Published September 27, 1980 | Version v1
Patent Metadata-only

Emergency core cooling system

Creators

Description

Purpose: To restrict flow out of coolants from the pressure vessel of a water cooled reactor in loss of coolant accident due to ruptures in pipeways in an emergency core cooling system. Constitution: A check valve mechanism is provided in the midway of the pipeway leading to the sparger in a pressure vessel. The check valve has a structure in which a ball is used as a valve body for the closure of flowing path and a portion of the flowing path in the valve chamber is restricted as the valve sheet to less than the diameter of the ball. If coolants flow backwardly in the pipeway, the ball is pressed onto the valve sheet by hydraulic pressure to close the pipeway. (Ikeda, J.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21C15/18.
IPC
Int. Cl. G21C15/18.
Patent number
JP patent document 55-125487/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
13684621
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
CLOSURES; CORE SPRAY SYSTEMS; ECCS; FAILURES; LOSS OF COOLANT; PIPES; PRESSURE VESSELS; VALVES; WATER COOLED REACTORS
Descriptors DEC
ACCIDENTS; CONTAINERS; CONTROL EQUIPMENT; FLOW REGULATORS; REACTOR ACCIDENTS; REACTOR PROTECTION SYSTEMS; REACTORS