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Liquefaction – it’s a term used as a ‘catch-all’ phrase to describe at least two moisture-related cargo failure mechanisms. The results, however, are the same – vessel instability and ultimately the vessel sinking. Classical liquefaction Classical liquefaction occurs when moisture between the cargo particles becomes sufficiently pressurised, causing the particles to separate. “Then the cargo…
Prior Arrival Port: Pre-Transfer Meeting: Manifold Connection: Heightened level of alertness and caution must be exercised when entering and operating in this area. Adequate level of PPE must be complied with when entering these areas. Before Loading: Loading Operation: Ensure all cargo tanks nominated to load in that particular port is flushed via the suction…
SFO (Seal Flush oil) Unit: SFO unit is used to heat the cargo pump seals to the required temperature. The function of the seal flush pumps is to circulate seal flush oil (SFO) through the cargo pumps thereby heating up the cargo pump seal space and heat the remaining product in it. The SFO oil…
Bitumen is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulphide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons. Bitumen is the residual (bottom) fraction obtained by fractional distillation of crude oil. It has a specific gravity range between 1.00 to 1.04 and average volatility. It is…
Records of the operations done with noxious liquids are to be maintained to provide evidence of the processes that were followed to ensure that no pollution was caused. MARPOL 73 / 78, annex II deals with noxious liquids carried in bulk. The student is advised to keep a copy of MARPOL handy while studying the…
•Timber – means sawn wood or lumber, cants, logs, poles, pulpwood and all other types of timber in loose packaged forms but not including wood pulp or similar cargo. •Cant – means a log that is cut in slabs, so that two opposite or sometimes three sides are flat and the other(s) curved. •Timber Deck…
System as per my present vessel The automatic cargo stripping system is provided to improve the efficiency of stripping the cargo oil tanks and to assist in the maintenance of high bulk rate discharge. It utilises the cargo oil pumps to complete the stripping operation which reduces unloading time. The operation is fully automated. The…
System described basis my present vessel FULL DISCHARGE The following factors are to be considered prior to a full discharge: • Maximum available draught at the berth • Maximum allowable freeboard on the berth • Grade segregation, if carrying multiple grades • Crude oil washing requirements • Heavy weather ballast requirements • Maintenance of satisfactory…
Below loading is explained basis my present vessel. See the diagram for better understanding. The cargo oil tanks are divided into three segregations or groups which can be used either individually or combined to permit the loading of the nominated quantities. Group 1 consists of No.1, No.4 COTs and the starboard slop tank Group 2…
System explained basis my present vessel Cargo oil tanks are crude oil washed to comply with both legislation (contingency ballast requirements) and charterer’s requirements in order to achieve maximum out-turn. This would usually be No.4 COT port and starboard (nominated heavy weather ballast tanks) and one quarter of the remainder. However, no tank requires to…