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On-line measurement of stack-gas particulate radionuclides

Conference ·
OSTI ID:6860907
; ;
This paper describes an advanced process-monitoring system for the automatic sample collection, analysis, reporting, and alarming of the concentration of long-lived radionuclides in nuclear process stack-gas effluents. This system, the Moving Filter Radioactive Aerosol Monitor, collects particulates in a conditioned sampling chamber, under computer control, for subsequent and separate alpha and beta counting and analysis. The alpha measurement is performed with a solid-state surface-barrier detector. Beta analysis is performed with a phoswich scintillation detector. A unique alpha-energy analysis program that provides automatic energy calibration and lowered detection limits for plutonium in the presence of high quantities of interfering /sup 212/Bi/Po is described. The /sup 212/Bi/Po alpha results are further used to monitor system quality and to compensate for the radon daughter beta components in the beta system. Results of the system calibration and detection limits are also presented. 8 refs., 6 figs.
Research Organization:
Westinghouse Hanford Co., Richland, WA (USA)
DOE Contract Number:
AC06-87RL10930
OSTI ID:
6860907
Report Number(s):
WHC-SA-0173; CONF-8711195-1; ON: DE88013676
Country of Publication:
United States
Language:
English

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Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDES
AEROSOL MONITORING
AIR POLLUTION MONITORING
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ALPHA DETECTION
ALPHA SPECTROSCOPY
BETA DECAY RADIOISOTOPES
BETA DETECTION
BETA-MINUS DECAY RADIOISOTOPES
BISMUTH 212
BISMUTH ISOTOPES
CALIBRATION
CHARGED PARTICLE DETECTION
COMPUTERS
DETECTION
EFFICIENCY
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASEOUS WASTES
GASES
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MANAGEMENT
MATERIALS
MEASURING INSTRUMENTS
METALS
MONITORING
NAI DETECTORS
NANOSEC LIVING RADIOISOTOPES
NONMETALS
NUCLEAR FACILITIES
NUCLEI
ODD-ODD NUCLEI
PARTICLES
PARTICULATES
PLUTONIUM
POLONIUM 212
POLONIUM ISOTOPES
RADIATION DETECTION
RADIATION DETECTORS
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
RADON
RARE GASES
SCINTILLATION COUNTERS
SECONDS LIVING RADIOISOTOPES
SOLID SCINTILLATION DETECTORS
SPECTROSCOPY
STACK DISPOSAL
STRONTIUM 90
STRONTIUM ISOTOPES
TRANSURANIUM ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
YEARS LIVING RADIOISOTOPES