SHIELDING REQUIREMENTS FOR NPR PRODUCTION IN PLUTONIUM RECLAMATION FACILITY- PROJECT CAC-880

Technical Report · Sun Jan 01 04:00:00 EST 1961

OSTI ID:4819081

Moulthrop, H A

An investigation was conducted concerning the variance in shielding required for relative dose rates which will exist when NPR Pu, rather than NPF Pu, is processed in the Plutonium Reclamation Facility. It was found that if NPR, rather than NPF Pu, is processed in the Plutonium Reclamation Facility an 18- in. concrete wall on the cell with NPR will give the same over-all dose rate in the working area as the 24-in. wall does for NPF. With NPR Pu being processed, retention of the 24-in. cell wall will result in approximately 0.25 mrem/hour less dose rate in the working area than would be the case if the cell wall is reduced to 18 in. Compared with a conventional process hood, the dose rate in the working area will be 5 mrem/ hour less by placing the equipment in the cell. With a 6-in. thickness of plexiglas placed around the conventional process hood to reduce neutrons, the dose rate from the process hoods would be reduced to approximately 0.5 mrem/ hour less than for the cell arrangement. However, the necessity for removing the neutron shield frequently to perform glove operations and the higher body exposures received at these times is estimated to result in higher personnel exposure than with the cell arrangement. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: AT(45-1)-1350
• NSA Number: NSA-16-023780
• OSTI ID: 4819081
• Report Number(s): HW-68021
• Country of Publication: United States
• Language: English

Related Subjects

CHEMISTRY
CONCRETES
NEUTRONS
PERSONNEL
PLEXIGLAS
PLUTONIUM
POLYMERS
PRODUCTION
RADIATION DOSES
RADIATION PROTECTION
SAFETY
SEPARATION PROCESSES
SHIELDING
SHIELDING MATERIALS
TESTING
THICKNESS