Inferring PWR barrel motion from ex-core neutron detector signals
Conference
·
OSTI ID:7260785
Noise analysis of ex-core power range channel signals has been developed, through experimental and analytical efforts, to a point where it is recognized by PWR manufacturers and the Nuclear Regulatory Commission to provide a basis for nonperturbative inservice monitoring for excessive or altered mechanical motion of the reactor core support barrel which might be indicative of degraded structural integrity. Data recently acquired at two similar (sister) PWR plants and reported further confirm the sensitivity and workability of the noise analysis technique. The data emphasize the need for careful selection of neutron signal passbandwidth if correct results are to be obtained.
- Research Organization:
- Oak Ridge National Lab., Tenn. (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7260785
- Report Number(s):
- CONF-761103-1
- Country of Publication:
- United States
- Language:
- English
Similar Records
U. S. experience with in-service monitoring of core barrel motion in PWRs using ex-core neutron detectors
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Experimental value of percent variation in root-mean-square ex-core detector signal to the core barrel amplitude scale factor
Conference
·
Sat Dec 31 23:00:00 EST 1977
·
OSTI ID:6704859
Inference of core barrel motion from neutron noise spectral density. [PWR]
Technical Report
·
Mon Mar 14 23:00:00 EST 1977
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OSTI ID:7312383
Experimental value of percent variation in root-mean-square ex-core detector signal to the core barrel amplitude scale factor
Journal Article
·
Mon Mar 31 23:00:00 EST 1980
· Nucl. Technol.; (United States)
·
OSTI ID:6918880
Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
MONITORING
NEUTRON FLUX
NEUTRONS
NUCLEONS
PWR TYPE REACTORS
RADIATION FLUX
REACTOR COMPONENTS
REACTOR CORES
REACTOR NOISE
REACTORS
SUPPORTS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
MONITORING
NEUTRON FLUX
NEUTRONS
NUCLEONS
PWR TYPE REACTORS
RADIATION FLUX
REACTOR COMPONENTS
REACTOR CORES
REACTOR NOISE
REACTORS
SUPPORTS
WATER COOLED REACTORS
WATER MODERATED REACTORS