However, these products are very susceptible to temperature and humidity changes, which can lead to stricter ventilation guidelines and storage requirements. If due to any reason it is not possible to take readings within the hold then ‘three degree rule’ can be used; These changes can lead to cargo sweat especially when the cargo contains hygroscopic material.
REEDS Maritime Meteorology M. M. Cornish, E. E. Ives
Cargo sweat would occur on the surface of the cargo if relatively warm moisture laden air was admitted.
Grain, flour, tobacco, etc, and concentrates, coal etc.
Organic matter, such as grains, animal feed, seed cake, timber or wood pulp, may decompose or ferment when exposed to sweat. You can find more information about cargo ventilation in the pdf below Such cargoes are mainly of vegetable origin, e.g. Hygroscopic cargoes are those which have an inherent moisture content that can interact with the air.
Typical moisture collection is due to condensation;
Agricultural cargoes are hygroscopic, meaning that they have a moisture content that can interact with f the air. A hygroscopic cargo is defined as a cargo _____. Moisture is easily removed by passing a sufficient stream of warm air over the material One of the important aspects of transporting cargo on ships is to prevent any kind of damage to the cargo.
Certain cargo shipments produce dust that can also pose a health hazard.
There is a danger of heavy cargo sweat if the outside air is introduced by ventilation. Ventilation mitigates risks “cargo hold ventilation is the established means to mitigate these risks,” explains ed wroe from intercargo. Cargo sweat is liable to occur if warm moist air comes into contact with cold cargo. These include cocoa, coffee, tea, tobacco, dried fruit, rice, nuts, oil seeds, pulses and spices.
It is important to take proper care of the cargo on board ships to avoid loss of property and avoid cargo claims.
There is a danger of heavy cargo sweat if the outside air is introduced by ventilation. During loading regular cargo temperatures should be recorded. Fresh fruit and vegetables are more commonly carried in refrigerated. Or products that are packed in hygroscopic material such as wood or paper can also be harmed when exposed to excess moisture.
Conversely, if the air has low relative humidity in comparison to the
The excess water can further spoil the cargo by spreading moisture in the cargo. A and b is correct b. Where a cargo may be liable to spontaneous combustion, ventilation in certain circumstances may even be dangerous. I the air in the cargo hold has high relative humidity in comparison with the moisture content of the cargo, then the cargo will absorb moisture from the air.
24 hazards 24 safe practice 24 8 case studies 26 case study 1 26
Any moisture collected is adsorbed on the surface of the pellet; Hygroscopic products include grain, rice, flour, sugar, cotton, tobacco, cocoa, coffee and tea. Not ventilate the cargo holds 71 hygroscopic cargoes should be ventilated when _____. Cargo which readily absorbs, contains and gives off moisture, are called hygroscopic cargo.
Steel) may be damaged if stowed in a moist environment, and others may be harmed if packaged u s in g ah yr oc pmt e(.
The development of significant ship sweat is very unlikely.
