SM-1 MAXIMUM PERMISSIBLE CONCENTRATIONS OF RADIOACTIVE ISOTOPES.
ARMY ENGINEER REACTORS GROUP FORT BELVOIR VA ENGINEERING DEPT
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The report discusses the method used in determining maximum permissible concentration of radioactive isotopes as produced by Army nuclear reactors. Accurate current MPCs for use at the SM-1 Nuclear Power Plant at Fort Belvoir, Va., are derived. Final MPC values were determined by applying the Bateman Solution using the Rubinson correction to the general differential equation which is used to describe the decay and activation of a radioactive substance. This solution was applied to specific radionuclides generated in the smallest integral core unit one fuel plate after 600 days of reactor operation at full power. When calculations indicated that after complete dissolution of the smallest integral core unit into the primary coolant a significant amount of activity was present, this activity was physically checked for by a complete radiochemical analysis. The calculated values together with the measured radiochemical values were then applied to the not present criteria and the MPC value, in turn, was determined from these results. Isotopes specifically limited to airborne MPC limits were evaluated for by similar calculations, radiochemical analysis of the primary coolant, and by radiochemical analysis of air samples as necessary. Author
- Radiation and Nuclear Chemistry
- Nuclear Fission Reactors (Power)