Nitrogen (N2) is a colorless, odorless gas at normal temperature and pressure. Nitrogen in the air accounts for 78% to 80%. The relative molecular mass is 28.0134, and the boiling point is 195.8°C. Insoluble in water. When the nitrogen content in the air increases (>84%), the oxygen in the air can be eliminated, causing insufficient inhalation of oxygen, and people feel shortness of breath and a sense of suffocation. High concentrations of nitrogen (>Hypoxia, characterized by symptoms and signs such as headache, nausea, vomiting, chest tightness, chest pain, and cyanosis, can be caused by a decrease in oxygen levels to around 90%. In more severe cases, it can even lead to a rapid onset of coma.
Nitrogen poses two main types of hazards: acute hypoxia leading to nitrogen asphyxiation, and decompression sickness that occurs during submerged operations.
Precaution:
为了防止氮气泄漏、爆裂、滴漏或泄漏，请定期维护存在氮气的设备、管道、容器等。
It is vital to undertake full ventilation and exhaust of the equipment container after nitrogen replacement. It is only safe to conduct inspection and maintenance when the oxygen content has reached a level above 20%. It is crucial to follow these measures to ensure the safety of personnel and avoid hazards.
It is important to wear oxygen-supply masks during maintenance work that requires urgent attention. Additionally, there should be someone present on site to closely monitor the situation and ensure safety.
The use of protective gloves and glasses is essential when manufacturing liquid nitrogen. It is crucial to prioritize safety measures by wearing these safety items.