OPERATIONAL CONTROL ROD REACTIVITY WORTHS FROM OBSERVED HEAT GENERATION RATES

Technical Report · Tue Oct 01 04:00:00 EDT 1963

OSTI ID:4121953

Fredsall, J R; Bowers, C E

Control rod reactivity worths can be determined with reasonable accuracy from estimates of the neutron absorption rate in the rods and evaluation of the change in reactor leakage rate on rod withdrawal. In the Hanford reactors these values are found from measured control rod heat generation and reactor flux distribution data. This calibration technique can also be applied to reactors without separate rod-cooling systems. The neutron absorption rate in the rods is obtained from rod surface foil activation or activation of the rods themselves. The change in reactor leakage upon rod insertion is found with theoretical determinations of the unperturbed flux distribution andd the flux distribution after insertion of an equivalent control region. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: AT(45-1)-1350
• NSA Number: NSA-18-006417
• OSTI ID: 4121953
• Report Number(s): CONF-243-34
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
ACTIVATION
CONFERENCE
CONFIGURATION
CONTROL ELEMENTS
COOLING
DISTRIBUTION
EQUATIONS
ERRORS
FOILS
HAPO
HEAT TRANSFER
HEATING
MEASURED VALUES
NEUTRON FLUX
NEUTRONS
NUMERICALS
REACTIVITY
REACTOR CORE
REACTOR TECHNOLOGY
RODS
SHUTDOWN
STANDARDS
VARIATIONS
ZONES