With the experience of more than 175 retrofits and installation of 270 new moisture separator reheaters (MSRs), GE technology can improve efficiency, raise performance, and extend the MSR’s service life.

Increased Efficiency

As an integral part of the turbine generator package, the MSR configuration and technical parameters are designed for increased power output.


Its extensive installed base (200 units in operation) demonstrates 40 years of excellent operation. First-generation MSRs are still in operation today.


Can be adapted to all existing reactor outputs up to 1,900 MWe and can meet a wide range of sizes, arrangements, and system design requirements.



Product Specifications

Typical Reference Solutions for: 1000 MW 1200 MW 1700 MW
Installation Horizontal Horizontal Vertical
Type 2 Reheat Stages 2 Reheat Stages 2 Reheat Stages
Quantity per TG Set 2 2 2
Cycle Steam Inlet Massflow (kg/s ) 620 700 980
Inlet Pressure (bar a) 10 11 12
Moisture Separation
Inlet Moisture (%) 14 14.5 15
Outlet Moisture (%) 0.5 0.5 0.5
1st and 2nd Stage Reheater
Tube Type U-finned U-finned Straight-finned
Tube Material Ferritic Stainless Steel Ferritic Stainless Steel Ferritic Stainless Steel
Tube-tubesheet Joint Expanded/Welded Expanded/Welded Expanded/Welded
MSR Shell
Diameter (m) 4.3 4.3 5.8
Straight Length (m) 18.6 18.8 16.2
Material Carbon Steel Plate Carbon Steel Plate Chrome Moly Plate
In Operation (tons) 260 265 440
Flooded (tons) 520 540 860