1.The filling level of the carbon dioxide storage tank must not exceed 95% of its capacity; overfilling is strictly prohibited.
2.Pressure gauges must remain free of oil contamination and shall be calibrated at regular intervals. Valves shall be constructed of stainless steel or copper, undergo regular calibration, and be thoroughly degreased to ensure safe operation.
3.During operation, valves shall be opened and closed gradually to prevent pressure surges. When the system is not in use, the booster valve must be securely closed.
4.In the event of freezing in valves, instruments, or piping systems, thawing shall be conducted using nitrogen, dry air, or hot water at a temperature between 70 °C and 80 °C. The use of open flames for heating is strictly prohibited.
5.Repairs involving open flames are strictly prohibited while liquid remains in the carbon dioxide storage tank. Prior to any maintenance, the tank must be fully warmed to ambient temperature.
6.During storage, the internal pressure must be continuously monitored by designated personnel. Over pressurization is strictly forbidden.
7.If the liquid has been drained from the carbon dioxide storage tank and immediate heating is not possible, all valves must be promptly closed. Due to the extremely low internal temperature, moisture-laden air may ingress through connected piping, potentially leading to ice formation and blockage.