Abstract
Feed pumps applied to early large-size light water moderated nuclear reactors in the United States were modifications of existing split-casing volute type pipeline pumps or multi-stage pumps. An increase in unit ratings from 500 to 800–1100 MW showed the inadequacy of these pumps for the high flows required. Accordingly, the authors' company undertook a study to arrive at a suitable design. Various concepts were considered: number of stages, casing configuration, materials, etc. Reliability was the key consideration, along with flexibility of application and ease of manufacture. The final selection was a single-stage solid casing with an integral diffuser and condensate injection seals. The manufacturing problems which develop are discussed, together with performance tests run on the first machines of this type.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
