Structural design and flow distribution analysis of inlet plenum is an important part in the design of steam generator in sodium-cooled fast reactor(SFR)which would affect the operating safety and reliability by its rationality of design.Based on the structure of sodium-side inlet plenum of SG in CEFR,the inlet plenum of SG in Structural design and flow distribution analysis of inlet plenum is an important part in the design of steam generator in sodium-cooled fast reactor (SFR) which would affect the operating safety and reliability by its rationality of design. inlet plenum of SG in CEFR, the inlet plenum of SG in