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Water chemistry is an important factor in the safe and reliable operation of both pressurized water reactors and boiling water reactors used to generate electric power in the United States. The chemistry parameters for normal power operation for the PWR primary water and secondary water and for the BWR reactor water and reactor feedwater/condensate are presented and discussed. Significant experiences with water chemistry and materials and operations are presented. Sources of radioisotopes that have an impact on some of the radiation concerns are listed. Water chemistry has a large impact on the economic considerations of the plants.

The requirements for cooling the NS Savannah reactor core during refueling were investigated. The two-part study included analysis of the system required to provide coolant flow to the reactor and to remove the decay heat generated and analysis of flow and temperature characteristics in the reactor during refueling. Since previous investigations of the system requirements had been made, this study was concerned primarily with the flow and temperature analysis.

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