Published November 27, 1975 | Version v1
Patent Metadata-only

Analog type control rod position indicator

Creators

Description

Object: To increase the precision of detection and indication of control rod position by compensating for changes in detector output accompanying changes in the temperature of the coolant. Structure: In a primary side circuit consisting of a constant voltage source, a detector primary winding current limiting resistor and a detector primary winding, a temperature sensor element such as a thermocouple for detecting the temperature within the reactor and a resistance correction circuit for varying the resistance of the temperature detection circuit and current limiting resistor are provided. With this construction, varying the resistance of the current limiting resistor according to the reactor temperature compensates for the change in output due to a change in permeability of the control rod drive shaft accompanying the temperature change within the reactor. (Ikeda, J.)

Availability note (English)

Available from JAPATIC, Tokyo; hard paper copy 40 Yen/page (mailing charge additional).

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21C7/12.
IPC
Int. Cl. G21C7/12.
Patent number
JP patent document 1977-66191/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
9368062
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ACCURACY; ANALOG SYSTEMS; CONTROL ELEMENTS; CONTROL EQUIPMENT; CONTROL ROD DRIVES; CORRECTIONS; DISPLACEMENT GAGES; POWER CONDITIONING SYSTEMS; PWR TYPE REACTORS; REACTOR CONTROL SYSTEMS; TEMPERATURE DEPENDENCE; TEMPERATURE MONITORING
Descriptors DEC
CONTROL SYSTEMS; MEASURING INSTRUMENTS; MONITORING; REACTOR COMPONENTS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS