Measurement of radionuclides in waste packages

Patent · Tue Oct 14 00:00:00 EDT 1986

OSTI ID:7147603

Brodzinski, R L; Perkins, R W; Rieck, H G; Wogman, N A

A method is described for non-destructively assaying the radionuclide content of solid waste in a sealed container comprising: (a) determining the type of reactor responsible for the generation of the waste; (b) determining the degree of fuel enrichment of the reactor; (c) determining the decay time of the waste since exposure in the reactor; (d) measuring the gamma-ray spectrum of the waste; (e) determining the matrix density of the waste from ratios of photopeak pairs from individual radioisotopes in the gamma-ray spectrum; (f) measuring the total neutron flux and the coincidence neutron flux of the waste; and (g) determining neutron multiplicity from the coincidence neutron flux.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4617169
• OSTI ID: 7147603
• Resource Relation: Patent File Date: Filed date 12 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
RADIOACTIVE WASTES
ACTIVITY LEVELS
GAMMA SPECTRA
NONDESTRUCTIVE ANALYSIS
WASTE FORMS
ANTIMONY 125
BARIUM 140
BREMSSTRAHLUNG
BURNUP
CESIUM 134
CESIUM 137
CESIUM 144
COBALT 57
COBALT 58
COBALT 60
CONTAINERS
DECAY
DENSITY
EUROPIUM 152
EUROPIUM 154
IODINE 129
ISOTOPE SEPARATION
MANGANESE 54
NEUTRON FLUX
REACTORS
RUTHENIUM 106
SILVER 110
SOLID WASTES
STRONTIUM 90
TECHNETIUM 99
TIME DEPENDENCE
YTTRIUM 90
ZIRCONIUM 95
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANTIMONY ISOTOPES
BARIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
CHEMICAL ANALYSIS
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
EUROPIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MANGANESE ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PHYSICAL PROPERTIES
RADIATION FLUX
RADIATIONS
RADIOACTIVE MATERIALS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RUTHENIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SEPARATION PROCESSES
SILVER ISOTOPES
SPECTRA
STRONTIUM ISOTOPES
TECHNETIUM ISOTOPES
WASTES
YEARS LIVING RADIOISOTOPES
YTTRIUM ISOTOPES
ZIRCONIUM ISOTOPES
052001* - Nuclear Fuels- Waste Processing
400102 - Chemical & Spectral Procedures