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US 6,166,390 AGranted
Radiation shielding composition
AssigneeBechtel BWXT Idaho, LLC
InventorsWilliam J. Quapp, Paul A. Lessing
Life of this patent
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AssigneeBechtel BWXT Idaho, LLC
InventorsWilliam J. Quapp, Paul A. Lessing
Estimating the term…
A composition for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm.sup.3 and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile.
A radiation shielding concrete product comprising a stable depleted uranium aggregate and a neutron absorbing component, said uranium aggregate and neutron absorbing component being present in said concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams per cm.sup.3 a nd which will, at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period.
A stabilized depleted uranium material for use in a radiation shielding material comprising:
A method of making a stabilized depleted uranium material for use in a radiation shielding material comprising the steps of:
Dependencies are inferred from the claim text.