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Title: Thermionic switched self-actuating reactor shutdown system

Abstract

A self-actuating reactor shutdown system is described which has a thermionic switched electromagnetic latch arrangement which is responsive to reactor neutron flux changes and to reactor coolant temperature changes. The system is self-actuating in that the sensing thermionic device acts directly to release (scram) the control rod (absorber) without reference or signal from the main reactor plant protective and control systems. To be responsive to both temperature and neutron flux effects, two detectors are used, one responsive to reactor coolant temperatures, and the other responsive to reactor neutron flux increase. The detectors are incorporated into a thermionic diode connected electrically with an electromagnetic mechanism which under normal reactor operating conditions holds the control rod in its ready position (exterior of the reactor core).

Inventors:
; ;
Publication Date:
OSTI Identifier:
5339882
Application Number:
ON: DE82011753
Assignee:
Dept. of Energy
DOE Contract Number:  
AT03-76SF71032
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; IN CORE INSTRUMENTS; REACTOR PROTECTION SYSTEMS; SCRAM RODS; ENGINEERED SAFETY SYSTEMS; REACTOR SHUTDOWN; CONTROL ELEMENTS; REACTOR COMPONENTS; REACTOR INSTRUMENTATION; SHUTDOWNS; 220200* - Nuclear Reactor Technology- Components & Accessories

Citation Formats

Barrus, D. M., Shires, C. D., and Brummond, W. A. Thermionic switched self-actuating reactor shutdown system. United States: N. p., 1981. Web.
Barrus, D. M., Shires, C. D., & Brummond, W. A. Thermionic switched self-actuating reactor shutdown system. United States.
Barrus, D. M., Shires, C. D., and Brummond, W. A. Thu . "Thermionic switched self-actuating reactor shutdown system". United States. https://www.osti.gov/servlets/purl/5339882.
@article{osti_5339882,
title = {Thermionic switched self-actuating reactor shutdown system},
author = {Barrus, D. M. and Shires, C. D. and Brummond, W. A.},
abstractNote = {A self-actuating reactor shutdown system is described which has a thermionic switched electromagnetic latch arrangement which is responsive to reactor neutron flux changes and to reactor coolant temperature changes. The system is self-actuating in that the sensing thermionic device acts directly to release (scram) the control rod (absorber) without reference or signal from the main reactor plant protective and control systems. To be responsive to both temperature and neutron flux effects, two detectors are used, one responsive to reactor coolant temperatures, and the other responsive to reactor neutron flux increase. The detectors are incorporated into a thermionic diode connected electrically with an electromagnetic mechanism which under normal reactor operating conditions holds the control rod in its ready position (exterior of the reactor core).},
doi = {},
url = {https://www.osti.gov/biblio/5339882}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {6}
}