĩc nghing ngang lốn nhảt ngp khỏng ẵõi xửng phăi kháng ½õìc quŸ 30o ; v¡ (3) Dú trù än ẵnh cc giai ẵon ngp trung gian phăi thịa mơn yu cÃu ca ng kièm, vy, khỏng ẵừỡc nhị ẵng kè so vối yu cÃu -3 (1) ê tr−ng thŸi cµn b±ng cuâi cïng sau ngp (1) ừộng cong tay ẵín ọn ẵnh tỉnh phăi cĩ giối hn dừỗng tõi thièu lĂ 200 ; tr sâ tâi ½a cða cŸnh tay ½Ýn än ½Ùnh tØnh ẽt nhảt phăi bng 0,1 mắt phm vi 20o ; diẻn tẽch chn bời ẵừộng cong phm vi nĂy khỏng ẵừỡc nhị hỗn 0,0175 m.rad Cc lồ khoắt khỏng ẵừỡc băo vẻ phăi khỏng b ngp nừốc phm vi nĂy trữ khoang giă ẵnh cĩ lin quan bÙ ngºp Trong ph−m vi n¡y cho ph¾p cŸc lồ khoắt ẵừỡc liẻt k -2 (1) vĂ cc lồ khoắt khc cĩ khă nng ẵĩng kẽn bng cứa kÏn théi tiỈt bÙ ngºp; v¡ (2) Ngn n¯ng lõìng dỳ phíng phăi cĩ thè hot ẵổng ẵừỡc 18 tcvn 6259 -8d: 2003, Chapter 17 Inert gas displacement may be used for discharging cargo from type C independent tanks provided the cargo system is designed for the expected pressure 17.16 Ethylene oxide 17.16.1 Application ( IGC code 17.16.1) For the carriage of ethylene oxide the requirements of 17.20 apply, with the additions and modifications as given in this section 17.16.2 Use of deck tanks (with reference to IGC code 17.16.2) Tanks carrying ethylene oxide are not to be located on the deck 17.16.3 Materials ( IGC code 17.16.3) Stainless steel type 416 and 442 as well as cast iron are not to be used in ethylene oxide cargo containment and piping systems 17.16.4 Cleaning of tanks (with reference to IGC code 17.16.4) A cleaning system is to be provided to remove all traces of previous cargoes from tanks and associated pipework before loading 17.16.5 Discharging ( IGC code 17.16.5) Ethylene oxide is to be discharged only by deepwell pumps or inert gas displacement The arrangement of pumps is to comply with 17.20.5-3 17.16.6 Temperature control (with reference to IGC code 17.16.6) A refrigerating system is to be provided to maintain ethylene oxide at temperatures of less than 30 0C 17.16.7 Setting pressure of relief valves (with reference to IGC code 17.16.7) Pressure relief valves are to be set at a pressure of not less than 0.55 MPa gauge The maximum set pressure is to be specially approved by VR 17.16.8 Nitrogen concentration in the vapour space (with reference to IGC code 17.16.8) System of the protective padding of nitrogen gas as required by17.20.15 is to be such that the nitrogen concentration in the vapour space of the cargo tank will at not time be less than 45% by volume 17.16.9 Inerting of cargo tanks (with reference to IGC code 17.16.9) A system is to be provided to inert the cargo tanks with nitrogen 17.16.10 Operation of water spray system ( IGC code 17.16.10) The water spray system required by 17.20.17 and that required by 11.3 is to operate automatically in a fire involving the cargo containment system 17.16.11 Emergency jettisoning arrangement ( IGC code 17.16.11) A jettisoning arrangement is to be provided to allow the emergency discharge of ethylene oxide in the event of uncontrollable self-reaction 17.17 Isopropylamine and monoethylamine ( IGC code 17.17) 17.17.1 Separation of piping systems 103 tcvn 6259 -8d: 2003, Chapter 17 Separate piping systems are to be provided 17.18 Methyl acetylene-propadiene mixtures 17.18.1 Stabilization for transport (with reference to IGC code 17.18.1) The requirements in 17.18 are applicable to methyl acetylene-propadiene mixtures that are suitably stabilized for transport 17.18.2 Examples of acceptable stabilized compositions ( IGC code 17.18.2) Composition (1) Maximum methyl acetylene to propadiene molar ratio of to 1; (2) Maximum combined concentration of methyl acetylene and propadiene of 65 mol per cent; (3) Minimum combined concentration of propane, butane, and isobutane of 24 mol per cent , of which at least one third (on a molar basis) must be butanes; and one third propane; and (4) Maximum combined concentration of propylene and butadiene of 10 mol per cent Composition (1) Maximum methyl acetylene and propadiene combined concentration of 30 mol per cent; (2) Maximum methyl acetylene concentration of 20 mol per cent; (3) Maximum propadiene concentration of 20 mol per cent; (4) Maximum propylene concentration of 45 mol per cent; (5) Maximum butadiene and butylenes combined concentration of mol per cent; (6) Minimum saturated C hydrocarbon concentration of mol per cent; and (7) Minimum propane concentration of 25 mol per cent; 17.18.3 Other compositions ( IGC code 17.18.3) A ship carrying other compositions than those specified in 17.18.2 is to be to the satisfaction of VR 17.18.4 Refrigeration system ( IGC code 17.18.4) A ship carrying methyl acetylene-propadiene mixtures is to preferably have an indirect refrigeration system as specified in 7.2.4(2) Alternatively, a ship not provided with indirect refrigeration may utilize direct vapour compression refrigeration subject to pressure and temperature limitations depending on the composition For the example compositions given in 17.18.2, the following