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Welcome to Liquef Action.. The Liquef Action project addresses the problem of iron ore fine cargo liquefaction on board bulk carriers under certain conditions. In the past these lead to fatal accidents and a significant number of ships were lost in the short period between 2007 and 2013 only.Learn More
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Liquefaction of cargo in a bulk carrier can cause the cargo to shift, which in turn can cause a ship to list and eventually can cause the ship to capsize. when liquefaction occurs, a material undergoes a transition from a solid to a liquid state and, in general, it is caused by the pore water pressure increasing above the total stress and ...
Oct 10, 2007 various types of iron ore may fall into this category including iron ore fines, sinter feed and pellet feed. the bc code goes on to say that a cargo shift caused by liquefaction may occur when the moisture content exceeds the transportable moisture limit tml .
Liquefaction of iron ore fines was implicated in the sinking of mv black rose in september 2009 with the death of the ships chief engineer as he desperately tried to save the vessel. mv asian forest , which sank in july 2009 off mangalore and remains off the indian coast, was another victim of
The circular also follows a period of significant comment on ore cargoes generally and the risks of liquefaction posed in the transportation of such cargoes. five bulk carriers have been lost over the past two years following what is widely assumed to have been the liquefaction of their cargoes of nickel ore.
Aug 08, 2019 the understanding of the nature of liquefaction as well as microscopic and macroscopic behavior of the material when liquefied, led us to identify the critical parameters that cause cargo liquefaction. the cargoes which are more susceptible to liquefaction are iron ore fines and nickel ore even though any granular cargo may liquefy.
The three largest iron ore producers, with the support of their respective competent authorities, formed a technical working group twg to coordinate research into the transportation of iof with a common aim of ensuring the safe shipping of iron ore fines. twg was
Liquefaction is a frequently occurring problem taking place when transporting wet granular solid bulk cargoes on board bulk carriers. liquefaction of a solid bulk cargo can occur when excessive dynamic loading, induced by rough seas and vessel vibrations, is transmitted to the cargo. from 1988 to 2015, there have been 24 suspected liquefaction incidents reported, which resulted in 164 ...
Loading iron ore fines in india, again suffering liquefaction of the cargo. masters, ships officers and chartering managers should understand the dangers of liquefaction of certain cargos usually wet mineral ore fines, but also other cargos such as coal slurry and wet sand. the international association of dry cargo shipowners intercargo
Sep 25, 2020 cargo liquefaction liquefaction is a phenomenon in which solid bulk cargoes are abruptly transformed from a solid dry state to an almost fluid state. many common bulk cargoes such as iron ore fines, nickel ore and various mineral concentrates are examples of materials that may liquefy.
What causes liquefaction cargo liquefaction is the conversion in behaviour of a substance from solid to liquid state. it occurs due to reduction of pore space between fine particles in cargoes such as nickel ore and iron ore due to the motion of a ship. cargo is prone to liquefy where there is a high proportion of fine particles and a moisture ...
Jan 01, 2011 the cause of the sinkings has not yet been definitively determined but nickel ore, like iron ore fines and many concentrates, is a cargo which may liquefy, if the moisture content of the cargo exceeds the transportable moisture limit tml when loaded. ... liquefaction of some ore cargoes can be caused by the normal incidents of a sea voyage ...
Iron ore fines. iron ore fines is a grey rusty-red coloured fine sized material, shipped in bulk. incidents with liquefying cargo on board seagoing vessels have been reported with iron ore fines loaded at the indian ports of mangalore and paradip. iron ore is a natural material that is mined all around the world.
Iron ore concentrates iocs are considered as dangerous cargo during shipping since liquefaction may easily occur under dynamic loads and cause marine casualty.
Iron ore, nickel ore, coal slurry, sand slurry, and other wet minerals or fines are all susceptible. liquefaction is a particularly dangerous issue as it turns what appears to be an apparently safe cargo into something that can have a significantly detrimental effect on a vessels stability.
Oct 14, 2020 nickel ore is considered as the worlds most dangerous cargo. concerning the philippines, there is a number of concerns, mines stock pile nickel ore in open conditions on or near the foreshore, there are no actual piers or port facilities at the locations and the ore is loaded offshore at anchor via barges.
8 hours ago bimco attended a very useful webinar on understanding liquefaction risks associated with the carriage of group a cargoes in the international maritime solid bulk cargoes imsbc code.
Nov 13, 2018 the known or suspected cause of these tragic losses was cargo liquefaction. in all but one case, the lost ship was carrying one of three cargoes iron ore fines nickel ore, or bauxite. hui long was carrying a cargo of fluorspar mineral.
May 04, 2020 cargo failure i.e. liquefaction and delays in casualty investigation reporting continue to be a major safety concern for dry bulk shipping, intercargo said in its annual casualty report.
Abstract. solid bulk cargoes have been known to liquefy in the holds of bulk carriers since the loss of the bengal in 1910. because of the increased demand for iron ore fines over the past 20 years, export industries have experienced further incidents where liquefaction of the cargo was the suspected cause.
The transportable moisture limit of cargo is the maximum gross water content by weight that liquefiable solid bulk cargo may contain during transport without risk of liquefaction. the liquefaction phenomenon can see materials, most commonly iron ore fines, nickel ore and various mineral concentrates, transform from a solid dry state to ...
Sep 09, 2020 the liquefaction of the iron ore fines during shipping question. 1 answer. nov 25, 2019 dear scholars. i have a problem that needs to be solved. i hope i
Iron ore concentrates dynamic centrifuge model liquefaction ore motion moisture migration critical moisture content potential munro and mohajerani, 2016a. according to wang et al. 2016, the degree of saturation and potential volumetric strain can be used as parameters to control the resistance against liquefaction of unsaturated iron ores.
Posted to liquefaction of iron ore cargo caused vessel to list amp ground by joseph fonseca on january 20, 2010 report of the investigation into the listing and grounding of m.v. black forest reveals that the accident was the result of liquefaction of cargo - iron ore fines
Liquefaction is a phenomenon in which a soil-like material is abruptly transformed from a solid dry state to an almost fluid state. many common bulk cargoes, such as iron ore fines, nickel ore and various mineral concentrates, are examples of materials that may liquefy. if liquefaction occurs on board a vessel, the stability
To avoid accidents due to nickel ore liquefaction please read the following safe carriage of nickel ore safe loading in cargo in bulk of nickel ore. 3. iron ore fines and iron concentrate sinter feed iron ore fines are iron ore with a large proportion of small particles 10