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

Patent · Fri Jul 20 00:00:00 EDT 1984

OSTI ID:5801537

DeVolpi, A

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31-109-ENG-38
• Assignee: Dept. of Energy
• Application Number: ON: DE85011638
• OSTI ID: 5801537
• Country of Publication: United States
• Language: English

Related Subjects

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