Coolant distributing device for a fuel assembly
Description
Object: To relieve deformation of a core due to a fuel assembly bended caused by the expansion difference resulted from swelling in a fast reactor. Structure: A coolant distributing device for a fuel assembly comprises a cylindrical body disposed between a core upper support plate and a lower support plate, an entrance nozzle inserted into the cylindrical body, and an isolating plate disposed within the nozzle. A portion facing to a reactor center side (a reactor center side portion) and a portion facing to a reactor outside (a reactor outside portion) of the cylindrical body are each formed with an orifice, the orifice in the reactor center side portion having an opening area greater than that of the reactor outside portion. Temperature distribution of a fuel rod 17 in a horizontal section of the fuel assembly may be varied by varying the opening area of the orifice, whereby flow rate of coolant to be supplied to the reactor center side portion is made greater than flow rate of coolant to be supplied to the reactor outside portion within the fuel assembly. (Kamimura, M.)
Availability note (English)
Available from The Japan Patent Information Center, Tokyo; hard paper copy 40 Yen/page (mailing charge additional).Additional details
Publishing Information
- Imprint Pagination
- 5 p.
- IPC:
- Int. Cl. G21C3/32; G21C15/02.
- IPC
- Int. Cl. G21C3/32; G21C15/02.
- Patent number
- JP patent document 1976-71487/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 8313178
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- DEFORMATION; FAST REACTORS; FLOW RATE; FUEL ASSEMBLIES; LIQUID FLOW; NOZZLES; ORIFICES; REACTOR CORES; SPATIAL DISTRIBUTION
- Descriptors DEC
- DISTRIBUTION; EPITHERMAL REACTORS; FLUID FLOW; OPENINGS; REACTOR COMPONENTS; REACTORS