GENERAL SPECIFICATIONS AND ORIGINAL ASPECTS OF REACTORS G2 AND G3

The objectives of G2 and G3 were the production of plutonium along with a significant amount of electricity. The initial specifications were chosen as a direct resuIt of experience gained from G1 and EL2. The essential requirements were to maintain the pressure of the cooling gas slightly above that of the steam, the loading and unloading of fuel under pressure and opsration, horizontal arrangement for the fuel elements, and prestressed concrete for the pressure vessel. The prestressed concrete allowed for a high operating pressure and improved performance. (W.D.M.)