features are to be provided: (1) A vapour compressor that does not raise the temperature and pressure of the vapour above 60 oC and 1.75 MPa gauge during its operation, and that does not allow vapour to stagnate in the compressor while it continues to run (2) Discharge piping from each compressor stage or each cylinder in the same stage of a reciprocating compressor is to have: (a) Two temperature-actuated shutdown switches set to operate at 60 0C or less; (b) A pressure-actuated shutdown switch set to operate at 1.75 MPa gauge or less; and (c) A safety relief valve set to relieve at 1.8 MPa gauge or less (3) The relief valve required by (2)(c) is to vent to a mast meeting the requirements of 8.2.9, 8.2.10, 8.2.13 and 8.2.14 and is not to relieve into the compressor suction line (4) An alarm that sounds in the cargo control position and in the navigating bridge when a high-pressure switch, or a high-temperature switch operates 17.18.5 Segregation of piping systems (with reference to IGC code 17.18.5) The piping system, including the cargo refrigeration system, for tanks to be loaded with methyl acetylene104 tcvn 6259 -8d: 2003, Chapter 17 propadiene mixtures is to be either independent or separate from piping and refrigeration systems for other tanks This segregation applies to all liquid and vapour vent lines and any other possible connections, such as common inert gas supply lines 17.19 Nitrogen ( IGC code 17.19) 17.19.1 Effect of high oxygen concentrations Materials of construction and ancillary equipment such as insulation are to be resistant to the effects of high oxygen concentrations caused by condensation and enrichment at the low temperatures attained in parts of the cargo system Due consideration is to be given to ventilation in such areas where condensation might occur to avoid the stratification of oxygen-enriched atmosphere 17.20 Propylene oxide and mixtures of ethylene oxide-propylene oxide with ethylene oxide content of not more than 30% by weight 17.20.1 General (with reference to IGC code 17.20.1) The provisions of 17.20 are applicable to acethylene-free products 17.20.2 Cargo tanks (with reference to IGC Code 17.20.2.2) A system is to be provided for thoroughly and effectively cleaning to remove all traces of previous cargoes from tanks associated pipework (with reference to IGC Code 17.20.2.3) Tanks and associated pipework are to be able to be checked the effectiveness of cleaning products by suitable testing or inspection to ascertain that no traces of acidic or alkaline materials remain that might create a hazardous situation in the presence of these products (with reference to IGC Code 17.20.2.4) Tanks are to be of the one capable of entering and inspecting to ensure freedom from contamination, heavy rust deposits and any visible structural defects ( IGC Code 17.20.2.5) Tanks for the carriage of these products are to be of steel or stainless steel construction (with reference to IGC Code 17.20.2.6) A cleaning system is to be provided for tanks and associated pipework are to be provided with cleaning system for loading other cargoes 17.20.3 Valves, flanges, fittings, etc ( IGC code 17.20.3) All valves, flanges, fittings and accessory equipment are to be of a type suitable for use with these products and are to be constructed of steel or stainless acceptable to VR The chemical composition of all material used is to be submitted to VR for approval prior to fabrication Discs or disc faces, seats and other wearing parts of valves are to be made of stainless steel containing not less than 11% chromium Gaskets are to be constructed of materials which not react with, dissolve in, or lower the autoignition temperature of these products and which are fire-resistant and possess adequate mechanical behaviour The surface exposed to the cargo is to be polytetrafluoroethylene (PTFE) or materials giving a similar degree of safety by their inertness Spirally-wound stainless steel with a filler of PTFE or similar fluorinated polymer may be accepted by VR Insulation and packing if used are to be of a material which does not react with, dissolve in, or lower the autoignition temperature of these products 105 tcvn 6259 -8d: 2003, Chapter 17 The following materials are generally found unsatisfactory for gaskets, packing and similar uses in containment systems for these products and would require testing before being apporved by VR: (1) Neoprene or natural rubber if it comes into contact with the products; (2) Asbestos or binders used with asbestos; (3) Materials containing oxides of magnesium, such as mineral wools 17.20.4 Filling and discharge pipes (IGC code 17.20.4) Filling and discharge piuping is to extend to within 100 mm of the bottom of the tank or any sump 17.20.5 Loading and discharging of products (with reference to IGC code 17.20.5) Loading and discharging systems are to be of such that venting of the tanks to atmosphere does not occur If vapour return to shore is used during tank