According to the risk assessment guidelines of DNV, an internationally recognized risk assessment agency, there is a 50% risk of injury and death from sustained exposure within 15 minutes at a CO₂ concentration of 10%. Carbon dioxide is a “non-flammable and non-toxic gas”, which belongs to Class 2.2 dangerous goods and is an asphyxiating gas. For safety reasons, such as CO₂ pumps and compressors, special care should be taken to avoid a two-phase flow zone between the suction section and the compression/pumping section. Based on the uniqueness of CO₂ medium and its pipeline, the safety technology system of supercritical CO₂ pipeline and its related engineering solutions in foreign countries were studied, the characteristics and technical status of CO₂ pipeline transportation in foreign countries from two aspects of operation and guarantee were summarized, in order to provide guidance for the safe operation of domestic supercritical CO₂ pipeline.

supercritical CO₂ pipeline  /  safety technology  /  water hammer discharge  /  support technology