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Rapid monitoring of gaseous fission products released from nuclear power stations

  • C. Chung
  • C. Y. Chen
  • C. S. Lin
  • W. W. Yeh
  • C. J. Lee
Field Portable Instrumentation

Abstract

Rapid, in situ measurements were used for quantitative monitoring of gaseous fission products around the nuclear power stations in Taiwan. A portable high-resolution germanium detector with portable multichannel analyzer was used in the field monitoring work. The detecting unit was calibrated using activated Ar, Kr, and Xe isotopes dispersed in a large chamber to obtain absolute efficiency curve in terms of γ-counts per m3 versus gamma-ray energy. The calibrated detecting unit was brought to the nuclear power plants for in situ monitoring for both normal operation and nuclear accidental exercise. In a typical four-hour measurement, the detection limits for most Kr and Xe fission product isotopes were 0.0028%≈0.98% of the derived air concentration (DAC) imposed by the local authority. The dose rate caused by gaseous radioisotopes released from nuclear power stations and dispersed to the surroundings can be quantitatively monitored in a short period using this portable unit.

Keywords

Germanium Nuclear Power Plant Fission Product Nuclear Power Station Germanium Detector 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1998

Authors and Affiliations

  • C. Chung
    • 1
  • C. Y. Chen
    • 1
  • C. S. Lin
    • 1
  • W. W. Yeh
    • 2
  • C. J. Lee
    • 2
  1. 1.Department of Nuclear ScienceNational Tsing Hua UniversityHsinchuTaiwan, R.O.C.
  2. 2.Radiation LaboratoryTaiwan Power CompanyShiman, Taipei CountyTaiwan, R.O.C.

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