loading, the vapour return system connected to a containment system for the product is to be independent of all other containment systems A system is to be provided to maintain the pressure in the cargo tank above 0.007 MPa gauge The cargo is to be discharged only by deepwell pumps, hydraulically operated submerged pumps, or inert gas displacement Each cargo pump is to be arranged to ensure that the product does not heat significantly if the discharge line from the pump is shut off or otherwise blocked 17.20.6 Ventilation of cargo tanks ( IGC code 17.20.6) Tanks carrying these products are to be vented independently of tanks carrying other products Facilities are to be provided for sampling the tank contents without opening the tank to atmosphere 17.20.7 Cargo hoses ( IGC code 17.20.7) Cargo hoses used for transfer of these products are to be marked "FOR ALKYLENE OXIDE TRANSFER ONLY" 17.20.8 Monitoring of hold spaces ( IGC code 17.20.8) Hold spaces are to be monitored for these products Hold spaces surrounding type A and B independent tanks are also to be inerted and monitored for oxygen The oxygen content of these spaces is to be maintained below 2% Portable sampling equipment is satisfactory 17.20.9 Disconnection of shorelines (with reference to IGC code 17.20.9) Prior to disconnecting shore-lines, the pressure in liquid and vapour lines is to be relieved through suitable valves installed at the loading header Liquid and vapour from these lines are not to be discharged to atmosphere 17.20.10 Maximum design pressure of cargo tanks ( IGC code 17.20.10) Tanks are to be designed for the maximum pressure expected to be encountered during loading, carriage or unloading of cargo 17.20.11 Design vapour pressure ( IGC code 17.20.11) Tanks for the carriage of propylene oxide with a design vapour pressure of less than 0.06 MPa and tanks for the carriage of ethylene oxide-propylene oxide mixtures with a design vapour pressure of less than 0.12 MPa are to have a cooling system to maintain the cargo below the reference temperature For reference temperature see 15.1.4(1) 17.20.12 Set pressure of pressure relief valves ( IGC code 17.20.12) Pressure relief valve setting are not to be less than 0.02 MPa gauge and for type C independent cargo tanks 106 tcvn 6259 -8d: 2003, Chapter 17 not greater than 0.7 MPa gauge for the carriage of propylene oxide and not greater than 0.53 MPa gauge for the carriage of ethylene oxide-propylene oxide mixtures 17.20.13 Separation of cargo piping systems ( IGC code 17.20.13.1) The piping system for tanks to be loaded with these products is to be completely separate from piping systems for all other tanks, including empty tanks, and from all cargo compressors If the piping system for the tanks to be loaded with these products is not independent the required piping separation is to be accomplished by the removal of spool pieces, valves, or other pipe sections and the installation of blank flanges at these locations The required separation applies to all liquid and vapour piping, liquid and vapour vent lines and any other possible connections such as common inert gas supply lines (with reference to IGC Code 17.20.13.2) Approved cargo handling plans are to be provided on board the ship 17.20.14 List of maximum allowable tank filling limits (with reference to IGC code 17.20.14) A copy of the list is to be permanently kept on board 17.20.15 Padding nitrogen gas (with reference to IGC code 17.20.15) An automatic nitrogen make-up system is to be installed to prevent the tank pressure falling below 0.007 MPa gauge in the event of product temperature fall due to ambient conditions or malfunctioning of refrigeration system Sufficient nitrogen is to be available on board to satisfy the demand of the automatic pressure control Nitrogen of commercially pure quality (99.9% by volume) is to be used for padding A battery of nitrogen bottles connected to the cargo tanks through a pressure reduction valve satisfies the intention of the expression "automatic" in this context 17.20.16 Oxygen content of vapour space (with reference to IGC code 17.20.16) Means for testing the cargo tank vapour space is to be provided to ensure that the oxygen content is 2% by volume or less 17.20.17 Water spray system (with reference to IGC code 17.20.17) A water spray system of sufficient capacity is to be provided to blanket effectively the area surrounding the loading manifold, the exposed deck piping associated with product handling and the tank domes The arrangement of piping and nozzles is to be such as to give a uniform distribution rate of 10 l/m2 per minute The water spray system is to be capable to both local and remote manual operation and the arrangement is to ensure that any spilled cargo is washed away Remote manual operation are to be arranged such that remote starting of pumps supplying water spray system and remote operation of any normally closed valves in the system can be carried out from a suitable