Graphic description of the gas detector used in an oxygen-deficient environment
Ballast Tank
It is a floating and submerging cabin that takes in water and drains water alternately in order to adjust the center of gravity of the ship. The internal iron plates are oxidizing at an astonishing speed.
Moreover, the respiration of deposited fruits and shellfish, as well as the vaporization of dry ice used for refrigeration, all consume a large amount of oxygen. Therefore, the air inside the cabin is often in a state of oxygen deficiency.
Sewer
The sediment in the sewer contains animal proteins, sulfates and sodium sulfide from various treatment plants and laboratories, amino acids from food factories, etc., all of which actually contain many components. Sulfates and sodium sulfide are likely to produce hydrogen sulfide. Additionally, since the oxygen in the air is used for respiration, it increases the dual risks of hydrogen sulfide poisoning and oxygen deficiency in the originally enclosed sewer with poor ventilation.
Storage Bins and Manholes
In the raw water tanks of terminal treatment plants, rainwater pits, and inside manholes, the decay of water and the consumption of oxygen lead to the proliferation of aerobic bacteria, which easily causes incidents of oxygen deficiency and hydrogen sulfide poisoning. Breathing in air with a high concentration of hydrogen sulfide and a lack of oxygen can make a person lose consciousness with just one breath. At that time, there is a great risk of drowning after falling into the water.
