A warming arrangement, for a power plant, comprising: a first steam turbine, for expanding steam; and a first warming system, for warming the first steam turbine using a first warming gas, the first warming system including: a first makeup line, fluidly connected to the first steam turbine, for directing the first warming gas into the first steam turbine; a first recycle line, fluidly connected to the first steam turbine, for conveying the first warming gas from the first steam turbine, a first gas moving device, in either the first makeup line or the first recycle line, for moving the first warming gas through the first warming system; and a first heater, in either the first makeup line or first recycle line upstream of the steam turbine so as to heat the first warming gas before it enters the steam turbine; wherein the first steam turbine has a feed line and an exhaust line which in combination are arranged to direct a main steam through the steam turbine during operation; the arrangement being characterised by the first warming system further comprising: a first pressure measurement device configured and arranged to determine a gauge pressure in the steam turbine; and a controller, configured to control a flow rate of the first warming gas through the first steam turbine, based on the first pressure measurement device, wherein the first makeup line and the first recycle line are distinct and separate lines from the feed line and the exhaust line, and wherein the feed line includes a feed valve wherein the first recycle line is connected to the feed line so as to enable the first warming gas to flow through the feed line into the first steam turbine via the feed line. a first steam turbine, for expanding steam; and a first warming system, for warming the first steam turbine using a first warming gas, the first warming system including: a first makeup line, fluidly connected to the first steam turbine, for directing the first warming gas into the first steam turbine; a first recycle line, fluidly connected to the first steam turbine, for conveying the first warming gas from the first steam turbine, a first gas moving device, in either the first makeup line or the first recycle line, for moving the first warming gas through the first warming system; and a first heater, in either the first makeup line or first recycle line upstream of the steam turbine so as to heat the first warming gas before it enters the steam turbine; wherein the first steam turbine has a feed line and an exhaust line which in combination are arranged to direct a main steam through the steam turbine during operation; the arrangement being characterised by the first warming system further comprising: a first pressure measurement device configured and arranged to determine a gauge pressure in the steam turbine; and a controller, configured to control a flow rate of the first warming gas through the first steam turbine, based on the first pressure measurement device, wherein the first makeup line and the first recycle line are distinct and separate lines from the feed line and the exhaust line, and wherein the feed line includes a feed valve wherein the first recycle line is connected to the feed line so as to enable the first warming gas to flow through the feed line into the first steam turbine via the feed line. a first makeup line, fluidly connected to the first steam turbine, for directing the first warming gas into the first steam turbine; a first recycle line, fluidly connected to the first steam turbine, for conveying the first warming gas from the first steam turbine, a first gas moving device, in either the first makeup line or the first recycle line, for moving the first warming gas through the first warming system; and a first heater, in either the first makeup line or first recycle line upstream of the steam turbine so as to heat the first warming gas before it enters the steam turbine; wherein the first steam turbine has a feed line and an exhaust line which in combination are arranged to direct a main steam through the steam turbine during operation; the arrangement being characterised by the first warming system further comprising: a first pressure measurement device configured and arranged to determine a gauge pressure in the steam turbine; and a controller, configured to control a flow rate of the first warming gas through the first steam turbine, based on the first pressure measurement device, wherein the first makeup line and the first recycle line are distinct and separate lines from the feed line and the exhaust line, and wherein the feed line includes a feed valve wherein the first recycle line is connected to the feed line so as to enable the first warming gas to flow through the feed line into the first steam turbine via the feed line. a first pressure measurement device configured and arranged to determine a gauge pressure in the steam turbine; and a controller, configured to control a flow rate of the first warming gas through the first steam turbine, based on the first pressure measurement device, wherein the first makeup line and the first recycle line are distinct and separate lines from the feed line and the exhaust line, and wherein the feed line includes a feed valve wherein the first recycle line is connected to the feed line so as to enable the first warming gas to flow through the feed line into the first steam turbine via the feed line.