This report presents information pertaining to the life of the reduction bombs in both the RG and RMM Lines of the Plutonium Purification and Fabrication operations in the 234-5 Building. The expected average life to rupture of the RG Line Bomb of carbon steel subjected to an internal pressure of 450 psig is ten hours at 750 C. The expected average life of the RM Line bomb of V-36 alloy is more than 100,000 hours at 750 C under the same operating conditions. These expected average life values do not include any calculated factor of safety. Since they are average figures, some bombs could be expected to have shorter life to rupture. The BG Line bomb of carbon steel is definitely hazardous under the extreme service conditions of 450 psig and 750 C. If the use of carbon steel is to be continued it is recommended that the bombs be redesigned to reduce unit stresses.

This report endeavors to point out the radiation hazards involved with respect to the patient undergoing oral roentgenography. The dose rate can be as high as 280 r/min. Very definite hematological changes have been observed and are being thoroughly investigated. Recommendations have been suggested to eliminate overexposures.