Protecting personnel and the environment from radioactive emissions by controlling such emissions and safely disposing of their energy

• US 4,663,115 A
• Filed: 09/29/1982
• Issued: 05/05/1987
• Est. Priority Date: 08/14/1978
• Status: Expired due to Fees

• Current Assignee: Virginia Russell
• Original Assignee: Virginia Russell
• Inventors: Russell, Virginia
• Primary Examiner(s): Walsh, Donald P.
• Application Number:
  US06/426,824
• Time in Patent Office: 1,679 Days
• Field of Search: 310/301, 310/304, 310/305, 429/5, 136/202, 136/253, 376/320, 376/321
• US Class Current: 376/320
• CPC Class Codes: G21H 1/00 Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes , nuclear or atomic batteries

Abstract

An apparatus for protecting personnel and the environment from harmful emissions of radiation from a source thereof includes a plurality of shielding parts so located as to be in the path of the radioactive emissions and to absorb them (one such part being located farther away from the source of emissions than the other) so that an electrical potential difference between the shielding parts is established, due to different absorptions of radiation by them, means for consuming electrical power at a location remote from the radioactive source, and electrical conductors communicating the consuming means (or load) with such shielding parts. Although the invention is primarily intended for protecting personnel and the environment against emissions from radiation sources, such as radioactive wastes, it is also useful for shielding other sources of harmful radiated emissions. Also within the invention are processes for protecting personnel and the environment against radiation hazards.

Claims

1. An apparatus for protecing organisms and the environment from harmful emissions from a source of heterogenous radioactive waste by shielding said organisms and the environment from at least a portion of such emissions, while drawing off the power of such emissions as electricity, which comprises a plurality, from 2 to 100, of pairs of concentric metal spherical shells surrounding a spherical mass of heterogeneous radioactive waste, the first of each pair of shells, located nearer to the heterogeneous radioactive waste, being of a lower atomic number than the other and being selected from the group consisting of aluminum, magnesium and titanium, and the other of each pair of shells being of a higher atomic number and being selected from the group consisting of copper, silver, iron, cobalt, nickel, manganese, chromium, vanadium and zinc, said pairs of spherical metal shells being separated by a dielectric selected from the group consisting of alumina, mica, silica, glass, synthetic organic polymeric plastic, and air, and said firsts of each pair of metal shells being electrically connected, and said others of each pair of metal shells being separately electrically connected, each to a separate conductor, and said conductors being connected to an electrical load located remote from the heterogeneous radioactive waste, so that electricity generated by the radioactive emissions from the radioactive waste is consumed remote from said waste, without heating the waste or the shielding and without raising the voltages thereof to dangerous levels.

2. An apparatus according to claim 1 wherein a source of electrical potential difference is present and is connected to the pairs of metal shells, with a positive connection being to the metal shells that are more positive, and a negative connection being to the metal shells that are more negative, which source of electrical potential difference, connected as described, stimulates flow of electricity generated by the radioactive waste, at least one of the connections being disconnectable, so that when such radioactivity induced flow of electricity begins the flow of stimulating current from the source of electrical potential difference may be halted.

3. An apparatus according to claim 1 wherein the difference in atomic number between the metal of the first of each pair of metal shells and the metal of the other of such pairs is at least 10.

4. An apparatus according to claim 3 wherein the metal of the first of each pair of shells is aluminum, the metal of the other of the pairs of shells is copper, and the dielectric is air.

5. An apparatus according to claim 1 wherein the metal of the first of each pair of shells is aluminum, the metal of the other of each pair of shells is copper, and the dielectric is air.

6. An apparatus according to claim 1 wherein the electrical load is a variable resistance, which automatically maintains the flow of current and keeps the voltage low.

7. An apparatus according to claim 2 wherein the electrical load is a variable resistance, which automatically maintains the flow of current and keeps the voltage low.

8. An apparatus according to claim 7 wherein the metal of the first of each pair of shells is aluminum, the metal of the other of each pair of shells is copper, and dielectric between each of the pairs of shells is air.

9. An apparatus according to claim 1 wherein the pairs of metal shells are in flexible sheet form, with alternating layers of different metals and layers of dielectric between them.