Published September 7, 1982 | Version v1
Patent Metadata-only

Feedwater control device for BWR type reactor

Creators

Description

Purpose: To enable avoidance for unnecessary plant tripping or the like by suppressing abrupt increase in the reactor water level due to the reduction in the reactor core pressure. Constitution: The feedwater control apparatus comprises a mismatching control section for controlling the balance between the feedwater flow rate and the main steam flow rate, a water level control section for maintaining the reactor water level constant and a flow rate control section for controlling the feedwater pump flow rate. A feedwater restriction circuit is provided to the flow rate control section to run-back the feedwater pump upon reduction in the reactor core pressure to rapidly restrict the feedwater flow rate. (Aizawa, K.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
7 p.
IPC:
Int. Cl. G21D3/14.
IPC
Int. Cl. G21D3/14.
Patent number
JP patent document 57-144498/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
15056735
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; CONTROL SYSTEMS; FEEDWATER; FLOW RATE; FLUID FLOW; LEVELS; PRESSURE DROP; REACTOR CORES
Descriptors DEC
HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS; REACTOR COMPONENTS; REACTORS; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 56-29679.