LOFT advanced densitometer for nuclear loss-of-coolant experiments

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6309135

Johnson, L. O.; Lassahn, G. D.; Wood, D. B.

A ''nuclear hardened'' gamma densitometer, a device which uses radiation attenuation to measure fluid density in the presence of a background radiation field, is described. Data from the nuclear hardened gamma densitometer are acquired by time sampling the coolant fluid piping and fluid attenuated source energy spectrum. The data are used to calculate transient coolant fluid cross sectional average density to analyze transient mass flow and other thermal-hydraulic characteristics during the Loss-of-Fluid Test (LOFT) loss-of-coolant experiments. The nuclear hardened gamma densitometer uses a pulse height analysis or energy discrimination, pulse counting technique which makes separation of the gamma radiation source signal from the reactor generated gamma radiation background noise signal possible by processing discrete pulses which retain their pulse amplitude information.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: EY-76-C-07-1570
• OSTI ID: 6309135
• Report Number(s): CONF-790505-6
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
220600* -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
DATA PROCESSING
DENSITOMETERS
LOFT REACTOR
MEASURING INSTRUMENTS
PHOTOMETERS
PROCESSING
PWR TYPE REACTORS
REACTOR INSTRUMENTATION
REACTORS
RESEARCH AND TEST REACTORS
SPECIFICATIONS
TANK TYPE REACTORS
TEST REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS