Moisture Inside Container Come From

- Oct 07, 2019-

Moisture Inside Container Come From These Place


The water in the container depends on the weather conditions, the length of the voyage, the packaging of the goods, the condition of the container and the sensitivity of the goods. Fungi, mold, and mildew can cause damage to the cargo when the relative humidity exceeds 55%.

There are several types of water in the container: the goods are self-contained, the tank is condensed, the seawater is dip, and the fresh water is dip.


1, the goods come with


Moisture or moisture is brought into the container along with the cargo. For example, if a container contains 5 tons of furniture, the furniture itself will contain about 8% to 25% humidity, depending on the type of wood and the degree of drying of the furniture. This is equivalent to about 400-1250 liters of water. Some of the moisture here will be released into the air inside the container, which becomes an important source of container condensation.


2, the box condensation


In the ocean transportation or storage process of containers, containers often experience high temperature climate and strong temperature difference between day and night. The temperature change will be 0-8 degrees Celsius and the humidity will be as high as 98%. This is the condensation phenomenon when the temperature is 30 degrees. The air content in the air is 30.4 g per square meter. When the temperature is lowered from 30 degrees Celsius to 18 degrees Celsius, water vapor will condense into water droplets. If a 40-foot container produces 1000 grams of condensed water, it will cause "container rain."


3, sea water into the dip


Often drifting at sea, how can we not wet the box? If there is a big wind and big waves, if there is a small damage to the box, if it is on the deck, or if it encounters a sea accident and falls into the sea, it will not run into the sea or the damp. This is not much to say.


4, fresh water into the dip


If the top or side panels, front panels, door panels, door rubber strips, etc. of the box are damaged, water ingress may occur during rain or snow or when the ship's fresh water pipe is broken. Recently, the typhoon is intensive, and the north and south of the river are stormy and rainy.


Insurance correspondence


Freshwater rain: One of the general additional risks, responsible for compensation for losses caused by fresh water (including drinking water on board, water leaks from pipes, drips, etc.), rain and snow-soluble water.


Humidity and heat insurance: Responsible for compensation for the loss caused by sudden changes in temperature during the transportation of the insured goods or due to condensation, moisture or heat in the cabin due to failure of ventilation equipment on board.


WPA: It is a separate marine loss insurance. It is one of the basic risks of seaborne cargo. It is only responsible for the losses caused by salt water and is not responsible for the compensation for losses caused by fresh water.


Moisture Prevention 

1. Moisture and water damage can be prevented.


2. Check whether the container is sealed and dry before packing.


3. Confirm whether the goods and loading environment are dry;


4. Strengthen the waterproof packaging of goods;


5. Reasonably place the desiccant in the box;


6, the entire process of visual tracking of goods.


7. All aspects of cargo transportation need to be controlled in real time, and the whole process should be visualized as much as possible, and various documents should be kept in case of emergency.