location outside the cargo area, adjacent to the accommodation spaces and readily accessible and operable in the event of fire in the areas protected 17.21 Vinyl chloride (with reference to IGC code 17.21) 17.21.1 Consideration for carriage of product In cases where polymerization of vinyl chloride is prevented by addition of an inhibitor, 17.8 is applicable In cases where no or insufficient inhibitor has been added, any inert gas used for the purposes of 17.6 is to contain not more oxygen than 0.1% A system is to be provided to analyse inert gas samples from the tanks and piping before loading When vinyl chloride is carried, the tanks are to be able to maintain a positive pressure, also during ballast voyages between successive carriages 17.22 Operating requirements 17.22.1 Application 107 tcvn 6259 -8d: 2003, Chapter 17 The provisions in this 17.22 are not the conditions for maintenance of classification for which examinations are required but the conditions to be observed by the ship owner, ship master or other persons who may concern with the ship operation 17.22.2 Refrigeration systems (with reference to IGC code 17.4.3) If the ship is to carry consecutively products as specified in 17.4.2 with a ballast passage between, all uninhibited liquid is to be removed prior to the ballast voyage If a second cargo is to be carried between such consecutive cargoes, the reliquefaction system is to be thoroughly drained and purged before loading the second cargo Purging is to be carried out using either inert gas or vapour from the second cargo, if compatible Practical steps are to be taken to ensure that polymers or peroxides not accumulate in the cargo system 17.22.3 Exclusion of air from vapour spaces (with reference to IGC code 17.16) Air is to be removed from the cargo tanks and associated piping before loading and then subsequently excluded by: (1) Introducing inert gas to maintain a positive pressure The inert gas is to be in accordance with 17.6.1(1) (2) Control of cargo temperatures such that a positive pressure is maintained at all times 17.22.4 Inhibition (with reference to IGC code 17.8) Care is to be taken to ensure that the cargo is sufficiently inhibited to prevent polymerization at all times during the voyage Ships are to be provided with a certificate specified in 17.8.1 17.22.5 Flame screens on vent outlets (with reference to IGC code 17.10) Ordinary protection screens are to be fitted after removal of the flame screens required in 17.10 17.22.6 Maximum allowable quantity of cargo per tank ( IGC code 17.11.1) When carrying a cargo referenced to 17.11, the quantity of the cargo is not to exceed 3,000 m3 in any one tank 17.22.7 Submerged electric cargo pumps ( IGC code 17.12) The vapour space of cargo tanks equipped with submerged electric motor pumps is to be inerted to a positive pressure prior to loading, during carriage and during unloading of flammable liquids 17.22.8 Ammonia (with reference to IGC code 17.13) Liquid ammonia is never to be sprayed into a tank containing air as there is a risk of creating a static electrical charge which could cause ignition To minimize the risk of stress corrosion cracking occurring when ammonia is carried at a temperature above -20 0C (vapour pressure 0.19 MPa), the oxygen content of the vapour space in pressure vessels and in pipelines made of carbon steel (and other steels which require special consideration) is to be reduced to the minimum practicable before liquid ammonia is introduced 17.22.9 Chlorine (with reference to IGC Code 17.14.1.6) The Administration and the port Administration may require that chlorine is carried in refrigerated state at a specified maximum pressure (with reference to IGC Code 17.14.4.2) During the gas-freeing of cargo tanks, vapours are not to be discharged to the atmosphere (with reference to IGC Code 17.14.6.2) The chlorine content of the gas in the vapour space of the cargo tank after loading is to be greater than 80% by 108 tcvn 6259 -8d: 2003, Chapter 17 volume 17.22.10 Ethylene Oxide ( IGC Code 17.16.2) Deck tanks are not to be used for the carriage of ethylene oxide (IGC Code 17.16.4) Before loading, tanks are to be thoroughly and effectively cleaned to remove all traces of previous cargoes from tanks and associated pipework, except where the immediate prior cargo has been ethylene oxide, propylene oxide or mixtures of these products Particular care is to be taken in the case of ammonia in tanks made of steel other than stainless steel ( IGC Code 17.16.8) The protective padding of nitrogen gas as required by 17.20.15 is to be such that the nitrogen concentration in the vapour space of the cargo tank will at no time be less than 45% by volume ( IGC Code 17.16.9) Before loading and at all times when the cargo tank contains ethylene oxide liquid or vapour, the cargo tank is to be inerted with nitrogen 17.22.11 Methyl acetylene-propadiene mixtures ( IGC Code 17.18.1) Methyl acetylene-propadiene mixtures are to be