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Estimated dose to a flood clean-up worker

J I Cehn1

  • 1Applied Sciences Co., Oakland, CA 94610, USA.

Health Physics
|January 1, 1996
PubMed
Summary

A flood clean-up worker experienced accidental gamma ray exposure from radium needles in 1994-1995. Radiation exposure was estimated between 1.25-1.75 mSv.

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Area of Science:

  • Radiological Sciences
  • Occupational Health

Background:

  • Accidental exposure to radioactive materials can occur during clean-up operations.
  • Radium-226 (226Ra) and its progeny are significant sources of gamma radiation.

Purpose of the Study:

  • To reconstruct and estimate the external radiation exposure of a worker inadvertently exposed to radium.
  • To assess the dose received from accidental contact with radium needles.

Main Methods:

  • Reconstruction of external exposure based on work proximity and duration.
  • Estimation of radium activity by measuring exposure rate at a standard distance (1 meter).

Main Results:

  • The worker was exposed to gamma rays from 10 radium needles, each with an estimated activity of 30 mCi.
  • The reconstructed external radiation dose was estimated to be between 1.25 and 1.75 millisieverts (mSv).

Conclusions:

  • Inadvertent exposure to significant radioactive sources can occur in occupational settings.
  • Dose reconstruction is crucial for assessing health risks following accidental radiological exposures.

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