Rhodium in-core detector sensitivity depletion, Cycles 2-6. Final report

Technical Report · Sat Dec 01 04:00:00 EST 1984

OSTI ID:5952485

Warren, H D; Gilbert, M L; Pitts, T G; Rombough, C T

Neutron sensitivity depletion of two rhodium self-powered neutron detectors has been measured since July 1976 in an experiment at Duke Power Company's Oconee 2 pressurized water reactor. Except during reactor refueling outages, the detectors have been positioned inside the reactor core throughout the seven-year measurement period. Sensitivity depletion has been determined as a function of electric charge released by each detector. One detector has now reached 60% depletion, the other 58%. The goal of the project is the empirical definition of the depletion characteristics over the operating life-time of the rhodium detector. Results to date show a linear depletion rate to approximately 41% depletion where an increase in the rate occurs. From 41% to 60% depletion, the rate remains linear but at a value approx. 21% greater than the rate below 41% depletion.

• Research Organization: Babcock and Wilcox Co., Lynchburg, VA (USA). Research and Development Div.
• OSTI ID: 5952485
• Report Number(s): EPRI-NP-3814; ON: TI85920168
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ENRICHED URANIUM REACTORS
IN CORE INSTRUMENTS
MEASURING INSTRUMENTS
NEUTRON DETECTORS
OCONEE-2 REACTOR
PERFORMANCE
POWER REACTORS
PWR TYPE REACTORS
RADIATION DETECTORS
REACTOR INSTRUMENTATION
REACTORS
SELF-POWERED DETECTORS
SELF-POWERED NEUTRON DETECTORS
SENSITIVITY
WATER COOLED REACTORS
WATER MODERATED REACTORS