suitably stabilized for transport Additionally, upper limits of temperature and pressure during the refrigeration are to be specified for the mixtures ( IGC Code 17.18.3) Other compositions may be accepted provided the stability of the mixture is demonstrated to the satisfaction of the Administration 17.22.12 Propylene oxide and mixtures of ethylene oxide-propylene oxide with ethylene oxide content of not more than 30% by weight (with reference to IGC code 17.20) ( IGC Code 17.20.1) Products transported under the provisions of 17.20 are to be acetylene-free (IGC Code 17.20.2.1) Unless cargo tanks are properly cleaned, these products are not to be carried in tanks which have contained as one of the three previous cargoes any product known to catalyse polymerization, such as: (1) anhydrous ammonia and ammonia solutions; (2) amines and amine solutions; (3) oxidizing substances (e.g chlorine) (IGC Code 17.20.2.2) Before loading, tanks are to be thoroughly and effectively cleaned to remove all traces of previous cargoes from tanks and associated pipework, except where the immediate prior cargo has been propylene oxide or ethylene oxidepropylene oxide mixtures Particular care is to be taken in the case of ammonia in tanks made of steel other than stainless steel (IGC Code 17.20.2.3) In all cases, the effectiveness of cleaning procedures for tanks and associated pipework is to be checked by suitable testing or inspection to ascertain that no traces of acidec or alkaline materials remain that might create a hazardous situation in the presence of these products ( IGC Code 17.20.2.4) Tanks are to be entered and inspected prior to each initial loading of these products to ensure freedom from 109 tcvn 6259 -8d: 2003, Chapter 17 contamination, heavy rust deposits and any visible structural defects When cargo tanks are in continuous service for these products, such inspections are to be performed at intervals of not more than years (IGC Code 17.20.2.6) Tanks which have contained these products may be used for other cargoes after thorough cleaning of tanks and associated pipework systems by washing or purging (with reference to IGC Code 17.20.5.1) The products are to be loaded and discharged in such a manner that venting of the tanks to atmosphere does not occur (IGC Code 17.20.5.2) During discharging operations, the pressure in the cargo tank is to be maintained above 0.007 MPa gauge (IGC Code 17.20.5.3) The cargo is to be discharged only by deepwell pumps, hydraulically operated submerged pumps, or inert gas displacement Each cargo pump is to be arranged to ensure that the product does not heat significantly if the discharge line from the pump is shut off or otherwise blocked 10 (IGC Code 17.20.13.2) The products referred to 17.20 are to be transported only in accordance with cargo handling plans that have been approved by the Administration Each intended loading arrangement is to be shown on a separate cargo handling plan Cargo handling plans are to be show the entire cargo piping system and the locations for installation of blank flanges needed to meet the above piping separation requirements A copy of each approved cargo handling plan is to be kept on board the ship The international Certificate of Fitness for the Carriage of Liquefied Gases in Bulk is to be endorsed to include reference to the approved cargo handling plans 11 (IGC Code 17.20.13.3) Before each initial loading of these product and before every subsequent return to such service, certification verifying that the required piping separation has been achieved is to be obtained from a responsible person acceptable to the port Administration and carried on board the ship Each connection between a blank flange and pipeline flange is to be fitted with a wire and seal by the responsible person to ensure that inadvertent removal of the blank flange is impossible 12 (IGC Code 17.20.13.4) The maximum allowable tank filling limits for each cargo tank are to be indicated for each loading temperature which may be applied and for the applicable maximum reference temperature, on a list to be approved by the Administration A copy of the list is to be permanently kept on board by the master 13 (with reference to IGC Code 17.20.15) The cargo is to be carried under a suitable protective padding of nitrogen gas 14 (IGC Code 17.20.16) The cargo tank vapour space is to be tested prior to and after loading to ensure that the oxygen content is 2% by volume or less 15 (with reference to IGC Code 17.20.17) In addition to 17.20.17, a water hose with pressure to the nozzle, when ambient temperatures permit, is to be connected ready for immediate use during loading and unloading operations 17.22.13 Vinyl chloride (with reference to IGC Code 17.21) In cases where polymerization of vinyl chloride is prevented by addition of an inhibitor, 17.8 is applicable In cases where no or insufficient inhibitor has been added, any inert gas used for the purposes of 17.6 is to contain not