Published October 28, 1994 | Version v1
Patent Metadata-only

Failed fuel detection device

Creators

Description

The device of the present invention concerns a failed fuel detection device for a nuclear reactor, such as an FBR type reactor, using electroconductive coolants. A sampling port is disposed at the upper portion of the fuel assembly so as to cover the assembly, so that coolants in the fuel assembly are sampled to improve a device for detecting fuel failure. That is, when coolants in the fuel assembly are sampled from the sampling port, the flow of electroconductive coolants in an sampling tube is detected by a flowmeter, to control an electromagnetic pump. The flow of electroconductive coolants is stopped against the waterhead pressure and dynamic pressure of the conductive coolants, and a predetermined amount of the coolants is pumped up to the sampling tank. Gas is supplied to the pumped up coolants so that fissile products are transferred from the coolants to a gas phase. Radiation in the gas in a gas recycling system is measured to detect presence of fuel failure. (I.S.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
8 p.
IPC:
Int. Cl. G21C17/07; G01N1/10; G01N1/14.
IPC
Int. Cl. G21C17/07; G01N1/10; G01N1/14.
Patent number
JP patent document 6-300887/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
26047645
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
COOLANTS; ELECTRIC CONDUCTIVITY; FAILED ELEMENT DETECTION; FAILED ELEMENT MONITORS; FBR TYPE REACTORS; FISSION PRODUCTS; FUEL ASSEMBLIES; RADIATION DETECTION; REACTOR MONITORING SYSTEMS
Descriptors DEC
BREEDER REACTORS; DETECTION; ELECTRICAL PROPERTIES; EPITHERMAL REACTORS; FAST REACTORS; ISOTOPES; MATERIALS; MEASURING INSTRUMENTS; MONITORS; PHYSICAL PROPERTIES; RADIOACTIVE MATERIALS; REACTORS

Optional Information

Secondary number(s)
JP patent application 5-108914.