Published May 15, 1984 | Version v1
Patent Metadata-only

Local power monitoring device

Creators

  • 1. Nippon Atomic Industry Group Co. Ltd., Tokyo

Description

Purpose: To properly estimate the fuel rod power and thereby perform load following operation with safety in case if the power distribution within the fuel assembly deviates from the balanced state. Constitution: Average iodine 135 concentration, xenon 135 concentration of a nuclear fuel assembly and those of the most thermally severe fuel rod in a BWR type reactor are inspected. Then, the local power from the fuel rod is estimated by correcting the ratio between the power from the most thermally severe fuel rod and the average power of the fuel assembly (peaking coefficient) depending on the deviation between the measured relationship and the relationship in the balanced state. Based on the estimation, the reactor load following operation can be performed with safety. (Moriyama, K.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
5 p.
IPC:
Int. Cl. G21C17/00.
IPC
Int. Cl. G21C17/00.
Patent number
JP patent document 59-84194/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
16054646
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; CORRECTIONS; FUEL ELEMENT CLUSTERS; INSPECTION; IODINE 135; PEAKS; POWER DISTRIBUTION; PROCESS COMPUTERS; REACTOR MONITORING SYSTEMS; REACTOR OPERATION; RELIABILITY; XENON 135
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COMPUTERS; DISTRIBUTION; ENRICHED URANIUM REACTORS; EVEN-ODD NUCLEI; FUEL ASSEMBLIES; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; IODINE ISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; OPERATION; POWER REACTORS; RADIOISOTOPES; REACTORS; SPATIAL DISTRIBUTION; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; XENON ISOTOPES

Optional Information

Secondary number(s)
JP patent application 57-194588.