more oxygen than 0.1% Before loading is started, inert gas samples from the tanks and piping are to be analysed When vinyl chloride is carried, a positive pressure is always to be maintained in the tanks, also during ballast voyages between successive carriages 110 tcvn 6259 -8d: 2003, Chapter 18 Chapter 18 18.1 OPERATING REQUIREMENT Operation manual 18.1.1 General Operation manual approved by VR is to be provided on board the ship This operation manual is to include the information specified in 18.2 18.2 Operating requirements 18.2.1 Application The provisions in 18.2 are not the conditions for maintenance of classification for which examinations are required but the conditions to be observed by the ship owner, ship master or other persons who may concern with the ship operation 18.2.2 Cargo information (with reference to IGC code 18.1) Information is to be on board the ship and available to all concerned, giving the necessary data for the safe carriage of cargo Such information is to include for each product carried: (1) (2) (3) (4) (5) (6) (7) (8) A full description of the physical and chemical properties necessary for the safe containment of the cargo; Action to be taken in the event of spills or leaks; Counter-measures against accidental personal contact; Fire-fighting procedures and fire-fighting media; Procedures for cargo transfer, gas-freeing, ballasting, tank cleaning and changing cargoes; Special equipment needed for the safe handling of the particular cargo; Minimum allowable inner hull steel temperatures; and Emergency procedures Products required to be inhibited are to be refused if the certificate required by 17.8 is not supplied A copy of this Part, the IGC Code or national regulations incorporating the provisions of the IGC Code is to be on board every ship 18.2.3 Compatibility ( IGC code 18.2) The master is to ascertain that the quantity and characteristics of each product to be loaded are within the limits indicated in the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk and in the Loading and Stability Information booklet provided for in 2.2.2 and that products are listed in the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk as required under section of the Certificate Care is to be taken to avoid dangerous chemical reactions if cargoes are mixed This is of particular significance in respect of: (1) tank cleaning procedures required between successive cargoes in the same tank ; and (2) simultaneous carriage of cargoes which react when mixed This is to be permitted only if the complete cargo systems including, but not limited to, cargo pipework, tanks, vent systems and refrigeration systems are separated 18.2.4 Personnel training ( IGC code 18.3) 112 Reference is made to the provisions of the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978, and in particular to the "Mandatory minimum requirements for the training and qualifications of masters, officers and ratings of liquefied gas tankers" regulation V/3, Chapter V of the Annex to that Convention and to resolution 12 of the International Conference on Training and tcvn 6259 -8d: 2003, Chapter 18 Certification of Seafarers, 1978 Personnel involved in cargo operations are to be adequately trained in handling procedures All personnel are to be adequately trained in the use of protective equipment provided on board and have basic training in the procedures, appropriate to their duties, necessary under emergency conditions Officers are to be trained in emergency procedures to deal with conditions of leakage, spillage or fire involving the cargo, based on MEDICAL FIRST AID GUIDE FOR USE IN ACCIDENTS INVLVING DANGEROUS GOOD (MFAG) and the related requirements of Part A and B of STCW Code, and a sufficient number of them is to be instructed and trained in essential first aid for the cargoes carried 18.2.5 Entry into spaces ( IGC code 18.4) Personnel are not to enter cargo tanks, hold spaces, void spaces, cargo handling spaces or other enclosed spaces where gas may accumulate, unless: (1) The gas content of the atmosphere in such space is determined by means of fixed or portable equipment to ensure oxygen sufficiency and the absence of toxic atmosphere; or (2) Personnel wear breathing apparatus and other necessary protective equipment and the entire operation is under the close supervision of a responsible officer Personnel entering any space designated as gas-dangerous on a ship carrying flammable products are not to introduce any potential source of ignition into the space unless it has been certified gas-free and is maintained in that condition Following attentions are to be paid to operations in and near an internal insulation tank (1) For internal insulation tanks, special fire precautions are to be taken in the event of hot work carried out in the vicinity of the tanks For this purpose, gas absorbing and de-absorbing characteristics of the insulation material is to be taken into account (2) For internal insulation