How to ensure the stability of foam in the process of extinguishing fire in ship's foam tank?

The key to ensure the stability of ship foam tank during fire extinguishing is to ensure the quality of foam formation and maintain the efficiency of foam coverage. Here are some specific measures:

1、 From the quality of foam formation, the ship's foam tank and its related equipment must be kept intact and closely connected. Specifically:

The foam tank itself shall be intact without leakage or deformation to store and supply high-quality foam extinguishing agent.

The foam proportioner, pipes, nozzles and other components shall be connected tightly without leakage to ensure that foam concentrate and water can be mixed accurately according to the preset proportion.

The foam extinguishing agent used shall comply with relevant standards and shall not be expired or deteriorated.

2、 From the perspective of foam coverage efficiency, the following measures can be taken to ensure the stability of foam:

Before extinguishing the fire, calculate and determine the required ratio of foam solution and water, as well as the corresponding pump parameters, to ensure that the foam generation is sufficient and stable.

When spraying foam, spray it along the inner wall of the tank or against the oil surface as far as possible to reduce the damage of high flame temperature to sprayed foam.

Properly swing the foam gun to speed up the flow of foam to facilitate the coverage effect of foam. At the same time, it shall be ensured that foam can be evenly covered on the fire site to avoid too much or too little foam in local areas.

3、 The use and maintenance of ship foam tank is also the key to ensure the stability of foam:

When using the ship's foam tank, it must be operated correctly according to the requirements in the instructions, and the pressure and foam spraying time cannot be adjusted at will.

Regularly inspect and maintain the ship's foam tank and its related equipment, including cleaning the foam tank, checking whether the nozzle is blocked, replacing damaged parts, etc.

Ensure that the power supply and water supply system of the foam extinguishing system are stable and reliable, so that it can be quickly started and sufficient foam extinguishing agent can be supplied in case of fire. How to ensure the stability of foam?