Requirements for level gauge installation in low-temperature liquid (liquid nitrogen, liquid oxygen) storage tanks

The level gauges in low-temperature liquid storage tanks (liquid oxygen, liquid nitrogen) must be installed in compliance with relevant safety regulations to ensure the safe management of the liquids stored in those tanks. According to the provisions in the Regulations on Safety Inspection of Pressure Vessels, low-temperature liquid storage tanks generally require a level indication device to monitor the liquid level in real time. 1. Is it necessary to have an on-site level gauge? : Low-temperature liquid storage tanks usually require on-site level gauges, which are provided to enable operators to directly monitor the liquid level at the site. 2. Can an electronic display be used for the on-site level gauge? For in-situ level gauges, an electronic display can be used; this type of gauge provides more accurate data by utilizing sensors to transmit level information. 3. Is it necessary to have dual level gauges? In some applications with high safety requirements, it may be necessary to install dual level gauges, that is, two separate level measurement systems, in order to enhance safety and reliability. Detailed setup requirements and guidelines should comply with ** or the specific regulations and standards of the industry; it is recommended to consult the latest relevant regulations or contact professionals to obtain specific installation and usage requirements. .

I also looked up some laws and regulations on my own, but they were all rather vague, with no clear explanations.

Sections 6.3.7 to 6.3.11 of the Petrochemical Regulations (2018 edition) specify the requirements for automatic control instruments in liquid ammonia storage tanks. Additionally, various provinces and the **Emergency Management Bureau may also be involved in related matters; you will need to find relevant information on your own