MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ...

MSC 85/26/Add.2ANNEX 3Page 155DIRECT REDUCED IRON (B)Lumps, pellets, cold-moulded briquettesDESCRIPTIONDirect reduced iron (DRI) (B) is a highly porous, black/grey metallic material formed by thereduction (removal of oxygen) of iron oxide at temperatures below the fusion point of iron.Cold-moulded briquettes are defined as those which have been moulded at a temperature lessthan 650 o C or which have a density of less than 5,000 kg/m 3 . Fines and small particlesunder 6.35 mm in size shall not exceed 5% by weight.CHARACTERISTICSANGLE OF REPOSE BULK DENSITY (kg/m 3 ) STOWAGE FACTOR (m 3 /t)Not applicable 1750 to 2000 0.5 to 0.57SIZE CLASS GROUPLumps and pellets:Average particle size 6.35 mmto 25 mm.Cold-moulded briquettes:Approximate maximumdimensions 35 mm to 40 mm.Fines and small particles under6.35 mm up to 5% by weight.MHBBHAZARDTemporary increase in temperature of about 30 o C due to self-heating may be expected aftermaterial handling in bulk.There is a risk of overheating, fire and explosion during transport. This cargo reacts with air andwith fresh water or seawater to produce heat and hydrogen. Hydrogen is a flammable gas thatcan form an explosive mixture when mixed with air in concentrations above 4% by volume. Thereactivity of this cargo depends upon the origin of the ore, the process and temperature ofreduction, and the subsequent ageing procedures. Cargo heating may generate very hightemperatures that are sufficient to ignite the cargo. Build-up of fines may also lead toself-heating, auto-ignition and explosion. Oxygen in cargo spaces and enclosed spaces may bedepleted.STOWAGE & SEGREGATION“Separated from” goods of classes 1 (division 1.4S), 2, 3, 4 and 5, and class 8 acids in packagedform (See IMDG Code).“Separated from” solid bulk materials of classes 4 and 5.Goods of class 1, other than division 1.4S, shall not be carried in the same ship.Boundaries of compartments where this cargo is carried shall be resistant to fire and passage ofliquid.I:\MSC\85\26-Add-2.doc