A system configured to maintaining a desired pressure in a discharging intermediate LCO 2 tank during discharging of LCO 2 from the tank thereby avoiding formation of dry ice in the intermediate LCO 2 storage tank during the LCO 2 discharge from the tank, which system avoids or reduces the risk of formation of hydrates in the system from water contained in the LCO 2, comprising: - an intermediate LCO 2 storage tank; - an LCO 2 discharge conduit (41, 43, 80, 82, 31) connected to the intermediate LCO 2 storage tank configured to discharge LCO 2 to be injected into a long-term CO2 storage; - a first LCO 2 pump arranged along the discharge conduit (41, 43, 80, 82, 31); - an injection pump arranged along the discharge conduit (41, 43, 80, 82, 31) downstream of the first LCO 2 pump; - an LCO 2 heater arranged along the discharge conduit (41, 43, 80, 82, 31) downstream of the LCO 2 injection pump; characterized in additionally comprising, - a tank heater configured to receive and to transfer heat from a fluid stream being led through the tank heater to the contents of the intermediate storage tank; - a closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) including the tank heater configured to circulate within the loop, as the fluid stream, a stream of LCO 2; - a recirculation pump arranged along the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) configured to recirculate within the loop the stream of LCO 2; - a loop heater (97; 98) configured to heat the stream of LCO 2 being recirculated within the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84); - a charging valve arranged on a charging conduit connecting the discharge conduit (41, 43, 80, 82, 31) with the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84), which charging valve is configured to enabling, when in an open position, introduction of LCO 2 from the discharge conduit (41, 43, 80, 82, 31) into the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84); and, - a discharging valve arranged along the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) configured to enabling, when in an open position, discharge of LCO 2 from the discharge conduit (41, 43, 80, 82, 31) into the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84). - an intermediate LCO 2 storage tank; - an LCO 2 discharge conduit (41, 43, 80, 82, 31) connected to the intermediate LCO 2 storage tank configured to discharge LCO 2 to be injected into a long-term CO2 storage; - a first LCO 2 pump arranged along the discharge conduit (41, 43, 80, 82, 31); - an injection pump arranged along the discharge conduit (41, 43, 80, 82, 31) downstream of the first LCO 2 pump; - an LCO 2 heater arranged along the discharge conduit (41, 43, 80, 82, 31) downstream of the LCO 2 injection pump; characterized in additionally comprising, - a tank heater configured to receive and to transfer heat from a fluid stream being led through the tank heater to the contents of the intermediate storage tank; - a closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) including the tank heater configured to circulate within the loop, as the fluid stream, a stream of LCO 2; - a recirculation pump arranged along the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) configured to recirculate within the loop the stream of LCO 2; - a loop heater (97; 98) configured to heat the stream of LCO 2 being recirculated within the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84); - a charging valve arranged on a charging conduit connecting the discharge conduit (41, 43, 80, 82, 31) with the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84), which charging valve is configured to enabling, when in an open position, introduction of LCO 2 from the discharge conduit (41, 43, 80, 82, 31) into the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84); and, - a discharging valve arranged along the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84) configured to enabling, when in an open position, discharge of LCO 2 from the discharge conduit (41, 43, 80, 82, 31) into the closed heating medium loop (81, 83, 84, 86, 85, 87; 81, 83, 84).