Editing Integral fast reactor (section)

====Sodium coolant====
The use of liquid metal coolant removes the need for a pressure vessel around the reactor. Sodium has excellent nuclear characteristics, a high heat capacity and heat transfer capacity, low density, low [[viscosity]], a reasonably low melting point and a high boiling point, and excellent compatibility with other materials including structural materials and fuel.{{Citation needed|date=January 2023}} The high heat capacity of the coolant and the elimination of water from the [[Nuclear reactor core|reactor core]] increase the inherent safety of the core.<ref name=PE/>