Cargo careWhat is putrefaction process of liquid chemicals ?Most animal and vegetable oils undergo decomposition over time, a natural process known as putrefaction (going off), that generates obnoxious and toxic vapours and depletes the oxygen in the tank. Tanks that have contained such products must be carefully ventilated and the atmosphere tested prior to tank entry . .....

Carriage of inhibited flammable chemical products in cargo tanksIn certain conditions of heat, pressure and in the presence of Oxygen, some chemical cargo types can become viscous and possibly solid and dense in nature. This self reaction can cause some cargoes , especially in the presence of high temperatures and Oxygen, to begin an exothermic reaction, becoming self heating and rapidly expanding which may result in possibly disastrous consequences for the vessel.

Cargo sampling safety precautionsCargo samples are evidence of the condition of the product during the various phases of transport (storage at terminal, arriving on board, loading, passage, discharging). This procedure describes sample-taking procedures and the legal background. Suitable PPE is to be worn when taking samples. Sample bottle to be flushed prior collecting sample. .....

Cargo segregation requirement for chemical tankersIn the case of two or more liquid chemical cargoes which react with one another in a hazardous manner, segregation must be done The product data sheets, together with the BCH/IBC Codes are to be studies carefully to determine the compatibility restrictions when carrying different groups of cargoes.

How to avoid solidification in cargo tanks ?Solidification in the cargo tanks can occur when solidifying cargoes are stowed adjacent to cold cargoes or cold ballast water in adjacent spaces.

Cargo compatibility and reactivity of various chemical cargoTransporting of dangerous and noxious liquid chemicals in bulk involved various risk factors. Between some chemicals violent reactions may occur if the chemicals are mixed in certain proportions. The result may possibly be an eruption and tank rupture. Such an occurrance must be prevented. Water may also have to be considered in this respect.

Determining presence of contaminants in chemical cargoTo maintain product quality onboard modern chemical tankers any contaminants in the cargo need to be observed. Following guideline may be useful determining various product contaminants in noxious liquid chemicals.

Cargo compatibility chart for handling dangerous liquid chemicals in bulkThe following procedure explains how the compatibility chart should be used to find compatibility information: .....