Portable instrument for inspecting irradiated nuclear-fuel assemblies in a water-filled storage pond by measurement of induced Cerenkov radiation

Patent · Thu May 13 00:00:00 EDT 1982

OSTI ID:6382270

Nicholson, N; Dowdy, E J; Holt, D M; Stump, Jr, C J

A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.

• DOE Contract Number: W-7405-ENG-36
• Assignee: EDB-83-078204
• Application Number: ON: DE83010480
• OSTI ID: 6382270
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHERENKOV COUNTERS
PHOTOMULTIPLIERS
FUEL POOLS
SPENT FUEL ELEMENTS
CHERENKOV RADIATION
SPENT FUEL STORAGE
ELECTROMAGNETIC RADIATION
FUEL ELEMENTS
MEASURING INSTRUMENTS
PHOTOTUBES
RADIATION DETECTORS
RADIATIONS
REACTOR COMPONENTS
STORAGE
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments