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Title: Fast breeder reactor protection system

Reactor protection is provided for a liquid-metal-fast breeder reactor core by measuring the coolant outflow temperature from each of the subassemblies of the core. The outputs of the temperature sensors from a subassembly region of the core containing a plurality of subassemblies are combined in a logic circuit which develops a scram alarm if a predetermined number of the sensors indicate an over temperature condition. The coolant outflow from a single subassembly can be mixed with the coolant outflow from adjacent subassemblies prior to the temperature sensing to increase the sensitivity of the protection system to a single subassembly failure. Coherence between the sensors can be required to discriminate against noise signals. (Official Gazette)
Authors:
Publication Date:
OSTI Identifier:
4389909
Report Number(s):
US 3764467
Resource Type:
Patent
Resource Relation:
Patent File Date: 1971 Dec 22; Other Information: G21c7/00; G21c17/00. Orig. Receipt Date: 30-JUN-74
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
N77500* --Reactors--Power Reactors, Breeding; *FBR TYPE REACTORS; *LMFBR TYPE REACTORS-- REACTOR PROTECTION SYSTEMS; *REACTOR PROTECTION SYSTEMS-- TEMPERATURE MONITORING; CONFIGURATION; PRIMARY COOLANT CIRCUITS LMFBR TYPE REACTORS