Published November 27, 1982 | Version v1
Patent Metadata-only

Monitoring device for the feedwater temperature in nuclear power plants

Creators

Description

Purpose: To early detect the loss of feedwater heating troubles in BWR type reactors. Constitution: Thermometers are disposed to the upstream and downstream of a feedwater heater to always monitor the temperature difference therebetween. Then, if the temperature difference goes lower than a set value, that is, upon loss of feedwater heating accident, a signal is sent to a recycling flowrate regulator for reactor coolants to restrict the recycling flowrate. Further, a signal is simultaneously sent to control rod drives to insert a plurality of previously selected control rods, whereby the reactor power is reduced. (Ikeda, J.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
4 p.
IPC:
Int. Cl. G21D3/08; G21C17/00.
IPC
Int. Cl. G21D3/08; G21C17/00.
Patent number
JP patent document 57-192900/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
15056678
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; FEEDWATER; FEEDWATER HEATERS; REACTOR ACCIDENTS; REACTOR CONTROL SYSTEMS; REACTOR COOLING SYSTEMS; REACTOR INSTRUMENTATION; REACTOR OPERATION; REACTOR PROTECTION SYSTEMS; REACTOR SAFETY; TEMPERATURE MEASUREMENT; TEMPERATURE MONITORING
Descriptors DEC
ACCIDENTS; CONTROL SYSTEMS; COOLING SYSTEMS; HEATERS; HYDROGEN COMPOUNDS; MONITORING; OPERATION; OXYGEN COMPOUNDS; REACTOR COMPONENTS; REACTORS; SAFETY; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 56-78057.