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Title: Fast breeder reactor protection system

Abstract

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)

Inventors:
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4389909
Patent Number(s):
US 3764467
Assignee:
to United States Atomic Energy Commission TIC; NSA-29-011900
NSA Number:
NSA-29-011900
Resource Type:
Patent
Resource Relation:
Patent File Date: 1971 Dec 22; Other Information: G21c7/00; G21c17/00. Orig. Receipt Date: 30-JUN-74
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

Citation Formats

van Erp, J.B. Fast breeder reactor protection system. United States: N. p., 1973. Web.
van Erp, J.B. Fast breeder reactor protection system. United States.
van Erp, J.B. Mon . "Fast breeder reactor protection system". United States. doi:.
@article{osti_4389909,
title = {Fast breeder reactor protection system},
author = {van Erp, J.B.},
abstractNote = {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)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 1973},
month = {Mon Oct 01 00:00:00 EDT 1973}
}
  • A pipe support consisting of a rigid link pivotally attached to a pipe and an anchor, adapted to generate stress or strain in the link and pipe due to pipe thermal movement, which stress or strain can oppose further pipe movement and generally provides pipe support. The pipe support can be used in multiple combinations with other pipe supports to form a support system. This support system is most useful in applications in which the pipe is normally operated at a constant elevated or depressed temperature such that desired stress or strain can be planned in advance of pipe andmore » support installation. The support system is therefore especially useful in steam stations and in refrigeration equipment.« less
  • A pipe support consisting of a rigid link pivotally attached to a pipe and an anchor, adapted to generate stress or strain in the link and pipe due to pipe thermal movement, which stress or strain can oppose further pipe movement and generally provides pipe support. The pipe support can be used in multiple combinations with other pipe supports to form a support system. This support system is most useful in applications in which the pipe is normally operated at a constant elevated or depressed temperature such that desired stress or strain can be planned in advance of pipe andmore » support installation. The support system is therefore especially useful in steam stations and in refrigeration equipment.« less