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Article covers summary of minimum requirements for ships carrying LNG and LPG .
Explanatory Notes to the Summary of Minimum Requirements MFAG numbers are provided for information on the emergency procedures to be applied in the event of an incident with the products covered by the IGC Code . Where any of the products listed are carried at low temperature from which frostbite may occur MFAG No. 620 is also applicable.
UN -numbersb ): The UN -numbers listed in column (b ) of the list of products are intended for information only.
LNG “Marvel Eagle” Vapour detectionrequired (column f ):
F – Flammable vapour detection; T – Toxic vapour detection; O – Oxygen analyser; F + T – Flammable and toxic vapour detection. Gauging – typespermitted (column g ):
Pollution category : Pollution category according to Questions and answers to CES about International Convention for the Prevention of Pollution from Ships MARPOL 73/78
Refrigerant gases : Non toxic and non-flammable gases are e.g.:
Product name UN -No.Chemical formula Density [kg/m3 ] Boiling point [°C] Dichlorodifluoromethane (R 12 ) 1028 CCl2 F2 1487 -30 Dichloromonofluoromethane (R 21 ) 1029 CHCl2 F 1410 9 Dichlorotetrafluoroethane (R 114 ) 1958 CCl F2 – CCI F2 1510 3,6 Monochlorodifluoromethane (R 22 ) 1018 CHCl F2 1414 -41 Monochlorotetrafluoroethan (R 124 ) 1021 CHCl F – CF3 Monochlorotrifluoromethane (R 13 ) 1022 CCl F3 1526 -81,4
Gas mixtures : Unless otherwise specified, gas mixtures containing less than 5 % total acetylenes may betransported with no further requirements than those provided for the major components.
Guidance : Products to which an asterisk * is affixed, are also covered by Rules for Ships Dangerous Chemicals In Bulk (Part 1,Vol.X). The values given in columns (j) – (n) are for guidance. The guidance values for the product density are related to the boiling point.
Table 1. List of Products (columns a – h ) a b c d e f g h Product Name UN-No. Ship type Type C Independent tank required Control of vapour space within cargo tanks Vapour detection Gauging MFAG -No.Acetaldehyde 1089 2 G/2 PG – Inert F + T C 300 Ammonia, anhydrous 1005 2 G/2 PG – – T C 725 Butadiene 1010 2 G/2 PG – – F + T R 310 Butane 1011 2 G/2 PG – – F R 310 Butane-propane 1011/1978 2 G/2 PG – – F R 310 Butylenes 1012 2 G/2 PG – – F R 310 Carbon dioxide – 3 G Yes – – C – Chlorine 1017 1 G Yes Dry T I 740 Diethyl ether* 1155 2 G/2 PG – Inert F + T C 330 Dimethylamine 1032 2 G/2 PG – – F + T C 320 Dimethyl ether – 2 G/2 PG – – F + T C – Ethane 1961 2 G – – F R 310 Ethyl chloride 1037 2 G/2 PG – – F + T R 340 Ethylene 1038 2 G – – F R 310 Ethylene oxide 1040 1 G Yes Inert F + T C 365 Ethylene oxide/propylene oxide mixtures (max. 30 % by weight ethylene oxide)* 2983 2 G/2 PG – Inert F + T C 365 Isoprene* 1218 2 G/2 PG – – F R 310 Isopropylamine* 1221 2 G/2 PG – – F + T C 320 Methane (LNG ) 1972 2 G – – F C 620 Methyl acetylenepropadiene mixtures 1060 2 G/2 PG – – F R 310 Methyl bromide 1062 1 G Yes – F + T C 345 Methyl chloride 1063 2 G/2 PG – – F + T C 340
Table 2. List of Products (columns i – o ) a i j k l m n o Product Name Special requirements Chemical formula Density [kg/m3 ] Boiling-point [°C] Flash-point [°C] Auto-ignition temperature [°C] Pollution category Acetaldehyde Personnel protection requirements for individual products , Personnel protection requirements for individual products , Refrigeration systems , Exclusion of air from vapour spaces CH3 CHO 780 21 -27 140 – Ammonia, anhydrous Personnel protection requirements for individual products , Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Ammonia NH3 680 -34 – 630 – Butadiene Materials of construction , Refrigeration systems , Refrigeration systems , Refrigeration systems , Exclusion of air from vapour spaces , Inhibition CH2 CHCHCH2 650 -4,5 -85 415 – Butane C4 H10 600 -0,5 -60 365 – Butane-propane mixtures 630 -50 – Butylenes 630 -6,3 -75 440 – Carbon dioxide CO2 -79 – – – Chlorine Personnel protection requirements for individual products , Independent tanks , Refrigeration systems , Deck cargo piping , Moisture control , Permanently installed toxic gas detectors , Chlorine Cl2 1560 -34 – – – Diethyl ether* Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Independent tanks , Exclusion of air from vapour spaces , Flame screens on vent outlets , Maximum allowable quantity of cargo per tank , Diethyl ether and vinyl ethyl ether C2 H5 OC2 H5 700 34,5 -45 180 – Dimethylamine Personnel protection requirements for individual products , Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction (CH3 )2 NH 670 7 -18 400 – Dimethyl ether (CH3 )2 O 735 -24,8 -42,2 240 – Ethane C2 H6 550 -88 -183 515 – Ethyl chloride C2 H5 Cl 890 12 -50 510 – Ethylene C2 H4 560 -104 -136 425 – Ethylene oxide Personnel protection requirements for individual products , Personnel protection requirements for individual products , Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Independent tanks , Refrigeration systems , Deck cargo piping , Exclusion of air from vapour spaces , Ethylene oxide (CH2 )2 O 870 11 -18 440 – Ethylene oxide/propylene oxide mixtures (max. 30 % by weight ethylene oxide)* Personnel protection requirements for individual products , Independent tanks , Refrigeration systems , Exclusion of air from vapour spaces , Flame screens on vent outlets , Maximum allowable quantity of cargo per tank , Propylene oxide and mixtures of ethylene oxide/propylene oxide with ethylene oxide content of not more than 30 % by weight (CH2 )2 O+CH3 CHOCH2 830 27 -20 430 C Isoprene* Personnel protection requirements for individual products , Inhibition , Flame screens on vent outlets , Submerged electric cargo pumps CH2 C(CH3 )CHCH2 680 34 -48 220 C Isopropylamine* Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Flame screens on vent outlets , Maximum allowable quantity of cargo per tank , Submerged electric cargo pumps , Isopropylamine, monoethylamine (CH3 )2 CHNH2 670 32 -20 400 C Methane (LNG ) CH4 420 -163 -175 595 – Methyl acetylenepropadiene mixtures Methyl acetylene-propadiene mixtures 620 -20 – Methyl bromide Personnel protection requirements for individual products , Materials of construction , Independent tanks , Refrigeration systems , Deck cargo piping , Permanently installed toxic gas detectors CH3 Br 1730 4 – 538 – Methyl chloride Materials of construction CH3 Cl 970 -24 -24 625 –
Table 3. List of Products (columns i – o ) (continued) a b c d e f g h Product Nane UN -No.Ship type Type C Independent tank required Control of vapour space within cargo tanks Vapour detection Gauging MFAG -No.Monoethylamine* 1036 2 G/2 PG – – F R 320 Nitrogen 2040 3 G – – O C 620 Pentanes* (all isomers) 1265 2 G/2 PG – – F R 310 Pentene* (all isomers) 1108 2 G/2 PG – – F R 310 Propane 1978 2 G/2 PG – – F R 310 Propylene 1077 2 G/2 PG – – F R 310 Propylene oxide* 1280 2 G/2 PG – Inert F + T C 365 Refrigerant gases – 3 G – – – R 350 Sulphur dioxide 1079 1 G Yes Dry T C 635 Vinyl chloride 1086 2 G/2 PG – – F + T C 340 Vinyl ethyl ether* 1302 2 G/2 PG – Inert F + T C 330 Vinylidene chloride* 1303 2 G/2 PG – Inert F + T R 340
Table 4. List of Products (columns i – o ) (continued) a i j k l m n o Product Name Special requirements Chemical formula Density [kg/m3 ] Boiling-point [°C] Flash-point [°C] Auto-ignition temperature [°C] Pollution category Monoethylamine* Personnel protection requirements for individual products , Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Independent tanks , Flame screens on vent outlets C2 H5 NH2 680 17 -49 384 C Nitrogen Nitrogen N2 808 -196 – – – Pentanes* (all isomers) Personnel protection requirements for individual products , Flame screens on vent outlets , Submerged electric cargo pumps CH3 (CH2 )3 CH3 626 29-36 -49 308 C Pentene* (all isomers) Personnel protection requirements for individual products , Flame screens on vent outlets , Submerged electric cargo pumps CH3 CH2 CH2 CH = CH2 656 30-37 -18 270 C Propane C3 H8 590 -42,3 -42 470 – Propylene C3 H6 610 -48 -108 455 – Propylene oxide* Personnel protection requirements for individual products , Independent tanks , Refrigeration systems , Exclusion of air from vapour spaces CH3 CHOCH2 822 34 -20 430 C Refrigerant gases See notes – – – Sulphur dioxide Personnel protection requirements for individual products , Independent tanks , Refrigeration systems , Deck cargo piping , Moisture control , Permanently installed toxic gas detectors SO2 1460 -10 – – – Vinyl chloride Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Independent tanks , Exclusion of air from vapour spaces , Propylene oxide and mixtures of ethylene oxide/propylene oxide with ethylene oxide content of not more than 30 % by weight CH2 CHCl 970 -14 -77 472 – Vinyl ethyl ether* Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Independent tanks , Exclusion of air from vapour spaces , Inhibition , Flame screens on vent outlets , Maximum allowable quantity of cargo per tank , Diethyl ether and vinyl ethyl ether CH2 – CHOC2 H5 750 36 45 200 C Vinylidene chloride* Personnel protection requirements for individual products , Personnel protection requirements for individual products , Materials of construction , Exclusion of air from vapour spaces , Inhibition , Flame screens on vent outlets , Maximum allowable quantity of cargo per tank CH2 – CCl2 1250 32 -10 460 B
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