Management measures and optimization design content for low-temperature storage tank factories

（1） Management measures for LNG plants: 1. Establish a sound management structure and personnel. In low-temperature storage tank plants, it is necessary to set up a relatively strong management structure and allocate positions for supervisors and employees, with unified responsibilities and rights. Relevant personnel need to conduct regular inspections of the site and promptly identify and handle any issues. At the same time, factories also need to establish sound management systems to protect on-site management. 2. Improving management system: LNG plants should cover two aspects in terms of management system: first, national and local level laws and regulations, and second, enterprise made management system. Strictly in accordance with national laws, regulations, standards and specifications, combined with our own production process, job task characteristics, risk factors and occupational disease prevention requirements, we have revised diverse, applicable, production management systems, operating procedures and emergency plans for production accidents. The textual descriptions should be as accurate and easy to understand as possible, making it convenient for practitioners to understand, master and implement them. 3. Strengthening and implementing the system of full production responsibility for all employees takes the socialist ideology with Chinese characteristics in the new era as the guiding ideology, and establishes the basic concept of development. We must continuously promote the idea of putting life first and importance first, implement the responsibility of production to the main body, establish a sound production responsibility system, and continuously innovate the sense of responsibility and rule of law for serving enterprise production, and improve the production management system. 4. Establish a sound dual prevention mechanism, establish a dual prevention mechanism of control and governance, and conduct risk classification control and hidden danger investigation and governance to identify potential hidden dangers that may cause major accidents. Risk grading control is the premise and foundation of hazard investigation and management. By identifying the risk points of all process flows, equipment facilities, and workplaces in liquefied natural growth gas plants, dividing risk levels, and developing risk grading control measures, relevant risks can be reduced or controlled from the source, further reducing the probability of accidents and the potential serious consequences. The development of liquefied natural growth gas (LNG) plants in China is still in its early stages, especially in the domestic market where there are no well-established industry standards for LNG station design and construction. In addition, during the construction and operation process, there are also many risk factors and various hidden dangers. Therefore, liquefied natural growth gas practitioners need to be proficient in the performance of liquefied natural growth gas, continuously strengthen the configuration of various infrastructure on the basis of improving technical and institutional management, enhance the awareness, job operation level, and emergency response ability of practitioners, effectively protect the production of liquefied natural growth gas factories, continuously reduce the probability of related accidents, resolutely resist the probability of various production accidents, in order to maintain the lives and property of enterprises and employees, and promote the development of enterprises. （2） Part of the optimization design of liquefied natural growth gas (LNG) gasification station: 1. Optimization of gasification station engineering scheme. Each part of the LNG storage tank project (civil engineering, process equipment installation, and fire protection installation) occupies a certain investment. The seven systems of the gasification station are composed of specific equipment, and the construction period and scale of the gasification station will have an impact on the selection of these equipment (main process parameters and technical requirements). In other words, the investment of the gasification station is closely related to its design scale and gas supply capacity. Urban gas sources are divided into main gas sources, auxiliary gas sources, peak shaving gas sources, transitional gas sources, and backup gas sources according to their functions. Gas supply has different requirements for different gas sources. Therefore, the scheme design of the gasification station project should be optimized. 2. The design optimization of protective walls is to prevent the accidental leakage of low-temperature liquids from flowing elsewhere. When setting up protective walls around storage tanks, attention should be paid to the following: the volume inside the protective wall should be sufficient to accommodate the total amount of liquefied natural growth gas in the tank, and anti freezing measures should be taken to protect it from damage when in contact with liquefied natural growth gas; In order to prevent the leakage of low-temperature liquids, pipelines or pipe troughs passing through the protective wall cannot be perforated on the protective wall; Set up a collection well inside the protective wall to prevent liquefied natural growth airflow from entering the sewer or other covered sealed channels. 3. The design optimization of the fire protection water system (based on actual reports) mainly includes: ① preventing fire disasters (based on actual reports). The production area is equipped with combustible gas alarm probes and is linked to the emergency shut-off valve of the pipeline system. The inlet and outlet pipes of the storage tank should be equipped with emergency shut-off valves and linked to the tank level control. In case of gas leakage or other emergency situations, the valves should immediately close automatically. ② Self rescue. Set up fire extinguishers and fire water (based on actual reports) pools and other fire extinguishing devices to prevent the spread of fire and strive for rescue time in the event of a fire. 4. In order to optimize electrical design for excellent power supply, the power supply in the station area is generally designed according to Class II load, powered by two power sources, one from a self provided diesel generator and the other from the municipal power system. When the power grid is disconnected, the diesel generator will immediately supply power, thus protecting the smooth operation of firefighting equipment even in the event of an accident. As the electrical load of firefighting equipment is not the same as that of production and office loads, the lighting in the station area should be designed according to relevant national standards. 5. The design optimization of office buildings for gasification stations requires significant investment in civil engineering and installation in gasification station projects. In buildings such as comprehensive buildings, battlefield roads, sites, fire water (based on actual reports) pools, and auxiliary buildings, the proportion of investment in comprehensive buildings is relatively large. Currently, considering company offices, LNG comprehensive buildings are usually two or more floors and have a large area. However, in reality, the location of LNG gasification stations is relatively remote, and the company office is not located in the comprehensive building. Therefore, the area of the comprehensive building does not need to be too large. It can be changed to a single story design to meet normal operational needs, which can reduce investment.