Water System Design - Summary

Each chemical has specific characteristics that affect storage and feed system design. Table 3-1 lists some information about the gases used in water treatment. A brief summary of the uses for each chemical follows. 

WSRC/SRL, SRL-EDG-90-290, Task 90-019-1, Subtask 2, "Summary of Engineering Analysis and Design for the Process Water System,"... 

In summary, the secondary system, including the steam generators and condenser, meets the requirements specified in accepted industry codes and standards. In addition, steam generator materials and secondary side water chemistry meet the intent of the guidance given in SRP Section 5.4.2. Therefore, this issue is resolved for the System 80+ Standard Design. 

In summary, optimal saturated substrate concentrations, the need for by-product removal, and the need for flow-through agitated hydrodynamic conditions arc the main aspects for optimal fuel selection for each specific EFC design. Future design may address recycling water from the reaction waste for on-board formation of fresh fuel, from a concentrated solution or solid phase stock. To our knowledge, such system has yet to be bmlt and demonstrated with EFCs. 

In summary, it would appear that Pu could be obtained from material available early in the nuclear fuel cycle. Both graphite and heavy water seem viable as moderator materials. When considered simply in terms of production rate versus uranium investment, the D2O-moderated system would seem to be more efficient, although its design contains more complexities from the neutronic perspective. Graphite, on the other hand, may be more... 

---