JPS5746177A - High sensitivity drainage monitor - Google Patents

High sensitivity drainage monitor

Info

Publication number
JPS5746177A
JPS5746177A JP55122388A JP12238880A JPS5746177A JP S5746177 A JPS5746177 A JP S5746177A JP 55122388 A JP55122388 A JP 55122388A JP 12238880 A JP12238880 A JP 12238880A JP S5746177 A JPS5746177 A JP S5746177A
Authority
JP
Japan
Prior art keywords
sensors
radiation
drainage
scintillators
radioactivity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55122388A
Other languages
Japanese (ja)
Inventor
Hiroshi Kitaguchi
Masaaki Fujii
Masashi Kudo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55122388A priority Critical patent/JPS5746177A/en
Publication of JPS5746177A publication Critical patent/JPS5746177A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To increase radiation sensing sensitivity in the case radioactivity of drainage from a nuclear power station and the like is monitored, by arranging a plurality of a radiation sensors in a plurality of stages around a drain pipe of a radiation measuring part. CONSTITUTION:The radioactive drainage flows through a baffle body 2 and a discharge nozzle 3 from the direction of an arrow 1. The water does not contact with the inner wall of a pipe 4 at the radiation measuring part when it flows. The radioactivity of the drainage 11 is measured by the radiation sensors 31 enclosed by a shielding body 30.The sensors 31 are arranged in a location so that collimators 32 do not face the discharge nozzle 3 where radioactive contamination is expected to exist. Scintillators 35 are arranged in a circular shape on the coaxial circumference of the drainage 11 in the sensors 1. Light screening films 37 are provided for the scintillators 35 in consideration of energy resolution. Photoelectric multiplier tubes 36 are connected to the scintillators 35. In this constitution, the radiation irradiated in the radial direction can be effectively sensed. Furthermore, if the sensors having the same configuration are arranged at the down stream, the sensitivity is further increased.
JP55122388A 1980-09-05 1980-09-05 High sensitivity drainage monitor Pending JPS5746177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55122388A JPS5746177A (en) 1980-09-05 1980-09-05 High sensitivity drainage monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55122388A JPS5746177A (en) 1980-09-05 1980-09-05 High sensitivity drainage monitor

Publications (1)

Publication Number Publication Date
JPS5746177A true JPS5746177A (en) 1982-03-16

Family

ID=14834557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55122388A Pending JPS5746177A (en) 1980-09-05 1980-09-05 High sensitivity drainage monitor

Country Status (1)

Country Link
JP (1) JPS5746177A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007178336A (en) * 2005-12-28 2007-07-12 Mitsubishi Electric Corp Water monitor
CN113140342A (en) * 2021-03-03 2021-07-20 中广核工程有限公司 Method for discharging and conveying radioactive liquid effluent of nuclear power plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007178336A (en) * 2005-12-28 2007-07-12 Mitsubishi Electric Corp Water monitor
JP4659612B2 (en) * 2005-12-28 2011-03-30 三菱電機株式会社 Water monitor
CN113140342A (en) * 2021-03-03 2021-07-20 中广核工程有限公司 Method for discharging and conveying radioactive liquid effluent of nuclear power plant

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