FBR type reactors
Description
Purpose: To efficiently remove after-heat by causing stabilized spontaneous cooling of coolants in the reactor container even upon reactor tripping. Constitution: A communication channel opening to the inside of a high pressure plenum is disposed to the circumferential wall of an entrance nozzle for each of movable reflectors, a valve sheet is formed within the entrance nozzle and a valve body is supported by a support member made of memory alloy within the entrance nozzle. In this way, the valve body is in contact with the valve sheet during normal operation to establish a required small flow channel within the entrance nozzle. If the back flow of the coolants is resulted in the movable reflector upon occurrence of reactor tripping, the support member made of memory alloy is deformed by the coolants at high temperature to aprat the valve body from the valve sheet and enlarge the flow channel in the entrance nozzle. (Kawakami, Y.)
Availability note (English)
Available from JAPATIC. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 8 p.
- IPC:
- Int. Cl. G21C15/06; G21C1/02; G21C15/18.
- IPC
- Int. Cl. G21C15/06; G21C1/02; G21C15/18.
- Patent number
- JP patent document 59-92395/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 16054778
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- AFTER-HEAT; AFTER-HEAT REMOVAL; ALLOYS; COOLANTS; DEFORMATION; FBR TYPE REACTORS; NATURAL CONVECTION; NOZZLES; SCRAM; VALVES
- Descriptors DEC
- BREEDER REACTORS; CONTROL EQUIPMENT; CONVECTION; ENERGY TRANSFER; EPITHERMAL REACTORS; EQUIPMENT; FAST REACTORS; FLOW REGULATORS; HEAT TRANSFER; REACTOR SHUTDOWN; REACTORS; SHUTDOWN
Optional Information
- Secondary number(s)
- JP patent application 57-202941.