Instrumentation and assay procedures for verification of the radionuclide content of low-level waste packages
The preferred embodiment of waste package assay instrumentation for verification of the radionuclide content is a high resolution germanium diode gamma-ray spectrometer incorporated in a segmented gamma scanner and a passive neutron interrogation system for measurement of the neutrons emitted spontaneously from a waste package. The selection criteria and rationale for this choice are discussed. Assembly and operation procedures for the instrumentation are recommended, and methods for data acquisition and reduction are given. The choice of radioisotopes for fabrication of calibration standards is /sup 60/Co at approx. 10 mCi/m/sup 3/, /sup 90/Sr at approx. 10 mCi/m/sup 3/, /sup 134/Cs at approx. 14 mCi/m/sup 3/, /sup 137/Cs at approx. 15 mCi/m/sup 3/, and transuranic alpha activity at approx. 10 nCi/g. Suggested matrix materials are given.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5633198
- Report Number(s):
- PNL-4848; ON: DE84001664
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM 134
GAMMA SPECTROSCOPY
CESIUM 137
COBALT 60
LOW-LEVEL RADIOACTIVE WASTES
RADIOACTIVITY
STRONTIUM 90
TRANSURANIUM ELEMENTS
MEASURING METHODS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
COBALT ISOTOPES
ELEMENTS
EVEN-EVEN NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
SPECTROSCOPY
STRONTIUM ISOTOPES
WASTES
YEARS LIVING RADIOISOTOPES
052002* - Nuclear Fuels- Waste Disposal & Storage
400103 - Radiometric & Radiochemical Procedures- (-1987)