Quantitative waste assay using gamma-ray spectrometry and computed tomography

Conference · Thu May 28 04:00:00 EDT 1992

OSTI ID:7239824

Martz, H E; Roberson, G P; Robert-Coutant, C; Schneberk, D J; Camp, D C

Simulated and real experimental data are used to investigate the use of (1) active computed tomography (ACT) to obtain images of attenuated gamma rays from a waste-canister interior; (2) passive computed tomography (PCT) to locate and determine the radioisotopic sources present; and (3) ACT data to correct PCT data so that accurate radioisotopic source activities can be determined. Active and passive computed tomography (A PCT) techniques were used to analyze a small container of mock waste. Both simulated and experimental results reveal that ACT scans properly map the canister's attenuating matrix and, coupled with PCT scans, can yield quantitative source activities.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7239824
• Report Number(s): UCRL-JC-110716; CONF-9205153--5; ON: DE92017440
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
42 ENGINEERING
420204 -- Engineering-- Shipping Containers
440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ATTENUATION
COMPUTERIZED TOMOGRAPHY
DATA ACQUISITION
DIAGNOSTIC TECHNIQUES
GAMMA SPECTRA
GE SEMICONDUCTOR DETECTORS
MATERIALS
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPE SCANNERS
SEMICONDUCTOR DETECTORS
SPECTRA
TOMOGRAPHY
WASTE FORMS
WASTES