“7, oe en EaowSo gree a ote 5 —. After s¢ ome further discussion in which Dr. Libby again voiced his caveat ageinst barge shots,’ this. part of the session was concluded, At 11:35 aim. Dr. Frahk Pittman met vith the Corimittes to discuss Produd- production requirenents tion | Matters ahd the effect of the iest results on these requitements; All nenber's of ile Committee, the Secretary and Mr, Tomei were present. Dr. Mark, Dr. Froman, and Dr, Fine also remained, Dr. Pittman reported that the new requirement for tritium was, at most, half of the previous requirsment. Tritium Hence it will not be necessary to enrich all of the Savannah River reactors, or as many at Hanford as planned, Another 30-10% reduction in the requirement would make it un- necessary to use any enriched loadings at Savannah River, Dr. Pittman also said that if no tritiun were required for thermonuclear weapons, some enrichment would be required at Savannah River‘up to 1956, but none thereafter, . Dr. Pittman mentioned a probable change in the manner of specifying plutonium quality. Plutonium g/T vs n/g-see It was proposed to state the specification in terms of the number of neutrons enitted per gram per second rather than in terms of g/t (grams of plutonium per ton of uranium). The definition of high quality plutonium would be 20 n/g-sec rather than, PEARCEIVES It was planned to fulfil the plutonium requirements by a balanced Balanced production schedule at two levels ; 20 n/g-sec for high quality naterial, Plutonium Schedule and 80 n/g-sec for standard material. et The latter level corresponds to oo /G/