Published July 6, 1982 | Version v1
Patent Metadata-only

Device for control rod driving

Creators

Description

Purpose: To enable satisfactory driving control for control rods by shortening the recovery time for the actual position indication for control rods upon scram. Constitution: A control rod and a driving mechanism therefor are constituted separately and the actual position of the control rod is indicated on a display depending on the rotation of a step motor for the mechanism. Upon usual operation, the control rod is driven at a low speed by way of the driving the step motor at a rated speed. While on the other hand, upon scram, scram water is injected into the driving mechanism to rapidly insert the control rod while separating it from the driving mechanism and driving the step motor at a speed greater than the rated speed to thereby shorten the recovery time for the actual position indication of the control rod. (Horiuchi, T.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
5 p.
IPC:
Int. Cl. G21C7/14; G21C7/16.
IPC
Int. Cl. G21C7/14; G21C7/16.
Patent number
JP patent document 57-108695/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
15056626
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
CONTROL ROD DRIVES; DISPLAY DEVICES; MOTORS; REACTOR CONTROL SYSTEMS; SCRAM; SCRAM RODS; SERVOMECHANISMS; SPEED REGULATORS; VELOCIMETERS
Descriptors DEC
COMPUTER-GRAPHICS DEVICES; CONTROL ELEMENTS; CONTROL EQUIPMENT; CONTROL SYSTEMS; EQUIPMENT; MEASURING INSTRUMENTS; REACTOR COMPONENTS; REACTOR SHUTDOWN; SHUTDOWN

Optional Information

Secondary number(s)
JP patent application 55-183983.