Monitoring system for a liquid-cooled nuclear fission reactor. [PWR]

Title: Monitoring system for a liquid-cooled nuclear fission reactor. [PWR]

Full Record
Other Related Research

Abstract

The invention provides improved means for detecting the water levels in various regions of a water-cooled nuclear power reactor, viz., in the downcomer, in the core, in the inlet and outlet plenums, at the head, and elsewhere; and also for detecting the density of the water in these regions. The invention utilizes a plurality of exterior gamma radiation detectors and a collimator technique operable to sense separate regions of the reactor vessel to give respectively, unique signals for these regions, whereby comparative analysis of these signals can be used to advise of the presence and density of cooling water in the vessel.

Inventors:: DeVolpi, A.

Issue Date:: 1984-07-20

Research Org.:: Argonne National Lab., IL (USA)

OSTI Identifier:: 5801537

Application Number:: ON: DE85011638

Assignee:: Dept. of Energy EDB-85-094010

DOE Contract Number:: W-31-109-ENG-38

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; LEVEL INDICATORS; RADIATION DETECTORS; PRIMARY COOLANT CIRCUITS; PWR TYPE REACTORS; GAMMA RADIATION; REACTOR INTERNALS; COOLING SYSTEMS; ELECTROMAGNETIC RADIATION; ENERGY SYSTEMS; IONIZING RADIATIONS; MEASURING INSTRUMENTS; RADIATIONS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210200* - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled; 440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments

Citation Formats


                    DeVolpi, A. Monitoring system for a liquid-cooled nuclear fission reactor. [PWR].  United States: N. p., 1984. 
        Web.

Copy to clipboard


                    DeVolpi, A. Monitoring system for a liquid-cooled nuclear fission reactor. [PWR].  United States.

Copy to clipboard


                    DeVolpi, A. Fri .  
        "Monitoring system for a liquid-cooled nuclear fission reactor. [PWR]".  United States.

Copy to clipboard


                    
@article{osti_5801537,

  title        = {Monitoring system for a liquid-cooled nuclear fission reactor. [PWR]},

  author       = {DeVolpi, A.},

  abstractNote = {The invention provides improved means for detecting the water levels in various regions of a water-cooled nuclear power reactor, viz., in the downcomer, in the core, in the inlet and outlet plenums, at the head, and elsewhere; and also for detecting the density of the water in these regions. The invention utilizes a plurality of exterior gamma radiation detectors and a collimator technique operable to sense separate regions of the reactor vessel to give respectively, unique signals for these regions, whereby comparative analysis of these signals can be used to advise of the presence and density of cooling water in the vessel.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1984},

  month        = {7}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Monitoring system for a liquid-cooled nuclear fission reactor

Patent De Volpi, A.

This patent describes a fission reactor having a pressure vessel, a core in the pressure vessel, means for generating fission reaction heat in the core, and means including a coolant circulating under pressure through the reactor vessel and core for transmitting the heat to outside of the reactor for external conversion to useful work. An improved monitoring means is described for determining the level of the coolant at various regions in the reactor vessel, comprising the combination of gamma radiation detectors; means for positioning the radiation detectors adjacent the reactor vessel on the exterior side thereof. The radiation detectors aremore »« less
Monitoring system for a liquid-cooled nuclear fission reactor

Patent DeVolpi, Alexander (Bolingbrook, IL)

A monitoring system for detecting changes in the liquid levels in various regions of a water-cooled nuclear power reactor, viz., in the downcomer, in the core, in the inlet and outlet plenums, at the head, and elsewhere; and also for detecting changes in the density of the liquid in these regions. A plurality of gamma radiation detectors are used, arranged vertically along the outside of the reactor vessel, and collimator means for each detector limits the gamma-radiation it receives as emitting from only isolated regions of the vessel. Excess neutrons produced by the fission reaction will be captured by themore »« less
Full Text Available
System for the heat insulation of horizontal closure surfaces for a liquid metal cooled nuclear reactor

Patent Jullien, R.; Perona, M.; Venot, R.

The system comprises an assembly of uniformly spaced horizontal plates extending parallel to a horizontal closure surface, an outer shell and a thick bottom plate suspended from the horizontal surface by means of spaced suspension members attached to the horizontal surface and to the thick plate respectively. The thick plate supports stacked metallic plates held in spaced relation and protected by a lateral shell which is capable of free expansion at the upper extremity and joined to the thick plate in leak-tight manner. 4 claims, 4 figures.
System for bearing a nuclear reactor vessel cooled by liquid metal. [LMFBR]

Patent Mahe, A.; Jullien, G.

The invention relates to a bearing system for supporting a nuclear reactor vessel of the kind which is suspended from the reactor closure slab. The bearing system comprises a ring connected at one end to a collar and at the other end to two collars. The collar connected to the bottom end of the ring forms the top part of the vessel to be supported while the other two collars fit into the slab at two separate places. The ring and collars are disposed in an annular space formed in the slab and dividing it into two parts, i.e., amore »« less
Fission chamber detector system for monitoring neutron flux in a nuclear reactor over an extra wide range, with high sensitivity in a hostile environment

Patent Lingren, C. L.; Miller, J. F.

A fission chamber detector system for monitoring neutron flux density in a nuclear reactor utilizes a unique coaxial cable carried through a flexible metal hose to provide sufficient signal quality to allow a preamplifier and signal conditioning unit for amplifying and conditioning neutron signal pulses produced by the fission chambers to be far enough away from the fission chambers as to be located outside of the containment vessel for the reactor. Reactor power and rate-of-reactor-power-change signals produced for overlapping power ranges from a countrate circuit and a mean square voltage circuit are aligned by a voltage controlled switch and amore »« less

Similar Records