Thermionic switched self-actuating reactor shutdown system

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Description

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 ... continued below

Physical Description

Pages: 20

Creation Information

Barrus, D.M.; Shires, C.D. & Brummond, W.A. June 4, 1981.

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Description

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).

Physical Description

Pages: 20

Notes

NTIS, PC A02/MF A01.

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  • Other: DE82011753
  • Grant Number: AT03-76SF71032
  • Office of Scientific & Technical Information Report Number: 5339882
  • Archival Resource Key: ark:/67531/metadc1063985

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 4, 1981

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • June 6, 2019, 2:41 p.m.

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Barrus, D.M.; Shires, C.D. & Brummond, W.A. Thermionic switched self-actuating reactor shutdown system, patent, June 4, 1981; [Washington D.C.]. (https://digital.library.unt.edu/ark:/67531/metadc1063985/: accessed July 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.