tanks, repairs are to be carried out in accordance with the procedures provided for in paragraph 4.4.7-6 18.2.6 Carriage of cargo at low temperature (IGC code 18.5) When carrying cargoes at low temperatures: (1) If provided, the heating arrangements associated with cargo containment systems are to be operated in such a manner as to ensure that the temperature does not fall below that for which the material of the hull structure is designed; (2) Loading is to be carried out in such a manner as to ensure that unsatisfactory temperature gradients not occur in any cargo tank, pipes, or other ancillary equipment; and (3) When cooling down tanks from temperatures at or near ambient, the cool-down procedure laid down for that particular tank, pipes and ancillary equipment are to be followed closely 18.2.7 Protective equipment (IGC code 18.6) Personnel are to be made aware of the hazards associated with the cargo being handled and are to be instructed to act with care and use the appropriate protective equipment as mentioned in 14.2.2 during cargo handling 18.2.8 Systems and controls (with reference to IGC code 18.7) Cargo emergency shutdown and alarm systems involved in cargo transfer are to be tested and checked before cargo handling operations begin Essential cargo handling controls are also to be tested and checked prior to transfer operations 113 tcvn 6259 -8d: 2003, Chapter 18 18.2.9 Cargo transfer operations (IGC code 18.8) Transfer operations including emergency procedures are to be discussed between the crew and the persons responsible at the shore facility prior to commencement and communications maintained throughout the transfer operations The closing time of the valve referred to in 13.3.1 (i.e time from shutdown signal initiation to complete valve closure) is not to be greater than: 3600U LR (sec) Where : U : Ullage volume at operating signal level (m3) LR : Maximum loading rate agreed between the ship and shore facility (m3/h) The loading rate is to be adjusted to limit surge pressure on valve closure to an acceptable level taking into account the loading hose or arm, the ship and the shore piping systems where relevant 18.2.10 Additional operating requirements (with reference to IGC code 18.9) Additional operating requirements will be found in the following paragraphs of this Chapter: 1.2, 3.9, 7.3, 8.6, 13.7, 14.5, 15.2, and 17.22 114 tcvn 6259 -8D: 2003, Chapter 19 Chapter 19 MINIMUM REQUIREMENTS (with reference to IGC code Chapter 19) 19.1 General 19.1.1 Application The requirements of columns "c" to "h" of Table 8D/19.1 are applied to ship depending on the products to be carried according to the provisions which refer to Table 8D/19.1 in each previous chapter The symbols of each column are as follows: (1) Products (column a) : the names of products are identical with those given in the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in bulk (IGC code) (2) UN Numbers (column b) : The UN numbers as listed in Table 8D/19.1 are intended for information only (3) Ship type (column c) : See 2.1.2 (4) Independent tank type C required (column d) : "-" means not required this tank type (5) Control of vapour space within cargo tanks (column e) : "-" means no special requirements (6) Vapour detection required (column f ) : F : Flammable vapour detection T : Toxic vapour detection O : Oxygen analyser F+T: Flammable and toxic vapour detection (7) Gauging (column g) : Types permitted are follows: I: Indirect or closed, as described in 13.2.2-1(1) and (2) C: Indirect, or closed, as described in 13.2.2-1(1), (2) and (3) R: Indirect, closed or restricted, as described in 13.2.2-1(1), (2) and (4) (8) MFAG numbers (column h) : MFAG numbers are provided for information on the emergency procedures to be applied in the event of an incident with the products covered by this Part of the Rules Where any of the products listed are carried at low temperature from which frostbite may occur, MFAG No 620 is also applicable (9) Special requirements (column i) : The paragraph in "( )" is indicated the paragraph of IGC Code 19.1.2 Gas mixtures containing acethylenes Unless otherwise specified, gas mixtures containing less than 5% total acetylenes may be transported with no further requirements than those provided for the major components 115 Table 8D/19.1(1) Acetaldehyde 1089 Amoniac anhydrous 1005 Buta½iene 1010 Butan 1011 Butane-propane mixtures 1011/1978 Types of ships 2G/ 2PG 2G/ 2PG 2G/ 2PG 2G/ 2PG 2PG 2PG 2G/ 2PG d e Control of vapour space within cargo tanks f g h i Special Requirements Gauging UN Number c MFAG Table No − Inert F+T C 300 − − T C 725 − − F+T R 310 − − F R 310 − − F R 310 − − F R 310 Vapour detection Production name b Independent tank type C required a Summary of minimum requirements Butylenes 1012 Chlorine 1017 1G Yes Dry T I 740 Diethyl ether 1155 2G/ 2PG − Inert F+T C 330 Dimethylamine 1032 2G/ 2PG − − F+T C 320 Ethane 1961 2G − − F R 310 ethyl chloride 1037 2G/2PG − − F+T R 340 Ethylene 1038 2G − − F R 310 14.4.3 (14.4.3), 14.4.4 (14.4.4), 17.4.1 (17.4.1) 17.6.1(1) and 17.22.3(1) (17.6.1) 14.4.2 (14.4.2), 14.4.3 (14.4.3), 14.4.4 (14.4.4), 17.2.1(1) (17.2.1), 17.13 and 17.22.8 (17.13) 17.2.1(2) (17.2.2), 17.4.2 (17.4.2), 17.4.3 and 17.22.2 (17.4.3), 17.6.1 and 17.22.3 (17.6), 17.8.1 and 17.22.4 (17.8) 14.4 (14.4), 17.3.2 (17.3.2), 17.4.1 (17.4.1), 17.5 (17.5), 17.7 (17.7), 17.9 (17.9), 17.14 and 17.22.9 (17.14) 14.4.2 (14.4.2), 14.4.3 (14.4.3),17.2.1(6) (17.2.6), 17.3.1 (17.3.1), 17.6.1 (1) and 17.22.3 (1) (17.6.1), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.15 (17.15) 14.4.2 (14.4.2), 14.4.3 (14.4.3), 14.4.4 (14.4.4), 17.2.1(1) (17.2.1) c Production name UN Number Types of ships d e f Vapour detection g h i Gauging b Type C independent tanks required a Summary of minimum requirements Control of vapour space within cargo tanks Table 8D/19.1(2) MFAG Table No Special Requirements 14.4.2 (14.4.2), 14.4.3 (14.4.3), 14.4.4 (14.4.4), 14.4.6 (14.4.6), 17.2.1-1(2) (17.2.2), 17.3.2 (17.3.2), 17.4.1 (17.4.1), 17.5 (17.5), 17.6.1 (1) and 17.22.3 (1) (17.6.1), 17.16 and 17.22.10 (17.16) 14.4.3 (14.4.3), 17.3.1 (17.3.1), 17.4.1 (17.4.1), 17.6.1 (1) and 17.22.3 (1) (17.6.1), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.20 and 17.22.12 (17.20) 14.4.3 (14.4.3), 17.8 and 17.22.4 (17.8), 17.10 and 17.22.5 (17.10), 17.12 and 17.22.7 (17.12) 14.4.2 (14.4.2), 14.4 (14.4.3), 17.2.1 (4) (17.2.4), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.12 and 17.22.7 (17.12), 17.17 (17.17) Ethylene oxide 1040 1G Yes Insert F+T C 365 Ethylen oxide-propylene oxide mixtures with ethylene oxide content of not more than 30% by weight* 2983 2G/ 2PG − Insert F+T C 365 Isoprene* 1218 2G/ 2PG − − F R 310 Isopropylamine* 1221 2G/ 2PG − − F+T C 320 Methane (LNG) 1972 2G − − F C 620 Methyl acetylene-propandiene mixtures 1060 2G/ 2PG − − F R 310 17.18 & 17.22.11 (17.18) Methyl Bromide 1062 1G _ − F+T C 345 14.4 (14.4), 17.2.1 (3) (17.2.3), 17.3.2 (17.3.2), 17.4.1 (17.4.1), 17.5 (17.5), 17.9 (17.9) Methyl Chloride 1063 2G/ 2PG − − F+T C 340 17.2.1 (3) (17.2.3) Monoethylamine* 1036 2G/ 2PG Yes − F+T C 320 14.4.2 (14.4.2), 14.4.3 (14.4.3), 14.4.4 (14.4.4), 17.2.1(1) (17.2.1), 17.3.1 (17.3.1), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.12 and 17.22.7 (17.12), 17.17(17.17)_ Nitrogen 2040 3G − − C 620 17.19 (17.19) Pentanes (all isomers)* 1265 − − F R 310 Pentene (all isomers)* 1265 − − F R 310 Propane 1978 − − F C 310 2G/ 2PG 2G/ 2PG 2G/ 2PG 14.4.4 (14.4.4), 17.10 and 17.22.5 (17.10), 17.12 and 17.22.7 (17.12) 14.4.4 (14.4.4), 17.10 and 17.22.5 (17.10), 17.12 and 17.22.7 (17.12) g h i Vapour detection Gauging a b c d e Production name UN number Types of ships Control of vapour space within cargo tanks Summary of minimum requirements Independent tank type C required Table 8D/19.1(3) f MFAG o Table N Special requirements 2G/ 2PG 2G/ 2PG − − F R 310 − Inert F+T C 365 Propylene 1077 Propylene oxit * 1280 Refrigerant gases (see Notes) − 3G − − − R 350 Sulphur dioxide 1079 1G Yes Dry T C 635 Vinyl Cloride 1086 2G/ 2PG − − F+T C 340 Vinyl ethyl ether * 1302 2G/ 2PG − Inert F+T C 330 Vinylidene chloride* 1303 2G/ 2PG − Inert F+T R 340 Other liquefied gases having same hazard of the products listed above 14.4.3 (14.4.3), 17.3.1 (17.3.1), 17.4.1 (17.4.1), 17.6.1(1) and 17.22.3(1) (17.6.1), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.20 and 17.22.12 (17.20) 14.4 (14.4), 17.3.2 (17.3.2), 17.4.1(17.4.1), 17.5 (17.5), 17.7 (17.7), 17.9 (17.9) 14.4.2 (14.4.2), 14.4.3 (14.4.3), 17.2.1 (2) (17.2.2), 17.2.1(3) (17.2.3), 17.3.1 (17.3.1), 17.6.1 and 17.22.3 (17.6), 17.21 and 17.22.13 (17.21) 14.4.2 (14.4.2), 14.4.3 (14.4.3), 17.2.1 (2) (17.2.2), 17.3.1 (17.3.1), 17.6.1(1) and 17.22.3(1) (17.6.1), 17.8 and 17.22.4 (17.8), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11), 17.15 (17.15) 14.4.2 (14.4.2), 14.4.3 (14.4.3), 17.2.1(5) (17.2.5), 17.6.1(1) and 17.22.3(1) (17.6.1), 17.8 and 17.22.4 (17.8), 17.10 and 17.22.5 (17.10), 17.11 and 17.22.6 (17.11) Requirements provided individually by VR in accordance with characters of cargoes Notes: Refrigerant gases: Non-toxic and non-flameble gases such as: Dichloro½ifluoromethan (1028) Dichloromonofluoromethan (1029) Dichlorotetrafluoroethan (1958) Monochloro½ifluoromethan (1018) Monochlorotetrafluoroethan (1021) Monochlorotrifluoromethan (1022) *: This cargoes covered in Part 8E ... kắt, vch chn thử cảp ẵừỡc qui ẵnh theo Băng 8D/4.2 Vối nhựng kắt khc biẻt vối nhựng loi kắt cỗ băn qui ẵnh 4.2, nhựng yu cÃu ẵõi vối vch chn thử cảp phăi ½õìc ‡¯ng kiÌm qui ½Ùnh t÷ng trõéng hìp... lúc thðy tØnh qui ½Ùnh ê 4.10.10 (3) (a), bng cch dùng p suảt lốn hỗn p suảt thứ qui ẵnh 4.10.10 (3) (a) Cỏng chảt ẵè to p lỳc phăi lĂ nừốc (3) õi vối nhiẻt ẵổ ca nừốc, phăi p dũng qui ẵnh 4.10.10... lágic VÙ trÏ ½´t cŸc ½ãng hã ẵo biặn dng phăi ẵừỡc nu qui trệnh khứ ửng suảt dừ bng xứ lỷ cỗ ẵừỡc trệnh duyẻt theo qui ½Ùnh ê 4.11.2 (14) (8) Qui trƯnh khø phăi chửng minh ẵừỡc rng s ẵt ẵừỡc mõi